Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200019 (University of Belgrade, Institute for the Application of Nuclear Energy - INEP)

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Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200019 (University of Belgrade, Institute for the Application of Nuclear Energy - INEP) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200019 (Univerzitet u Beogradu, Institut za primenu nuklearne energije - INEP) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200019 (Универзитет у Београду, Институт за примену нуклеарне енергије - ИНЕП) (sr)
Authors

Publications

Investigation of the Potential of Selected Food-Derived Antioxidants to Bind and Stabilise the Bioactive Blue Protein C-Phycocyanin from Cyanobacteria Spirulina

Gligorijević, Nikola; Jovanović, Zorana; Cvijetić, Ilija; Šunderić, Miloš; Veličković, Luka; Katrlík, Jaroslav; Holazová, Alena; Nikolić, Milan; Minić, Simeon

(MDPI, 2024)

TY  - JOUR
AU  - Gligorijević, Nikola
AU  - Jovanović, Zorana
AU  - Cvijetić, Ilija
AU  - Šunderić, Miloš
AU  - Veličković, Luka
AU  - Katrlík, Jaroslav
AU  - Holazová, Alena
AU  - Nikolić, Milan
AU  - Minić, Simeon
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7298
AB  - Blue C-phycocyanin (C-PC), the major Spirulina protein with innumerable
health-promoting benefits, is an attractive colourant and food supplement. A crucial obstacle to its
more extensive use is its relatively low stability. This study aimed to screen various food-derived
ligands for their ability to bind and stabilise C-PC, utilising spectroscopic techniques and molecular
docking. Among twelve examined ligands, the protein fluorescence quenching revealed that
only quercetin, coenzyme Q10 and resveratrol had a moderate affinity to C-PC (Ka of 2.2 to 3.7 × 105
M–1). Docking revealed these three ligands bind more strongly to the C-PC hexamer than the trimer,
with the binding sites located at the interface of two (αβ)3 trimers. UV/VIS absorption spectroscopy
demonstrated the changes in the C-PC absorption spectra in a complex with quercetin
and resveratrol compared to the spectra of free protein and ligands. Selected ligands did not affect
the secondary structure content, but they induced changes in the tertiary protein structure in the
CD study. A fluorescence-based thermal stability assay demonstrated quercetin and coenzyme Q10
increased the C-PC melting point by nearly 5 °C. Our study identified food-derived ligands that
interact with C-PC and improve its thermal stability, indicating their potential as stabilising agents
for C-PC in the food industry.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - Investigation of the Potential of Selected Food-Derived Antioxidants to Bind and Stabilise the Bioactive Blue Protein C-Phycocyanin from Cyanobacteria Spirulina
VL  - 25
IS  - 1
SP  - 229
DO  - 10.3390/ijms25010229
ER  - 
@article{
author = "Gligorijević, Nikola and Jovanović, Zorana and Cvijetić, Ilija and Šunderić, Miloš and Veličković, Luka and Katrlík, Jaroslav and Holazová, Alena and Nikolić, Milan and Minić, Simeon",
year = "2024",
abstract = "Blue C-phycocyanin (C-PC), the major Spirulina protein with innumerable
health-promoting benefits, is an attractive colourant and food supplement. A crucial obstacle to its
more extensive use is its relatively low stability. This study aimed to screen various food-derived
ligands for their ability to bind and stabilise C-PC, utilising spectroscopic techniques and molecular
docking. Among twelve examined ligands, the protein fluorescence quenching revealed that
only quercetin, coenzyme Q10 and resveratrol had a moderate affinity to C-PC (Ka of 2.2 to 3.7 × 105
M–1). Docking revealed these three ligands bind more strongly to the C-PC hexamer than the trimer,
with the binding sites located at the interface of two (αβ)3 trimers. UV/VIS absorption spectroscopy
demonstrated the changes in the C-PC absorption spectra in a complex with quercetin
and resveratrol compared to the spectra of free protein and ligands. Selected ligands did not affect
the secondary structure content, but they induced changes in the tertiary protein structure in the
CD study. A fluorescence-based thermal stability assay demonstrated quercetin and coenzyme Q10
increased the C-PC melting point by nearly 5 °C. Our study identified food-derived ligands that
interact with C-PC and improve its thermal stability, indicating their potential as stabilising agents
for C-PC in the food industry.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "Investigation of the Potential of Selected Food-Derived Antioxidants to Bind and Stabilise the Bioactive Blue Protein C-Phycocyanin from Cyanobacteria Spirulina",
volume = "25",
number = "1",
pages = "229",
doi = "10.3390/ijms25010229"
}
Gligorijević, N., Jovanović, Z., Cvijetić, I., Šunderić, M., Veličković, L., Katrlík, J., Holazová, A., Nikolić, M.,& Minić, S.. (2024). Investigation of the Potential of Selected Food-Derived Antioxidants to Bind and Stabilise the Bioactive Blue Protein C-Phycocyanin from Cyanobacteria Spirulina. in International Journal of Molecular Sciences
MDPI., 25(1), 229.
https://doi.org/10.3390/ijms25010229
Gligorijević N, Jovanović Z, Cvijetić I, Šunderić M, Veličković L, Katrlík J, Holazová A, Nikolić M, Minić S. Investigation of the Potential of Selected Food-Derived Antioxidants to Bind and Stabilise the Bioactive Blue Protein C-Phycocyanin from Cyanobacteria Spirulina. in International Journal of Molecular Sciences. 2024;25(1):229.
doi:10.3390/ijms25010229 .
Gligorijević, Nikola, Jovanović, Zorana, Cvijetić, Ilija, Šunderić, Miloš, Veličković, Luka, Katrlík, Jaroslav, Holazová, Alena, Nikolić, Milan, Minić, Simeon, "Investigation of the Potential of Selected Food-Derived Antioxidants to Bind and Stabilise the Bioactive Blue Protein C-Phycocyanin from Cyanobacteria Spirulina" in International Journal of Molecular Sciences, 25, no. 1 (2024):229,
https://doi.org/10.3390/ijms25010229 . .
1

Phycocyanobilin is a new binding partner of human alpha-2-macroglobulin that protects the protein against oxidative stress

Šunderić, Miloš; Gligorijević, Nikola; Milčić, Miloš; Minić, Simeon; Nedić, Olgica; Nikolić, Milan

(Taylor & Francis Group, 2023)

TY  - JOUR
AU  - Šunderić, Miloš
AU  - Gligorijević, Nikola
AU  - Milčić, Miloš
AU  - Minić, Simeon
AU  - Nedić, Olgica
AU  - Nikolić, Milan
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6471
AB  - Under simulated physiological conditions, this study investigates the interaction between nutraceutical phycocyanobilin (PCB) and the universal anti-protease protein human alpha-2-macroglobulin (a2M). Extensive molecular docking analyses on multiple a2M conformations, spectroscopic techniques, and a2M activity assays were utilized to examine the complex formation. The results revealed that for every protein conformation, two high energy binding sites exist: the first, conformationally independent, at the interface region between two monomer chains and the second, conformationally dependent, in the pocket composed of amino acids from four distinct domains (TED, RBD, CUB, and MG2) of the single protein chain. Spectrofluorimetric measurements indicated a moderate affinity between a2M and PCB with a moderately high binding constant of 6.3 x 10^5 M^-1 at 25 °C. The binding of PCB to a2M resulted in minor changes in the secondary structure content of a2M. Furthermore, PCB protected a2M from oxidation and preserved its anti-protease activity in the oxidative environment. These findings suggest that PCB binding could indirectly impact the body’s response to oxidative stress by influencing a2M’s role in controlling enzyme activity during the inflammatory process.
PB  - Taylor & Francis Group
T2  - Journal of Biomolecular Structure and Dynamics
T1  - Phycocyanobilin is a new binding partner of human alpha-2-macroglobulin that protects the protein against oxidative stress
DO  - 10.1080/07391102.2023.2248273
ER  - 
@article{
author = "Šunderić, Miloš and Gligorijević, Nikola and Milčić, Miloš and Minić, Simeon and Nedić, Olgica and Nikolić, Milan",
year = "2023",
abstract = "Under simulated physiological conditions, this study investigates the interaction between nutraceutical phycocyanobilin (PCB) and the universal anti-protease protein human alpha-2-macroglobulin (a2M). Extensive molecular docking analyses on multiple a2M conformations, spectroscopic techniques, and a2M activity assays were utilized to examine the complex formation. The results revealed that for every protein conformation, two high energy binding sites exist: the first, conformationally independent, at the interface region between two monomer chains and the second, conformationally dependent, in the pocket composed of amino acids from four distinct domains (TED, RBD, CUB, and MG2) of the single protein chain. Spectrofluorimetric measurements indicated a moderate affinity between a2M and PCB with a moderately high binding constant of 6.3 x 10^5 M^-1 at 25 °C. The binding of PCB to a2M resulted in minor changes in the secondary structure content of a2M. Furthermore, PCB protected a2M from oxidation and preserved its anti-protease activity in the oxidative environment. These findings suggest that PCB binding could indirectly impact the body’s response to oxidative stress by influencing a2M’s role in controlling enzyme activity during the inflammatory process.",
publisher = "Taylor & Francis Group",
journal = "Journal of Biomolecular Structure and Dynamics",
title = "Phycocyanobilin is a new binding partner of human alpha-2-macroglobulin that protects the protein against oxidative stress",
doi = "10.1080/07391102.2023.2248273"
}
Šunderić, M., Gligorijević, N., Milčić, M., Minić, S., Nedić, O.,& Nikolić, M.. (2023). Phycocyanobilin is a new binding partner of human alpha-2-macroglobulin that protects the protein against oxidative stress. in Journal of Biomolecular Structure and Dynamics
Taylor & Francis Group..
https://doi.org/10.1080/07391102.2023.2248273
Šunderić M, Gligorijević N, Milčić M, Minić S, Nedić O, Nikolić M. Phycocyanobilin is a new binding partner of human alpha-2-macroglobulin that protects the protein against oxidative stress. in Journal of Biomolecular Structure and Dynamics. 2023;.
doi:10.1080/07391102.2023.2248273 .
Šunderić, Miloš, Gligorijević, Nikola, Milčić, Miloš, Minić, Simeon, Nedić, Olgica, Nikolić, Milan, "Phycocyanobilin is a new binding partner of human alpha-2-macroglobulin that protects the protein against oxidative stress" in Journal of Biomolecular Structure and Dynamics (2023),
https://doi.org/10.1080/07391102.2023.2248273 . .

Simple two-step semi-preparative isolation and purification of transferrin from human serum

Četić, Danilo; Miljuš, Goran; Dobrijević, Zorana; Gligorijević, Nikola; Vilotić, Aleksandra; Nedić, Olgica; Penezić, Ana

(Serbian Biochemical Society, 2023)

TY  - CONF
AU  - Četić, Danilo
AU  - Miljuš, Goran
AU  - Dobrijević, Zorana
AU  - Gligorijević, Nikola
AU  - Vilotić, Aleksandra
AU  - Nedić, Olgica
AU  - Penezić, Ana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6663
AB  - Human transferrin (Tf) is a bilobal 76 kDa iron-binding glycoprotein present in human
serum. Each lobe has the ability to bind one ferric ion (Fe3+) and a single synergistic
bicarbonate anion. The main role of Tf is to transport Fe3+ ions through the circulation to
cells, via interaction with transferrin receptor (TFR) on the cell surface. Previously
described methods for Tf isolation and purification are either very time-consuming or
provide Tf of lower final purity. Here we describe a fast and simple FPLC method for the
isolation and purification of Tf from human serum. Serum samples were prepared by
precipitation, while protein purification was performed on FPLC system, using an anionexchange
column. Several different buffers at the same pH were tested. Tf purified by this
method was analyzed by Western blot, followed by immunodetection, as well as with
silver staining after SDS PAGE. Its functionality was tested with respect to iron-binding
capacity (ferozzine method) and its ability to interact with TFR by immunofluorescent
staining. The conformation of purified Tf was analyzed by recording intrinsic fluorescent
emmision spectra originating from Trp residues. The method itself is highly reproducible
(intra- and interday), easy to perform (only two steps) and fast (under an hour), yielding
98% to 99% pure Tf with all buffers. Purified Tf was shown to have retained its ironbinding
capacity, as well as the ability to interact with TFR. Purified Tf also retained its
native three-dimensional structure. Described method for the isolation and purification of
Tf is fast, simple and highly reproducible, yielding a functional Tf of high purity in its
native state while offering the flexibility of using different buffer systems. All of these
features make this protocol a method of choice for the isolation and purification of Tf on a
semi-preparative scale.
PB  - Serbian Biochemical Society
C3  - Serbian Biochemical Society Twelfth Conference, International scientific meeting, “Biochemistry in Biotechnology,” September 21-23, 2023, Belgrade, Serbia
T1  - Simple two-step semi-preparative isolation and purification of transferrin from human serum
SP  - 66
EP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_cer_6663
ER  - 
@conference{
author = "Četić, Danilo and Miljuš, Goran and Dobrijević, Zorana and Gligorijević, Nikola and Vilotić, Aleksandra and Nedić, Olgica and Penezić, Ana",
year = "2023",
abstract = "Human transferrin (Tf) is a bilobal 76 kDa iron-binding glycoprotein present in human
serum. Each lobe has the ability to bind one ferric ion (Fe3+) and a single synergistic
bicarbonate anion. The main role of Tf is to transport Fe3+ ions through the circulation to
cells, via interaction with transferrin receptor (TFR) on the cell surface. Previously
described methods for Tf isolation and purification are either very time-consuming or
provide Tf of lower final purity. Here we describe a fast and simple FPLC method for the
isolation and purification of Tf from human serum. Serum samples were prepared by
precipitation, while protein purification was performed on FPLC system, using an anionexchange
column. Several different buffers at the same pH were tested. Tf purified by this
method was analyzed by Western blot, followed by immunodetection, as well as with
silver staining after SDS PAGE. Its functionality was tested with respect to iron-binding
capacity (ferozzine method) and its ability to interact with TFR by immunofluorescent
staining. The conformation of purified Tf was analyzed by recording intrinsic fluorescent
emmision spectra originating from Trp residues. The method itself is highly reproducible
(intra- and interday), easy to perform (only two steps) and fast (under an hour), yielding
98% to 99% pure Tf with all buffers. Purified Tf was shown to have retained its ironbinding
capacity, as well as the ability to interact with TFR. Purified Tf also retained its
native three-dimensional structure. Described method for the isolation and purification of
Tf is fast, simple and highly reproducible, yielding a functional Tf of high purity in its
native state while offering the flexibility of using different buffer systems. All of these
features make this protocol a method of choice for the isolation and purification of Tf on a
semi-preparative scale.",
publisher = "Serbian Biochemical Society",
journal = "Serbian Biochemical Society Twelfth Conference, International scientific meeting, “Biochemistry in Biotechnology,” September 21-23, 2023, Belgrade, Serbia",
title = "Simple two-step semi-preparative isolation and purification of transferrin from human serum",
pages = "66-66",
url = "https://hdl.handle.net/21.15107/rcub_cer_6663"
}
Četić, D., Miljuš, G., Dobrijević, Z., Gligorijević, N., Vilotić, A., Nedić, O.,& Penezić, A.. (2023). Simple two-step semi-preparative isolation and purification of transferrin from human serum. in Serbian Biochemical Society Twelfth Conference, International scientific meeting, “Biochemistry in Biotechnology,” September 21-23, 2023, Belgrade, Serbia
Serbian Biochemical Society., 66-66.
https://hdl.handle.net/21.15107/rcub_cer_6663
Četić D, Miljuš G, Dobrijević Z, Gligorijević N, Vilotić A, Nedić O, Penezić A. Simple two-step semi-preparative isolation and purification of transferrin from human serum. in Serbian Biochemical Society Twelfth Conference, International scientific meeting, “Biochemistry in Biotechnology,” September 21-23, 2023, Belgrade, Serbia. 2023;:66-66.
https://hdl.handle.net/21.15107/rcub_cer_6663 .
Četić, Danilo, Miljuš, Goran, Dobrijević, Zorana, Gligorijević, Nikola, Vilotić, Aleksandra, Nedić, Olgica, Penezić, Ana, "Simple two-step semi-preparative isolation and purification of transferrin from human serum" in Serbian Biochemical Society Twelfth Conference, International scientific meeting, “Biochemistry in Biotechnology,” September 21-23, 2023, Belgrade, Serbia (2023):66-66,
https://hdl.handle.net/21.15107/rcub_cer_6663 .

