TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Pavlović, Vladimir
AU  - Mirković, Miljana
AU  - Vrbica, Boško
AU  - Novaković, Irena
AU  - Stanković, Dalibor
AU  - Kremenović, Aleksandar
AU  - Uskoković, Vuk
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7552
AB  - Metals and metal oxides have subpar antibacterial activities compared to those of small-molecule antibiotics, yet there are hopes that with proper compositional and structural adjustments this gap might be bridged. In this study, titanium dioxide (TiO2) nanoparticles were mechanically activated and combined with particulate silver through simple reduction process elicited by UV irradiation and assisted with the ultrasound. The resulting powders in various combinations (Ag vs. no Ag, activated vs. non-activated) were characterized using a range of experimental techniques and assessed for their antibacterial activities. The preparation procedure presented in this work prevails over the disadvantages of many chemical routes, most critically by avoiding the use of toxic substances. The mechanical activation did not reduce the particle size or crystallinity of TiO2 nor did it consistently alter the bandgap, yet it enabled the doubling of the amount of silver incorporable into the material. Further, while both mechanical activation and the addition of silver in the amount not exceeding 0.5 wt% produced barely detectable structural changes in the material, they both augmented its antibacterial activity. The precursor TiO2 powder produced no inhibition zone against any of the four bacterial species tested, while the mechanical activation of TiO2 led to the formation of distinct inhibition zones against each of the four bacterial species tested. The addition of silver to activated TiO2 further widened the inhibition zones and it also imparted the antibacterial activity to non-activated TiO2. The boost in the antibacterial activity achieved by the short mechanical activation was of a similar magnitude as the boost obtained after the addition of silver. The antibacterial activity was not different for different species when no silver was added to the system. However, with the addition of silver, species selectivity was obtained, as the composites were more effective against the two Gram-negative species (Escherichia coli and Klebsiella pneumoniae) than against the two Gram-positive ones (Staphylococcus aureus and Bacillus subtilis). The antibacterial activity increased with the addition of silver in the broth assay, but it was mediocre compared to that detected in the agar assay, attesting to the poor dispersability of the powders and their best performance when the bacterial cells migrate to the composite surface than vice versa. The findings of this study give hope that with appropriate microstructural or compositional alterations, the antibacterial activity of metal oxide powders and inorganic materials in general can be made comparable to that of small-molecule antibiotics.
PB  - Elsevier
T2  - Colloids and Surfaces A: Physicochemical and Engineering Aspects
T1  - Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles
VL  - 691
SP  - 133890
DO  - 10.1016/j.colsurfa.2024.133890
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Pavlović, Vladimir and Mirković, Miljana and Vrbica, Boško and Novaković, Irena and Stanković, Dalibor and Kremenović, Aleksandar and Uskoković, Vuk",
year = "2024",
abstract = "Metals and metal oxides have subpar antibacterial activities compared to those of small-molecule antibiotics, yet there are hopes that with proper compositional and structural adjustments this gap might be bridged. In this study, titanium dioxide (TiO2) nanoparticles were mechanically activated and combined with particulate silver through simple reduction process elicited by UV irradiation and assisted with the ultrasound. The resulting powders in various combinations (Ag vs. no Ag, activated vs. non-activated) were characterized using a range of experimental techniques and assessed for their antibacterial activities. The preparation procedure presented in this work prevails over the disadvantages of many chemical routes, most critically by avoiding the use of toxic substances. The mechanical activation did not reduce the particle size or crystallinity of TiO2 nor did it consistently alter the bandgap, yet it enabled the doubling of the amount of silver incorporable into the material. Further, while both mechanical activation and the addition of silver in the amount not exceeding 0.5 wt% produced barely detectable structural changes in the material, they both augmented its antibacterial activity. The precursor TiO2 powder produced no inhibition zone against any of the four bacterial species tested, while the mechanical activation of TiO2 led to the formation of distinct inhibition zones against each of the four bacterial species tested. The addition of silver to activated TiO2 further widened the inhibition zones and it also imparted the antibacterial activity to non-activated TiO2. The boost in the antibacterial activity achieved by the short mechanical activation was of a similar magnitude as the boost obtained after the addition of silver. The antibacterial activity was not different for different species when no silver was added to the system. However, with the addition of silver, species selectivity was obtained, as the composites were more effective against the two Gram-negative species (Escherichia coli and Klebsiella pneumoniae) than against the two Gram-positive ones (Staphylococcus aureus and Bacillus subtilis). The antibacterial activity increased with the addition of silver in the broth assay, but it was mediocre compared to that detected in the agar assay, attesting to the poor dispersability of the powders and their best performance when the bacterial cells migrate to the composite surface than vice versa. The findings of this study give hope that with appropriate microstructural or compositional alterations, the antibacterial activity of metal oxide powders and inorganic materials in general can be made comparable to that of small-molecule antibiotics.",
publisher = "Elsevier",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
title = "Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles",
volume = "691",
pages = "133890",
doi = "10.1016/j.colsurfa.2024.133890"
}

Anđelković, L., Šuljagić, M., Pavlović, V., Mirković, M., Vrbica, B., Novaković, I., Stanković, D., Kremenović, A.,& Uskoković, V.. (2024). Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles. in Colloids and Surfaces A: Physicochemical and Engineering Aspects
Elsevier., 691, 133890.
https://doi.org/10.1016/j.colsurfa.2024.133890

Anđelković L, Šuljagić M, Pavlović V, Mirković M, Vrbica B, Novaković I, Stanković D, Kremenović A, Uskoković V. Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles. in Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2024;691:133890.
doi:10.1016/j.colsurfa.2024.133890 .

Anđelković, Ljubica, Šuljagić, Marija, Pavlović, Vladimir, Mirković, Miljana, Vrbica, Boško, Novaković, Irena, Stanković, Dalibor, Kremenović, Aleksandar, Uskoković, Vuk, "Mechanical activation and silver supplementation as determinants of the antibacterial activity of titanium dioxide nanoparticles" in Colloids and Surfaces A: Physicochemical and Engineering Aspects, 691 (2024):133890,
https://doi.org/10.1016/j.colsurfa.2024.133890 . .

TY  - JOUR
AU  - Mirković, Miljana
AU  - Maletaškić, Jelena
AU  - Butulija, Svetlana
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7551
AB  - This paper shows a simple way to synthesize a series of Ce1-xSrxPO4 ceramic materials using acetate solutions of Ce and Sr instead of nitrate which were used so far. For synthesis, the preparation method was used by simple mixing of acetate solutions of Ceand Sr(, with NaH2PO4 at room temperature, and the studied compositions were Ce1-xSrxPO4 (where x = 0, 0.1, 0.2, 0.3, 0.4, 0.5). The disintegration of Sr in monazite structures in different sintering temperature ranges from 600°C to 1000°C was investigated. The X-ray diffraction was used to track the evolution of the phase composition with thermal treatment. The morphology of sintered ceramics was obtained by scanning electron microscopy and vibrational bands of selected spectra were observed using the FT-IR method. Relative geometric density of selected samples was evaluated. The most favorable conditions for obtaining high-temperature Ce, Sr phosphate-based ceramic material are reported.
AB  - У овом раду је приказан једноставан начин да се синтетише серија Ce1-xSrxPO4 керамичких материјала коришћењем ацетатних раствора Ce и Sr уместо до сада коришћених нитрата. За синтезу је коришћен метод припреме једноставним мешањем раствора Ce(C2H3O2)3·xH2O), Sr(C2H3O2)2, и NaH2PO4 као прекурсора на собној температури, а испитивани састави су Ce1-xSrxPO4 (где је к = 0 , 0,1, 0,2, 0,3, 0,4, 0,5). Испитивана је дезинтеграција Sr у структурама моназита у различитим температурним распонима синтеровања од 600 °C до 1000 °C. Дифракција рендгенских зрака на праху (XRD) је коришћена за праћење еволуције фазног састава синтетисаних и синтерованих узорака. Морфологија синтероване керамике испитивана је скенирајућом електронском микроскопијом (СЕМ), а вибрациое траке одабраних спектра су испитане ФТИР методом. Згушњавање и еволуција микроструктуре су одређене коришћењем релативне геометријске густине одабраних узорака. Приказани су најповољнији услови за добијање високотемпературног керамичког материјала на бази Ce, Sr фосфата.
PB  - Association for ETRAN Society
T2  - Science of Sintering
T1  - The influence of strontium content and sintering temperature on monazite stability
VL  - 56
SP  - 115
EP  - 121
DO  - 10.2298/SOS220811024M
ER  - 

@article{
author = "Mirković, Miljana and Maletaškić, Jelena and Butulija, Svetlana and Anđelković, Ljubica and Šuljagić, Marija",
year = "2024",
abstract = "This paper shows a simple way to synthesize a series of Ce1-xSrxPO4 ceramic materials using acetate solutions of Ce and Sr instead of nitrate which were used so far. For synthesis, the preparation method was used by simple mixing of acetate solutions of Ceand Sr(, with NaH2PO4 at room temperature, and the studied compositions were Ce1-xSrxPO4 (where x = 0, 0.1, 0.2, 0.3, 0.4, 0.5). The disintegration of Sr in monazite structures in different sintering temperature ranges from 600°C to 1000°C was investigated. The X-ray diffraction was used to track the evolution of the phase composition with thermal treatment. The morphology of sintered ceramics was obtained by scanning electron microscopy and vibrational bands of selected spectra were observed using the FT-IR method. Relative geometric density of selected samples was evaluated. The most favorable conditions for obtaining high-temperature Ce, Sr phosphate-based ceramic material are reported., У овом раду је приказан једноставан начин да се синтетише серија Ce1-xSrxPO4 керамичких материјала коришћењем ацетатних раствора Ce и Sr уместо до сада коришћених нитрата. За синтезу је коришћен метод припреме једноставним мешањем раствора Ce(C2H3O2)3·xH2O), Sr(C2H3O2)2, и NaH2PO4 као прекурсора на собној температури, а испитивани састави су Ce1-xSrxPO4 (где је к = 0 , 0,1, 0,2, 0,3, 0,4, 0,5). Испитивана је дезинтеграција Sr у структурама моназита у различитим температурним распонима синтеровања од 600 °C до 1000 °C. Дифракција рендгенских зрака на праху (XRD) је коришћена за праћење еволуције фазног састава синтетисаних и синтерованих узорака. Морфологија синтероване керамике испитивана је скенирајућом електронском микроскопијом (СЕМ), а вибрациое траке одабраних спектра су испитане ФТИР методом. Згушњавање и еволуција микроструктуре су одређене коришћењем релативне геометријске густине одабраних узорака. Приказани су најповољнији услови за добијање високотемпературног керамичког материјала на бази Ce, Sr фосфата.",
publisher = "Association for ETRAN Society",
journal = "Science of Sintering",
title = "The influence of strontium content and sintering temperature on monazite stability",
volume = "56",
pages = "115-121",
doi = "10.2298/SOS220811024M"
}

Mirković, M., Maletaškić, J., Butulija, S., Anđelković, L.,& Šuljagić, M.. (2024). The influence of strontium content and sintering temperature on monazite stability. in Science of Sintering
Association for ETRAN Society., 56, 115-121.
https://doi.org/10.2298/SOS220811024M

Mirković M, Maletaškić J, Butulija S, Anđelković L, Šuljagić M. The influence of strontium content and sintering temperature on monazite stability. in Science of Sintering. 2024;56:115-121.
doi:10.2298/SOS220811024M .

Mirković, Miljana, Maletaškić, Jelena, Butulija, Svetlana, Anđelković, Ljubica, Šuljagić, Marija, "The influence of strontium content and sintering temperature on monazite stability" in Science of Sintering, 56 (2024):115-121,
https://doi.org/10.2298/SOS220811024M . .

