TY  - CONF
AU  - Đukić-Vuković, Aleksandra
AU  - Grbić, Jovana
AU  - Mladenović, Dragana
AU  - Pavlović, Stefan
AU  - Lazović, Saša
AU  - Mojović, Ljiljana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7400
AB  - We combined cold plasma treatment (CPT) with water, ethanol, Fenton and hydrogen peroxide media under acidic and basic conditions for treatment of corn stalks as significant lignocellulose agri-industrial waste. Chemical properties of treated samples were analyzed by FTIR and mercury porosimetry, acetyl bromide soluble lignin content was determined by spectrophotometric methods, while carbohydrate 
fractions were subjected to enzymatic hydrolysis followed by spectrophotometric analysis to assess its potential for fermentations. Lignin fraction which is often neglected (Ponnusamy et al., 2019) was also examined as a source of antioxidants.
PB  - National Technical University of Athens
C3  - 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece
T1  - Corn stalks as a lignocellulose substrate for biorefinery applications
UR  - https://hdl.handle.net/21.15107/rcub_cer_7400
ER  - 

@conference{
author = "Đukić-Vuković, Aleksandra and Grbić, Jovana and Mladenović, Dragana and Pavlović, Stefan and Lazović, Saša and Mojović, Ljiljana",
year = "2023",
abstract = "We combined cold plasma treatment (CPT) with water, ethanol, Fenton and hydrogen peroxide media under acidic and basic conditions for treatment of corn stalks as significant lignocellulose agri-industrial waste. Chemical properties of treated samples were analyzed by FTIR and mercury porosimetry, acetyl bromide soluble lignin content was determined by spectrophotometric methods, while carbohydrate 
fractions were subjected to enzymatic hydrolysis followed by spectrophotometric analysis to assess its potential for fermentations. Lignin fraction which is often neglected (Ponnusamy et al., 2019) was also examined as a source of antioxidants.",
publisher = "National Technical University of Athens",
journal = "10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece",
title = "Corn stalks as a lignocellulose substrate for biorefinery applications",
url = "https://hdl.handle.net/21.15107/rcub_cer_7400"
}

Đukić-Vuković, A., Grbić, J., Mladenović, D., Pavlović, S., Lazović, S.,& Mojović, L.. (2023). Corn stalks as a lignocellulose substrate for biorefinery applications. in 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece
National Technical University of Athens..
https://hdl.handle.net/21.15107/rcub_cer_7400

Đukić-Vuković A, Grbić J, Mladenović D, Pavlović S, Lazović S, Mojović L. Corn stalks as a lignocellulose substrate for biorefinery applications. in 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_7400 .

Đukić-Vuković, Aleksandra, Grbić, Jovana, Mladenović, Dragana, Pavlović, Stefan, Lazović, Saša, Mojović, Ljiljana, "Corn stalks as a lignocellulose substrate for biorefinery applications" in 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece (2023),
https://hdl.handle.net/21.15107/rcub_cer_7400 .

TY  - JOUR
AU  - Grbić, Jovana
AU  - Mladenović, Dragana
AU  - Pavlović, Stefan
AU  - Lazović, Saša
AU  - Mojović, Ljiljana
AU  - Đukić-Vuković, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5650
AB  - The depletion of fossil fuel reserves and severe environmental damage, resulting in climate change and global warming lead to a necessary shift to alternative renewable resources. Lignocellulose is a valuable feedstock for biorefineries, but its conversion is hindered by the limitations of conventional pretreatments lacking selectivity. This step should also be cost-effective and sustainable. In this paper, combined advanced oxidation techniques were applied for the treatment of corn stalks as a pretreatment for enzymatic hydrolysis. Their effect on delignification and cellulose digestibility was monitored. The combined non-thermal plasma/Fenton treatment appears to be suitable for breaking the complex lignocellulose structure, with a lignin content decrease of 39%. This treatment enhanced carbohydrate hydrolysis, resulting in 2.25 times increase in hexose yield, compared to the untreated sample. Long-term plasma treatment positively affected the textural properties, total porosity, and pore size diameter, of lignocellulose biomass. It enables the creation of materials with a stable system of pores and channels, for the unhindered diffusion of large organic molecules such as enzymes. Additionally, a combination of plasma treatment with Fenton reaction increased selectivity towards lignin degradation in comparison to independently applied Fenton treatment. This could be a significant advantage for a bottleneck in the current valorization of biomass.
PB  - Elsevier B.V.
T2  - Sustainable Chemistry and Pharmacy
T1  - Advanced oxidation processes in the treatment of corn stalks
VL  - 32
SP  - 100962
DO  - 10.1016/j.scp.2022.100962
ER  - 