Microwawe-assisted extraction of antioxidant compounds from Vaccinium Myrtillus leaves

Elferjane, Muna; Batinić, Petar; Čutović, Natalija; Milošević, Milena; Ćirić, Vojislav; Marinković, Aleksandar; Jovanović, Aleksandra

(Institute for Medicinal Plant Research "Dr. Josif Pančić", 2023)

TY  - JOUR
AU  - Elferjane, Muna
AU  - Batinić, Petar
AU  - Čutović, Natalija
AU  - Milošević, Milena
AU  - Ćirić, Vojislav
AU  - Marinković, Aleksandar
AU  - Jovanović, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7411
AB  - Vaccinium myrtillus L. (bilberry, Ericaceae), a perennial, wild, and small deciduous shrub that grows in the mountains and forests of Europe. The leaf extracts are widely used in traditional medicine due to their astringent, antiseptic, antioxidant, anti-inflammatory, hypolipidemic, and hypoglycemic activities. Microwave-assisted extraction provides various benefits, including reducing solvent consumption and extraction time and increasing extraction yield. In the present study, bilberry extracts were prepared using dried leaves, pure ethanol, or an ethanol-water mixture, and different temperatures in a microwave reactor (60, 100, and 160 ◦C). The extracts were examined in terms of total polyphenol content (TPC) and antioxidant activity. The TPC of the 96% ethanol extracts rose with the increase of the extraction temperature; the extract obtained at 60 ◦C (37.2 ± 0.5 mg gallic acid equivalents (GAE)/g of plant material)<the extract at 100 ◦C (46.6 ± 0.3 GAE/g)<the extract at 160 ◦C (55.1 ± 0.5 mg/g). The TPC of the 50% ethanol extract prepared at 60 ◦C was significantly lower (54.9 ± 1.0 mg GAE/g) in comparison to the extracts obtained at 100 and 160 ◦C (58.3 ± 1.0 and 58.0 ± 1.5 mg GAE/g, respectively). ABTS antioxidant capacity was higher in the 50% ethanol extracts compared to 96% ethanol parallels, while in the DPPH assay, there was no statistically significant difference between the 50 and 96% ethanol extracts. Due to higher TPC and anti-ABTS activity and reduced consumption of organic solvent, a 50% ethanol extract of V. myrtillus was favored, while the optimal temperature was 60 ◦C for the extract with the highest antioxidant capacity and 100 ◦C for the extract with the highest amount of polyphenols.
PB  - Institute for Medicinal Plant Research "Dr. Josif Pančić"
T2  - Lekovite sirovine
T1  - Microwawe-assisted extraction of antioxidant compounds from Vaccinium Myrtillus leaves
VL  - 43
IS  - 1
SP  - 1
EP  - 4
DO  - 10.61652/leksir2343e135E
ER  - 
@article{
author = "Elferjane, Muna and Batinić, Petar and Čutović, Natalija and Milošević, Milena and Ćirić, Vojislav and Marinković, Aleksandar and Jovanović, Aleksandra",
year = "2023",
abstract = "Vaccinium myrtillus L. (bilberry, Ericaceae), a perennial, wild, and small deciduous shrub that grows in the mountains and forests of Europe. The leaf extracts are widely used in traditional medicine due to their astringent, antiseptic, antioxidant, anti-inflammatory, hypolipidemic, and hypoglycemic activities. Microwave-assisted extraction provides various benefits, including reducing solvent consumption and extraction time and increasing extraction yield. In the present study, bilberry extracts were prepared using dried leaves, pure ethanol, or an ethanol-water mixture, and different temperatures in a microwave reactor (60, 100, and 160 ◦C). The extracts were examined in terms of total polyphenol content (TPC) and antioxidant activity. The TPC of the 96% ethanol extracts rose with the increase of the extraction temperature; the extract obtained at 60 ◦C (37.2 ± 0.5 mg gallic acid equivalents (GAE)/g of plant material)<the extract at 100 ◦C (46.6 ± 0.3 GAE/g)<the extract at 160 ◦C (55.1 ± 0.5 mg/g). The TPC of the 50% ethanol extract prepared at 60 ◦C was significantly lower (54.9 ± 1.0 mg GAE/g) in comparison to the extracts obtained at 100 and 160 ◦C (58.3 ± 1.0 and 58.0 ± 1.5 mg GAE/g, respectively). ABTS antioxidant capacity was higher in the 50% ethanol extracts compared to 96% ethanol parallels, while in the DPPH assay, there was no statistically significant difference between the 50 and 96% ethanol extracts. Due to higher TPC and anti-ABTS activity and reduced consumption of organic solvent, a 50% ethanol extract of V. myrtillus was favored, while the optimal temperature was 60 ◦C for the extract with the highest antioxidant capacity and 100 ◦C for the extract with the highest amount of polyphenols.",
publisher = "Institute for Medicinal Plant Research "Dr. Josif Pančić"",
journal = "Lekovite sirovine",
title = "Microwawe-assisted extraction of antioxidant compounds from Vaccinium Myrtillus leaves",
volume = "43",
number = "1",
pages = "1-4",
doi = "10.61652/leksir2343e135E"
}
Elferjane, M., Batinić, P., Čutović, N., Milošević, M., Ćirić, V., Marinković, A.,& Jovanović, A.. (2023). Microwawe-assisted extraction of antioxidant compounds from Vaccinium Myrtillus leaves. in Lekovite sirovine
Institute for Medicinal Plant Research "Dr. Josif Pančić"., 43(1), 1-4.
https://doi.org/10.61652/leksir2343e135E
Elferjane M, Batinić P, Čutović N, Milošević M, Ćirić V, Marinković A, Jovanović A. Microwawe-assisted extraction of antioxidant compounds from Vaccinium Myrtillus leaves. in Lekovite sirovine. 2023;43(1):1-4.
doi:10.61652/leksir2343e135E .
Elferjane, Muna, Batinić, Petar, Čutović, Natalija, Milošević, Milena, Ćirić, Vojislav, Marinković, Aleksandar, Jovanović, Aleksandra, "Microwawe-assisted extraction of antioxidant compounds from Vaccinium Myrtillus leaves" in Lekovite sirovine, 43, no. 1 (2023):1-4,
https://doi.org/10.61652/leksir2343e135E . .

Vaccinium myrtillus leaf waste extracts with natural deep eutectic solvent

Jovanović, Aleksandra A.; Rajab Elferjane, Muna; Milošević, Milena; Gnjatović, Marija; Marinković, Aleksandar

(Bor : University of Belgrade - Technical Faculty in Bor, 2023)

TY  - CONF
AU  - Jovanović, Aleksandra A.
AU  - Rajab Elferjane, Muna
AU  - Milošević, Milena
AU  - Gnjatović, Marija
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7339
AB  - Vaccinium myrtillus leaf waste extracts were prepared using lactic acid+amonium acetate and maceration, heat- and ultrasound-assisted extractions (HAE and UAE, respectively). The obtained extracts were characterized via analysis of total polyphenol content (TPC), pH, zeta potential, conductivity, density, surface tension, viscosity, and antioxidant potential. The TPC was the highest in the extract prepared in HAE (53.0±0.9 mg GAE/g), whereas the extracts from maceration and UAE possessed significantly lower TPC (50.4±0.7 and 49.5±0.4 mg GAE/g). The ABTS radical scavenging potential was the highest in the extract prepared in HAE (38.4±1.1 µmol TE/g), followed by the extract obtained using UAE (33.7±1.5 µmol TE/g) and maceration (30.2±1.7 µmol TE/g). The DPPH antioxidant capacity followed the same trend: HAE>UAE>maceration. The zeta potential was low in all extracts (2.66±0.48 mV for macerate, 2.57±0.20 mV for HAE, and 3.17±0.13 mV for UAE), while the conductivity was in the range of 1.87±0.13 and 1.84±0.11 mS/cm (maceration and HAE) to 2.10±0.11 mS/cm (UAE). The density varied from 1.105±0.009 g/mL for macerate to 1.122±0.006 and 1.117±0.001 g/mL for HAE and UAE extracts. There were no statistically significant differences in the surface tension and viscosity (~23.5 mN/m and ~5.5 mPa∙s). The highest TPC and antioxidant potential were measured in the extract obtained using HAE, whereas the extract prepared by ultrasound waves possessed the highest zeta potential and conductivity. Therefore, the extraction technique should be chosen depending on the future application of V. myrtillus extract.
PB  - Bor : University of Belgrade - Technical Faculty in Bor
C3  - Proceedings - 30th International Conference Ecological Truth & Environmental Research - EcoTER'23, 20-23 June 2023, Serbia
T1  - Vaccinium myrtillus leaf waste extracts with natural deep eutectic solvent
SP  - 444
EP  - 449
UR  - https://hdl.handle.net/21.15107/rcub_cer_7339
ER  - 
@conference{
author = "Jovanović, Aleksandra A. and Rajab Elferjane, Muna and Milošević, Milena and Gnjatović, Marija and Marinković, Aleksandar",
year = "2023",
abstract = "Vaccinium myrtillus leaf waste extracts were prepared using lactic acid+amonium acetate and maceration, heat- and ultrasound-assisted extractions (HAE and UAE, respectively). The obtained extracts were characterized via analysis of total polyphenol content (TPC), pH, zeta potential, conductivity, density, surface tension, viscosity, and antioxidant potential. The TPC was the highest in the extract prepared in HAE (53.0±0.9 mg GAE/g), whereas the extracts from maceration and UAE possessed significantly lower TPC (50.4±0.7 and 49.5±0.4 mg GAE/g). The ABTS radical scavenging potential was the highest in the extract prepared in HAE (38.4±1.1 µmol TE/g), followed by the extract obtained using UAE (33.7±1.5 µmol TE/g) and maceration (30.2±1.7 µmol TE/g). The DPPH antioxidant capacity followed the same trend: HAE>UAE>maceration. The zeta potential was low in all extracts (2.66±0.48 mV for macerate, 2.57±0.20 mV for HAE, and 3.17±0.13 mV for UAE), while the conductivity was in the range of 1.87±0.13 and 1.84±0.11 mS/cm (maceration and HAE) to 2.10±0.11 mS/cm (UAE). The density varied from 1.105±0.009 g/mL for macerate to 1.122±0.006 and 1.117±0.001 g/mL for HAE and UAE extracts. There were no statistically significant differences in the surface tension and viscosity (~23.5 mN/m and ~5.5 mPa∙s). The highest TPC and antioxidant potential were measured in the extract obtained using HAE, whereas the extract prepared by ultrasound waves possessed the highest zeta potential and conductivity. Therefore, the extraction technique should be chosen depending on the future application of V. myrtillus extract.",
publisher = "Bor : University of Belgrade - Technical Faculty in Bor",
journal = "Proceedings - 30th International Conference Ecological Truth & Environmental Research - EcoTER'23, 20-23 June 2023, Serbia",
title = "Vaccinium myrtillus leaf waste extracts with natural deep eutectic solvent",
pages = "444-449",
url = "https://hdl.handle.net/21.15107/rcub_cer_7339"
}
Jovanović, A. A., Rajab Elferjane, M., Milošević, M., Gnjatović, M.,& Marinković, A.. (2023). Vaccinium myrtillus leaf waste extracts with natural deep eutectic solvent. in Proceedings - 30th International Conference Ecological Truth & Environmental Research - EcoTER'23, 20-23 June 2023, Serbia
Bor : University of Belgrade - Technical Faculty in Bor., 444-449.
https://hdl.handle.net/21.15107/rcub_cer_7339
Jovanović AA, Rajab Elferjane M, Milošević M, Gnjatović M, Marinković A. Vaccinium myrtillus leaf waste extracts with natural deep eutectic solvent. in Proceedings - 30th International Conference Ecological Truth & Environmental Research - EcoTER'23, 20-23 June 2023, Serbia. 2023;:444-449.
https://hdl.handle.net/21.15107/rcub_cer_7339 .
Jovanović, Aleksandra A., Rajab Elferjane, Muna, Milošević, Milena, Gnjatović, Marija, Marinković, Aleksandar, "Vaccinium myrtillus leaf waste extracts with natural deep eutectic solvent" in Proceedings - 30th International Conference Ecological Truth & Environmental Research - EcoTER'23, 20-23 June 2023, Serbia (2023):444-449,
https://hdl.handle.net/21.15107/rcub_cer_7339 .