TY  - JOUR
AU  - Vuksanović, Marija
AU  - Mladenović, Ivana
AU  - Radovanović, Željko
AU  - Živković, Predrag
AU  - Savić, Andrija
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7519
AB  - Polimerne smole na bazi akrilata dobijene iz Bis-GMA (Bisfenol A glicidmetakrilat), koji je pogodan za
fotopolimerizaciju, koriste se u stomatologiji za različite namene zbog lakoće nanošenja i mogućnosti
da se utiče na njihova svojstva dodavanjem ojačanja različitog oblika i hemijskog sastava. Sintetisano
je ojačanje u formi čestica na bazi dvostrukih slojevitih hidroksida magnezijuma i aluminijuma (MgAlLDH- Layered Double Hidroxides) nataloženih na silicijum dioksidu dobijenom iz ljuski pirinča. Kao
podloge korišćene su metalna legura na bazi hroma i molibdena za primenu u stomatologiji i staklo u
formi podloga za mikroskopske preparate. Adhezivna svojstva kompozita su bitna sa aspekta njihove
primene. Adhezivna svojstva materijala su određena na osnovu merenja mikrotvrdoće kompozita i to
primenom različitih opterećenja kako bi se procenio parametar adhezije koji pokazuje uticaj prevlake
na podlogu. Upoređeno je kako se vezuje čista matrica od fotopolimerizujućeg akrilata sa podlogom od
stomatološke legure sa vezivanjem za staklenu podlogu. Potom je upoređeno kako se vezuju kompozitni
materijali na obe podloge. Adhezija je određena i na osnovu promene ugla kvašenja između kompozita
i rezultati su upoređeni sa rezultatima mikroindentacije. Pokazalo se da dodatak kompozitnih čestica
kao ojačanja u matricu od akrilata povećava adhezivna svojstva kompozita u odnosu na čistu matricu i
da se ost
AB  - Polymer resins based on acrylates obtained from Bis-GMA (Bisphenol A glycide methacrylate), which is suitable for photopolymerization, are used in dentistry for various purposes due to the ease of application and the possibility to influence their properties by adding reinforcements of different shapes, crystal structure and chemical compositions. Reinforcement in the form of particles based on MgAlLDH (layered double hydroxide) deposited on silica obtained from rice husks on two substrates. A metal base and glass were used. The adhesive properties are important in order to see the possibility of using these materials in applications. In order to measure the adhesive properties of the material, the composite microhardness measurement method is used by applying different loads in order to evaluate the adhesion parameter that shows the effect of the coating on the substrate. It was compared to how a pure photopolymerizing acrylate matrix bonds with a chromium-based dental alloy substrate that is used in the production of different parts of dentures by bonding to a glass substrate. Then, it was compared how composite materials are bonded to both substrates. Adhesion was monitored through the change in wetting angle between the composites, and the results were compared with the results of microindentation. It was shown that the addition of composite particles increases the adhesive properties of the composite compared to the pure matrix and that better adhesion is achieved between the composite and the metal substrate than between the composite and the glass substrate.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAl- LDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu
T1  - Adhesion testing of photopolymerizing acrylates reinforced with MgAlLDH@SiO2 particles on dental chromium alloy and on glass
VL  - 79
IS  - 1
SP  - 9
EP  - 13
DO  - 10.5937/tehnika2401009V
ER  - 

@article{
author = "Vuksanović, Marija and Mladenović, Ivana and Radovanović, Željko and Živković, Predrag and Savić, Andrija and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "Polimerne smole na bazi akrilata dobijene iz Bis-GMA (Bisfenol A glicidmetakrilat), koji je pogodan za
fotopolimerizaciju, koriste se u stomatologiji za različite namene zbog lakoće nanošenja i mogućnosti
da se utiče na njihova svojstva dodavanjem ojačanja različitog oblika i hemijskog sastava. Sintetisano
je ojačanje u formi čestica na bazi dvostrukih slojevitih hidroksida magnezijuma i aluminijuma (MgAlLDH- Layered Double Hidroxides) nataloženih na silicijum dioksidu dobijenom iz ljuski pirinča. Kao
podloge korišćene su metalna legura na bazi hroma i molibdena za primenu u stomatologiji i staklo u
formi podloga za mikroskopske preparate. Adhezivna svojstva kompozita su bitna sa aspekta njihove
primene. Adhezivna svojstva materijala su određena na osnovu merenja mikrotvrdoće kompozita i to
primenom različitih opterećenja kako bi se procenio parametar adhezije koji pokazuje uticaj prevlake
na podlogu. Upoređeno je kako se vezuje čista matrica od fotopolimerizujućeg akrilata sa podlogom od
stomatološke legure sa vezivanjem za staklenu podlogu. Potom je upoređeno kako se vezuju kompozitni
materijali na obe podloge. Adhezija je određena i na osnovu promene ugla kvašenja između kompozita
i rezultati su upoređeni sa rezultatima mikroindentacije. Pokazalo se da dodatak kompozitnih čestica
kao ojačanja u matricu od akrilata povećava adhezivna svojstva kompozita u odnosu na čistu matricu i
da se ost, Polymer resins based on acrylates obtained from Bis-GMA (Bisphenol A glycide methacrylate), which is suitable for photopolymerization, are used in dentistry for various purposes due to the ease of application and the possibility to influence their properties by adding reinforcements of different shapes, crystal structure and chemical compositions. Reinforcement in the form of particles based on MgAlLDH (layered double hydroxide) deposited on silica obtained from rice husks on two substrates. A metal base and glass were used. The adhesive properties are important in order to see the possibility of using these materials in applications. In order to measure the adhesive properties of the material, the composite microhardness measurement method is used by applying different loads in order to evaluate the adhesion parameter that shows the effect of the coating on the substrate. It was compared to how a pure photopolymerizing acrylate matrix bonds with a chromium-based dental alloy substrate that is used in the production of different parts of dentures by bonding to a glass substrate. Then, it was compared how composite materials are bonded to both substrates. Adhesion was monitored through the change in wetting angle between the composites, and the results were compared with the results of microindentation. It was shown that the addition of composite particles increases the adhesive properties of the composite compared to the pure matrix and that better adhesion is achieved between the composite and the metal substrate than between the composite and the glass substrate.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAl- LDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu, Adhesion testing of photopolymerizing acrylates reinforced with MgAlLDH@SiO2 particles on dental chromium alloy and on glass",
volume = "79",
number = "1",
pages = "9-13",
doi = "10.5937/tehnika2401009V"
}

Vuksanović, M., Mladenović, I., Radovanović, Ž., Živković, P., Savić, A., Marinković, A.,& Jančić-Heinemann, R.. (2024). Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAl- LDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu. in Tehnika
Beograd : Savez inženjera i tehničara Srbije., 79(1), 9-13.
https://doi.org/10.5937/tehnika2401009V

Vuksanović M, Mladenović I, Radovanović Ž, Živković P, Savić A, Marinković A, Jančić-Heinemann R. Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAl- LDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu. in Tehnika. 2024;79(1):9-13.
doi:10.5937/tehnika2401009V .

Vuksanović, Marija, Mladenović, Ivana, Radovanović, Željko, Živković, Predrag, Savić, Andrija, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAl- LDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu" in Tehnika, 79, no. 1 (2024):9-13,
https://doi.org/10.5937/tehnika2401009V . .

TY  - JOUR
AU  - Alazreg, Asma
AU  - Vuksanović, Marija M.
AU  - Mladenović, Ivana O.
AU  - Egelja, Adela
AU  - Janković-Mandić, Ljiljana
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6694
AB  - The MgAl-LDH@SiO2 particles are prepared by the coprecipitation of LDH on silica originating from plants.
Particles are of submicron size and are well dispersed in the matrix. Composites consisting of PMMA reinforced
with MgAl-LDH@SiO2 particles have improved hardness and resistance to viscoelastic deformation, as tested by
microhardness measurements.
PB  - Elsevier
T2  - Materials Letters
T1  - Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles
VL  - 354
SP  - 135354
DO  - 10.1016/j.matlet.2023.135354
ER  - 

@article{
author = "Alazreg, Asma and Vuksanović, Marija M. and Mladenović, Ivana O. and Egelja, Adela and Janković-Mandić, Ljiljana and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "The MgAl-LDH@SiO2 particles are prepared by the coprecipitation of LDH on silica originating from plants.
Particles are of submicron size and are well dispersed in the matrix. Composites consisting of PMMA reinforced
with MgAl-LDH@SiO2 particles have improved hardness and resistance to viscoelastic deformation, as tested by
microhardness measurements.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles",
volume = "354",
pages = "135354",
doi = "10.1016/j.matlet.2023.135354"
}

Alazreg, A., Vuksanović, M. M., Mladenović, I. O., Egelja, A., Janković-Mandić, L., Marinković, A.,& Jančić-Heinemann, R.. (2024). Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles. in Materials Letters
Elsevier., 354, 135354.
https://doi.org/10.1016/j.matlet.2023.135354

Alazreg A, Vuksanović MM, Mladenović IO, Egelja A, Janković-Mandić L, Marinković A, Jančić-Heinemann R. Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles. in Materials Letters. 2024;354:135354.
doi:10.1016/j.matlet.2023.135354 .

Alazreg, Asma, Vuksanović, Marija M., Mladenović, Ivana O., Egelja, Adela, Janković-Mandić, Ljiljana, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles" in Materials Letters, 354 (2024):135354,
https://doi.org/10.1016/j.matlet.2023.135354 . .

TY  - JOUR
AU  - Vuksanović, Marija
AU  - Mladenović, Ivana
AU  - Stupar, Stevan
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7366
AB  - Polymer composites based on unsaturated polyester resin (UPR) and reinforced with particles based on unmodified/modified
plant provenance biosilica particles were synthesized and characterized. An unsaturated polyester resin was obtained from
waste poly (ethylene terephthalate (PET). Biosilaca particles are made from rice husk biomass. The surface of the produced
silica particles was modified using three different silanes: 3-trimethoxysilylpropyl methacrylate (MEMO), trimethoxyvinylsilane (TMEVS), and 3-aminopropyltrimethoxysilane (APTMS). The microhardness test method was used to investigate
the mechanical properties of synthesized composite material with variations in dwell times and applied loads. Optimization of
composite microhardness value prediction in function of synthesized parameters (type of modification of silica particles) and
measurement parameters (applied loads and dwell times) was done using the method of response surface methodology (RSM)
regression analysis. The maximal microhardness values (0.459 GPa) were obtained of type modification of silica particles with
vinyl with 80% confidence for 120 experimental variables. This method can be used to choose the optimal dwell time and load
for comparison of measurements between different composite materials and to enable the choice of the material in terms of
optimization of the quality of reinforcement and quality of interphase determined by surface modification.
PB  - SAGE
T2  - Polymers and Polymer Composites
T1  - Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology
VL  - 32
SP  - 1
EP  - 12
DO  - 10.1177/09673911241228
ER  - 

@article{
author = "Vuksanović, Marija and Mladenović, Ivana and Stupar, Stevan and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "Polymer composites based on unsaturated polyester resin (UPR) and reinforced with particles based on unmodified/modified
plant provenance biosilica particles were synthesized and characterized. An unsaturated polyester resin was obtained from
waste poly (ethylene terephthalate (PET). Biosilaca particles are made from rice husk biomass. The surface of the produced
silica particles was modified using three different silanes: 3-trimethoxysilylpropyl methacrylate (MEMO), trimethoxyvinylsilane (TMEVS), and 3-aminopropyltrimethoxysilane (APTMS). The microhardness test method was used to investigate
the mechanical properties of synthesized composite material with variations in dwell times and applied loads. Optimization of
composite microhardness value prediction in function of synthesized parameters (type of modification of silica particles) and
measurement parameters (applied loads and dwell times) was done using the method of response surface methodology (RSM)
regression analysis. The maximal microhardness values (0.459 GPa) were obtained of type modification of silica particles with
vinyl with 80% confidence for 120 experimental variables. This method can be used to choose the optimal dwell time and load
for comparison of measurements between different composite materials and to enable the choice of the material in terms of
optimization of the quality of reinforcement and quality of interphase determined by surface modification.",
publisher = "SAGE",
journal = "Polymers and Polymer Composites",
title = "Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology",
volume = "32",
pages = "1-12",
doi = "10.1177/09673911241228"
}

Vuksanović, M., Mladenović, I., Stupar, S., Marinković, A.,& Jančić-Heinemann, R.. (2024). Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology. in Polymers and Polymer Composites
SAGE., 32, 1-12.
https://doi.org/10.1177/09673911241228

Vuksanović M, Mladenović I, Stupar S, Marinković A, Jančić-Heinemann R. Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology. in Polymers and Polymer Composites. 2024;32:1-12.
doi:10.1177/09673911241228 .

Vuksanović, Marija, Mladenović, Ivana, Stupar, Stevan, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology" in Polymers and Polymer Composites, 32 (2024):1-12,
https://doi.org/10.1177/09673911241228 . .

TY  - JOUR
AU  - Popadić, Daliborka
AU  - Krstić, Jugoslav
AU  - Janošević-Ležaić, Aleksandra
AU  - Popović, Maja
AU  - Milojević-Rakić, Maja
AU  - Ignjatović, Ljubiša
AU  - Bajuk-Bogdanović, Danica
AU  - Gavrilov, Nemanja
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7399
AB  - Reuse and/or recycling of spent adsorbents is taking a central role in modern thinking and catalyzed carbonization is the way forward. Herein we explore the carbonization of adsorbed acetamiprid, in an inert atmosphere, as a way of recycling and producing nitrogen-rich carbon material for potential use in supercapacitors. Added value material and the reuse of the adsorbent were achieved by carbonization at 700 °C under argon. The formation of a nitrogen-doped carbon layer as an active material on the adsorbent, bonded through a C-Si linkage, has been conclusively verified through elemental composition quantification using XPS and EDX measurements. Two-stage catalytic decomposition and condensation of the adsorbed pesticide is followed by TGA and TPD-MS. Attained carbon-based materials give stable Faradaic capacitance with a slight dependency on the number of adsorbing cycles. Capacitance calculated with respect to the adlayer carbon material reaches values as high as 610 F g−1. Galvanostatic Charge/Discharge measurement confirmed the stability of explored materials with a slight increase in capacitance over 1000 cycles. The presented results envisage electroactive materials preparation from environmental pollutants, adding value to spent adsorbents.
PB  - Elsevier
T2  - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
T1  - Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage
VL  - 308
SP  - 123772
DO  - 10.1016/j.saa.2023.123772
ER  - 

@article{
author = "Popadić, Daliborka and Krstić, Jugoslav and Janošević-Ležaić, Aleksandra and Popović, Maja and Milojević-Rakić, Maja and Ignjatović, Ljubiša and Bajuk-Bogdanović, Danica and Gavrilov, Nemanja",
year = "2024",
abstract = "Reuse and/or recycling of spent adsorbents is taking a central role in modern thinking and catalyzed carbonization is the way forward. Herein we explore the carbonization of adsorbed acetamiprid, in an inert atmosphere, as a way of recycling and producing nitrogen-rich carbon material for potential use in supercapacitors. Added value material and the reuse of the adsorbent were achieved by carbonization at 700 °C under argon. The formation of a nitrogen-doped carbon layer as an active material on the adsorbent, bonded through a C-Si linkage, has been conclusively verified through elemental composition quantification using XPS and EDX measurements. Two-stage catalytic decomposition and condensation of the adsorbed pesticide is followed by TGA and TPD-MS. Attained carbon-based materials give stable Faradaic capacitance with a slight dependency on the number of adsorbing cycles. Capacitance calculated with respect to the adlayer carbon material reaches values as high as 610 F g−1. Galvanostatic Charge/Discharge measurement confirmed the stability of explored materials with a slight increase in capacitance over 1000 cycles. The presented results envisage electroactive materials preparation from environmental pollutants, adding value to spent adsorbents.",
publisher = "Elsevier",
journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",
title = "Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage",
volume = "308",
pages = "123772",
doi = "10.1016/j.saa.2023.123772"
}

Popadić, D., Krstić, J., Janošević-Ležaić, A., Popović, M., Milojević-Rakić, M., Ignjatović, L., Bajuk-Bogdanović, D.,& Gavrilov, N.. (2024). Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage. in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Elsevier., 308, 123772.
https://doi.org/10.1016/j.saa.2023.123772

Popadić D, Krstić J, Janošević-Ležaić A, Popović M, Milojević-Rakić M, Ignjatović L, Bajuk-Bogdanović D, Gavrilov N. Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage. in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2024;308:123772.
doi:10.1016/j.saa.2023.123772 .