@article{
author = "Grbić, Jovana and Mladenović, Dragana and Pavlović, Stefan and Lazović, Saša and Mojović, Ljiljana and Đukić-Vuković, Aleksandra",
year = "2023",
abstract = "The depletion of fossil fuel reserves and severe environmental damage, resulting in climate change and global warming lead to a necessary shift to alternative renewable resources. Lignocellulose is a valuable feedstock for biorefineries, but its conversion is hindered by the limitations of conventional pretreatments lacking selectivity. This step should also be cost-effective and sustainable. In this paper, combined advanced oxidation techniques were applied for the treatment of corn stalks as a pretreatment for enzymatic hydrolysis. Their effect on delignification and cellulose digestibility was monitored. The combined non-thermal plasma/Fenton treatment appears to be suitable for breaking the complex lignocellulose structure, with a lignin content decrease of 39%. This treatment enhanced carbohydrate hydrolysis, resulting in 2.25 times increase in hexose yield, compared to the untreated sample. Long-term plasma treatment positively affected the textural properties, total porosity, and pore size diameter, of lignocellulose biomass. It enables the creation of materials with a stable system of pores and channels, for the unhindered diffusion of large organic molecules such as enzymes. Additionally, a combination of plasma treatment with Fenton reaction increased selectivity towards lignin degradation in comparison to independently applied Fenton treatment. This could be a significant advantage for a bottleneck in the current valorization of biomass.",
publisher = "Elsevier B.V.",
journal = "Sustainable Chemistry and Pharmacy",
title = "Advanced oxidation processes in the treatment of corn stalks",
volume = "32",
pages = "100962",
doi = "10.1016/j.scp.2022.100962"
}

Grbić, J., Mladenović, D., Pavlović, S., Lazović, S., Mojović, L.,& Đukić-Vuković, A.. (2023). Advanced oxidation processes in the treatment of corn stalks. in Sustainable Chemistry and Pharmacy
Elsevier B.V.., 32, 100962.
https://doi.org/10.1016/j.scp.2022.100962

Grbić J, Mladenović D, Pavlović S, Lazović S, Mojović L, Đukić-Vuković A. Advanced oxidation processes in the treatment of corn stalks. in Sustainable Chemistry and Pharmacy. 2023;32:100962.
doi:10.1016/j.scp.2022.100962 .

Grbić, Jovana, Mladenović, Dragana, Pavlović, Stefan, Lazović, Saša, Mojović, Ljiljana, Đukić-Vuković, Aleksandra, "Advanced oxidation processes in the treatment of corn stalks" in Sustainable Chemistry and Pharmacy, 32 (2023):100962,
https://doi.org/10.1016/j.scp.2022.100962 . .

TY  - CONF
AU  - Ljubić, Verica
AU  - Cvetković, Slobodan
AU  - Perendija, Jovana
AU  - Djukić-Vuković, Aleksandra
AU  - Popović, Mina
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6884
AB  - Lactic acid bacteria synthesize metabolites that can be used in pharmaceutical, food, water, and dairy industries. Hence, in this study, a novel exopolysaccharide was extracted and isolated from the probiotic strain L. reuteri B2, assessed on possible application as a biosorbent for removal of heavy metals from the contaminated water. Novel exopolysaccharide was characterized using SEM, and TGA/DTG analysis. Our hypothesis was that if this EPS can be used as potentinal biomaterial, than its application for nickel removal from the contaminated water can be performed. After biosorption experiments, the removal efficiency of Ni2+ from the aqueous solution was 92.96%. According to these results, this exopolysaccharide can be considered as a very promising biomaterial for application in different industries, from pharmacy to treatments of contaminted water
AB  - Bakterije mlečne kiseline sintetišu metabolite koji se mogu koristiti u farmaceutskoj, prehrambenoj,
vodenoj i mlečnoj industriji. S toga, u ovoj studiji je ekstrahovan i izolovan novi egzopolisaharid iz
probiotičkog soja L. reuteri B2, koji je testiran za moguću primenu kao biosorbent za uklanjanje
teških metala iz kontaminirane vode. Novi egzopolisaharid je okarakterisan korišćenjem SEM i
TGA/DTG analize. Naša hipoteza je bila da ako se ovaj EPS može koristiti kao potencijalni
biomaterijal, onda se može primeniti za uklanjanje nikla iz kontaminirane vode. Nakon
eksperimenata biosorpcije, efikasnost uklanjanja Ni2+ jona iz vodenog rastvora bila je 92,96%.
Prema ovim rezultatima, ovaj egzopolisaharid se može smatrati veoma perspektivnim biomaterijalom za primenu u različitim industrijama, od farmacije do tretmana kontaminirane vode
PB  - Belgrade : Serbian Society of Corrosion and Materials  Protection UISKOZAM / Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare
T1  - Extraction of novel exopolysaccharide as potential biosorbent for removal of Ni2+ ions from contaminated water
SP  - INVITED-52
EP  - INVITED-59
UR  - https://hdl.handle.net/21.15107/rcub_cer_6884
ER  - 