Comparison of maceration and ultrasound-assisted extraction of antioxidant compounds from Vaccinium myrtillus L.

Batinić, Petar; Jovanović, Aleksandra A.; Rajab Elferjane, Muna; Čutović, Natalija; Milošević, Milena; Marinković, Aleksandar; Bugarski, Branko

(Zvornik : University of East Sarajevo, Faculty of Technology, 2023)

TY  - CONF
AU  - Batinić, Petar
AU  - Jovanović, Aleksandra A.
AU  - Rajab Elferjane, Muna
AU  - Čutović, Natalija
AU  - Milošević, Milena
AU  - Marinković, Aleksandar
AU  - Bugarski, Branko
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7332
AB  - Vaccinium myrtillus L.(Ericaceae), a perennial, wild, and small deciduous shrub that grows in the mountains and forests of Europe, contains anthocyanins, phenolic acids, flavonoids, fatty acids, stilbenes, iridoid glycosides, dietary fibers, vitamins, and minerals. The leaves' extracts are widely used in traditional medicine due to their astringent, antiseptic, antioxidant, anti-inflammatory, skin-rejuvenating, lipid-lowering, hypolipidemic, and hypoglycemic activities. The novel extraction techniques, including ultrasound-assisted extraction, provide various benefits, such as reducing solvent consumption and extraction time and increasing extraction yield, and quality. Hence, in the present study, V. myrtillus extracts were prepared using dried leaves (0.66 g), 50% ethanol as the extraction solvent (20 mL), and maceration (60 min) or ultrasound-assisted extraction (ultrasound probe, amplitude of 60% for 5 min). The obtained extracts were examined in terms of total polyphenol content (TPC) and antioxidant activity (ABTS, DPPH, FRAP, and CUPRAC assays). The TPC of the extract prepared using maceration was 55.2±0.7 mg gallic acid equivalents (GAE)/g of plant material, while the TPC of the extract prepared using an ultrasound probe was 55.6±1.0 mg GAE/g. The DPPH radical scavenging activities of the extracts correlated with the TPC and amounted to 1.81±0.05 mg/mL for macerate and 1.79±0.02 mg/mL for the extract obtained using an ultrasound probe, whereas ABTS antioxidant capacity did not correlate with the polyphenol concentration, 31.4±0.9 µmol Trolox equivalents (TE)/g for the macerate and 43.4±1.1 µmol TE/g for the extract from the ultrasound-assisted extraction. According to the results of FRAP and CUPRAC assays, the antioxidant potential was similar for both extracts (15.3±0.2 and 15.5±0.2 µmol Fe2+/g and 45.7±0.5 and 46.0±0.7 µmol TE/g, respectively). Due to higher ABTS radical scavenging potential and significantly shorter extraction time, V. myrtillus extract prepared using an ultrasound probe was favored. The present research was an initial step in the preparation of V. myrtillus extracts which can be potentially implemented in food, pharmaceutical, and cosmetic formulations.
PB  - Zvornik : University of East Sarajevo, Faculty of Technology
C3  - Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina
T1  - Comparison of maceration and ultrasound-assisted extraction of antioxidant compounds from Vaccinium myrtillus L.
SP  - 172
EP  - 178
UR  - https://hdl.handle.net/21.15107/rcub_cer_7332
ER  - 
@conference{
author = "Batinić, Petar and Jovanović, Aleksandra A. and Rajab Elferjane, Muna and Čutović, Natalija and Milošević, Milena and Marinković, Aleksandar and Bugarski, Branko",
year = "2023",
abstract = "Vaccinium myrtillus L.(Ericaceae), a perennial, wild, and small deciduous shrub that grows in the mountains and forests of Europe, contains anthocyanins, phenolic acids, flavonoids, fatty acids, stilbenes, iridoid glycosides, dietary fibers, vitamins, and minerals. The leaves' extracts are widely used in traditional medicine due to their astringent, antiseptic, antioxidant, anti-inflammatory, skin-rejuvenating, lipid-lowering, hypolipidemic, and hypoglycemic activities. The novel extraction techniques, including ultrasound-assisted extraction, provide various benefits, such as reducing solvent consumption and extraction time and increasing extraction yield, and quality. Hence, in the present study, V. myrtillus extracts were prepared using dried leaves (0.66 g), 50% ethanol as the extraction solvent (20 mL), and maceration (60 min) or ultrasound-assisted extraction (ultrasound probe, amplitude of 60% for 5 min). The obtained extracts were examined in terms of total polyphenol content (TPC) and antioxidant activity (ABTS, DPPH, FRAP, and CUPRAC assays). The TPC of the extract prepared using maceration was 55.2±0.7 mg gallic acid equivalents (GAE)/g of plant material, while the TPC of the extract prepared using an ultrasound probe was 55.6±1.0 mg GAE/g. The DPPH radical scavenging activities of the extracts correlated with the TPC and amounted to 1.81±0.05 mg/mL for macerate and 1.79±0.02 mg/mL for the extract obtained using an ultrasound probe, whereas ABTS antioxidant capacity did not correlate with the polyphenol concentration, 31.4±0.9 µmol Trolox equivalents (TE)/g for the macerate and 43.4±1.1 µmol TE/g for the extract from the ultrasound-assisted extraction. According to the results of FRAP and CUPRAC assays, the antioxidant potential was similar for both extracts (15.3±0.2 and 15.5±0.2 µmol Fe2+/g and 45.7±0.5 and 46.0±0.7 µmol TE/g, respectively). Due to higher ABTS radical scavenging potential and significantly shorter extraction time, V. myrtillus extract prepared using an ultrasound probe was favored. The present research was an initial step in the preparation of V. myrtillus extracts which can be potentially implemented in food, pharmaceutical, and cosmetic formulations.",
publisher = "Zvornik : University of East Sarajevo, Faculty of Technology",
journal = "Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina",
title = "Comparison of maceration and ultrasound-assisted extraction of antioxidant compounds from Vaccinium myrtillus L.",
pages = "172-178",
url = "https://hdl.handle.net/21.15107/rcub_cer_7332"
}
Batinić, P., Jovanović, A. A., Rajab Elferjane, M., Čutović, N., Milošević, M., Marinković, A.,& Bugarski, B.. (2023). Comparison of maceration and ultrasound-assisted extraction of antioxidant compounds from Vaccinium myrtillus L.. in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina
Zvornik : University of East Sarajevo, Faculty of Technology., 172-178.
https://hdl.handle.net/21.15107/rcub_cer_7332
Batinić P, Jovanović AA, Rajab Elferjane M, Čutović N, Milošević M, Marinković A, Bugarski B. Comparison of maceration and ultrasound-assisted extraction of antioxidant compounds from Vaccinium myrtillus L.. in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina. 2023;:172-178.
https://hdl.handle.net/21.15107/rcub_cer_7332 .
Batinić, Petar, Jovanović, Aleksandra A., Rajab Elferjane, Muna, Čutović, Natalija, Milošević, Milena, Marinković, Aleksandar, Bugarski, Branko, "Comparison of maceration and ultrasound-assisted extraction of antioxidant compounds from Vaccinium myrtillus L." in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina (2023):172-178,
https://hdl.handle.net/21.15107/rcub_cer_7332 .

Physicochemical characterisation of Thymus serpyllum extracts prepared using natural deep eutectic solvents

Milošević, Milena; Marinković, Aleksandar; Batinić, Petar M.; Đuričković, Ivan; Jovanović, Aleksandra A.

(Zvornik : University of East Sarajevo, Faculty of Technology, 2023)

TY  - CONF
AU  - Milošević, Milena
AU  - Marinković, Aleksandar
AU  - Batinić, Petar M.
AU  - Đuričković, Ivan
AU  - Jovanović, Aleksandra A.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7336
AB  - Thymus serpyllum L. (wild thyme) extracts were prepared using 1 g of plant material and three natural deep eutectic solvents (30 mL, malic acid+maltose, lactic acid+menthol, or citric acid+glycerol with 50% of water) in maceration (90 min). The extracts were characterized in terms of total polyphenol content (TPC), total protein content, extraction yield, zeta potential, conductivity, pH, density, surface tension, and viscosity. TPC was the highest in citric acid+glycerol extract (35.06±1.13 mg gallic acid equivalents (GAE)/g of plant material), whereas malic acid+maltose and lactic acid+menthol extracts possessed similar TPC (29.62±1.11 and 28.94±1.15 mg GAE/g, respectively). Total protein content amounted to 5.55±0.20 mg/g in citric acid+glycerol extract, while significantly lower values were determined in malic acid+maltose and lactic acid+menthol extracts (1.22±0.30 and 1.73±0.18 mg/g, respectively). The extraction yield was the highest for citric acid+glycerol extract, 1.57±0.11%, followed by malic acid+maltose and lactic acid+menthol extracts, 1.28±0.10 and 1.27±0.13%, respectively. Zeta potential (absolute value, as a predictor of potential application in water treatment) was low in all extracts (0.86±0.06 mV for citric acid+glycerol, -0.35±0.09 mV for lactic acid+menthol, and -0.17±0.05 mV for malic acid+maltose extract). The conductivity (as a predictor of antioxidant capacity) was in the range of 2.35±0.21 and 2.71±0.29 mS/cm (citric acid+glycerol and malic acid+maltose extracts) to 5.70±0.23 mS/cm (lactic acid+menthol extract). pH ranged from 1.44 in citric acid+glycerol extract to 1.78 and 1.85 in malic acid+maltose and lactic acid+menthol extracts. Density varied from 1.067±0.003 g/mL for lactic acid+menthol extract to 1.169±0.002 and 1.195±0.005 g/mL for citric acid+glycerol and malic acid+maltose extracts. Surface tension was the highest in citric acid+glycerol extract (38.0±0.4 mN/m), followed by malic acid+maltose and lactic acid+menthol extracts (31.5±0.4 and 25.9±0.1 mN/m, respectively). The viscosity of lactic acid+menthol extract was significantly lower (1.83±0.30 mPa•s) in comparison to malic acid+maltose and citric acid+glycerol extracts (6.64±0.15 and 7.84±0.10 mPa•s, respectively). The highest TPC, total proteins, and extraction yield were measured in citric acid+glycerol extract, while lactic acid+menthol extract possessed the highest conductivity and the lowest density, surface tension, and viscosity. Therefore, the constitution of natural deep eutectic solvent should be optimized depending on the future application of T. serpyllum extract.
PB  - Zvornik : University of East Sarajevo, Faculty of Technology
C3  - Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina
T1  - Physicochemical characterisation of Thymus serpyllum extracts prepared using natural deep eutectic solvents
SP  - 258
EP  - 266
UR  - https://hdl.handle.net/21.15107/rcub_cer_7336
ER  - 
@conference{
author = "Milošević, Milena and Marinković, Aleksandar and Batinić, Petar M. and Đuričković, Ivan and Jovanović, Aleksandra A.",
year = "2023",
abstract = "Thymus serpyllum L. (wild thyme) extracts were prepared using 1 g of plant material and three natural deep eutectic solvents (30 mL, malic acid+maltose, lactic acid+menthol, or citric acid+glycerol with 50% of water) in maceration (90 min). The extracts were characterized in terms of total polyphenol content (TPC), total protein content, extraction yield, zeta potential, conductivity, pH, density, surface tension, and viscosity. TPC was the highest in citric acid+glycerol extract (35.06±1.13 mg gallic acid equivalents (GAE)/g of plant material), whereas malic acid+maltose and lactic acid+menthol extracts possessed similar TPC (29.62±1.11 and 28.94±1.15 mg GAE/g, respectively). Total protein content amounted to 5.55±0.20 mg/g in citric acid+glycerol extract, while significantly lower values were determined in malic acid+maltose and lactic acid+menthol extracts (1.22±0.30 and 1.73±0.18 mg/g, respectively). The extraction yield was the highest for citric acid+glycerol extract, 1.57±0.11%, followed by malic acid+maltose and lactic acid+menthol extracts, 1.28±0.10 and 1.27±0.13%, respectively. Zeta potential (absolute value, as a predictor of potential application in water treatment) was low in all extracts (0.86±0.06 mV for citric acid+glycerol, -0.35±0.09 mV for lactic acid+menthol, and -0.17±0.05 mV for malic acid+maltose extract). The conductivity (as a predictor of antioxidant capacity) was in the range of 2.35±0.21 and 2.71±0.29 mS/cm (citric acid+glycerol and malic acid+maltose extracts) to 5.70±0.23 mS/cm (lactic acid+menthol extract). pH ranged from 1.44 in citric acid+glycerol extract to 1.78 and 1.85 in malic acid+maltose and lactic acid+menthol extracts. Density varied from 1.067±0.003 g/mL for lactic acid+menthol extract to 1.169±0.002 and 1.195±0.005 g/mL for citric acid+glycerol and malic acid+maltose extracts. Surface tension was the highest in citric acid+glycerol extract (38.0±0.4 mN/m), followed by malic acid+maltose and lactic acid+menthol extracts (31.5±0.4 and 25.9±0.1 mN/m, respectively). The viscosity of lactic acid+menthol extract was significantly lower (1.83±0.30 mPa•s) in comparison to malic acid+maltose and citric acid+glycerol extracts (6.64±0.15 and 7.84±0.10 mPa•s, respectively). The highest TPC, total proteins, and extraction yield were measured in citric acid+glycerol extract, while lactic acid+menthol extract possessed the highest conductivity and the lowest density, surface tension, and viscosity. Therefore, the constitution of natural deep eutectic solvent should be optimized depending on the future application of T. serpyllum extract.",
publisher = "Zvornik : University of East Sarajevo, Faculty of Technology",
journal = "Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina",
title = "Physicochemical characterisation of Thymus serpyllum extracts prepared using natural deep eutectic solvents",
pages = "258-266",
url = "https://hdl.handle.net/21.15107/rcub_cer_7336"
}
Milošević, M., Marinković, A., Batinić, P. M., Đuričković, I.,& Jovanović, A. A.. (2023). Physicochemical characterisation of Thymus serpyllum extracts prepared using natural deep eutectic solvents. in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina
Zvornik : University of East Sarajevo, Faculty of Technology., 258-266.
https://hdl.handle.net/21.15107/rcub_cer_7336
Milošević M, Marinković A, Batinić PM, Đuričković I, Jovanović AA. Physicochemical characterisation of Thymus serpyllum extracts prepared using natural deep eutectic solvents. in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina. 2023;:258-266.
https://hdl.handle.net/21.15107/rcub_cer_7336 .
Milošević, Milena, Marinković, Aleksandar, Batinić, Petar M., Đuričković, Ivan, Jovanović, Aleksandra A., "Physicochemical characterisation of Thymus serpyllum extracts prepared using natural deep eutectic solvents" in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina (2023):258-266,
https://hdl.handle.net/21.15107/rcub_cer_7336 .