Popadić, Daliborka, Krstić, Jugoslav, Janošević-Ležaić, Aleksandra, Popović, Maja, Milojević-Rakić, Maja, Ignjatović, Ljubiša, Bajuk-Bogdanović, Danica, Gavrilov, Nemanja, "Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage" in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 308 (2024):123772,
https://doi.org/10.1016/j.saa.2023.123772 . .

TY  - JOUR
AU  - Elhmali, Houda Taher
AU  - Stajčić, Ivana
AU  - Stajčić, Aleksandar
AU  - Pešić, Ivan
AU  - Jovanović, Marija
AU  - Petrović, Miloš
AU  - Radojević, Vesna
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7427
AB  - While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.
PB  - MDPI
T2  - Polymers
T1  - Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior
VL  - 16
IS  - 2
SP  - 278
DO  - 10.3390/polym16020278
ER  - 

@article{
author = "Elhmali, Houda Taher and Stajčić, Ivana and Stajčić, Aleksandar and Pešić, Ivan and Jovanović, Marija and Petrović, Miloš and Radojević, Vesna",
year = "2024",
abstract = "While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.",
publisher = "MDPI",
journal = "Polymers",
title = "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior",
volume = "16",
number = "2",
pages = "278",
doi = "10.3390/polym16020278"
}

Elhmali, H. T., Stajčić, I., Stajčić, A., Pešić, I., Jovanović, M., Petrović, M.,& Radojević, V.. (2024). Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers
MDPI., 16(2), 278.
https://doi.org/10.3390/polym16020278

Elhmali HT, Stajčić I, Stajčić A, Pešić I, Jovanović M, Petrović M, Radojević V. Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers. 2024;16(2):278.
doi:10.3390/polym16020278 .

Elhmali, Houda Taher, Stajčić, Ivana, Stajčić, Aleksandar, Pešić, Ivan, Jovanović, Marija, Petrović, Miloš, Radojević, Vesna, "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior" in Polymers, 16, no. 2 (2024):278,
https://doi.org/10.3390/polym16020278 . .

TY  - JOUR
AU  - Jovanović, Dunja
AU  - Filipović, Ana
AU  - Janjić, Goran
AU  - Lazarević-Pašti, Tamara
AU  - Džambaski, Zdravko
AU  - Bondžić, Bojan
AU  - Bondžić, Aleksandra
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7423
AB  - We have synthesized 22 C-1 functionalized-N-aryl-1,2,3,4-tetrahydroisoquinoline derivatives showing biological activities towards cholinergic enzymes. Synthesis was performed using visible-light-promoted photo-redox chemistry, starting from a common intermediate, and the application of this synthetic methodology drastically simplified synthetic routes and purification of desired compounds. All synthesized derivates were divided into four groups based on the substituents in the C-1 position, and their inhibition potencies towards two cholinergic enzymes, acetyl- and butyrylcholinesterase were evaluated. Most potent derivatives were selected, and kinetic analysis was further carried out to obtain insights into the mechanisms of inhibition of these two enzymes. Further validation of the mode of inhibition of cholinergic enzymes by the two most potent THIQ compounds, 3c and 3i, was performed using fluorescence-quenching titration studies. Molecular docking studies further confirmed the proposed mechanism of enzymes’ inhibition. In silico predictions of physicochemical properties, pharmacokinetics, drug-likeness, and medicinal chemistry friendliness of the selected most potent derivatives were performed using Swiss ADME tool. This was followed by UPLC-assisted log P determination and in vitro BBB permeability studies performed in order to assess the potential of the synthesized compounds to pass the BBB.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates
VL  - 25
IS  - 2
SP  - 1033
DO  - 10.3390/ijms25021033
ER  - 

@article{
author = "Jovanović, Dunja and Filipović, Ana and Janjić, Goran and Lazarević-Pašti, Tamara and Džambaski, Zdravko and Bondžić, Bojan and Bondžić, Aleksandra",
year = "2024",
abstract = "We have synthesized 22 C-1 functionalized-N-aryl-1,2,3,4-tetrahydroisoquinoline derivatives showing biological activities towards cholinergic enzymes. Synthesis was performed using visible-light-promoted photo-redox chemistry, starting from a common intermediate, and the application of this synthetic methodology drastically simplified synthetic routes and purification of desired compounds. All synthesized derivates were divided into four groups based on the substituents in the C-1 position, and their inhibition potencies towards two cholinergic enzymes, acetyl- and butyrylcholinesterase were evaluated. Most potent derivatives were selected, and kinetic analysis was further carried out to obtain insights into the mechanisms of inhibition of these two enzymes. Further validation of the mode of inhibition of cholinergic enzymes by the two most potent THIQ compounds, 3c and 3i, was performed using fluorescence-quenching titration studies. Molecular docking studies further confirmed the proposed mechanism of enzymes’ inhibition. In silico predictions of physicochemical properties, pharmacokinetics, drug-likeness, and medicinal chemistry friendliness of the selected most potent derivatives were performed using Swiss ADME tool. This was followed by UPLC-assisted log P determination and in vitro BBB permeability studies performed in order to assess the potential of the synthesized compounds to pass the BBB.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates",
volume = "25",
number = "2",
pages = "1033",
doi = "10.3390/ijms25021033"
}

Jovanović, D., Filipović, A., Janjić, G., Lazarević-Pašti, T., Džambaski, Z., Bondžić, B.,& Bondžić, A.. (2024). Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates. in International Journal of Molecular Sciences
MDPI., 25(2), 1033.
https://doi.org/10.3390/ijms25021033

Jovanović D, Filipović A, Janjić G, Lazarević-Pašti T, Džambaski Z, Bondžić B, Bondžić A. Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates. in International Journal of Molecular Sciences. 2024;25(2):1033.
doi:10.3390/ijms25021033 .

Jovanović, Dunja, Filipović, Ana, Janjić, Goran, Lazarević-Pašti, Tamara, Džambaski, Zdravko, Bondžić, Bojan, Bondžić, Aleksandra, "Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates" in International Journal of Molecular Sciences, 25, no. 2 (2024):1033,
https://doi.org/10.3390/ijms25021033 . .

TY  - JOUR
AU  - Milenković, Mila
AU  - Ciasca, Gabriele
AU  - Bonasera, Aurelio
AU  - Scopelliti, Michelangelo
AU  - Marković, Olivera
AU  - Verbić, Tatjana
AU  - Todorović Marković, Biljana
AU  - Jovanović, Svetlana
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7093
AB  - The widespread abuse of traditional antibiotics has led to a global rise in antibiotic-resistant bacteria, which give in return unprecedented health risks. Therefore, there is a large and urgent need for the development of new, smart antibacterial agents able to efficiently kill or inhibit bacterial growth. In this study, we investigated the antibacterial activity of S, N-doped Graphene Quantum Dots (GQDs) as a light-triggered antibacterial agent. Gamma irradiation was employed as a tool to achieve one-step modification of GQDs in the presence of L-cysteine amino acid as a source of heteroatoms. X-ray Photoelectron Spectroscopy (XPS), nuclear magnetic 
resonance (NMR), and zeta potential measurements provided the necessary data to clarify the structure of modified dots and verify the introduction of both S- and N-atoms in GQDs structure, but also severe changes in the aromatic, sp2 domains. Namely, γ-irradiation caused a bonding of S atoms in 1.14 at.% mainly as thiol groups, and N in 1.81 at.% as amino groups, but sp2 contribution in GQD structure was lowered from 63.00 to 4.86 at.%, as measured in dots irradiated at a dose of 200 kGy. Fluorescence quenching measurements showed that L-cysteine-modified dots are able to bind to human serum albumin. The antibacterial activity of GQDs 
combined with 1 and 6 h of blue light (470 nm) irradiation was tested against 8 bacterial strains. GQD-cys-25 sample provided the best results, with minimum inhibitory concentration (MIC) as low as 125 μg/mL against S. aureus, E. faecalis, and E. coli after only 1 h of blue light exposure.
PB  - Elsevier
T2  - Journal of Photochemistry and Photobiology, B: Biology
T1  - Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects
VL  - 250
SP  - 112818
DO  - 10.1016/j.jphotobiol.2023.112818
ER  - 

@article{
author = "Milenković, Mila and Ciasca, Gabriele and Bonasera, Aurelio and Scopelliti, Michelangelo and Marković, Olivera and Verbić, Tatjana and Todorović Marković, Biljana and Jovanović, Svetlana",
year = "2024",
abstract = "The widespread abuse of traditional antibiotics has led to a global rise in antibiotic-resistant bacteria, which give in return unprecedented health risks. Therefore, there is a large and urgent need for the development of new, smart antibacterial agents able to efficiently kill or inhibit bacterial growth. In this study, we investigated the antibacterial activity of S, N-doped Graphene Quantum Dots (GQDs) as a light-triggered antibacterial agent. Gamma irradiation was employed as a tool to achieve one-step modification of GQDs in the presence of L-cysteine amino acid as a source of heteroatoms. X-ray Photoelectron Spectroscopy (XPS), nuclear magnetic 
resonance (NMR), and zeta potential measurements provided the necessary data to clarify the structure of modified dots and verify the introduction of both S- and N-atoms in GQDs structure, but also severe changes in the aromatic, sp2 domains. Namely, γ-irradiation caused a bonding of S atoms in 1.14 at.% mainly as thiol groups, and N in 1.81 at.% as amino groups, but sp2 contribution in GQD structure was lowered from 63.00 to 4.86 at.%, as measured in dots irradiated at a dose of 200 kGy. Fluorescence quenching measurements showed that L-cysteine-modified dots are able to bind to human serum albumin. The antibacterial activity of GQDs 
combined with 1 and 6 h of blue light (470 nm) irradiation was tested against 8 bacterial strains. GQD-cys-25 sample provided the best results, with minimum inhibitory concentration (MIC) as low as 125 μg/mL against S. aureus, E. faecalis, and E. coli after only 1 h of blue light exposure.",
publisher = "Elsevier",
journal = "Journal of Photochemistry and Photobiology, B: Biology",
title = "Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects",
volume = "250",
pages = "112818",
doi = "10.1016/j.jphotobiol.2023.112818"
}

Milenković, M., Ciasca, G., Bonasera, A., Scopelliti, M., Marković, O., Verbić, T., Todorović Marković, B.,& Jovanović, S.. (2024). Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects. in Journal of Photochemistry and Photobiology, B: Biology
Elsevier., 250, 112818.
https://doi.org/10.1016/j.jphotobiol.2023.112818

Milenković M, Ciasca G, Bonasera A, Scopelliti M, Marković O, Verbić T, Todorović Marković B, Jovanović S. Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects. in Journal of Photochemistry and Photobiology, B: Biology. 2024;250:112818.
doi:10.1016/j.jphotobiol.2023.112818 .

Milenković, Mila, Ciasca, Gabriele, Bonasera, Aurelio, Scopelliti, Michelangelo, Marković, Olivera, Verbić, Tatjana, Todorović Marković, Biljana, Jovanović, Svetlana, "Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects" in Journal of Photochemistry and Photobiology, B: Biology, 250 (2024):112818,
https://doi.org/10.1016/j.jphotobiol.2023.112818 . .