@conference{
author = "Ljubić, Verica and Cvetković, Slobodan and Perendija, Jovana and Djukić-Vuković, Aleksandra and Popović, Mina",
year = "2022",
abstract = "Lactic acid bacteria synthesize metabolites that can be used in pharmaceutical, food, water, and dairy industries. Hence, in this study, a novel exopolysaccharide was extracted and isolated from the probiotic strain L. reuteri B2, assessed on possible application as a biosorbent for removal of heavy metals from the contaminated water. Novel exopolysaccharide was characterized using SEM, and TGA/DTG analysis. Our hypothesis was that if this EPS can be used as potentinal biomaterial, than its application for nickel removal from the contaminated water can be performed. After biosorption experiments, the removal efficiency of Ni2+ from the aqueous solution was 92.96%. According to these results, this exopolysaccharide can be considered as a very promising biomaterial for application in different industries, from pharmacy to treatments of contaminted water, Bakterije mlečne kiseline sintetišu metabolite koji se mogu koristiti u farmaceutskoj, prehrambenoj,
vodenoj i mlečnoj industriji. S toga, u ovoj studiji je ekstrahovan i izolovan novi egzopolisaharid iz
probiotičkog soja L. reuteri B2, koji je testiran za moguću primenu kao biosorbent za uklanjanje
teških metala iz kontaminirane vode. Novi egzopolisaharid je okarakterisan korišćenjem SEM i
TGA/DTG analize. Naša hipoteza je bila da ako se ovaj EPS može koristiti kao potencijalni
biomaterijal, onda se može primeniti za uklanjanje nikla iz kontaminirane vode. Nakon
eksperimenata biosorpcije, efikasnost uklanjanja Ni2+ jona iz vodenog rastvora bila je 92,96%.
Prema ovim rezultatima, ovaj egzopolisaharid se može smatrati veoma perspektivnim biomaterijalom za primenu u različitim industrijama, od farmacije do tretmana kontaminirane vode",
publisher = "Belgrade : Serbian Society of Corrosion and Materials  Protection UISKOZAM / Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare",
title = "Extraction of novel exopolysaccharide as potential biosorbent for removal of Ni2+ ions from contaminated water",
pages = "INVITED-52-INVITED-59",
url = "https://hdl.handle.net/21.15107/rcub_cer_6884"
}

Ljubić, V., Cvetković, S., Perendija, J., Djukić-Vuković, A.,& Popović, M.. (2022). Extraction of novel exopolysaccharide as potential biosorbent for removal of Ni2+ ions from contaminated water. in Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare
Belgrade : Serbian Society of Corrosion and Materials  Protection UISKOZAM / Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., INVITED-52-INVITED-59.
https://hdl.handle.net/21.15107/rcub_cer_6884

Ljubić V, Cvetković S, Perendija J, Djukić-Vuković A, Popović M. Extraction of novel exopolysaccharide as potential biosorbent for removal of Ni2+ ions from contaminated water. in Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare. 2022;:INVITED-52-INVITED-59.
https://hdl.handle.net/21.15107/rcub_cer_6884 .

Ljubić, Verica, Cvetković, Slobodan, Perendija, Jovana, Djukić-Vuković, Aleksandra, Popović, Mina, "Extraction of novel exopolysaccharide as potential biosorbent for removal of Ni2+ ions from contaminated water" in Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare (2022):INVITED-52-INVITED-59,
https://hdl.handle.net/21.15107/rcub_cer_6884 .