In vitro antioxidant activity of cotton fabric treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts

Milošević, Milena; Jovanović, Aleksandra A.; Batinić, Petar M.; Grujić, Dragana; Knežević, Nataša; Marinković, Aleksandar; Milanović, Jovana

(Zvornik : University of East Sarajevo, Faculty of Technology, 2023)

TY  - CONF
AU  - Milošević, Milena
AU  - Jovanović, Aleksandra A.
AU  - Batinić, Petar M.
AU  - Grujić, Dragana
AU  - Knežević, Nataša
AU  - Marinković, Aleksandar
AU  - Milanović, Jovana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7338
AB  - The plants contain a large number of various compounds that exhibit significant antioxidant 
activity. Among them, polyphenols and flavonoids are the most studied compounds with different 
biological properties, including antioxidant activity. The functionalization of cotton fabric with natural compounds from plants results in the material with improved antioxidative properties. In this study, cotton fabrics treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts were investigated in terms of antioxidant properties and chemical composition. In vitro antioxidant capacity of ethanol and water extracts, and the cotton fabric before and after functionalization was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH•), and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS•+) radicals scavenging capacity assays. FTIR and UV–Vis spectroscopy elucidated the structure of the cotton fabric, extracts, and functionalized cotton fabric. FTIR spectroscopy demonstrated that the structure of cellulose was dominated in cotton, and also proved the presence of a low percentage of protein, pectin, oil, fat, and wax, as well as, binding of compounds from the extract by cross-linking with long chains of structure cotton. In dry extracts, the presence of various chemical functional groups was confirmed. UV-Vis analysis identified the active components in T. serpyllum extracts. Namely, absorption values for both spectra (water and ethanol samples) at 215-253 nm, 263-384 nm, are specific for phenolic acids, and flavonoids. Also, one of the aims of the study was to investigate the influence of various extracts (water and ethanol samples) on the antioxidant activity of cotton fabric. All extracts demonstrated excellent antioxidant properties, more potent than the reference antioxidant (ascorbic acid) in both antioxidant assays (between 85-86% in DPPH and 94-96% in ABTS assays). Pure T. serpyllum water extract was the most potent in the DPPH assay (86%), while pure ethanolic extract was the most potent antioxidant in the ABTS assay (96%). The antioxidant capacity of raw cotton fabric was insufficient (4%). On the other hand, in the DPPH assay, samples of cotton fabric with extract showed moderate activity with scavenging activity of 48% and 45% for ethanol and water extracts, respectively. Additionally,
in the ABTS assay, the antioxidant activity of treated cotton fabric was 51% and 46% for ethanol 
and water extracts, respectively.
PB  - Zvornik : University of East Sarajevo, Faculty of Technology
C3  - Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina
T1  - In vitro antioxidant activity of cotton fabric treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts
SP  - 128
EP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_cer_7338
ER  - 
@conference{
author = "Milošević, Milena and Jovanović, Aleksandra A. and Batinić, Petar M. and Grujić, Dragana and Knežević, Nataša and Marinković, Aleksandar and Milanović, Jovana",
year = "2023",
abstract = "The plants contain a large number of various compounds that exhibit significant antioxidant 
activity. Among them, polyphenols and flavonoids are the most studied compounds with different 
biological properties, including antioxidant activity. The functionalization of cotton fabric with natural compounds from plants results in the material with improved antioxidative properties. In this study, cotton fabrics treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts were investigated in terms of antioxidant properties and chemical composition. In vitro antioxidant capacity of ethanol and water extracts, and the cotton fabric before and after functionalization was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH•), and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS•+) radicals scavenging capacity assays. FTIR and UV–Vis spectroscopy elucidated the structure of the cotton fabric, extracts, and functionalized cotton fabric. FTIR spectroscopy demonstrated that the structure of cellulose was dominated in cotton, and also proved the presence of a low percentage of protein, pectin, oil, fat, and wax, as well as, binding of compounds from the extract by cross-linking with long chains of structure cotton. In dry extracts, the presence of various chemical functional groups was confirmed. UV-Vis analysis identified the active components in T. serpyllum extracts. Namely, absorption values for both spectra (water and ethanol samples) at 215-253 nm, 263-384 nm, are specific for phenolic acids, and flavonoids. Also, one of the aims of the study was to investigate the influence of various extracts (water and ethanol samples) on the antioxidant activity of cotton fabric. All extracts demonstrated excellent antioxidant properties, more potent than the reference antioxidant (ascorbic acid) in both antioxidant assays (between 85-86% in DPPH and 94-96% in ABTS assays). Pure T. serpyllum water extract was the most potent in the DPPH assay (86%), while pure ethanolic extract was the most potent antioxidant in the ABTS assay (96%). The antioxidant capacity of raw cotton fabric was insufficient (4%). On the other hand, in the DPPH assay, samples of cotton fabric with extract showed moderate activity with scavenging activity of 48% and 45% for ethanol and water extracts, respectively. Additionally,
in the ABTS assay, the antioxidant activity of treated cotton fabric was 51% and 46% for ethanol 
and water extracts, respectively.",
publisher = "Zvornik : University of East Sarajevo, Faculty of Technology",
journal = "Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina",
title = "In vitro antioxidant activity of cotton fabric treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts",
pages = "128-135",
url = "https://hdl.handle.net/21.15107/rcub_cer_7338"
}
Milošević, M., Jovanović, A. A., Batinić, P. M., Grujić, D., Knežević, N., Marinković, A.,& Milanović, J.. (2023). In vitro antioxidant activity of cotton fabric treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts. in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina
Zvornik : University of East Sarajevo, Faculty of Technology., 128-135.
https://hdl.handle.net/21.15107/rcub_cer_7338
Milošević M, Jovanović AA, Batinić PM, Grujić D, Knežević N, Marinković A, Milanović J. In vitro antioxidant activity of cotton fabric treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts. in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina. 2023;:128-135.
https://hdl.handle.net/21.15107/rcub_cer_7338 .
Milošević, Milena, Jovanović, Aleksandra A., Batinić, Petar M., Grujić, Dragana, Knežević, Nataša, Marinković, Aleksandar, Milanović, Jovana, "In vitro antioxidant activity of cotton fabric treated with ethanol and water Thymus serpyllum L. (wild thyme) extracts" in Proceedings - VIII International Congress "Engineering, Environment and Materials in Process Industry", EEM 2023, March 20-23 2023, Jahorina (2023):128-135,
https://hdl.handle.net/21.15107/rcub_cer_7338 .

The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles

Jovanović, Aleksandra A.; Rajab Elferjane, Muna; Milošević, Milena; Batinić, Petar; Bošnjaković, Jovana; Rančić, Milica; Marinković, Aleksandar

(Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala, 2023)

TY  - CONF
AU  - Jovanović, Aleksandra A.
AU  - Rajab Elferjane, Muna
AU  - Milošević, Milena
AU  - Batinić, Petar
AU  - Bošnjaković, Jovana
AU  - Rančić, Milica
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7333
AB  - Wild thyme contains biologically active compounds, particularly polyphenols (flavonoids and phenolic acids) that exert antitumor, antimicrobial, anti-inflammatory, antioxidant, immunomodulatory, analgesic, and spasmolytic activities. Nevertheless, the mentioned bioactive compounds have low stability, solubility, and bioavailability, thus their application is limited. Liposomal particles have been widely used for the encapsulation of bioactive components, due to their high structural integrity, stability during storage, and controlled release capability. In the present study, phospholipid-cholesterol liposomal particles, as the carrier for wild thyme extract, were developed. The stability of extract-loaded liposomes was monitored for 21 days by measuring vesicle size, polydispersity index (PDI), and zeta potential. The particle size and PDI of extract-loaded liposomes did not change drastically during 21 days of storage and amounted to ~450 nm and ~0.155, respectively. The zeta potential varied in the liposomes and started to decrease after 7 days of storage (from -21.0 mV to 20.3 mV, without a statistically significant difference), while the zeta potential value after 21 days was statistically significantly lower in comparison to the 1st day (19.3 mV). The beneficial effects of polyphenols on human health, as well as showed storage stability of the prepared liposomes highlight the use of the wild thyme extract-loaded phospholipid-cholesterol liposomal particles for potential application in food, pharmaceutical, and cosmetic industries.
PB  - Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala
C3  - Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia
T1  - The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles
T1  - Stabilnost lipozomalnih čestica sa inkapsuliranim ekstraktom majčine dušice
SP  - 96
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_cer_7333
ER  - 
@conference{
author = "Jovanović, Aleksandra A. and Rajab Elferjane, Muna and Milošević, Milena and Batinić, Petar and Bošnjaković, Jovana and Rančić, Milica and Marinković, Aleksandar",
year = "2023",
abstract = "Wild thyme contains biologically active compounds, particularly polyphenols (flavonoids and phenolic acids) that exert antitumor, antimicrobial, anti-inflammatory, antioxidant, immunomodulatory, analgesic, and spasmolytic activities. Nevertheless, the mentioned bioactive compounds have low stability, solubility, and bioavailability, thus their application is limited. Liposomal particles have been widely used for the encapsulation of bioactive components, due to their high structural integrity, stability during storage, and controlled release capability. In the present study, phospholipid-cholesterol liposomal particles, as the carrier for wild thyme extract, were developed. The stability of extract-loaded liposomes was monitored for 21 days by measuring vesicle size, polydispersity index (PDI), and zeta potential. The particle size and PDI of extract-loaded liposomes did not change drastically during 21 days of storage and amounted to ~450 nm and ~0.155, respectively. The zeta potential varied in the liposomes and started to decrease after 7 days of storage (from -21.0 mV to 20.3 mV, without a statistically significant difference), while the zeta potential value after 21 days was statistically significantly lower in comparison to the 1st day (19.3 mV). The beneficial effects of polyphenols on human health, as well as showed storage stability of the prepared liposomes highlight the use of the wild thyme extract-loaded phospholipid-cholesterol liposomal particles for potential application in food, pharmaceutical, and cosmetic industries.",
publisher = "Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala",
journal = "Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia",
title = "The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles, Stabilnost lipozomalnih čestica sa inkapsuliranim ekstraktom majčine dušice",
pages = "96-101",
url = "https://hdl.handle.net/21.15107/rcub_cer_7333"
}
Jovanović, A. A., Rajab Elferjane, M., Milošević, M., Batinić, P., Bošnjaković, J., Rančić, M.,& Marinković, A.. (2023). The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles. in Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia
Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala., 96-101.
https://hdl.handle.net/21.15107/rcub_cer_7333
Jovanović AA, Rajab Elferjane M, Milošević M, Batinić P, Bošnjaković J, Rančić M, Marinković A. The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles. in Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia. 2023;:96-101.
https://hdl.handle.net/21.15107/rcub_cer_7333 .
Jovanović, Aleksandra A., Rajab Elferjane, Muna, Milošević, Milena, Batinić, Petar, Bošnjaković, Jovana, Rančić, Milica, Marinković, Aleksandar, "The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles" in Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia (2023):96-101,
https://hdl.handle.net/21.15107/rcub_cer_7333 .

Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions

Janković, Bojan; Manić, Nebojša; Popović, Mina; Cvetković, Slobodan; Dželetović, Željko; Stojiljković, Dragoslava

(Elsevier B.V., 2023)

TY  - JOUR
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Popović, Mina
AU  - Cvetković, Slobodan
AU  - Dželetović, Željko
AU  - Stojiljković, Dragoslava
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5647
AB  - This work provides insight into possibilities of maximum utilization of C3-C4 energy crops for thermo-chemical conversion (slow pyrolysis) into high value biochemicals, platform chemicals, drop-in fuels and combustible gases, using coupled kinetic and thermodynamic analyses. In order to examine the kinetics of decomposition of lignocellulosic components, model-free and model-based methods faded from thermal analysis data were used. Thermodynamic compensation was used for explicatory of entropy controlled process, where conformational changes and chemical exchange directly affect the type and distribution of obtained pyrolytic products. It was shown that external variable (i.e. the heating rate/temperature) does not change either an entire reaction mechanism (mechanistic nature of MG and AD pyrolyses) or transition state, but it changes activation enthalpy and activation entropy which lead to differences in terms of heat energy consumption, pyrolysis favorability and thus rates of generation of activated complex among feedstocks. To investigate the interplay of catalysts (present in feedstocks as minerals) and reactants, selective energy transfer (SET) model was applied. The model showed an activity of catalyst with different outputs towards two reactants, lignin part of the structure in MG and 1,8-cineole in AD. It was shown that AD is more convenient for thermal conversion than MG, regarding to lower transformation energy requirement, higher reactivity, as well as much faster accumulation of products.
PB  - Elsevier B.V.
T2  - Industrial Crops and Products
T1  - Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions
VL  - 194
SP  - 116275
DO  - 10.1016/j.indcrop.2023.116275
ER  - 
@article{
author = "Janković, Bojan and Manić, Nebojša and Popović, Mina and Cvetković, Slobodan and Dželetović, Željko and Stojiljković, Dragoslava",
year = "2023",
abstract = "This work provides insight into possibilities of maximum utilization of C3-C4 energy crops for thermo-chemical conversion (slow pyrolysis) into high value biochemicals, platform chemicals, drop-in fuels and combustible gases, using coupled kinetic and thermodynamic analyses. In order to examine the kinetics of decomposition of lignocellulosic components, model-free and model-based methods faded from thermal analysis data were used. Thermodynamic compensation was used for explicatory of entropy controlled process, where conformational changes and chemical exchange directly affect the type and distribution of obtained pyrolytic products. It was shown that external variable (i.e. the heating rate/temperature) does not change either an entire reaction mechanism (mechanistic nature of MG and AD pyrolyses) or transition state, but it changes activation enthalpy and activation entropy which lead to differences in terms of heat energy consumption, pyrolysis favorability and thus rates of generation of activated complex among feedstocks. To investigate the interplay of catalysts (present in feedstocks as minerals) and reactants, selective energy transfer (SET) model was applied. The model showed an activity of catalyst with different outputs towards two reactants, lignin part of the structure in MG and 1,8-cineole in AD. It was shown that AD is more convenient for thermal conversion than MG, regarding to lower transformation energy requirement, higher reactivity, as well as much faster accumulation of products.",
publisher = "Elsevier B.V.",
journal = "Industrial Crops and Products",
title = "Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions",
volume = "194",
pages = "116275",
doi = "10.1016/j.indcrop.2023.116275"
}
Janković, B., Manić, N., Popović, M., Cvetković, S., Dželetović, Ž.,& Stojiljković, D.. (2023). Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions. in Industrial Crops and Products
Elsevier B.V.., 194, 116275.
https://doi.org/10.1016/j.indcrop.2023.116275
Janković B, Manić N, Popović M, Cvetković S, Dželetović Ž, Stojiljković D. Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions. in Industrial Crops and Products. 2023;194:116275.
doi:10.1016/j.indcrop.2023.116275 .
Janković, Bojan, Manić, Nebojša, Popović, Mina, Cvetković, Slobodan, Dželetović, Željko, Stojiljković, Dragoslava, "Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions" in Industrial Crops and Products, 194 (2023):116275,
https://doi.org/10.1016/j.indcrop.2023.116275 . .
4
4

Significance of 1,25-Dihydroxyvitamin D3 on Overall Mortality in Peritoneal Dialysis Patients with COVID-19

Baralić, Marko; Robajac, Dragana; Penezić, Ana; Brković, Voin; Gligorijević, Nikola; Bontić, Ana; Pavlović, Jelena; Nikolić, Jelena; Miljuš, Goran; Dobrijević, Zorana; Šunderić, Miloš; Pažitna, Lucija; Katrlík, Jaroslav; Nedić, Olgica; Laušević, Mirjana

(Switzerland : Multidisciplinary Digital Publishing Institute (MDPI), 2023)

TY  - JOUR
AU  - Baralić, Marko
AU  - Robajac, Dragana
AU  - Penezić, Ana
AU  - Brković, Voin
AU  - Gligorijević, Nikola
AU  - Bontić, Ana
AU  - Pavlović, Jelena
AU  - Nikolić, Jelena
AU  - Miljuš, Goran
AU  - Dobrijević, Zorana
AU  - Šunderić, Miloš
AU  - Pažitna, Lucija
AU  - Katrlík, Jaroslav
AU  - Nedić, Olgica
AU  - Laušević, Mirjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6445
AB  - In previous publications, we pointed out the importance of mannosylation of fibrinogen for the development of cardiovascular complications and fucosylation as a predictor of peritoneal membrane dysfunction in patients on peritoneal dialysis (PD). After a follow-up period of 30 months from the onset of the COVID-19 pandemic, we evaluated the significance of 1,25-dihydroxyvitamin D3 (calcitriol) therapy, primary disease, biochemical and hematologic analyzes, and previously performed glycan analysis by lectin-based microarray as predictors of mortality in this patient group. After univariate Cox regression analysis, diabetes mellitus (DM) and calcitriol therapy were found to be potential predictors of mortality. Additional multivariate Cox regression analysis confirmed that only DM was a predictor of mortality. Nevertheless, the use of calcitriol in therapy significantly reduced mortality in this patient group, as shown by the Kaplan–Meier survival curve. The presence of DM as a concomitant disease proved to be a strong predictor of fatal outcome in PD patients infected with SARS-CoV-2. This is the first study to indicate the importance and beneficial effect of calcitriol therapy on survival in PD patients with COVID-19 infection. In addition, this study points to the possibility that adverse thrombogenic events observed in PD patients during the pandemic may be caused by aberrant fibrinogen glycosylation.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Nutrients
T1  - Significance of 1,25-Dihydroxyvitamin D3 on Overall Mortality in Peritoneal Dialysis Patients with COVID-19
VL  - 15
IS  - 9
SP  - 2050
DO  - 10.3390/nu15092050
ER  - 
@article{
author = "Baralić, Marko and Robajac, Dragana and Penezić, Ana and Brković, Voin and Gligorijević, Nikola and Bontić, Ana and Pavlović, Jelena and Nikolić, Jelena and Miljuš, Goran and Dobrijević, Zorana and Šunderić, Miloš and Pažitna, Lucija and Katrlík, Jaroslav and Nedić, Olgica and Laušević, Mirjana",
year = "2023",
abstract = "In previous publications, we pointed out the importance of mannosylation of fibrinogen for the development of cardiovascular complications and fucosylation as a predictor of peritoneal membrane dysfunction in patients on peritoneal dialysis (PD). After a follow-up period of 30 months from the onset of the COVID-19 pandemic, we evaluated the significance of 1,25-dihydroxyvitamin D3 (calcitriol) therapy, primary disease, biochemical and hematologic analyzes, and previously performed glycan analysis by lectin-based microarray as predictors of mortality in this patient group. After univariate Cox regression analysis, diabetes mellitus (DM) and calcitriol therapy were found to be potential predictors of mortality. Additional multivariate Cox regression analysis confirmed that only DM was a predictor of mortality. Nevertheless, the use of calcitriol in therapy significantly reduced mortality in this patient group, as shown by the Kaplan–Meier survival curve. The presence of DM as a concomitant disease proved to be a strong predictor of fatal outcome in PD patients infected with SARS-CoV-2. This is the first study to indicate the importance and beneficial effect of calcitriol therapy on survival in PD patients with COVID-19 infection. In addition, this study points to the possibility that adverse thrombogenic events observed in PD patients during the pandemic may be caused by aberrant fibrinogen glycosylation.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Nutrients",
title = "Significance of 1,25-Dihydroxyvitamin D3 on Overall Mortality in Peritoneal Dialysis Patients with COVID-19",
volume = "15",
number = "9",
pages = "2050",
doi = "10.3390/nu15092050"
}
Baralić, M., Robajac, D., Penezić, A., Brković, V., Gligorijević, N., Bontić, A., Pavlović, J., Nikolić, J., Miljuš, G., Dobrijević, Z., Šunderić, M., Pažitna, L., Katrlík, J., Nedić, O.,& Laušević, M.. (2023). Significance of 1,25-Dihydroxyvitamin D3 on Overall Mortality in Peritoneal Dialysis Patients with COVID-19. in Nutrients
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 15(9), 2050.
https://doi.org/10.3390/nu15092050
Baralić M, Robajac D, Penezić A, Brković V, Gligorijević N, Bontić A, Pavlović J, Nikolić J, Miljuš G, Dobrijević Z, Šunderić M, Pažitna L, Katrlík J, Nedić O, Laušević M. Significance of 1,25-Dihydroxyvitamin D3 on Overall Mortality in Peritoneal Dialysis Patients with COVID-19. in Nutrients. 2023;15(9):2050.
doi:10.3390/nu15092050 .
Baralić, Marko, Robajac, Dragana, Penezić, Ana, Brković, Voin, Gligorijević, Nikola, Bontić, Ana, Pavlović, Jelena, Nikolić, Jelena, Miljuš, Goran, Dobrijević, Zorana, Šunderić, Miloš, Pažitna, Lucija, Katrlík, Jaroslav, Nedić, Olgica, Laušević, Mirjana, "Significance of 1,25-Dihydroxyvitamin D3 on Overall Mortality in Peritoneal Dialysis Patients with COVID-19" in Nutrients, 15, no. 9 (2023):2050,
https://doi.org/10.3390/nu15092050 . .
4
1

Prediction of Mortality in Patients on Peritoneal Dialysis Based on the Fibrinogen Mannosylation

Baralić, Marko; Pažitná, Lucia; Brković, Voin; Laušević, Mirjana; Gligorijević, Nikola; Katrlík, Jaroslav; Nedić, Olgica; Robajac, Dragana

(Switzerland : Multidisciplinary Digital Publishing Institute (MDPI), 2023)

TY  - JOUR
AU  - Baralić, Marko
AU  - Pažitná, Lucia
AU  - Brković, Voin
AU  - Laušević, Mirjana
AU  - Gligorijević, Nikola
AU  - Katrlík, Jaroslav
AU  - Nedić, Olgica
AU  - Robajac, Dragana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5664
AB  - As we already reported, fibrinogen fucosylation emerged as a prognostic marker of peritoneal
membrane function in end-stage renal disease (ESRD) patients on peritoneal dialysis. After a
follow-up period of 18 months, we estimated the ability of employed lectins, as well as other biochemical
parameters, to serve as mortality predictors in these patients. Following a univariate Cox
regression analysis, ferritin, urea clearance, residual diuresis, hyperglycemia, and an increase in the
signal intensity obtained with Galanthus nivalis lectin (GNL) emerged as potential mortality predictors,
but additional multivariate Cox regression analysis pointed only to glucose concentration
and GNL as mortality predictors. Higher signal intensity obtained with GNL in patients that died
suggested the importance of paucimannosidic/highly mannosidic N-glycan structures on fibrinogen
as factors that are related to unwanted cardiovascular events and all-cause mortality and can possibly
be seen as a prediction tool. Altered glycan structures composed of mannose residues are expected
to affect the reactivity of mannosylated glycoproteins with mannose-binding lectin and possibly
the entire cascade of events linked to this lectin. Since patients with ESRD are prone to cardiovascular
complications and the formation of atherosclerotic plaques, one can hypothesize that fibrinogen
with increasingly exposed mannose residues may contribute to the unwanted events.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Cells
T1  - Prediction of Mortality in Patients on Peritoneal Dialysis Based on the Fibrinogen Mannosylation
VL  - 12
IS  - 351
DO  - 10.3390/cells12030351
ER  - 
@article{
author = "Baralić, Marko and Pažitná, Lucia and Brković, Voin and Laušević, Mirjana and Gligorijević, Nikola and Katrlík, Jaroslav and Nedić, Olgica and Robajac, Dragana",
year = "2023",
abstract = "As we already reported, fibrinogen fucosylation emerged as a prognostic marker of peritoneal
membrane function in end-stage renal disease (ESRD) patients on peritoneal dialysis. After a
follow-up period of 18 months, we estimated the ability of employed lectins, as well as other biochemical
parameters, to serve as mortality predictors in these patients. Following a univariate Cox
regression analysis, ferritin, urea clearance, residual diuresis, hyperglycemia, and an increase in the
signal intensity obtained with Galanthus nivalis lectin (GNL) emerged as potential mortality predictors,
but additional multivariate Cox regression analysis pointed only to glucose concentration
and GNL as mortality predictors. Higher signal intensity obtained with GNL in patients that died
suggested the importance of paucimannosidic/highly mannosidic N-glycan structures on fibrinogen
as factors that are related to unwanted cardiovascular events and all-cause mortality and can possibly
be seen as a prediction tool. Altered glycan structures composed of mannose residues are expected
to affect the reactivity of mannosylated glycoproteins with mannose-binding lectin and possibly
the entire cascade of events linked to this lectin. Since patients with ESRD are prone to cardiovascular
complications and the formation of atherosclerotic plaques, one can hypothesize that fibrinogen
with increasingly exposed mannose residues may contribute to the unwanted events.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Cells",
title = "Prediction of Mortality in Patients on Peritoneal Dialysis Based on the Fibrinogen Mannosylation",
volume = "12",
number = "351",
doi = "10.3390/cells12030351"
}
Baralić, M., Pažitná, L., Brković, V., Laušević, M., Gligorijević, N., Katrlík, J., Nedić, O.,& Robajac, D.. (2023). Prediction of Mortality in Patients on Peritoneal Dialysis Based on the Fibrinogen Mannosylation. in Cells
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 12(351).
https://doi.org/10.3390/cells12030351
Baralić M, Pažitná L, Brković V, Laušević M, Gligorijević N, Katrlík J, Nedić O, Robajac D. Prediction of Mortality in Patients on Peritoneal Dialysis Based on the Fibrinogen Mannosylation. in Cells. 2023;12(351).
doi:10.3390/cells12030351 .
Baralić, Marko, Pažitná, Lucia, Brković, Voin, Laušević, Mirjana, Gligorijević, Nikola, Katrlík, Jaroslav, Nedić, Olgica, Robajac, Dragana, "Prediction of Mortality in Patients on Peritoneal Dialysis Based on the Fibrinogen Mannosylation" in Cells, 12, no. 351 (2023),
https://doi.org/10.3390/cells12030351 . .
2
1