TY  - JOUR
AU  - Gojgić-Cvijović, Gordana
AU  - Jakovljević, Dragica
AU  - Živković, Ljiljana S.
AU  - Ćosović, Vladan
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Ivana
AU  - Maravić, Nikola
AU  - Dokić, Ljubica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6560
AB  - In this study, levan from Bacillus licheniformis NS032 was modified in an aqueous medium by octenyl succinic
anhydride (OSA), and the properties of the obtained derivatives were studied. The maximum efficiency in the
synthesis reaction was achieved at 40 ◦C and a polysaccharide slurry concentration of 30 %. Increasing the
reagent concentration (2–10 %) led to an increase in the degree of substitution (0.016–0.048). Structures of
derivatives were confirmed by FTIR and NMR. Scanning electronic microscopy, thermogravimetry, and dynamic
light scattering analyses showed that the derivatives with degrees of substitution of 0.025 and 0.036 retained
levan’s porous structure and thermostability and showed better colloidal stability than the native polysaccharide.
The intrinsic viscosity of derivatives increased upon modification, while the surface tension of the 1 % solution
was lowered to 61 mN/m. Oil-in-water emulsions prepared with sunflower oil (10 % and 20 %) by mechanical
homogenization and 2 and 10 % derivatives in the continuous phase showed mean oil droplet sizes of 106–195
μm, while the distribution curves exhibited bimodal character. The studied derivatives have a good capacity to
stabilize emulsions, as they have a creaming index ranging from 73 % to 94 %. The OSA-modified levans could
have potential applications in new formulations of emulsion-based systems.
PB  - Elsevier
T2  - International Journal of Biological Macromolecules
T1  - Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties
VL  - 242
SP  - 124837
DO  - 10.1016/j.ijbiomac.2023.124837
ER  - 

@article{
author = "Gojgić-Cvijović, Gordana and Jakovljević, Dragica and Živković, Ljiljana S. and Ćosović, Vladan and Pavlović, Vladimir B. and Nikolić, Ivana and Maravić, Nikola and Dokić, Ljubica",
year = "2023",
abstract = "In this study, levan from Bacillus licheniformis NS032 was modified in an aqueous medium by octenyl succinic
anhydride (OSA), and the properties of the obtained derivatives were studied. The maximum efficiency in the
synthesis reaction was achieved at 40 ◦C and a polysaccharide slurry concentration of 30 %. Increasing the
reagent concentration (2–10 %) led to an increase in the degree of substitution (0.016–0.048). Structures of
derivatives were confirmed by FTIR and NMR. Scanning electronic microscopy, thermogravimetry, and dynamic
light scattering analyses showed that the derivatives with degrees of substitution of 0.025 and 0.036 retained
levan’s porous structure and thermostability and showed better colloidal stability than the native polysaccharide.
The intrinsic viscosity of derivatives increased upon modification, while the surface tension of the 1 % solution
was lowered to 61 mN/m. Oil-in-water emulsions prepared with sunflower oil (10 % and 20 %) by mechanical
homogenization and 2 and 10 % derivatives in the continuous phase showed mean oil droplet sizes of 106–195
μm, while the distribution curves exhibited bimodal character. The studied derivatives have a good capacity to
stabilize emulsions, as they have a creaming index ranging from 73 % to 94 %. The OSA-modified levans could
have potential applications in new formulations of emulsion-based systems.",
publisher = "Elsevier",
journal = "International Journal of Biological Macromolecules",
title = "Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties",
volume = "242",
pages = "124837",
doi = "10.1016/j.ijbiomac.2023.124837"
}

Gojgić-Cvijović, G., Jakovljević, D., Živković, L. S., Ćosović, V., Pavlović, V. B., Nikolić, I., Maravić, N.,& Dokić, L.. (2023). Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties. in International Journal of Biological Macromolecules
Elsevier., 242, 124837.
https://doi.org/10.1016/j.ijbiomac.2023.124837

Gojgić-Cvijović G, Jakovljević D, Živković LS, Ćosović V, Pavlović VB, Nikolić I, Maravić N, Dokić L. Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties. in International Journal of Biological Macromolecules. 2023;242:124837.
doi:10.1016/j.ijbiomac.2023.124837 .

Gojgić-Cvijović, Gordana, Jakovljević, Dragica, Živković, Ljiljana S., Ćosović, Vladan, Pavlović, Vladimir B., Nikolić, Ivana, Maravić, Nikola, Dokić, Ljubica, "Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties" in International Journal of Biological Macromolecules, 242 (2023):124837,
https://doi.org/10.1016/j.ijbiomac.2023.124837 . .

TY  - JOUR
AU  - Ognjanović, Miloš
AU  - Jaćimović, Željko
AU  - Kosović-Perutović, Milica
AU  - Besu Žižak, Irina
AU  - Stanojković, Tatjana
AU  - Žižak, Željko
AU  - Dojčinović, Biljana
AU  - Stanković, Dalibor M.
AU  - Antić, Bratislav
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6420
AB  - Partial cation substitution can significantly change the physical properties of parent compounds. By controlling the chemical composition and knowing the mutual relationship between composition and physical properties, it is possible to tailor the properties of materials to those that are superior for desired technological application. Using the polyol synthesis procedure, a series of yttrium-substituted iron oxide nanoconstructs, γ-Fe2−xYxO3 (YIONs), was prepared. It was found that Y3+ could substitute Fe3+ in the crystal structures of maghemite (γ-Fe2O3) up to a limited concentration of ~1.5% (γ-Fe1.969Y0.031O3). Analysis of TEM micrographs showed that crystallites or particles were aggregated in flower-like structures with diameters from 53.7 ± 6.2 nm to 97.3 ± 37.0 nm, depending on yttrium concentration. To be investigated for potential applications as magnetic hyperthermia agents, YIONs were tested twice: their heating efficiency was tested and their toxicity was investigated. The Specific Absorption Rate (SAR) values were in the range of 32.6 W/g to 513 W/g and significantly decreased with increased yttrium concentration in the samples. Intrinsic loss power (ILP) for γ-Fe2O3 and γ-Fe1.995Y0.005O3 were ~8–9 nH·m2/Kg, which pointed to their excellent heating efficiency. IC50 values of investigated samples against cancer (HeLa) and normal (MRC-5) cells decreased with increased yttrium concentration and were higher than ~300 μg/mL. The samples of γ-Fe2−xYxO3 did not show a genotoxic effect. The results of toxicity studies show that YIONs are suitable for further in vitro/in vivo studies toward to their potential medical applications, while results of heat generation point to their potential use in magnetic hyperthermia cancer treatment or use as self-heating systems for other technological applications such as catalysis.
T2  - Nanomaterials
T1  - Self-Heating Flower-like Nanoconstructs with Limited Incorporation of Yttrium in Maghemite: Effect of Chemical Composition on Heating Efficiency, Cytotoxicity and Genotoxicity
VL  - 13
IS  - 5
SP  - 870
DO  - 10.3390/nano13050870
ER  - 

@article{
author = "Ognjanović, Miloš and Jaćimović, Željko and Kosović-Perutović, Milica and Besu Žižak, Irina and Stanojković, Tatjana and Žižak, Željko and Dojčinović, Biljana and Stanković, Dalibor M. and Antić, Bratislav",
year = "2023",
abstract = "Partial cation substitution can significantly change the physical properties of parent compounds. By controlling the chemical composition and knowing the mutual relationship between composition and physical properties, it is possible to tailor the properties of materials to those that are superior for desired technological application. Using the polyol synthesis procedure, a series of yttrium-substituted iron oxide nanoconstructs, γ-Fe2−xYxO3 (YIONs), was prepared. It was found that Y3+ could substitute Fe3+ in the crystal structures of maghemite (γ-Fe2O3) up to a limited concentration of ~1.5% (γ-Fe1.969Y0.031O3). Analysis of TEM micrographs showed that crystallites or particles were aggregated in flower-like structures with diameters from 53.7 ± 6.2 nm to 97.3 ± 37.0 nm, depending on yttrium concentration. To be investigated for potential applications as magnetic hyperthermia agents, YIONs were tested twice: their heating efficiency was tested and their toxicity was investigated. The Specific Absorption Rate (SAR) values were in the range of 32.6 W/g to 513 W/g and significantly decreased with increased yttrium concentration in the samples. Intrinsic loss power (ILP) for γ-Fe2O3 and γ-Fe1.995Y0.005O3 were ~8–9 nH·m2/Kg, which pointed to their excellent heating efficiency. IC50 values of investigated samples against cancer (HeLa) and normal (MRC-5) cells decreased with increased yttrium concentration and were higher than ~300 μg/mL. The samples of γ-Fe2−xYxO3 did not show a genotoxic effect. The results of toxicity studies show that YIONs are suitable for further in vitro/in vivo studies toward to their potential medical applications, while results of heat generation point to their potential use in magnetic hyperthermia cancer treatment or use as self-heating systems for other technological applications such as catalysis.",
journal = "Nanomaterials",
title = "Self-Heating Flower-like Nanoconstructs with Limited Incorporation of Yttrium in Maghemite: Effect of Chemical Composition on Heating Efficiency, Cytotoxicity and Genotoxicity",
volume = "13",
number = "5",
pages = "870",
doi = "10.3390/nano13050870"
}

Ognjanović, M., Jaćimović, Ž., Kosović-Perutović, M., Besu Žižak, I., Stanojković, T., Žižak, Ž., Dojčinović, B., Stanković, D. M.,& Antić, B.. (2023). Self-Heating Flower-like Nanoconstructs with Limited Incorporation of Yttrium in Maghemite: Effect of Chemical Composition on Heating Efficiency, Cytotoxicity and Genotoxicity. in Nanomaterials, 13(5), 870.
https://doi.org/10.3390/nano13050870

Ognjanović M, Jaćimović Ž, Kosović-Perutović M, Besu Žižak I, Stanojković T, Žižak Ž, Dojčinović B, Stanković DM, Antić B. Self-Heating Flower-like Nanoconstructs with Limited Incorporation of Yttrium in Maghemite: Effect of Chemical Composition on Heating Efficiency, Cytotoxicity and Genotoxicity. in Nanomaterials. 2023;13(5):870.
doi:10.3390/nano13050870 .

Ognjanović, Miloš, Jaćimović, Željko, Kosović-Perutović, Milica, Besu Žižak, Irina, Stanojković, Tatjana, Žižak, Željko, Dojčinović, Biljana, Stanković, Dalibor M., Antić, Bratislav, "Self-Heating Flower-like Nanoconstructs with Limited Incorporation of Yttrium in Maghemite: Effect of Chemical Composition on Heating Efficiency, Cytotoxicity and Genotoxicity" in Nanomaterials, 13, no. 5 (2023):870,
https://doi.org/10.3390/nano13050870 . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Petronijević, Ivan
AU  - Mirković, Miljana
AU  - Kremenović, Aleksandar
AU  - Džunuzović, Adis
AU  - Pavlović, Vladimir B.
AU  - Kalezić-Glišović, Aleksandra
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5865
AB  - To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.
PB  - MDPI
T2  - Inorganics
T1  - BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
VL  - 11
IS  - 2
SP  - 51
DO  - 10.3390/inorganics11020051
ER  - 

@article{
author = "Šuljagić, Marija and Petronijević, Ivan and Mirković, Miljana and Kremenović, Aleksandar and Džunuzović, Adis and Pavlović, Vladimir B. and Kalezić-Glišović, Aleksandra and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.",
publisher = "MDPI",
journal = "Inorganics",
title = "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties",
volume = "11",
number = "2",
pages = "51",
doi = "10.3390/inorganics11020051"
}

Šuljagić, M., Petronijević, I., Mirković, M., Kremenović, A., Džunuzović, A., Pavlović, V. B., Kalezić-Glišović, A.,& Anđelković, L.. (2023). BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics
MDPI., 11(2), 51.
https://doi.org/10.3390/inorganics11020051

Šuljagić M, Petronijević I, Mirković M, Kremenović A, Džunuzović A, Pavlović VB, Kalezić-Glišović A, Anđelković L. BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics. 2023;11(2):51.
doi:10.3390/inorganics11020051 .

Šuljagić, Marija, Petronijević, Ivan, Mirković, Miljana, Kremenović, Aleksandar, Džunuzović, Adis, Pavlović, Vladimir B., Kalezić-Glišović, Aleksandra, Anđelković, Ljubica, "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, 11, no. 2 (2023):51,
https://doi.org/10.3390/inorganics11020051 . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Kremenović, Aleksandar
AU  - Petronijević, Ivan
AU  - Džunuzović, Adis
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6643
AB  - To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300 °C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.
AB  - У циљу испитивања утицаја методе синтезе као и температуре синтеровања на функционална својства керамике перовскитно/спинелне структуре, синтетисани су BaTiO3/CoFe2O4 композити методама термалне декомпозиције, копреципитације и микроемулзије, а затим синтеровани на 1150 °C и 1300 °C. Фазни састав и морфологија синтетисаних узорака детаљно су испитани пре и после синтеровања помоћу рендгенске дифракције на праху (XRPD) и скенирајуће електронске микроскпије (SEM) спрегнуте са елекрон дисперзивном спектроскопијом (EDS). Изведена су опсежна испитивања како диелектричних, тако и фероелектричних својстава датих композита. У већини случајева узорци синтеровани на 1300 °C показали су боља својства од узорака синтерованих на 1150 °C. Композит синтетисан методом термалне декомпозиције и синтерован на 1300 °C издваја се од осталих синтетисаних BaTiO3/CoFe2O4 узорака захваљујући великој стабилносту у широком фреквентном опсегу и малим струјама цурења. Добијени резултати недвосмислено указују да истакнути композит може бити успешно примењен као функционални мултифероик.
PB  - Association for ETRAN Society
T2  - Science of Sintering
T1  - Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites
VL  - 55
SP  - 367
EP  - 381
DO  - 10.2298/SOS220512013S
ER  - 

@article{
author = "Šuljagić, Marija and Kremenović, Aleksandar and Petronijević, Ivan and Džunuzović, Adis and Mirković, Miljana and Pavlović, Vladimir and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300 °C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic., У циљу испитивања утицаја методе синтезе као и температуре синтеровања на функционална својства керамике перовскитно/спинелне структуре, синтетисани су BaTiO3/CoFe2O4 композити методама термалне декомпозиције, копреципитације и микроемулзије, а затим синтеровани на 1150 °C и 1300 °C. Фазни састав и морфологија синтетисаних узорака детаљно су испитани пре и после синтеровања помоћу рендгенске дифракције на праху (XRPD) и скенирајуће електронске микроскпије (SEM) спрегнуте са елекрон дисперзивном спектроскопијом (EDS). Изведена су опсежна испитивања како диелектричних, тако и фероелектричних својстава датих композита. У већини случајева узорци синтеровани на 1300 °C показали су боља својства од узорака синтерованих на 1150 °C. Композит синтетисан методом термалне декомпозиције и синтерован на 1300 °C издваја се од осталих синтетисаних BaTiO3/CoFe2O4 узорака захваљујући великој стабилносту у широком фреквентном опсегу и малим струјама цурења. Добијени резултати недвосмислено указују да истакнути композит може бити успешно примењен као функционални мултифероик.",
publisher = "Association for ETRAN Society",
journal = "Science of Sintering",
title = "Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites",
volume = "55",
pages = "367-381",
doi = "10.2298/SOS220512013S"
}

Šuljagić, M., Kremenović, A., Petronijević, I., Džunuzović, A., Mirković, M., Pavlović, V.,& Anđelković, L.. (2023). Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites. in Science of Sintering
Association for ETRAN Society., 55, 367-381.
https://doi.org/10.2298/SOS220512013S

Šuljagić M, Kremenović A, Petronijević I, Džunuzović A, Mirković M, Pavlović V, Anđelković L. Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites. in Science of Sintering. 2023;55:367-381.
doi:10.2298/SOS220512013S .