TY  - JOUR
AU  - Miljković, Miona G.
AU  - Davidović, Slađana Z.
AU  - Djukić˗Vuković, Aleksandra P.
AU  - Ilić, Mila
AU  - Simović, Milica B.
AU  - Rajilić-Stojanović, Mirjana D.
AU  - Dimitrijević-Branković, Suzana I.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4790
AB  - Dextransucrase (DS) is a glucosyltransferase (E. C. 2.4.1.5) that catalyzes the transfer of glucosyl residues from sucrose to dextran polymer and liberates fructose. This enzyme isassociated with a wide application range of dextran and oligosaccharides. DS production by Leuconostoc mesenteroidesT3 was optimized using a Central Composite Design under the Response Surface Methodology. Three variables were chosen for optimization: distillery stillage, sucrose and manganese concentration. The results showed that sucrose and manganese concentrations had a positive linear effect on DS production while all variable interactions (stillage-manganese, stillage-sucrose, and sucrose-manganese) had significant influences on the DS production. The maximal DS yield of 3.391±0.131 U cm-3, was obtained in the medium with 64.33 % distillery stillage concentration, 5.30% sucrose concentration and 0.022 % manganese concentration. Our study revealed the potential of distillery stillage combined with sugar beet molasses, supplemented with sucrose and manganese to be employed as a valuable medium growth for lactic acid bacteria and production of DS. Also, taking into consideration the origin of the substrates, utilization of industrial by-products in this way has a great environmental relevance and is in accordance with circular economy.
AB  - Dekstransaharaza (DS) je glukoziltransferaza (E. C. 2.4.1.5.) koja katalizuje prenos ostataka glukoze iz saharoze u polimer dekstrana, pri čemu se oslobađa fruktoza. Ovaj enzim je povezan sa širokim spektrom primene dekstrana i oligosaharida. Proizvodnja dekstransaharaze pomoću bakterije Leuconostoc mesenteroides T3 optimizovana je metodom odzivnih površina korišćenjem centralnog kompozitnog dizajna. Za optimizaciju su izabrane tri promenljive: koncentracija džibre, koncentracija saharoze i koncentracija jona mangana. Rezultati su pokazali da koncentracije saharoze i jona mangana imaju pozitivan linearni efekat na proizvodnju DS dok su sve interakcije (džibra-Mn2+, džibra-saharoza i saharoza-Mn2+) imale značajan uticaj na proizvodnju DS. Na osnovu eksperimentalnih podataka i numeričke optimizacije, dobijen je maksimalni prinos DS od 3.391 ± 0.131 U cm-3 u podlozi sa 64.33 % džibre, 5.30 % saharoze i 0.022 % jona mangana. Naše istraživanje otkrilo je da se džibra u kombinaciji sa melasom šećerne repe kao i saharozom i dodatkom jona mangana može koristiti kao dragocena hranjiva komponenta za rast bakterija mlečne kiseline i proizvodnju DS. Takođe, uzimajući u obzir poreklo supstrata, upotreba industrijskih nusproizvoda na ovaj način ima veliku ekološku važnost.
PB  - Belgrade : Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Utilization of agro-industrial by-products as substrates for dextransucrase production by leuconostoc mesenteroides t3: Process optimization using response surface methodology
T1  - Iskorišćenje nus-proizvoda agro-industrije za proizvodnju dekstransaharaze pomoću bakterije leuconostoc mesenteroides t3: Optimizacija procesa metodom odzivnih površina
VL  - 75
IS  - 3
SP  - 135
EP  - 146
DO  - 10.2298/HEMIND200710015M
ER  - 