Bilirubin Interactions with Different Proteins and Implications of These Interactions

Gligorijević, Nikola; Minić, Simeon

(New York: Nova Science Publishers, Inc., 2022)

TY  - CHAP
AU  - Gligorijević, Nikola
AU  - Minić, Simeon
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6486
AB  - Bilirubin is a tetrapyrrole, yellow pigment, and it is a degradation product
created in heme metabolism. This molecule is predominantly present in
its unconjugated form in circulation, and it is mainly bound to human
serum albumin. The presence of small amounts of free, unconjugated
bilirubin enables its interactions with other circulation components. In
conditions like Gilbert syndrome or diabetes, the concentration of
unconjugated bilirubin increases in the blood, making other interacting
partners from circulation more important for its metabolism. In the liver,
bilirubin is converted to conjugated form, which is then excreted from
the organism. While the significant increase of bilirubin is toxic, research
suggests that small increases may be beneficial since bilirubin has
antioxidative and anticancer potential. In this chapter, interactions of
bilirubin with several proteins will be described together with the effects
of these interactions on the protein’s structure and function.
PB  - New York: Nova Science Publishers, Inc.
T2  - Advances in Biology
T1  - Bilirubin Interactions with Different Proteins and Implications of These Interactions
VL  - 1
SP  - 85
EP  - 122
UR  - https://hdl.handle.net/21.15107/rcub_cer_6486
ER  - 
@inbook{
author = "Gligorijević, Nikola and Minić, Simeon",
year = "2022",
abstract = "Bilirubin is a tetrapyrrole, yellow pigment, and it is a degradation product
created in heme metabolism. This molecule is predominantly present in
its unconjugated form in circulation, and it is mainly bound to human
serum albumin. The presence of small amounts of free, unconjugated
bilirubin enables its interactions with other circulation components. In
conditions like Gilbert syndrome or diabetes, the concentration of
unconjugated bilirubin increases in the blood, making other interacting
partners from circulation more important for its metabolism. In the liver,
bilirubin is converted to conjugated form, which is then excreted from
the organism. While the significant increase of bilirubin is toxic, research
suggests that small increases may be beneficial since bilirubin has
antioxidative and anticancer potential. In this chapter, interactions of
bilirubin with several proteins will be described together with the effects
of these interactions on the protein’s structure and function.",
publisher = "New York: Nova Science Publishers, Inc.",
journal = "Advances in Biology",
booktitle = "Bilirubin Interactions with Different Proteins and Implications of These Interactions",
volume = "1",
pages = "85-122",
url = "https://hdl.handle.net/21.15107/rcub_cer_6486"
}
Gligorijević, N.,& Minić, S.. (2022). Bilirubin Interactions with Different Proteins and Implications of These Interactions. in Advances in Biology
New York: Nova Science Publishers, Inc.., 1, 85-122.
https://hdl.handle.net/21.15107/rcub_cer_6486
Gligorijević N, Minić S. Bilirubin Interactions with Different Proteins and Implications of These Interactions. in Advances in Biology. 2022;1:85-122.
https://hdl.handle.net/21.15107/rcub_cer_6486 .
Gligorijević, Nikola, Minić, Simeon, "Bilirubin Interactions with Different Proteins and Implications of These Interactions" in Advances in Biology, 1 (2022):85-122,
https://hdl.handle.net/21.15107/rcub_cer_6486 .

Food antioxidants and their interaction with human proteins

Nedić, Olgica; Gligorijević, Nikola; Penezić, Ana; Minić, Simeon; Radomirović, Mirjana; Nikolić, Milan; Ćirković Veličković, Tanja

(Belgrade : University of Belgrade - Faculty of Agriculture, 2022)

TY  - CONF
AU  - Nedić, Olgica
AU  - Gligorijević, Nikola
AU  - Penezić, Ana
AU  - Minić, Simeon
AU  - Radomirović, Mirjana
AU  - Nikolić, Milan
AU  - Ćirković Veličković, Tanja
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6728
AB  - Our research work was focused on interactions between resveratrol (R) and tibnnogen (I), (dihydro)alpha-lipoic acid (ALA) and fibrinogen or albumin, and phycocyanobilin (PCB) and catalase. Resveratrol is found in grapes and berries, leafy greens are a source of ALA and alga Spirulina is a source of PCB. L-P interactions were investigated by following-up structural changes of proteins and/or ligands using spectrometric methods (spectrofluorimetry, CD, FTIR) and by examining the primary role of individual proteins upon ligand binding.
PB  - Belgrade : University of Belgrade - Faculty of Agriculture
C3  - Book of abstracts - 1st European Symposium on Phytochemicals in Medicine and Food (1EuSPMF), 7-9 September 2022, Belgrade, Serbia
T1  - Food antioxidants and their interaction with human proteins
SP  - 13
EP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_cer_6728
ER  - 
@conference{
author = "Nedić, Olgica and Gligorijević, Nikola and Penezić, Ana and Minić, Simeon and Radomirović, Mirjana and Nikolić, Milan and Ćirković Veličković, Tanja",
year = "2022",
abstract = "Our research work was focused on interactions between resveratrol (R) and tibnnogen (I), (dihydro)alpha-lipoic acid (ALA) and fibrinogen or albumin, and phycocyanobilin (PCB) and catalase. Resveratrol is found in grapes and berries, leafy greens are a source of ALA and alga Spirulina is a source of PCB. L-P interactions were investigated by following-up structural changes of proteins and/or ligands using spectrometric methods (spectrofluorimetry, CD, FTIR) and by examining the primary role of individual proteins upon ligand binding.",
publisher = "Belgrade : University of Belgrade - Faculty of Agriculture",
journal = "Book of abstracts - 1st European Symposium on Phytochemicals in Medicine and Food (1EuSPMF), 7-9 September 2022, Belgrade, Serbia",
title = "Food antioxidants and their interaction with human proteins",
pages = "13-13",
url = "https://hdl.handle.net/21.15107/rcub_cer_6728"
}
Nedić, O., Gligorijević, N., Penezić, A., Minić, S., Radomirović, M., Nikolić, M.,& Ćirković Veličković, T.. (2022). Food antioxidants and their interaction with human proteins. in Book of abstracts - 1st European Symposium on Phytochemicals in Medicine and Food (1EuSPMF), 7-9 September 2022, Belgrade, Serbia
Belgrade : University of Belgrade - Faculty of Agriculture., 13-13.
https://hdl.handle.net/21.15107/rcub_cer_6728
Nedić O, Gligorijević N, Penezić A, Minić S, Radomirović M, Nikolić M, Ćirković Veličković T. Food antioxidants and their interaction with human proteins. in Book of abstracts - 1st European Symposium on Phytochemicals in Medicine and Food (1EuSPMF), 7-9 September 2022, Belgrade, Serbia. 2022;:13-13.
https://hdl.handle.net/21.15107/rcub_cer_6728 .
Nedić, Olgica, Gligorijević, Nikola, Penezić, Ana, Minić, Simeon, Radomirović, Mirjana, Nikolić, Milan, Ćirković Veličković, Tanja, "Food antioxidants and their interaction with human proteins" in Book of abstracts - 1st European Symposium on Phytochemicals in Medicine and Food (1EuSPMF), 7-9 September 2022, Belgrade, Serbia (2022):13-13,
https://hdl.handle.net/21.15107/rcub_cer_6728 .

Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications

Gligorijević, Nikola; Šunderić, Miloš; Minić, Simeon; Nedić, Olgica; Nikolić, Milan

(Wiley, 2022)

TY  - CONF
AU  - Gligorijević, Nikola
AU  - Šunderić, Miloš
AU  - Minić, Simeon
AU  - Nedić, Olgica
AU  - Nikolić, Milan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6822
AB  - The interaction between phycocyanobilin (PCB), a bioactive
chromophore of blue-green cyanobacteria Spirulina’s phycobiliproteins,
and human alpha-2-macroglobulin (a2M), a universal
anti-proteinase, was investigated in this study under simulated
physiological conditions using spectroscopic techniques and a2M
activity assay. Protein a2M was found to bind PCB with a moderate
affinity, as assessed by spectrofluorimetric titration. The
binding constant was calculated to be 6.39105 M
 1 at 25°C. The
binding of PCB to a2M did not cause significant change in the
secondary structure of the protein, as determined by circular
dichroism. PCB protected a2M from oxidative damage in the
presence of AAPH-induced free radical overproduction. PCB
binding also effectively preserved a2M anti-proteinase activity.
Since a2M is involved in controlling the action of enzymes during
the inflammatory process, the protection that PCB expresses
could indirectly influence the intensity and direction of the body
response to impaired homeostasis, especially under oxidative
stress.
PB  - Wiley
C3  - FEBS Open Bio
T1  - Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications
VL  - 12
IS  - Supplement 1
SP  - 304
EP  - 304
DO  - 10.1002/2211-5463.13440
ER  - 
@conference{
author = "Gligorijević, Nikola and Šunderić, Miloš and Minić, Simeon and Nedić, Olgica and Nikolić, Milan",
year = "2022",
abstract = "The interaction between phycocyanobilin (PCB), a bioactive
chromophore of blue-green cyanobacteria Spirulina’s phycobiliproteins,
and human alpha-2-macroglobulin (a2M), a universal
anti-proteinase, was investigated in this study under simulated
physiological conditions using spectroscopic techniques and a2M
activity assay. Protein a2M was found to bind PCB with a moderate
affinity, as assessed by spectrofluorimetric titration. The
binding constant was calculated to be 6.39105 M
 1 at 25°C. The
binding of PCB to a2M did not cause significant change in the
secondary structure of the protein, as determined by circular
dichroism. PCB protected a2M from oxidative damage in the
presence of AAPH-induced free radical overproduction. PCB
binding also effectively preserved a2M anti-proteinase activity.
Since a2M is involved in controlling the action of enzymes during
the inflammatory process, the protection that PCB expresses
could indirectly influence the intensity and direction of the body
response to impaired homeostasis, especially under oxidative
stress.",
publisher = "Wiley",
journal = "FEBS Open Bio",
title = "Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications",
volume = "12",
number = "Supplement 1",
pages = "304-304",
doi = "10.1002/2211-5463.13440"
}
Gligorijević, N., Šunderić, M., Minić, S., Nedić, O.,& Nikolić, M.. (2022). Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications. in FEBS Open Bio
Wiley., 12(Supplement 1), 304-304.
https://doi.org/10.1002/2211-5463.13440
Gligorijević N, Šunderić M, Minić S, Nedić O, Nikolić M. Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications. in FEBS Open Bio. 2022;12(Supplement 1):304-304.
doi:10.1002/2211-5463.13440 .
Gligorijević, Nikola, Šunderić, Miloš, Minić, Simeon, Nedić, Olgica, Nikolić, Milan, "Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications" in FEBS Open Bio, 12, no. Supplement 1 (2022):304-304,
https://doi.org/10.1002/2211-5463.13440 . .
2

Physicochemical characterisation of dihydro-alpha-lipoic acid interaction with human serum albumin by multi-spectroscopic and molecular modelling approaches

Gligorijević, Nikola; Šukalović, Vladimir; Minić, Simeon; Miljuš, Goran; Nedić, Olgica; Penezić, Ana

(Belgrade : Serbian Chemical Society, 2021)