Šuljagić, Marija, Kremenović, Aleksandar, Petronijević, Ivan, Džunuzović, Adis, Mirković, Miljana, Pavlović, Vladimir, Anđelković, Ljubica, "Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites" in Science of Sintering, 55 (2023):367-381,
https://doi.org/10.2298/SOS220512013S . .

TY  - CONF
AU  - Perić, Marko
AU  - Vuković, George
AU  - Knežević, Sanja
AU  - Nikolić, Milan
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Nenadović, Snežana
AU  - Ivanović, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vladmir B.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6022
AB  - Radiation shielding is a crucial precautionary measure in decreasing the dose of exposure medical personnel experience. The physical dimensions of these shields, specifically thickness and shape, are dependent on the type of radiation, energy and specific radioactivity. Currently, the most common radiation shielding equipment is made of lead, tungsten or uranium. Although these heavy metals have favorable shielding properties against ionizing radiation, protective garments such as lead aprons are heavy to wear and can pose significant health risks. Taking this into account, the primary goal of this study is to understand the radiation shielding properties of lead-free polymer geopolymer-polyurethane based composites. The geopolymer was synthesized using an 80%-20% mixture of fly ash and a bio-polyol substrate which was subsequently homogenized using MDI44. As a result, 6 samples of the geopolymer-polyurethane based composites were fabricated of which 5 were 90%-10% compositions between the mixture and varying concentrations of BaSO4 and Bi2O3 respectively. The last sample consisted of the pure fly ash/bio-polyol mixture. XRF and ICP analysis was used to chemically characterize the fly ash. The composite structures were analyzed using XRD, while the microstructural morphology was investigated using SEM techniques. Utilizing an energy-dispersive x-ray spectrometer (EDS), elemental abundance and agglomerating behavior was analyzed for each composite variant. The X-ray attenuation measurements pointed out that the obtained composites have the potential for a design of lead-free protective clothing against X-ray shielding in medical applications.
PB  - Bucharest: SRMNIM
C3  - Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania
T1  - Lead Free Polymer Composites for Radiation Shielding
SP  - 17
SP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_cer_6022
ER  - 

@conference{
author = "Perić, Marko and Vuković, George and Knežević, Sanja and Nikolić, Milan and Šuljagić, Marija and Anđelković, Ljubica and Nenadović, Snežana and Ivanović, Marija and Mirković, Miljana and Pavlović, Vladmir B.",
year = "2023",
abstract = "Radiation shielding is a crucial precautionary measure in decreasing the dose of exposure medical personnel experience. The physical dimensions of these shields, specifically thickness and shape, are dependent on the type of radiation, energy and specific radioactivity. Currently, the most common radiation shielding equipment is made of lead, tungsten or uranium. Although these heavy metals have favorable shielding properties against ionizing radiation, protective garments such as lead aprons are heavy to wear and can pose significant health risks. Taking this into account, the primary goal of this study is to understand the radiation shielding properties of lead-free polymer geopolymer-polyurethane based composites. The geopolymer was synthesized using an 80%-20% mixture of fly ash and a bio-polyol substrate which was subsequently homogenized using MDI44. As a result, 6 samples of the geopolymer-polyurethane based composites were fabricated of which 5 were 90%-10% compositions between the mixture and varying concentrations of BaSO4 and Bi2O3 respectively. The last sample consisted of the pure fly ash/bio-polyol mixture. XRF and ICP analysis was used to chemically characterize the fly ash. The composite structures were analyzed using XRD, while the microstructural morphology was investigated using SEM techniques. Utilizing an energy-dispersive x-ray spectrometer (EDS), elemental abundance and agglomerating behavior was analyzed for each composite variant. The X-ray attenuation measurements pointed out that the obtained composites have the potential for a design of lead-free protective clothing against X-ray shielding in medical applications.",
publisher = "Bucharest: SRMNIM",
journal = "Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania",
title = "Lead Free Polymer Composites for Radiation Shielding",
pages = "17-17",
url = "https://hdl.handle.net/21.15107/rcub_cer_6022"
}

Perić, M., Vuković, G., Knežević, S., Nikolić, M., Šuljagić, M., Anđelković, L., Nenadović, S., Ivanović, M., Mirković, M.,& Pavlović, V. B.. (2023). Lead Free Polymer Composites for Radiation Shielding. in Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania
Bucharest: SRMNIM., 17.
https://hdl.handle.net/21.15107/rcub_cer_6022

Perić M, Vuković G, Knežević S, Nikolić M, Šuljagić M, Anđelković L, Nenadović S, Ivanović M, Mirković M, Pavlović VB. Lead Free Polymer Composites for Radiation Shielding. in Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania. 2023;:17.
https://hdl.handle.net/21.15107/rcub_cer_6022 .

Perić, Marko, Vuković, George, Knežević, Sanja, Nikolić, Milan, Šuljagić, Marija, Anđelković, Ljubica, Nenadović, Snežana, Ivanović, Marija, Mirković, Miljana, Pavlović, Vladmir B., "Lead Free Polymer Composites for Radiation Shielding" in Abstracts E-Book, 10th Balkan Congress of Nuclear Medicine & 5th Romanian Congress of Nuclear Medicine, 15-18 March, 2023, Bucharest, Romania (2023):17,
https://hdl.handle.net/21.15107/rcub_cer_6022 .

TY  - JOUR
AU  - Alazreg, Asma
AU  - Vuksanović, Marija M.
AU  - Egelja, Adela
AU  - Mladenović, Ivana O.
AU  - Radovanović, Željko
AU  - Petrović, Miloš
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6582
AB  - Acrylate polymers are used in several applications such as dentistry, medicine,
and industry. The modification of their properties using the reinforcement is
of key importance for the possible applications. Layered double hydroxides are
materials that are easily synthesized by several techniques giving the possibility to modulate the chemical composition and morphology of the reinforcement and they consist of a divalent and a trivalent anion hydroxide and the
layers can be exfoliated and thus provide a material interesting for composite
reinforcement. In this paper, Mn was used as a divalent and Al as a trivalent
cation. The obtained particles were used as reinforcement for the preparation
of composites in 1, 3, and 5 wt% quantities and prepared samples were compared to the matrix consisting of PMMA. Physical mechanical properties of the
sample having the best mechanical properties (with 3 wt% of MnAl-LDH
filers) exhibited 6.38% modulus of elasticity, 27% hardness, and 10% tensile
strength improved values compared to the clear PMMA matrix. Toughness
was lowered in this sort of composite compared to the pure matrix.
PB  - Willey
T2  - Polymer Composites
T1  - Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide
VL  - 44
IS  - 10
SP  - 6783
EP  - 6783
DO  - https://doi.org/10.1002/pc.27597
ER  - 

@article{
author = "Alazreg, Asma and Vuksanović, Marija M. and Egelja, Adela and Mladenović, Ivana O. and Radovanović, Željko and Petrović, Miloš and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2023",
abstract = "Acrylate polymers are used in several applications such as dentistry, medicine,
and industry. The modification of their properties using the reinforcement is
of key importance for the possible applications. Layered double hydroxides are
materials that are easily synthesized by several techniques giving the possibility to modulate the chemical composition and morphology of the reinforcement and they consist of a divalent and a trivalent anion hydroxide and the
layers can be exfoliated and thus provide a material interesting for composite
reinforcement. In this paper, Mn was used as a divalent and Al as a trivalent
cation. The obtained particles were used as reinforcement for the preparation
of composites in 1, 3, and 5 wt% quantities and prepared samples were compared to the matrix consisting of PMMA. Physical mechanical properties of the
sample having the best mechanical properties (with 3 wt% of MnAl-LDH
filers) exhibited 6.38% modulus of elasticity, 27% hardness, and 10% tensile
strength improved values compared to the clear PMMA matrix. Toughness
was lowered in this sort of composite compared to the pure matrix.",
publisher = "Willey",
journal = "Polymer Composites",
title = "Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide",
volume = "44",
number = "10",
pages = "6783-6783",
doi = "https://doi.org/10.1002/pc.27597"
}

Alazreg, A., Vuksanović, M. M., Egelja, A., Mladenović, I. O., Radovanović, Ž., Petrović, M., Marinković, A.,& Jančić-Heinemann, R.. (2023). Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide. in Polymer Composites
Willey., 44(10), 6783-6783.
https://doi.org/https://doi.org/10.1002/pc.27597

Alazreg A, Vuksanović MM, Egelja A, Mladenović IO, Radovanović Ž, Petrović M, Marinković A, Jančić-Heinemann R. Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide. in Polymer Composites. 2023;44(10):6783-6783.
doi:https://doi.org/10.1002/pc.27597 .

Alazreg, Asma, Vuksanović, Marija M., Egelja, Adela, Mladenović, Ivana O., Radovanović, Željko, Petrović, Miloš, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide" in Polymer Composites, 44, no. 10 (2023):6783-6783,
https://doi.org/https://doi.org/10.1002/pc.27597 . .

TY  - CONF
AU  - Bošnjaković, Jovana
AU  - Knežević, Nataša
AU  - Marinković, Aleksandar
AU  - Manasijević, Srećko
AU  - Savić, Andrija
AU  - Milošević, Milena
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6251
AB  - Population growth, the development of agriculture, industry, and mining, caused the creation of an increasing amount of  wastewater. Due to the discharge of wastewater, without prior treatment, the quality of water resources is impaired.  Polluting substances, such as pesticides, have a negative impact on human health and the environment. Heavy pollution  of both surface and underground water is one of the biggest problems associated with the use of pesticides. They reach  human organisms indirectly via agricultural products. Most pesticides are more or less toxic, some of them are highly  soluble in water. In recent years, special attention has been paid to the development of methods for the treatment of  wastewater contaminated with pesticide residues, in order to partially reduce or eliminate their further impact on humans,  plants, and the environment. Among many processes, the photocatalytic degradation process has proven to be a very  effective process for the removal of pesticides from wastewater. Photocatalytic degradation implies the breakdown of  various types of toxic organic substances into simpler molecules, such as ions, water, etc.  In this paper, the photocatalytic degradation of the pesticide mesotrione (MS) using ZnO photocatalyst is presented. The  degradation of the pesticide compound was studied using Shimadzu 1800 analytical UV-VIS spectroscopy. As a  replacement for UVC radiation, a solar-imitated irradiation Ultra Vitalux (UV) lamp (300W) was used. Degradation  kinetics follows pseudo-first order. After 240 minutes, the MS was completely degraded.
PB  - Association of Metallurgical Engineers of Serbia (AMES)
C3  - Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina
T1  - Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source
SP  - 383
EP  - 387
UR  - https://hdl.handle.net/21.15107/rcub_cer_6251
ER  - 

@conference{
author = "Bošnjaković, Jovana and Knežević, Nataša and Marinković, Aleksandar and Manasijević, Srećko and Savić, Andrija and Milošević, Milena",
year = "2023",
abstract = "Population growth, the development of agriculture, industry, and mining, caused the creation of an increasing amount of  wastewater. Due to the discharge of wastewater, without prior treatment, the quality of water resources is impaired.  Polluting substances, such as pesticides, have a negative impact on human health and the environment. Heavy pollution  of both surface and underground water is one of the biggest problems associated with the use of pesticides. They reach  human organisms indirectly via agricultural products. Most pesticides are more or less toxic, some of them are highly  soluble in water. In recent years, special attention has been paid to the development of methods for the treatment of  wastewater contaminated with pesticide residues, in order to partially reduce or eliminate their further impact on humans,  plants, and the environment. Among many processes, the photocatalytic degradation process has proven to be a very  effective process for the removal of pesticides from wastewater. Photocatalytic degradation implies the breakdown of  various types of toxic organic substances into simpler molecules, such as ions, water, etc.  In this paper, the photocatalytic degradation of the pesticide mesotrione (MS) using ZnO photocatalyst is presented. The  degradation of the pesticide compound was studied using Shimadzu 1800 analytical UV-VIS spectroscopy. As a  replacement for UVC radiation, a solar-imitated irradiation Ultra Vitalux (UV) lamp (300W) was used. Degradation  kinetics follows pseudo-first order. After 240 minutes, the MS was completely degraded.",
publisher = "Association of Metallurgical Engineers of Serbia (AMES)",
journal = "Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina",
title = "Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source",
pages = "383-387",
url = "https://hdl.handle.net/21.15107/rcub_cer_6251"
}

Bošnjaković, J., Knežević, N., Marinković, A., Manasijević, S., Savić, A.,& Milošević, M.. (2023). Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source. in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina
Association of Metallurgical Engineers of Serbia (AMES)., 383-387.
https://hdl.handle.net/21.15107/rcub_cer_6251

Bošnjaković J, Knežević N, Marinković A, Manasijević S, Savić A, Milošević M. Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source. in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina. 2023;:383-387.
https://hdl.handle.net/21.15107/rcub_cer_6251 .