@article{
author = "Miljković, Miona G. and Davidović, Slađana Z. and Djukić˗Vuković, Aleksandra P. and Ilić, Mila and Simović, Milica B. and Rajilić-Stojanović, Mirjana D. and Dimitrijević-Branković, Suzana I.",
year = "2021",
abstract = "Dextransucrase (DS) is a glucosyltransferase (E. C. 2.4.1.5) that catalyzes the transfer of glucosyl residues from sucrose to dextran polymer and liberates fructose. This enzyme isassociated with a wide application range of dextran and oligosaccharides. DS production by Leuconostoc mesenteroidesT3 was optimized using a Central Composite Design under the Response Surface Methodology. Three variables were chosen for optimization: distillery stillage, sucrose and manganese concentration. The results showed that sucrose and manganese concentrations had a positive linear effect on DS production while all variable interactions (stillage-manganese, stillage-sucrose, and sucrose-manganese) had significant influences on the DS production. The maximal DS yield of 3.391±0.131 U cm-3, was obtained in the medium with 64.33 % distillery stillage concentration, 5.30% sucrose concentration and 0.022 % manganese concentration. Our study revealed the potential of distillery stillage combined with sugar beet molasses, supplemented with sucrose and manganese to be employed as a valuable medium growth for lactic acid bacteria and production of DS. Also, taking into consideration the origin of the substrates, utilization of industrial by-products in this way has a great environmental relevance and is in accordance with circular economy., Dekstransaharaza (DS) je glukoziltransferaza (E. C. 2.4.1.5.) koja katalizuje prenos ostataka glukoze iz saharoze u polimer dekstrana, pri čemu se oslobađa fruktoza. Ovaj enzim je povezan sa širokim spektrom primene dekstrana i oligosaharida. Proizvodnja dekstransaharaze pomoću bakterije Leuconostoc mesenteroides T3 optimizovana je metodom odzivnih površina korišćenjem centralnog kompozitnog dizajna. Za optimizaciju su izabrane tri promenljive: koncentracija džibre, koncentracija saharoze i koncentracija jona mangana. Rezultati su pokazali da koncentracije saharoze i jona mangana imaju pozitivan linearni efekat na proizvodnju DS dok su sve interakcije (džibra-Mn2+, džibra-saharoza i saharoza-Mn2+) imale značajan uticaj na proizvodnju DS. Na osnovu eksperimentalnih podataka i numeričke optimizacije, dobijen je maksimalni prinos DS od 3.391 ± 0.131 U cm-3 u podlozi sa 64.33 % džibre, 5.30 % saharoze i 0.022 % jona mangana. Naše istraživanje otkrilo je da se džibra u kombinaciji sa melasom šećerne repe kao i saharozom i dodatkom jona mangana može koristiti kao dragocena hranjiva komponenta za rast bakterija mlečne kiseline i proizvodnju DS. Takođe, uzimajući u obzir poreklo supstrata, upotreba industrijskih nusproizvoda na ovaj način ima veliku ekološku važnost.",
publisher = "Belgrade : Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Utilization of agro-industrial by-products as substrates for dextransucrase production by leuconostoc mesenteroides t3: Process optimization using response surface methodology, Iskorišćenje nus-proizvoda agro-industrije za proizvodnju dekstransaharaze pomoću bakterije leuconostoc mesenteroides t3: Optimizacija procesa metodom odzivnih površina",
volume = "75",
number = "3",
pages = "135-146",
doi = "10.2298/HEMIND200710015M"
}

Miljković, M. G., Davidović, S. Z., Djukić˗Vuković, A. P., Ilić, M., Simović, M. B., Rajilić-Stojanović, M. D.,& Dimitrijević-Branković, S. I.. (2021). Utilization of agro-industrial by-products as substrates for dextransucrase production by leuconostoc mesenteroides t3: Process optimization using response surface methodology. in Hemijska industrija
Belgrade : Association of the Chemical Engineers of Serbia., 75(3), 135-146.
https://doi.org/10.2298/HEMIND200710015M

Miljković MG, Davidović SZ, Djukić˗Vuković AP, Ilić M, Simović MB, Rajilić-Stojanović MD, Dimitrijević-Branković SI. Utilization of agro-industrial by-products as substrates for dextransucrase production by leuconostoc mesenteroides t3: Process optimization using response surface methodology. in Hemijska industrija. 2021;75(3):135-146.
doi:10.2298/HEMIND200710015M .

Miljković, Miona G., Davidović, Slađana Z., Djukić˗Vuković, Aleksandra P., Ilić, Mila, Simović, Milica B., Rajilić-Stojanović, Mirjana D., Dimitrijević-Branković, Suzana I., "Utilization of agro-industrial by-products as substrates for dextransucrase production by leuconostoc mesenteroides t3: Process optimization using response surface methodology" in Hemijska industrija, 75, no. 3 (2021):135-146,
https://doi.org/10.2298/HEMIND200710015M . .