TY  - JOUR
AU  - Gligorijević, Nikola
AU  - Šukalović, Vladimir
AU  - Minić, Simeon
AU  - Miljuš, Goran
AU  - Nedić, Olgica
AU  - Penezić, Ana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4763
AB  - The binding of a popular food supplement and well-known antioxidant, dihydro-alpha-lipoic acid (DHLA) to human serum albumin (HSA) was characterised. The binding was monitored by several spectroscopic methods together with the molecular docking approach. HSA was able to bind DHLA with moderate affinity, 1.00±0.05×104 M-1. Spectroscopic data demonstrated that the preferential binding site for DHLA on HSA is IIA (Sudlow I). Both experimental and molecular docking analysis identified electrostatic (salt bridges) and hydrogen bonds as the key interactions involved in DHLA binding to HSA. Molecular docking confirmed that the Sudlow I site could accommodate DHLA and that the ligand is bound to the protein in a specific conformation. The molecular dynamic simulation showed that the formed complex is stable. Binding of DHLA does not affect the structure of the protein, but it thermally stabilises HSA. Bound DHLA had no effect on the susceptibility of HSA to trypsin digestion. Since DHLA is a commonly used food supplement, knowledge of its pharmacokinetics and pharmacodynamic properties in an organism is very important. This study further expands it by providing a detailed analysis of its interaction with HSA, the primary drug transporter in the circulation.
AB  - У раду су описане карктеристике везивања дихидро-липоинске киселине (DHLA), познатог суплемента у исхрани и антиоксиданса, за албумин из серума људи (HSA). Процес везивања је праћен применом већег броја спектроскопских метода и молекул-
ским моделовањем. HSA везује DHLA умереним афинитетом, 1,00±0,05×104 M-1. Спектроскопски резултати су показали да је везујуће место IIA (Sudlow I) главно место везивања DHLA за HSA. Експериментални, као и резултати молекулског моделовања, су идентификовали електростатичке (сони мостови) и водоничне везе као главне типове
интеракција. Резултати молекулског моделовања су потврдили да и место Sudlow I може везати DHLA, која је у том случају у специфичној конформацији. Симулација молекулске динамике је показала да је формирани комплекс стабилан. Везивање DHLA не
утиче на структуру протеина, али повећава његову термалну стабилност. Везани DHLA не утиче на подложност HSA трипсинској дигестији. Како је DHLA уобичајен суплемент у исхрани, знање о његовим фармакоконетичким и фармакодинамичким особинама је веома важно. Ово испитивање допуњује досадашња знања детаљном анализом интеракције DHLA са HSA, примарним транспортним протеином лекова у циркулацији.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Physicochemical characterisation of dihydro-alpha-lipoic acid interaction with human serum albumin by multi-spectroscopic and molecular modelling approaches
T1  - Физичко-хемијска карактеризација интеракције дихидро-липоинске киселине и албумина из серума људи применом мулти-спектроскопских метода и молекулског моделовања
VL  - 86
IS  - 9
SP  - 795
EP  - 807
DO  - 10.2298/JSC210420041G
ER  - 
@article{
author = "Gligorijević, Nikola and Šukalović, Vladimir and Minić, Simeon and Miljuš, Goran and Nedić, Olgica and Penezić, Ana",
year = "2021",
abstract = "The binding of a popular food supplement and well-known antioxidant, dihydro-alpha-lipoic acid (DHLA) to human serum albumin (HSA) was characterised. The binding was monitored by several spectroscopic methods together with the molecular docking approach. HSA was able to bind DHLA with moderate affinity, 1.00±0.05×104 M-1. Spectroscopic data demonstrated that the preferential binding site for DHLA on HSA is IIA (Sudlow I). Both experimental and molecular docking analysis identified electrostatic (salt bridges) and hydrogen bonds as the key interactions involved in DHLA binding to HSA. Molecular docking confirmed that the Sudlow I site could accommodate DHLA and that the ligand is bound to the protein in a specific conformation. The molecular dynamic simulation showed that the formed complex is stable. Binding of DHLA does not affect the structure of the protein, but it thermally stabilises HSA. Bound DHLA had no effect on the susceptibility of HSA to trypsin digestion. Since DHLA is a commonly used food supplement, knowledge of its pharmacokinetics and pharmacodynamic properties in an organism is very important. This study further expands it by providing a detailed analysis of its interaction with HSA, the primary drug transporter in the circulation., У раду су описане карктеристике везивања дихидро-липоинске киселине (DHLA), познатог суплемента у исхрани и антиоксиданса, за албумин из серума људи (HSA). Процес везивања је праћен применом већег броја спектроскопских метода и молекул-
ским моделовањем. HSA везује DHLA умереним афинитетом, 1,00±0,05×104 M-1. Спектроскопски резултати су показали да је везујуће место IIA (Sudlow I) главно место везивања DHLA за HSA. Експериментални, као и резултати молекулског моделовања, су идентификовали електростатичке (сони мостови) и водоничне везе као главне типове
интеракција. Резултати молекулског моделовања су потврдили да и место Sudlow I може везати DHLA, која је у том случају у специфичној конформацији. Симулација молекулске динамике је показала да је формирани комплекс стабилан. Везивање DHLA не
утиче на структуру протеина, али повећава његову термалну стабилност. Везани DHLA не утиче на подложност HSA трипсинској дигестији. Како је DHLA уобичајен суплемент у исхрани, знање о његовим фармакоконетичким и фармакодинамичким особинама је веома важно. Ово испитивање допуњује досадашња знања детаљном анализом интеракције DHLA са HSA, примарним транспортним протеином лекова у циркулацији.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Physicochemical characterisation of dihydro-alpha-lipoic acid interaction with human serum albumin by multi-spectroscopic and molecular modelling approaches, Физичко-хемијска карактеризација интеракције дихидро-липоинске киселине и албумина из серума људи применом мулти-спектроскопских метода и молекулског моделовања",
volume = "86",
number = "9",
pages = "795-807",
doi = "10.2298/JSC210420041G"
}
Gligorijević, N., Šukalović, V., Minić, S., Miljuš, G., Nedić, O.,& Penezić, A.. (2021). Physicochemical characterisation of dihydro-alpha-lipoic acid interaction with human serum albumin by multi-spectroscopic and molecular modelling approaches. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 86(9), 795-807.
https://doi.org/10.2298/JSC210420041G
Gligorijević N, Šukalović V, Minić S, Miljuš G, Nedić O, Penezić A. Physicochemical characterisation of dihydro-alpha-lipoic acid interaction with human serum albumin by multi-spectroscopic and molecular modelling approaches. in Journal of the Serbian Chemical Society. 2021;86(9):795-807.
doi:10.2298/JSC210420041G .
Gligorijević, Nikola, Šukalović, Vladimir, Minić, Simeon, Miljuš, Goran, Nedić, Olgica, Penezić, Ana, "Physicochemical characterisation of dihydro-alpha-lipoic acid interaction with human serum albumin by multi-spectroscopic and molecular modelling approaches" in Journal of the Serbian Chemical Society, 86, no. 9 (2021):795-807,
https://doi.org/10.2298/JSC210420041G . .
2
2

Ligand binding to fibrinogen influences its structure and function

Gligorijević, Nikola; Minić, Simeon; Radomirović, Mirjana; Lević, Steva; Ćirković Veličković, Tanja; Nikolić, Milan; Nedić, Olgica

(Serbian Biochemical Society, 2021)

TY  - CONF
AU  - Gligorijević, Nikola
AU  - Minić, Simeon
AU  - Radomirović, Mirjana
AU  - Lević, Steva
AU  - Ćirković Veličković, Tanja
AU  - Nikolić, Milan
AU  - Nedić, Olgica
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7287
AB  - Fibrinogen is a plasma protein most susceptible to oxidation. Through this chemical
modification, fibrinogen acquires thrombogenic characteristics in different
pathophysiological conditions. Increased carbonyl content and reduced porosity impair the
degradation of formed fibrin mediated by plasmin. Fibrinogen is capable of interacting
with many proteins, ions, and small molecules. These interactions can modify the
functions of this protein. The discovery of new binding partners that may protect
fibrinogen from harmful oxidation and, thus, preserve its normal function is essential.
Some of the newly detected interactions between fibrinogen and small, natural bioactive
molecules, together with the influence of these interactions on the structure and function of
fibrinogen, will be presented in this text.
PB  - Serbian Biochemical Society
C3  - Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia
T1  - Ligand binding to fibrinogen influences its structure and function
SP  - 31
EP  - 31
UR  - https://hdl.handle.net/21.15107/rcub_cer_7287
ER  - 
@conference{
author = "Gligorijević, Nikola and Minić, Simeon and Radomirović, Mirjana and Lević, Steva and Ćirković Veličković, Tanja and Nikolić, Milan and Nedić, Olgica",
year = "2021",
abstract = "Fibrinogen is a plasma protein most susceptible to oxidation. Through this chemical
modification, fibrinogen acquires thrombogenic characteristics in different
pathophysiological conditions. Increased carbonyl content and reduced porosity impair the
degradation of formed fibrin mediated by plasmin. Fibrinogen is capable of interacting
with many proteins, ions, and small molecules. These interactions can modify the
functions of this protein. The discovery of new binding partners that may protect
fibrinogen from harmful oxidation and, thus, preserve its normal function is essential.
Some of the newly detected interactions between fibrinogen and small, natural bioactive
molecules, together with the influence of these interactions on the structure and function of
fibrinogen, will be presented in this text.",
publisher = "Serbian Biochemical Society",
journal = "Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia",
title = "Ligand binding to fibrinogen influences its structure and function",
pages = "31-31",
url = "https://hdl.handle.net/21.15107/rcub_cer_7287"
}
Gligorijević, N., Minić, S., Radomirović, M., Lević, S., Ćirković Veličković, T., Nikolić, M.,& Nedić, O.. (2021). Ligand binding to fibrinogen influences its structure and function. in Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia
Serbian Biochemical Society., 31-31.
https://hdl.handle.net/21.15107/rcub_cer_7287
Gligorijević N, Minić S, Radomirović M, Lević S, Ćirković Veličković T, Nikolić M, Nedić O. Ligand binding to fibrinogen influences its structure and function. in Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia. 2021;:31-31.
https://hdl.handle.net/21.15107/rcub_cer_7287 .
Gligorijević, Nikola, Minić, Simeon, Radomirović, Mirjana, Lević, Steva, Ćirković Veličković, Tanja, Nikolić, Milan, Nedić, Olgica, "Ligand binding to fibrinogen influences its structure and function" in Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia (2021):31-31,
https://hdl.handle.net/21.15107/rcub_cer_7287 .

Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications

Šunderić, Miloš; Gligorijević, Nikola; Minić, Simeon; Nedić, Olgica; Nikolić, Milan

(Serbian Biochemical Society, 2021)

TY  - CONF
AU  - Šunderić, Miloš
AU  - Gligorijević, Nikola
AU  - Minić, Simeon
AU  - Nedić, Olgica
AU  - Nikolić, Milan
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7289
AB  - In this study, the interaction between phycocyanobilin (PCB)1, a bioactive chromophore of
blue-green algae Spirulina's phycobiliproteins, and alpha-2-macroglobulin (α2M)2, a
universal anti-proteinase, was investigated under simulated physiological conditions using
spectroscopic techniques and α2M activity assay. Using spectrofluorimetric measurements,
we found that α2M binds PCB with a moderate affinity, with a binding constant of 6.3×
105 M−1 at 25°C. The binding of PCB to α2M does not cause any significant change in the
secondary structure of the protein (circular dichroism measurements). Besides, PCB
protects α2M from structural oxidative alterations under AAPH-induced free radical
overproduction. Further, PCB binding effectively preserves α2M anti-proteinase activity.
Since α2M is involved in controlling the action of enzymes during the inflammatory
process, the protection that PCB expresses could indirectly influence the intensity and
direction of body response to impaired homeostasis, especially under oxidative stress.
PB  - Serbian Biochemical Society
C3  - Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia
T1  - Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications
SP  - 163
EP  - 163
UR  - https://hdl.handle.net/21.15107/rcub_cer_7289
ER  - 
@conference{
author = "Šunderić, Miloš and Gligorijević, Nikola and Minić, Simeon and Nedić, Olgica and Nikolić, Milan",
year = "2021",
abstract = "In this study, the interaction between phycocyanobilin (PCB)1, a bioactive chromophore of
blue-green algae Spirulina's phycobiliproteins, and alpha-2-macroglobulin (α2M)2, a
universal anti-proteinase, was investigated under simulated physiological conditions using
spectroscopic techniques and α2M activity assay. Using spectrofluorimetric measurements,
we found that α2M binds PCB with a moderate affinity, with a binding constant of 6.3×
105 M−1 at 25°C. The binding of PCB to α2M does not cause any significant change in the
secondary structure of the protein (circular dichroism measurements). Besides, PCB
protects α2M from structural oxidative alterations under AAPH-induced free radical
overproduction. Further, PCB binding effectively preserves α2M anti-proteinase activity.
Since α2M is involved in controlling the action of enzymes during the inflammatory
process, the protection that PCB expresses could indirectly influence the intensity and
direction of body response to impaired homeostasis, especially under oxidative stress.",
publisher = "Serbian Biochemical Society",
journal = "Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia",
title = "Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications",
pages = "163-163",
url = "https://hdl.handle.net/21.15107/rcub_cer_7289"
}
Šunderić, M., Gligorijević, N., Minić, S., Nedić, O.,& Nikolić, M.. (2021). Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications. in Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia
Serbian Biochemical Society., 163-163.
https://hdl.handle.net/21.15107/rcub_cer_7289
Šunderić M, Gligorijević N, Minić S, Nedić O, Nikolić M. Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications. in Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia. 2021;:163-163.
https://hdl.handle.net/21.15107/rcub_cer_7289 .
Šunderić, Miloš, Gligorijević, Nikola, Minić, Simeon, Nedić, Olgica, Nikolić, Milan, "Interaction between alpha-2-macroglobulin and phycocyanobilin – structural and physiological implications" in Serbian Biochemical Society Tenth Conference with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia (2021):163-163,
https://hdl.handle.net/21.15107/rcub_cer_7289 .