Bošnjaković, Jovana, Knežević, Nataša, Marinković, Aleksandar, Manasijević, Srećko, Savić, Andrija, Milošević, Milena, "Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source" in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina (2023):383-387,
https://hdl.handle.net/21.15107/rcub_cer_6251 .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Vuksanović, Marija
AU  - Jovanov, Vladislav
AU  - Radovanović, Željko
AU  - Obradov, Marko
AU  - Nikolić, Nebojša D.
AU  - Vasiljević-Radović, Dana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6778
AB  - Electrochemically deposited nickel coatings from
sulfamate baths without/with lab-made biosilica (SiO2) particles on
the Si(100) substrate were produced. Different galvanostatic
regimes were used: direct current (DC), pulse current (PC), and
pulse-reverse current (PRC) regimes. The phase structure of the
synthesized silica nanoparticles from rice husks was obtained using
XRD and FE-SEM. The MMC-Ni/SiO2 and free Ni coatings were
characterized using FE-SEM, AFM, the micro indentation Vickers
technique, and the drop sessile method in order to investigate
structure, roughness, microhardness, and wettability. The optimal
deposition parameters were obtained with an emphasis on their
potential application as micro mounting coatings.
PB  - Electron Devices Society of the IInstitute of electrical and electronics engineers, inc.
C3  - Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia
T1  - Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks
SP  - 241
EP  - 244
UR  - https://hdl.handle.net/21.15107/rcub_cer_6778
ER  - 

@conference{
author = "Mladenović, Ivana and Vuksanović, Marija and Jovanov, Vladislav and Radovanović, Željko and Obradov, Marko and Nikolić, Nebojša D. and Vasiljević-Radović, Dana",
year = "2023",
abstract = "Electrochemically deposited nickel coatings from
sulfamate baths without/with lab-made biosilica (SiO2) particles on
the Si(100) substrate were produced. Different galvanostatic
regimes were used: direct current (DC), pulse current (PC), and
pulse-reverse current (PRC) regimes. The phase structure of the
synthesized silica nanoparticles from rice husks was obtained using
XRD and FE-SEM. The MMC-Ni/SiO2 and free Ni coatings were
characterized using FE-SEM, AFM, the micro indentation Vickers
technique, and the drop sessile method in order to investigate
structure, roughness, microhardness, and wettability. The optimal
deposition parameters were obtained with an emphasis on their
potential application as micro mounting coatings.",
publisher = "Electron Devices Society of the IInstitute of electrical and electronics engineers, inc.",
journal = "Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia",
title = "Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks",
pages = "241-244",
url = "https://hdl.handle.net/21.15107/rcub_cer_6778"
}

Mladenović, I., Vuksanović, M., Jovanov, V., Radovanović, Ž., Obradov, M., Nikolić, N. D.,& Vasiljević-Radović, D.. (2023). Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks. in Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia
Electron Devices Society of the IInstitute of electrical and electronics engineers, inc.., 241-244.
https://hdl.handle.net/21.15107/rcub_cer_6778

Mladenović I, Vuksanović M, Jovanov V, Radovanović Ž, Obradov M, Nikolić ND, Vasiljević-Radović D. Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks. in Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia. 2023;:241-244.
https://hdl.handle.net/21.15107/rcub_cer_6778 .

Mladenović, Ivana, Vuksanović, Marija, Jovanov, Vladislav, Radovanović, Željko, Obradov, Marko, Nikolić, Nebojša D., Vasiljević-Radović, Dana, "Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks" in Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia (2023):241-244,
https://hdl.handle.net/21.15107/rcub_cer_6778 .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Vuksanović, Marija
AU  - Obradov, Marko
AU  - Jovanov, Vladislav
AU  - Vorkapić, Miloš
AU  - Nikolić, Nebojša D.
AU  - Vasiljević-Radović, Dana
PY  - 2023
UR  - https://www.etran.rs/2023/E_PROCEEDINGS_ICETRAN_2023/IcETRAN23_RADOVI/MOI1.3.pdf
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6253
AB  - In this study, different forms of copper films were
electrodeposited (ED) on silicon wafer, copper and brass foils.
The effect of monocrystalline Si(111) surface cleaning method
and electrodeposition conditions and regimes (frequency in the
pulsating current (PC) regime, an addition of additives in
electrolyte for the constant galvanostatic (DC) regime, and
thickness) on surface morphology and wettability of copper films
was investigated. Optical microscopy equipped with highresolution camera, scanning electron microscopy (SEM) and an
atomic force microscopy (AFM) were used for thin film
characterization and to evaluate wettability of copper films. The
sessile drop method was used for the measurement of water
contact angle. According to the obtained results, choice of
electrolyte used in ED greatly affects wettability of copper films.
It was also shown that copper films electrodeposited from basic
sulfate electrolyte with varying current regimes frequencies,
thicknesses, and cathode types have opposite trends between
roughness parameter values and the water contact angle value.
Structural-morphological changes of a film or bulk solid surface
are key parameters in determining wettability properties and the
analysis of the wetting angle oscillations, but not the only one.
PB  - Society for Electronics, Telecommunications, Computers, Automatic Control and Nuclear Engineering
C3  - Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H
T1  - Wettability of electrodeposited copper films and correlation with morphology and surface chemistry
VL  - MOI1.3-6
SP  - MOI1.3-1
UR  - https://hdl.handle.net/21.15107/rcub_cer_6253
ER  - 

@conference{
author = "Mladenović, Ivana and Vuksanović, Marija and Obradov, Marko and Jovanov, Vladislav and Vorkapić, Miloš and Nikolić, Nebojša D. and Vasiljević-Radović, Dana",
year = "2023",
abstract = "In this study, different forms of copper films were
electrodeposited (ED) on silicon wafer, copper and brass foils.
The effect of monocrystalline Si(111) surface cleaning method
and electrodeposition conditions and regimes (frequency in the
pulsating current (PC) regime, an addition of additives in
electrolyte for the constant galvanostatic (DC) regime, and
thickness) on surface morphology and wettability of copper films
was investigated. Optical microscopy equipped with highresolution camera, scanning electron microscopy (SEM) and an
atomic force microscopy (AFM) were used for thin film
characterization and to evaluate wettability of copper films. The
sessile drop method was used for the measurement of water
contact angle. According to the obtained results, choice of
electrolyte used in ED greatly affects wettability of copper films.
It was also shown that copper films electrodeposited from basic
sulfate electrolyte with varying current regimes frequencies,
thicknesses, and cathode types have opposite trends between
roughness parameter values and the water contact angle value.
Structural-morphological changes of a film or bulk solid surface
are key parameters in determining wettability properties and the
analysis of the wetting angle oscillations, but not the only one.",
publisher = "Society for Electronics, Telecommunications, Computers, Automatic Control and Nuclear Engineering",
journal = "Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H",
title = "Wettability of electrodeposited copper films and correlation with morphology and surface chemistry",
volume = "MOI1.3-6",
pages = "MOI1.3-1",
url = "https://hdl.handle.net/21.15107/rcub_cer_6253"
}

Mladenović, I., Vuksanović, M., Obradov, M., Jovanov, V., Vorkapić, M., Nikolić, N. D.,& Vasiljević-Radović, D.. (2023). Wettability of electrodeposited copper films and correlation with morphology and surface chemistry. in Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H
Society for Electronics, Telecommunications, Computers, Automatic Control and Nuclear Engineering., MOI1.3-6, MOI1.3-1.
https://hdl.handle.net/21.15107/rcub_cer_6253

Mladenović I, Vuksanović M, Obradov M, Jovanov V, Vorkapić M, Nikolić ND, Vasiljević-Radović D. Wettability of electrodeposited copper films and correlation with morphology and surface chemistry. in Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H. 2023;MOI1.3-6:MOI1.3-1.
https://hdl.handle.net/21.15107/rcub_cer_6253 .

Mladenović, Ivana, Vuksanović, Marija, Obradov, Marko, Jovanov, Vladislav, Vorkapić, Miloš, Nikolić, Nebojša D., Vasiljević-Radović, Dana, "Wettability of electrodeposited copper films and correlation with morphology and surface chemistry" in Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H, MOI1.3-6 (2023):MOI1.3-1,
https://hdl.handle.net/21.15107/rcub_cer_6253 .

TY  - JOUR
AU  - Mladenović, Ivana O.
AU  - Vuksanović, Marija M.
AU  - Dimitrijević, Stevan P.
AU  - Vasilić, Rastko
AU  - Radojević, Vesna J.
AU  - Vasiljević-Radović, Dana G.
AU  - Nikolić, Nebojša D.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7108
AB  - Copper from sulfate baths without and with added inorganic pigment particles based on strontium aluminate doped with europium and dysprosium (SrAl2O4: Eu2+, Dy3+) was electrodeposited on a brass cathode by a galvanostatic regime. Morphological, structural, and roughness analysis of the pigment particles, the pure (pigment-free) Cu coating, and the Cu coatings with incorporated pigment particles were performed using SEM, XRD, and AFM techniques, respectively. Hardness and creep resistance were considered for the examination of the mechanical properties of the Cu coatings, applying Chicot–Lesage (for hardness) and Sargent–Ashby (for creep resistance) mathematical models. The wettability of the Cu coatings was examined by the static sessile drop method by a measurement of the water contact angle. The incorporation of pigment particles in the Cu deposits did not significantly affect the morphology or texture of the coatings, while the roughness of the deposits rose with the rise in pigment particle concentrations. The hardness of the Cu coatings also increased with the increasing concentration of pigments and was greater than that obtained for the pigment-free Cu coating. The presence of the pigments caused a change in the wettability of the Cu coatings from hydrophilic (for the pigment-free Cu coating) to hydrophobic (for Cu coatings with incorporated particles) surface areas.
PB  - MDPI
T2  - Metals
T1  - Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles
VL  - 13
IS  - 12
SP  - 1979
DO  - 10.3390/met13121979
ER  - 

@article{
author = "Mladenović, Ivana O. and Vuksanović, Marija M. and Dimitrijević, Stevan P. and Vasilić, Rastko and Radojević, Vesna J. and Vasiljević-Radović, Dana G. and Nikolić, Nebojša D.",
year = "2023",
abstract = "Copper from sulfate baths without and with added inorganic pigment particles based on strontium aluminate doped with europium and dysprosium (SrAl2O4: Eu2+, Dy3+) was electrodeposited on a brass cathode by a galvanostatic regime. Morphological, structural, and roughness analysis of the pigment particles, the pure (pigment-free) Cu coating, and the Cu coatings with incorporated pigment particles were performed using SEM, XRD, and AFM techniques, respectively. Hardness and creep resistance were considered for the examination of the mechanical properties of the Cu coatings, applying Chicot–Lesage (for hardness) and Sargent–Ashby (for creep resistance) mathematical models. The wettability of the Cu coatings was examined by the static sessile drop method by a measurement of the water contact angle. The incorporation of pigment particles in the Cu deposits did not significantly affect the morphology or texture of the coatings, while the roughness of the deposits rose with the rise in pigment particle concentrations. The hardness of the Cu coatings also increased with the increasing concentration of pigments and was greater than that obtained for the pigment-free Cu coating. The presence of the pigments caused a change in the wettability of the Cu coatings from hydrophilic (for the pigment-free Cu coating) to hydrophobic (for Cu coatings with incorporated particles) surface areas.",
publisher = "MDPI",
journal = "Metals",
title = "Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles",
volume = "13",
number = "12",
pages = "1979",
doi = "10.3390/met13121979"
}

Mladenović, I. O., Vuksanović, M. M., Dimitrijević, S. P., Vasilić, R., Radojević, V. J., Vasiljević-Radović, D. G.,& Nikolić, N. D.. (2023). Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles. in Metals
MDPI., 13(12), 1979.
https://doi.org/10.3390/met13121979

Mladenović IO, Vuksanović MM, Dimitrijević SP, Vasilić R, Radojević VJ, Vasiljević-Radović DG, Nikolić ND. Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles. in Metals. 2023;13(12):1979.
doi:10.3390/met13121979 .

Mladenović, Ivana O., Vuksanović, Marija M., Dimitrijević, Stevan P., Vasilić, Rastko, Radojević, Vesna J., Vasiljević-Radović, Dana G., Nikolić, Nebojša D., "Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles" in Metals, 13, no. 12 (2023):1979,
https://doi.org/10.3390/met13121979 . .

TY  - CONF
AU  - Erić, Aleksandar
AU  - Cvetinović, Dejan
AU  - Cvetković, Slobodan
AU  - Perendija, Jovana
AU  - Pijović-Radovanović, Milena
AU  - Janković, Bojan
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7405
AB  - The aim of the article is to show the effects of the main air plasma gasifier operating parameters, such as temperature and equivalence ratio on the gasification performance of sewage sludge from wastewater treatment plants. The parametric study was performed using a one-dimensional mathematical model to determine the equilibrium composition of the system. The model is based on the principle of the minimum of the Gibbs function and uses only the ultimate and proximate analysis data as input to the model. The output of the model gives the equilibrium composition of the gasses produced. The parametric analysis was performed in order to determine the optimal operating parameters of the plasma reactor in order to obtain syngas with the highest heat value while achieving the maximum efficiency of the process. The collected results can be useful in further analysis of the gasification processes in plasma reactor, such as exergy analysis and kinetics.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023, Programme, Full Papers Proceedings, 8th – 10th November 2023 Zlatibor, Serbia / Međunarodna konferencija Elektrane 2023, Program, Zbornik radova
T1  - Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach
SP  - 933
EP  - 949
UR  - https://hdl.handle.net/21.15107/rcub_cer_7405
ER  - 

@conference{
author = "Erić, Aleksandar and Cvetinović, Dejan and Cvetković, Slobodan and Perendija, Jovana and Pijović-Radovanović, Milena and Janković, Bojan",
year = "2023",
abstract = "The aim of the article is to show the effects of the main air plasma gasifier operating parameters, such as temperature and equivalence ratio on the gasification performance of sewage sludge from wastewater treatment plants. The parametric study was performed using a one-dimensional mathematical model to determine the equilibrium composition of the system. The model is based on the principle of the minimum of the Gibbs function and uses only the ultimate and proximate analysis data as input to the model. The output of the model gives the equilibrium composition of the gasses produced. The parametric analysis was performed in order to determine the optimal operating parameters of the plasma reactor in order to obtain syngas with the highest heat value while achieving the maximum efficiency of the process. The collected results can be useful in further analysis of the gasification processes in plasma reactor, such as exergy analysis and kinetics.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023, Programme, Full Papers Proceedings, 8th – 10th November 2023 Zlatibor, Serbia / Međunarodna konferencija Elektrane 2023, Program, Zbornik radova",
title = "Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach",
pages = "933-949",
url = "https://hdl.handle.net/21.15107/rcub_cer_7405"
}

Erić, A., Cvetinović, D., Cvetković, S., Perendija, J., Pijović-Radovanović, M.,& Janković, B.. (2023). Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach. in International Conference Power Plants 2023, Programme, Full Papers Proceedings, 8th – 10th November 2023 Zlatibor, Serbia / Međunarodna konferencija Elektrane 2023, Program, Zbornik radova
Belgrade : Society of Thermal Engineers of Serbia., 933-949.
https://hdl.handle.net/21.15107/rcub_cer_7405

Erić A, Cvetinović D, Cvetković S, Perendija J, Pijović-Radovanović M, Janković B. Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach. in International Conference Power Plants 2023, Programme, Full Papers Proceedings, 8th – 10th November 2023 Zlatibor, Serbia / Međunarodna konferencija Elektrane 2023, Program, Zbornik radova. 2023;:933-949.
https://hdl.handle.net/21.15107/rcub_cer_7405 .

Erić, Aleksandar, Cvetinović, Dejan, Cvetković, Slobodan, Perendija, Jovana, Pijović-Radovanović, Milena, Janković, Bojan, "Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach" in International Conference Power Plants 2023, Programme, Full Papers Proceedings, 8th – 10th November 2023 Zlatibor, Serbia / Međunarodna konferencija Elektrane 2023, Program, Zbornik radova (2023):933-949,
https://hdl.handle.net/21.15107/rcub_cer_7405 .

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Pjević, Dejan
AU  - Krstić, Jugoslav
AU  - Popović, Maja
AU  - Rajić, Vladimir
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5881
AB  - A set of samples of SrGd2O4 doped with Sm3+ and Dy3+with different concentrations was prepared via glycine-assisted combustion synthesis. All of the diffraction peaks are related to the pure orthorhombic lattice SrGd2O4, according to X-ray Powder Diffraction investigation. The Energy Dispersive X-ray Spectroscopy chemical characterization revealed that the structure included all desired elements. Field Emission Scanning Electron Microscopy was used to capture the morphology, which showed porous aggregated particles consisting of roughly 50 nm-sized spherical particles. The Mercury Intrusion Porosimetry was used to establish where voids originated, and the results showed that samples have a real permanent 3D pore structure. X-ray Photoelectron Spectroscopy verified the successful incorporation of Dy3+ and Sm3+ ions in the matrix. Down-conversion luminescence spectra were recorded and typical emission transitions were found for either Sm3+ (4G5/2→6H5/2, 4G5/2→6H7/2, 4G5/2→6H9/2) or Dy3+ (4F9/2→6H15/2 and 4F9/2→6H13/2) ions. Calculation of the energy band gap using UV-VIS Diffuse Reflectance Spectroscopy yielded values of 4.3 eV for both doped samples. Using UV-VIS Absorption Spectroscopy, the photocatalytic degradation process was observed. After 4 h of simulating Sun exposure, an analysis of the photocatalytic properties revealed that approximately 50% of the Rhodamine B had been mineralized.
PB  - Elsevier B.V.
T2  - Surfaces and Interfaces
T1  - Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions
VL  - 37
SP  - 102755
DO  - 10.1016/j.surfin.2023.102755
ER  - 

@article{
author = "Stamenković, Tijana and Pjević, Dejan and Krstić, Jugoslav and Popović, Maja and Rajić, Vladimir and Lojpur, Vesna",
year = "2023",
abstract = "A set of samples of SrGd2O4 doped with Sm3+ and Dy3+with different concentrations was prepared via glycine-assisted combustion synthesis. All of the diffraction peaks are related to the pure orthorhombic lattice SrGd2O4, according to X-ray Powder Diffraction investigation. The Energy Dispersive X-ray Spectroscopy chemical characterization revealed that the structure included all desired elements. Field Emission Scanning Electron Microscopy was used to capture the morphology, which showed porous aggregated particles consisting of roughly 50 nm-sized spherical particles. The Mercury Intrusion Porosimetry was used to establish where voids originated, and the results showed that samples have a real permanent 3D pore structure. X-ray Photoelectron Spectroscopy verified the successful incorporation of Dy3+ and Sm3+ ions in the matrix. Down-conversion luminescence spectra were recorded and typical emission transitions were found for either Sm3+ (4G5/2→6H5/2, 4G5/2→6H7/2, 4G5/2→6H9/2) or Dy3+ (4F9/2→6H15/2 and 4F9/2→6H13/2) ions. Calculation of the energy band gap using UV-VIS Diffuse Reflectance Spectroscopy yielded values of 4.3 eV for both doped samples. Using UV-VIS Absorption Spectroscopy, the photocatalytic degradation process was observed. After 4 h of simulating Sun exposure, an analysis of the photocatalytic properties revealed that approximately 50% of the Rhodamine B had been mineralized.",
publisher = "Elsevier B.V.",
journal = "Surfaces and Interfaces",
title = "Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions",
volume = "37",
pages = "102755",
doi = "10.1016/j.surfin.2023.102755"
}

Stamenković, T., Pjević, D., Krstić, J., Popović, M., Rajić, V.,& Lojpur, V.. (2023). Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions. in Surfaces and Interfaces
Elsevier B.V.., 37, 102755.
https://doi.org/10.1016/j.surfin.2023.102755

Stamenković T, Pjević D, Krstić J, Popović M, Rajić V, Lojpur V. Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions. in Surfaces and Interfaces. 2023;37:102755.
doi:10.1016/j.surfin.2023.102755 .

Stamenković, Tijana, Pjević, Dejan, Krstić, Jugoslav, Popović, Maja, Rajić, Vladimir, Lojpur, Vesna, "Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions" in Surfaces and Interfaces, 37 (2023):102755,
https://doi.org/10.1016/j.surfin.2023.102755 . .

TY  - JOUR
AU  - Pavlović, Ratko
AU  - Dojnov, Biljana
AU  - Šokarda Slavić, Marinela
AU  - Pavlović, Marija
AU  - Slomo, Katarina
AU  - Ristović, Marina
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5593
AB  - Finding a pollen substitute for honey bees that is nutritionally adequate and affordable is a scientific and practical challenge. We attempted a new rational approach and tried to exploit honey bees’ natural cannibalistic behavior. We tested processed insect larvae as a food source that is nutritionally similar to bee brood, and which can easily be produced on a large scale. In cage experiments, monitoring bee mortality, food consumption and changes in bee body parts’ weights showed that flour obtained by grinding dried yellow mealworm larvae has the potential to become an excellent component for pollen substitution. Bees from the cage group fed Tenebrio molitor patties (TG) demonstrated overall best results in comparison to sugar patties fed bee group (CG), yeast patties fed bee group (YG) and pollen patties fed bee group (PG). They did not lose weight as rapidly as the CG, did not defecate inside cages as the YG, nor show increased mortality as the PG. At the same time, TG consumed less food (mean 13.7 g/cage) than CG (16.8 g/cage), YG (20.4 g/cage) and PG (23.9 g/cage) within the period of 28 days. Bees’ gut increase in weight was lowest in the CG, followed by TG and PG and was the highest in the YG which resulted in diarrhea after 14 days. Bees from TG did not lag behind other bees in head, thorax and abdomen weight after 28 days. We demonstrated that processed yellow mealworm larvae (T. molitor) can be used as an ingredient for honey bee feed.
PB  - Informa UK Limited
T2  - Journal of Apicultural Research
T1  - In pursuit of the ultimate pollen substitute (insect larvae) for honey bee (Apis mellifera) feed
VL  - 62
IS  - 5
SP  - 1007
EP  - 1016
DO  - 10.1080/00218839.2022.2080950
ER  - 

@article{
author = "Pavlović, Ratko and Dojnov, Biljana and Šokarda Slavić, Marinela and Pavlović, Marija and Slomo, Katarina and Ristović, Marina and Vujčić, Zoran",
year = "2023",
abstract = "Finding a pollen substitute for honey bees that is nutritionally adequate and affordable is a scientific and practical challenge. We attempted a new rational approach and tried to exploit honey bees’ natural cannibalistic behavior. We tested processed insect larvae as a food source that is nutritionally similar to bee brood, and which can easily be produced on a large scale. In cage experiments, monitoring bee mortality, food consumption and changes in bee body parts’ weights showed that flour obtained by grinding dried yellow mealworm larvae has the potential to become an excellent component for pollen substitution. Bees from the cage group fed Tenebrio molitor patties (TG) demonstrated overall best results in comparison to sugar patties fed bee group (CG), yeast patties fed bee group (YG) and pollen patties fed bee group (PG). They did not lose weight as rapidly as the CG, did not defecate inside cages as the YG, nor show increased mortality as the PG. At the same time, TG consumed less food (mean 13.7 g/cage) than CG (16.8 g/cage), YG (20.4 g/cage) and PG (23.9 g/cage) within the period of 28 days. Bees’ gut increase in weight was lowest in the CG, followed by TG and PG and was the highest in the YG which resulted in diarrhea after 14 days. Bees from TG did not lag behind other bees in head, thorax and abdomen weight after 28 days. We demonstrated that processed yellow mealworm larvae (T. molitor) can be used as an ingredient for honey bee feed.",
publisher = "Informa UK Limited",
journal = "Journal of Apicultural Research",
title = "In pursuit of the ultimate pollen substitute (insect larvae) for honey bee (Apis mellifera) feed",
volume = "62",
number = "5",
pages = "1007-1016",
doi = "10.1080/00218839.2022.2080950"
}

Pavlović, R., Dojnov, B., Šokarda Slavić, M., Pavlović, M., Slomo, K., Ristović, M.,& Vujčić, Z.. (2023). In pursuit of the ultimate pollen substitute (insect larvae) for honey bee (Apis mellifera) feed. in Journal of Apicultural Research
Informa UK Limited., 62(5), 1007-1016.
https://doi.org/10.1080/00218839.2022.2080950

Pavlović R, Dojnov B, Šokarda Slavić M, Pavlović M, Slomo K, Ristović M, Vujčić Z. In pursuit of the ultimate pollen substitute (insect larvae) for honey bee (Apis mellifera) feed. in Journal of Apicultural Research. 2023;62(5):1007-1016.
doi:10.1080/00218839.2022.2080950 .

Pavlović, Ratko, Dojnov, Biljana, Šokarda Slavić, Marinela, Pavlović, Marija, Slomo, Katarina, Ristović, Marina, Vujčić, Zoran, "In pursuit of the ultimate pollen substitute (insect larvae) for honey bee (Apis mellifera) feed" in Journal of Apicultural Research, 62, no. 5 (2023):1007-1016,
https://doi.org/10.1080/00218839.2022.2080950 . .