Ligand binding to fibrinogen influences its structure and function

Gligorijević, Nikola; Minić, Simeon; Radomirović, Mirjana; Lević, Steva M.; Nikolić, Milan; Ćirković-Veličković, Tanja; Nedić, Olgica

(University of Novi Sad - Faculty of Sciences, Department of Biology, 2021)

TY  - JOUR
AU  - Gligorijević, Nikola
AU  - Minić, Simeon
AU  - Radomirović, Mirjana
AU  - Lević, Steva M.
AU  - Nikolić, Milan
AU  - Ćirković-Veličković, Tanja
AU  - Nedić, Olgica
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7288
AB  - Fibrinogen is a plasma protein that is highly susceptible to oxidation. Because of this chemical modification, fibrinogen acquires thrombogenic characteristics under different pathophysiological conditions. Increased carbonyl content and reduced porosity impair the degradation of formed fibrin mediated by plasmin. Fibrinogen is capable of interacting with many proteins, ions, and small molecules. These interactions can modify the functions of this protein. The discovery of new binding partners that may protect fibrinogen from harmful oxidation and, thus, preserve its normal function is essential. Some of the newly detected interactions between fibrinogen and small, natural bioactive molecules, together with the influence of these interactions on the structure and function of fibrinogen, will be presented in this text.
PB  - University of Novi Sad - Faculty of Sciences, Department of Biology
T2  - Biologia Serbica
T1  - Ligand binding to fibrinogen influences its structure and function
VL  - 43
IS  - 1
SP  - 24
EP  - 31
DO  - 10.5281/zenodo.5512285
ER  - 
@article{
author = "Gligorijević, Nikola and Minić, Simeon and Radomirović, Mirjana and Lević, Steva M. and Nikolić, Milan and Ćirković-Veličković, Tanja and Nedić, Olgica",
year = "2021",
abstract = "Fibrinogen is a plasma protein that is highly susceptible to oxidation. Because of this chemical modification, fibrinogen acquires thrombogenic characteristics under different pathophysiological conditions. Increased carbonyl content and reduced porosity impair the degradation of formed fibrin mediated by plasmin. Fibrinogen is capable of interacting with many proteins, ions, and small molecules. These interactions can modify the functions of this protein. The discovery of new binding partners that may protect fibrinogen from harmful oxidation and, thus, preserve its normal function is essential. Some of the newly detected interactions between fibrinogen and small, natural bioactive molecules, together with the influence of these interactions on the structure and function of fibrinogen, will be presented in this text.",
publisher = "University of Novi Sad - Faculty of Sciences, Department of Biology",
journal = "Biologia Serbica",
title = "Ligand binding to fibrinogen influences its structure and function",
volume = "43",
number = "1",
pages = "24-31",
doi = "10.5281/zenodo.5512285"
}
Gligorijević, N., Minić, S., Radomirović, M., Lević, S. M., Nikolić, M., Ćirković-Veličković, T.,& Nedić, O.. (2021). Ligand binding to fibrinogen influences its structure and function. in Biologia Serbica
University of Novi Sad - Faculty of Sciences, Department of Biology., 43(1), 24-31.
https://doi.org/10.5281/zenodo.5512285
Gligorijević N, Minić S, Radomirović M, Lević SM, Nikolić M, Ćirković-Veličković T, Nedić O. Ligand binding to fibrinogen influences its structure and function. in Biologia Serbica. 2021;43(1):24-31.
doi:10.5281/zenodo.5512285 .
Gligorijević, Nikola, Minić, Simeon, Radomirović, Mirjana, Lević, Steva M., Nikolić, Milan, Ćirković-Veličković, Tanja, Nedić, Olgica, "Ligand binding to fibrinogen influences its structure and function" in Biologia Serbica, 43, no. 1 (2021):24-31,
https://doi.org/10.5281/zenodo.5512285 . .

Dihydro-alpha-lipoic acid binds and protects fibrinogen from oxidation and affects fibrin formation

Gligorijević, Nikola; Šukalović, Vladimir; Penezić, Ana; Nedić, Olgica

(Wiley, 2021)

TY  - CONF
AU  - Gligorijević, Nikola
AU  - Šukalović, Vladimir
AU  - Penezić, Ana
AU  - Nedić, Olgica
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7279
AB  - A reduced form of the alpha-lipoic acid, dihydro-alpha-lipoic
acid (DHLA) is a potent, naturally occurring antioxidant that is
found in higher amounts in plants like spinach, broccoli, potatoes,
tomatoes, carrots, beets and rice. DHLA can be consumed
as a food supplement as well, at doses up to 600 mg/day. DHLA
has an inhibitory effect on coagulation as it can reduce concentrations
of some coagulation factors. This study investigated a
direct interaction between DHLA and fibrinogen, the main protein
in coagulation and hemostasis. DHLA binds fibrinogen with
a moderate straight. Calculated constant from spectrofluorimetric
titration for DHLA/fibrinogen complex was 104 M -1. Fibrinogen
stability remains the same with only marginal structural changes
in its secondary structure favouring more ordered molecular
organisation upon DHLA binding, as determined by Fourier transform
infrared spectroscopy. Coagulation assay showed that
fibrinogen with bound DHLA forms fibrin with thicker fibres, as
measured by coagulation assay and is protected from oxidation to
a certain extent. Docking analysis showed that DHLA may bind
fibrinogen in its D regions, which are directly involved in the fibrin
formation. Obtained results support beneficial effects of DHLA
on fibrinogen and consequently on coagulation process, suggesting
that DHLA supplementation may be indicated for persons with
an increased risk of developing thrombotic complications, particularly
those whose fibrin is characterised by increased oxidative
modification and formation of thinner and less porous fibres.
Although further investigation is needed, our results suggest that
DHLA in complex with fibrinogen can be located at the site of
injury where it may exert antioxidant effects.
PB  - Wiley
C3  - FEBS OpenBio
T1  - Dihydro-alpha-lipoic acid binds and protects fibrinogen from oxidation and affects fibrin formation
VL  - 11
IS  - Supplement 1
SP  - 182
EP  - 183
DO  - 10.1002/2211-5463.13205
ER  - 
@conference{
author = "Gligorijević, Nikola and Šukalović, Vladimir and Penezić, Ana and Nedić, Olgica",
year = "2021",
abstract = "A reduced form of the alpha-lipoic acid, dihydro-alpha-lipoic
acid (DHLA) is a potent, naturally occurring antioxidant that is
found in higher amounts in plants like spinach, broccoli, potatoes,
tomatoes, carrots, beets and rice. DHLA can be consumed
as a food supplement as well, at doses up to 600 mg/day. DHLA
has an inhibitory effect on coagulation as it can reduce concentrations
of some coagulation factors. This study investigated a
direct interaction between DHLA and fibrinogen, the main protein
in coagulation and hemostasis. DHLA binds fibrinogen with
a moderate straight. Calculated constant from spectrofluorimetric
titration for DHLA/fibrinogen complex was 104 M -1. Fibrinogen
stability remains the same with only marginal structural changes
in its secondary structure favouring more ordered molecular
organisation upon DHLA binding, as determined by Fourier transform
infrared spectroscopy. Coagulation assay showed that
fibrinogen with bound DHLA forms fibrin with thicker fibres, as
measured by coagulation assay and is protected from oxidation to
a certain extent. Docking analysis showed that DHLA may bind
fibrinogen in its D regions, which are directly involved in the fibrin
formation. Obtained results support beneficial effects of DHLA
on fibrinogen and consequently on coagulation process, suggesting
that DHLA supplementation may be indicated for persons with
an increased risk of developing thrombotic complications, particularly
those whose fibrin is characterised by increased oxidative
modification and formation of thinner and less porous fibres.
Although further investigation is needed, our results suggest that
DHLA in complex with fibrinogen can be located at the site of
injury where it may exert antioxidant effects.",
publisher = "Wiley",
journal = "FEBS OpenBio",
title = "Dihydro-alpha-lipoic acid binds and protects fibrinogen from oxidation and affects fibrin formation",
volume = "11",
number = "Supplement 1",
pages = "182-183",
doi = "10.1002/2211-5463.13205"
}
Gligorijević, N., Šukalović, V., Penezić, A.,& Nedić, O.. (2021). Dihydro-alpha-lipoic acid binds and protects fibrinogen from oxidation and affects fibrin formation. in FEBS OpenBio
Wiley., 11(Supplement 1), 182-183.
https://doi.org/10.1002/2211-5463.13205
Gligorijević N, Šukalović V, Penezić A, Nedić O. Dihydro-alpha-lipoic acid binds and protects fibrinogen from oxidation and affects fibrin formation. in FEBS OpenBio. 2021;11(Supplement 1):182-183.
doi:10.1002/2211-5463.13205 .
Gligorijević, Nikola, Šukalović, Vladimir, Penezić, Ana, Nedić, Olgica, "Dihydro-alpha-lipoic acid binds and protects fibrinogen from oxidation and affects fibrin formation" in FEBS OpenBio, 11, no. Supplement 1 (2021):182-183,
https://doi.org/10.1002/2211-5463.13205 . .
8

Resveratrol and fibrinogen interactions

Gligorijević, Nikola; Radomirović, Mirjana; Rajković, Andreja; Nedić, Olgica; Ćirković Veličković, Tanja

(University of Belgrade - Faculty of Chemistry, 2021)

TY  - CONF
AU  - Gligorijević, Nikola
AU  - Radomirović, Mirjana
AU  - Rajković, Andreja
AU  - Nedić, Olgica
AU  - Ćirković Veličković, Tanja
PY  - 2021
UR  - https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e5deeb546e&appId=PPGMS
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7284
AB  - The French paradox describes a lower incidence of cardiovascular problems despite a high intake of
saturated fats. This phenomenon was associated with higher consumption of red wine, only to be later discovered that the presence of several antioxidants, including resveratrol, are responsible for it. We investigated if resveratrol has a more direct role in protection from harmful oxidation and development of thrombosis, presumably through binding to important proteins of the blood coagulation process. Spectrofluorimetric analysis demonstrated binding of resveratrol to fibrinogen, the main protein in the coagulation process, which also has an important application as a food additive in making of fibrin gels. Various spectroscopic methods have demonstrated that binding of
resveratrol does not unfold or destabilize fibrinogen since both near and far-UV CD spectra as well as its melting temperature remained unchanged. A mutuallyprotective effect against the free radical-
induced oxidation of resveratrol and fibrinogen was found. The presence of fibrinogen caused a very
small masking effect of the antioxidative potential of resveratrol, measured by a reduction of
hexacyanoferrate (III), while greatly increasing its solubility in an aqueous environment, thus increasing potential bioavailability and activity of resveratrol in circulation. By direct interaction and protection of fibrinogen, resveratrol may serve as an important antioxidant for prevention of
thrombosis. The antioxidative effect of resveratrol may also protect and thus keep the desired characteristics of fibrinogen during the application of this protein as a food additive.
PB  - University of Belgrade - Faculty of Chemistry
C3  - FoodEnTwin Symposium “Novel analytical approaches in food and environmental sciences”, Book of Abstracts, 16th-18th June, 2021, Belgrade, Serbia
T1  - Resveratrol and fibrinogen interactions
SP  - 15
EP  - 15
UR  - https://hdl.handle.net/21.15107/rcub_cer_7284
ER  - 
@conference{
author = "Gligorijević, Nikola and Radomirović, Mirjana and Rajković, Andreja and Nedić, Olgica and Ćirković Veličković, Tanja",
year = "2021",
abstract = "The French paradox describes a lower incidence of cardiovascular problems despite a high intake of
saturated fats. This phenomenon was associated with higher consumption of red wine, only to be later discovered that the presence of several antioxidants, including resveratrol, are responsible for it. We investigated if resveratrol has a more direct role in protection from harmful oxidation and development of thrombosis, presumably through binding to important proteins of the blood coagulation process. Spectrofluorimetric analysis demonstrated binding of resveratrol to fibrinogen, the main protein in the coagulation process, which also has an important application as a food additive in making of fibrin gels. Various spectroscopic methods have demonstrated that binding of
resveratrol does not unfold or destabilize fibrinogen since both near and far-UV CD spectra as well as its melting temperature remained unchanged. A mutuallyprotective effect against the free radical-
induced oxidation of resveratrol and fibrinogen was found. The presence of fibrinogen caused a very
small masking effect of the antioxidative potential of resveratrol, measured by a reduction of
hexacyanoferrate (III), while greatly increasing its solubility in an aqueous environment, thus increasing potential bioavailability and activity of resveratrol in circulation. By direct interaction and protection of fibrinogen, resveratrol may serve as an important antioxidant for prevention of
thrombosis. The antioxidative effect of resveratrol may also protect and thus keep the desired characteristics of fibrinogen during the application of this protein as a food additive.",
publisher = "University of Belgrade - Faculty of Chemistry",
journal = "FoodEnTwin Symposium “Novel analytical approaches in food and environmental sciences”, Book of Abstracts, 16th-18th June, 2021, Belgrade, Serbia",
title = "Resveratrol and fibrinogen interactions",
pages = "15-15",
url = "https://hdl.handle.net/21.15107/rcub_cer_7284"
}
Gligorijević, N., Radomirović, M., Rajković, A., Nedić, O.,& Ćirković Veličković, T.. (2021). Resveratrol and fibrinogen interactions. in FoodEnTwin Symposium “Novel analytical approaches in food and environmental sciences”, Book of Abstracts, 16th-18th June, 2021, Belgrade, Serbia
University of Belgrade - Faculty of Chemistry., 15-15.
https://hdl.handle.net/21.15107/rcub_cer_7284
Gligorijević N, Radomirović M, Rajković A, Nedić O, Ćirković Veličković T. Resveratrol and fibrinogen interactions. in FoodEnTwin Symposium “Novel analytical approaches in food and environmental sciences”, Book of Abstracts, 16th-18th June, 2021, Belgrade, Serbia. 2021;:15-15.
https://hdl.handle.net/21.15107/rcub_cer_7284 .
Gligorijević, Nikola, Radomirović, Mirjana, Rajković, Andreja, Nedić, Olgica, Ćirković Veličković, Tanja, "Resveratrol and fibrinogen interactions" in FoodEnTwin Symposium “Novel analytical approaches in food and environmental sciences”, Book of Abstracts, 16th-18th June, 2021, Belgrade, Serbia (2021):15-15,
https://hdl.handle.net/21.15107/rcub_cer_7284 .