TY  - CONF
AU  - Margetić, Aleksandra
AU  - Šokarda Slavić, Marinela
AU  - Ristović, Marina
AU  - Stojanović, Sanja
AU  - Pavlović, Marija
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6027
AB  - When textile dyes are released into the water, they can have a range of negative effects on the environment, for example, azo dyes can break down into carcinogenic compounds when exposed to sunlight. Remazol Brilliant Blue R (RBBR) and Reactive Black 5 (RB5) are reactive dyes. Unfortunately, the discharge of untreated effluents from these industries into nature can result in the contamination of water, which can have harmful effects on the environment.
Saccharomyces cerevisiae is widely used in different fields of biotechnology. In this work, the cell walls of used yeast were reused for the biosorption of textile dyes, and the possibility of their utilization in wastewater treatment was investigated. The response surface methodology approach was applied to determine the optimal levels of three input variables - pH, temperature, and time, and also to identify the relationship between the response functions and process variables. Five levels of three variables were used, pH range 2–13, temperature range 15–40°C and time 0.15–30 h. The decolorization processes were optimized using the Central Composite Design. A significant impact of pH and temperature
was found, while satisfactory results in decolorization (≥ 90%) were shown in a short time (up to 1 h). The maximum adsorption capacity (MAC) of the used Saccharomyces cerevisiae cell wall for removing RBBR and RB5 from wastewater was tested according to results obtained by CCD considering the economy of the process (pH 4, 25°C and 1 hour). Experimentally obtained MAC was 400 mg/g and 200 mg/g for RBBR and RB5, respectively.
PB  - European Federation of Biotechnology
C3  - Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online
T1  - Reusing biomass in textile dyes removing from wastewater
SP  - 62
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_cer_6027
ER  - 

@conference{
author = "Margetić, Aleksandra and Šokarda Slavić, Marinela and Ristović, Marina and Stojanović, Sanja and Pavlović, Marija and Vujčić, Zoran",
year = "2023",
abstract = "When textile dyes are released into the water, they can have a range of negative effects on the environment, for example, azo dyes can break down into carcinogenic compounds when exposed to sunlight. Remazol Brilliant Blue R (RBBR) and Reactive Black 5 (RB5) are reactive dyes. Unfortunately, the discharge of untreated effluents from these industries into nature can result in the contamination of water, which can have harmful effects on the environment.
Saccharomyces cerevisiae is widely used in different fields of biotechnology. In this work, the cell walls of used yeast were reused for the biosorption of textile dyes, and the possibility of their utilization in wastewater treatment was investigated. The response surface methodology approach was applied to determine the optimal levels of three input variables - pH, temperature, and time, and also to identify the relationship between the response functions and process variables. Five levels of three variables were used, pH range 2–13, temperature range 15–40°C and time 0.15–30 h. The decolorization processes were optimized using the Central Composite Design. A significant impact of pH and temperature
was found, while satisfactory results in decolorization (≥ 90%) were shown in a short time (up to 1 h). The maximum adsorption capacity (MAC) of the used Saccharomyces cerevisiae cell wall for removing RBBR and RB5 from wastewater was tested according to results obtained by CCD considering the economy of the process (pH 4, 25°C and 1 hour). Experimentally obtained MAC was 400 mg/g and 200 mg/g for RBBR and RB5, respectively.",
publisher = "European Federation of Biotechnology",
journal = "Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online",
title = "Reusing biomass in textile dyes removing from wastewater",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_cer_6027"
}

Margetić, A., Šokarda Slavić, M., Ristović, M., Stojanović, S., Pavlović, M.,& Vujčić, Z.. (2023). Reusing biomass in textile dyes removing from wastewater. in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online
European Federation of Biotechnology., 62-62.
https://hdl.handle.net/21.15107/rcub_cer_6027

Margetić A, Šokarda Slavić M, Ristović M, Stojanović S, Pavlović M, Vujčić Z. Reusing biomass in textile dyes removing from wastewater. in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online. 2023;:62-62.
https://hdl.handle.net/21.15107/rcub_cer_6027 .

Margetić, Aleksandra, Šokarda Slavić, Marinela, Ristović, Marina, Stojanović, Sanja, Pavlović, Marija, Vujčić, Zoran, "Reusing biomass in textile dyes removing from wastewater" in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online (2023):62-62,
https://hdl.handle.net/21.15107/rcub_cer_6027 .

TY  - CONF
AU  - Šokarda Slavić, Marinela
AU  - Margetić, Aleksandra
AU  - Ristović, Marina
AU  - Pavlović, Marija
AU  - Stojanović, Sanja
AU  - Drulović, Nenad
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6028
AB  - Fish processing generates a large amount of waste products; nearly 75 % of the total fish weight consists of scales, skins, heads, viscera, and bones. These waste by-products are often dumped in landfills or the ocean, contributing to environmental pollution. Solid fish waste has a high collagen content and can be utilized for the extraction of different products such as gelatine, which can be used in different food and pharmaceutical industries. Fish gelatine contains all biogenic amino acids and can be used as a dietary supplement, thus increasing the utilization of fish waste and reducing environmental pollution.
Recently, a strong worldwide focus has been directed towards the discovery of new microbial proteases for industrial applications. For that purpose, the Bacillus sp. strains from the laboratory bank were screened for the ability to secrete alkaline proteases. Bacterial strains that produced a larger clear zone on the gelatine agar plate were selected for further study. Selected bacterial strains were cultivated under submerged conditions for the purpose of producing proteases. The supernatant from each isolate was used as a crude enzyme extract for testing gelatine proteolytic activity and hydrolysis products. Bacillus sp. strains 12B, 16A, 17B and 24B showed a high degree of hydrolysis of the gelatine waste and the ability to form proteins of small molecular masses after one hour of hydrolysis. Of these, sp. 12B was the most potent, having twice the proteolytic activity determined by the TNBS method.
PB  - European Federation of Biotechnology
C3  - Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online
T1  - Screening of Bacillus sp. protease for hydrolysis of gelatine extracted from fish waste and potential applications for waste valorisation
SP  - 66
EP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_cer_6028
ER  - 

@conference{
author = "Šokarda Slavić, Marinela and Margetić, Aleksandra and Ristović, Marina and Pavlović, Marija and Stojanović, Sanja and Drulović, Nenad and Vujčić, Zoran",
year = "2023",
abstract = "Fish processing generates a large amount of waste products; nearly 75 % of the total fish weight consists of scales, skins, heads, viscera, and bones. These waste by-products are often dumped in landfills or the ocean, contributing to environmental pollution. Solid fish waste has a high collagen content and can be utilized for the extraction of different products such as gelatine, which can be used in different food and pharmaceutical industries. Fish gelatine contains all biogenic amino acids and can be used as a dietary supplement, thus increasing the utilization of fish waste and reducing environmental pollution.
Recently, a strong worldwide focus has been directed towards the discovery of new microbial proteases for industrial applications. For that purpose, the Bacillus sp. strains from the laboratory bank were screened for the ability to secrete alkaline proteases. Bacterial strains that produced a larger clear zone on the gelatine agar plate were selected for further study. Selected bacterial strains were cultivated under submerged conditions for the purpose of producing proteases. The supernatant from each isolate was used as a crude enzyme extract for testing gelatine proteolytic activity and hydrolysis products. Bacillus sp. strains 12B, 16A, 17B and 24B showed a high degree of hydrolysis of the gelatine waste and the ability to form proteins of small molecular masses after one hour of hydrolysis. Of these, sp. 12B was the most potent, having twice the proteolytic activity determined by the TNBS method.",
publisher = "European Federation of Biotechnology",
journal = "Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online",
title = "Screening of Bacillus sp. protease for hydrolysis of gelatine extracted from fish waste and potential applications for waste valorisation",
pages = "66-66",
url = "https://hdl.handle.net/21.15107/rcub_cer_6028"
}

Šokarda Slavić, M., Margetić, A., Ristović, M., Pavlović, M., Stojanović, S., Drulović, N.,& Vujčić, Z.. (2023). Screening of Bacillus sp. protease for hydrolysis of gelatine extracted from fish waste and potential applications for waste valorisation. in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online
European Federation of Biotechnology., 66-66.
https://hdl.handle.net/21.15107/rcub_cer_6028

Šokarda Slavić M, Margetić A, Ristović M, Pavlović M, Stojanović S, Drulović N, Vujčić Z. Screening of Bacillus sp. protease for hydrolysis of gelatine extracted from fish waste and potential applications for waste valorisation. in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online. 2023;:66-66.
https://hdl.handle.net/21.15107/rcub_cer_6028 .

Šokarda Slavić, Marinela, Margetić, Aleksandra, Ristović, Marina, Pavlović, Marija, Stojanović, Sanja, Drulović, Nenad, Vujčić, Zoran, "Screening of Bacillus sp. protease for hydrolysis of gelatine extracted from fish waste and potential applications for waste valorisation" in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online (2023):66-66,
https://hdl.handle.net/21.15107/rcub_cer_6028 .

TY  - CONF
AU  - Pavlović, Marija
AU  - Šokarda Slavić, Marinela
AU  - Ristović, Marina
AU  - Margetić, Aleksandra
AU  - Stojanović, Sanja
AU  - Momčilović, Miloš
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6241
AB  - Pectinases are a type of enzymes frequently used in the food industry to clarify, liquefy, and stabilize fruit juices. The main challenge in fruit juice production is the cloudiness of the juice, which is largely caused by the presence of pectic polysaccharides. Endo-pectinases are enzymes that hydrolyze the glycosidic bonds in pectic polymers. Commercial pectinolytic enzymes are typically produced by fungi, with Aspergillus spp. being the most commonly used.
The aim of this research was the production and characterization of a novel endo-pectinase from the Aspergillus tubingensis strain for use in liquefying and clarifying different types of fruit juice. To accomplish this, solid-state fermentation was conducted on agricultural waste, such as sugar beet pulp and wheat bran, to produce pectinolytic enzymes. The resulting crude extract was concentrated via ultrafiltration and used to isolate the endo-pectinase via ammonium sulfate and ethanol precipitation methods. Ion-exchange chromatography technique on DEAE Sephadex A-25 matrix was used for further purification of the endo-pectinase.
The purified enzyme was characterized by the determination of total pectinolytic activity, specific pectinolytic activity, and SDS-PAA gel electrophoresis. The activity of the endo-pectinase was confirmed by a diffusion test and zymography with Ruthenium Red visualization. The resulting enzyme was used to liquefy apricot, banana, apple, quince, strawberry, and orange pulp, with juice yields ranging from 71% to 83%, depending on the fruit used. The juices treated with endo-pectinase showed much higher clarification compared to untreated juices. Additionally, the treated juices demonstrated more pronounced antioxidant properties, as determined through the DPPH assay.
PB  - Serbian Chemical Society
C3  - Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia
T1  - Highly active endo-pectinases from Aspergillus tubingensis: A novel enzyme for fruit processing
SP  - 207
EP  - 207
UR  - https://hdl.handle.net/21.15107/rcub_cer_6241
ER  - 

@conference{
author = "Pavlović, Marija and Šokarda Slavić, Marinela and Ristović, Marina and Margetić, Aleksandra and Stojanović, Sanja and Momčilović, Miloš and Vujčić, Zoran",
year = "2023",
abstract = "Pectinases are a type of enzymes frequently used in the food industry to clarify, liquefy, and stabilize fruit juices. The main challenge in fruit juice production is the cloudiness of the juice, which is largely caused by the presence of pectic polysaccharides. Endo-pectinases are enzymes that hydrolyze the glycosidic bonds in pectic polymers. Commercial pectinolytic enzymes are typically produced by fungi, with Aspergillus spp. being the most commonly used.
The aim of this research was the production and characterization of a novel endo-pectinase from the Aspergillus tubingensis strain for use in liquefying and clarifying different types of fruit juice. To accomplish this, solid-state fermentation was conducted on agricultural waste, such as sugar beet pulp and wheat bran, to produce pectinolytic enzymes. The resulting crude extract was concentrated via ultrafiltration and used to isolate the endo-pectinase via ammonium sulfate and ethanol precipitation methods. Ion-exchange chromatography technique on DEAE Sephadex A-25 matrix was used for further purification of the endo-pectinase.
The purified enzyme was characterized by the determination of total pectinolytic activity, specific pectinolytic activity, and SDS-PAA gel electrophoresis. The activity of the endo-pectinase was confirmed by a diffusion test and zymography with Ruthenium Red visualization. The resulting enzyme was used to liquefy apricot, banana, apple, quince, strawberry, and orange pulp, with juice yields ranging from 71% to 83%, depending on the fruit used. The juices treated with endo-pectinase showed much higher clarification compared to untreated juices. Additionally, the treated juices demonstrated more pronounced antioxidant properties, as determined through the DPPH assay.",
publisher = "Serbian Chemical Society",
journal = "Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia",
title = "Highly active endo-pectinases from Aspergillus tubingensis: A novel enzyme for fruit processing",
pages = "207-207",
url = "https://hdl.handle.net/21.15107/rcub_cer_6241"
}

Pavlović, M., Šokarda Slavić, M., Ristović, M., Margetić, A., Stojanović, S., Momčilović, M.,& Vujčić, Z.. (2023). Highly active endo-pectinases from Aspergillus tubingensis: A novel enzyme for fruit processing. in Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia
Serbian Chemical Society., 207-207.
https://hdl.handle.net/21.15107/rcub_cer_6241

Pavlović M, Šokarda Slavić M, Ristović M, Margetić A, Stojanović S, Momčilović M, Vujčić Z. Highly active endo-pectinases from Aspergillus tubingensis: A novel enzyme for fruit processing. in Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia. 2023;:207-207.
https://hdl.handle.net/21.15107/rcub_cer_6241 .

Pavlović, Marija, Šokarda Slavić, Marinela, Ristović, Marina, Margetić, Aleksandra, Stojanović, Sanja, Momčilović, Miloš, Vujčić, Zoran, "Highly active endo-pectinases from Aspergillus tubingensis: A novel enzyme for fruit processing" in Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia (2023):207-207,
https://hdl.handle.net/21.15107/rcub_cer_6241 .