TY  - JOUR
AU  - Gojgić-Cvijović, Gordana
AU  - Jakovljević, Dragica
AU  - Živković, Ljiljana
AU  - Ćosović, Vladan
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Ivana
AU  - Maravić, Nikola
AU  - Dokić, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11023
AB  - In this study, levan from Bacillus licheniformis NS032 was modified in an aqueous medium by octenyl succinic anhydride (OSA), and the properties of the obtained derivatives were studied. The maximum efficiency in the synthesis reaction was achieved at 40 °C and a polysaccharide slurry concentration of 30 %. Increasing the reagent concentration (2–10 %) led to an increase in the degree of substitution (0.016–0.048). Structures of derivatives were confirmed by FTIR and NMR. Scanning electronic microscopy, thermogravimetry, and dynamic light scattering analyses showed that the derivatives with degrees of substitution of 0.025 and 0.036 retained levan's porous structure and thermostability and showed better colloidal stability than the native polysaccharide. The intrinsic viscosity of derivatives increased upon modification, while the surface tension of the 1 % solution was lowered to 61 mN/m. Oil-in-water emulsions prepared with sunflower oil (10 % and 20 %) by mechanical homogenization and 2 and 10 % derivatives in the continuous phase showed mean oil droplet sizes of 106–195 μm, while the distribution curves exhibited bimodal character. The studied derivatives have a good capacity to stabilize emulsions, as they have a creaming index ranging from 73 % to 94 %. The OSA-modified levans could have potential applications in new formulations of emulsion-based systems.
T2  - International Journal of Biological Macromolecules
T1  - Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties
VL  - 242
SP  - 124837
DO  - 10.1016/j.ijbiomac.2023.124837
ER  - 

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

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

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

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

TY  - JOUR
AU  - Kop, Tatjana
AU  - Jakovljević, Dragica
AU  - Živković, Ljiljana
AU  - Žekić, Andrijana
AU  - Beškoski, Vladimir P.
AU  - Milić, Dragana
AU  - Gojgić-Cvijović, Gordana
AU  - Bjelaković, Mira
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8789
AB  - An efficient encapsulation of the fullerene into two hydrophobized and one native polysaccharide provided water soluble supramolecular hybrids. After covalent modification of polysaccharides by cholesterol, noncovalent hybrids were prepared by a three-step procedure, including mixing of individual aqueous solutions of hydrophobized, as well as native sugar with solution of the fullerene in pyridine, dialysis and lyophilization. Although the degree of the fullerene incorporation into hydrophobized substrates, cholesterol-levan and cholesterol-pullulan, was lower in comparison to the native polysaccharide levan, hydrophobization provided nanoparticles with improved properties. The particle size distribution, studied by dynamic light scattering and scanning electron microscopy revealed formation of moderately polydisperse aggregates, with the diameter contraction in comparison to the corresponding free polysaccharide, especially in the case of hydrophobized substrates. The morphological examination, done by scanning electron microscopy indicated the self-organization of the fullerene-native polysaccharide to round individual structures, while fullerene-hydrophobized polysaccharide hybrids tend to form networks. The antioxidant activity of the synthesized polysaccharide-C60 noncovalent hybrids versus starting polysaccharides was investigated by the DPPH radical scavenging and the β-carotene-linoleic acid bleaching methods. In all three complexes, the radical scavenging ability of the fullerene remained preserved, and a positive effect of levan hydrophobization was observed.
T2  - European Polymer Journal
T1  - Polysaccharide-fullerene supramolecular hybrids: Synthesis, characterization and antioxidant activity
VL  - 123
SP  - 109461
DO  - 10.1016/j.eurpolymj.2019.109461
ER  - 

@article{
author = "Kop, Tatjana and Jakovljević, Dragica and Živković, Ljiljana and Žekić, Andrijana and Beškoski, Vladimir P. and Milić, Dragana and Gojgić-Cvijović, Gordana and Bjelaković, Mira",
year = "2020",
abstract = "An efficient encapsulation of the fullerene into two hydrophobized and one native polysaccharide provided water soluble supramolecular hybrids. After covalent modification of polysaccharides by cholesterol, noncovalent hybrids were prepared by a three-step procedure, including mixing of individual aqueous solutions of hydrophobized, as well as native sugar with solution of the fullerene in pyridine, dialysis and lyophilization. Although the degree of the fullerene incorporation into hydrophobized substrates, cholesterol-levan and cholesterol-pullulan, was lower in comparison to the native polysaccharide levan, hydrophobization provided nanoparticles with improved properties. The particle size distribution, studied by dynamic light scattering and scanning electron microscopy revealed formation of moderately polydisperse aggregates, with the diameter contraction in comparison to the corresponding free polysaccharide, especially in the case of hydrophobized substrates. The morphological examination, done by scanning electron microscopy indicated the self-organization of the fullerene-native polysaccharide to round individual structures, while fullerene-hydrophobized polysaccharide hybrids tend to form networks. The antioxidant activity of the synthesized polysaccharide-C60 noncovalent hybrids versus starting polysaccharides was investigated by the DPPH radical scavenging and the β-carotene-linoleic acid bleaching methods. In all three complexes, the radical scavenging ability of the fullerene remained preserved, and a positive effect of levan hydrophobization was observed.",
journal = "European Polymer Journal",
title = "Polysaccharide-fullerene supramolecular hybrids: Synthesis, characterization and antioxidant activity",
volume = "123",
pages = "109461",
doi = "10.1016/j.eurpolymj.2019.109461"
}

Kop, T., Jakovljević, D., Živković, L., Žekić, A., Beškoski, V. P., Milić, D., Gojgić-Cvijović, G.,& Bjelaković, M.. (2020). Polysaccharide-fullerene supramolecular hybrids: Synthesis, characterization and antioxidant activity. in European Polymer Journal, 123, 109461.
https://doi.org/10.1016/j.eurpolymj.2019.109461

Kop T, Jakovljević D, Živković L, Žekić A, Beškoski VP, Milić D, Gojgić-Cvijović G, Bjelaković M. Polysaccharide-fullerene supramolecular hybrids: Synthesis, characterization and antioxidant activity. in European Polymer Journal. 2020;123:109461.
doi:10.1016/j.eurpolymj.2019.109461 .

Kop, Tatjana, Jakovljević, Dragica, Živković, Ljiljana, Žekić, Andrijana, Beškoski, Vladimir P., Milić, Dragana, Gojgić-Cvijović, Gordana, Bjelaković, Mira, "Polysaccharide-fullerene supramolecular hybrids: Synthesis, characterization and antioxidant activity" in European Polymer Journal, 123 (2020):109461,
https://doi.org/10.1016/j.eurpolymj.2019.109461 . .

TY  - JOUR
AU  - Milenković, Ivana
AU  - Radotić, Ksenija
AU  - Matović, Branko
AU  - Prekajski, Marija D.
AU  - Živković, Ljiljana
AU  - Jakovljević, Dragica
AU  - Gojgić-Cvijović, Gordana
AU  - Beškoski, Vladimir P.
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51391800031M
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7764
AB  - Cerium oxide (CeO2) nanoparticles (CONPs) are interesting biomaterials with various applications in biomedicine, cosmetics and the pharmaceutical industry, but with limited practical application because of their low stability in aqueous media. The aim of this study was to obtain CONPs with increased stability by coating the particles. Microbial exopolysaccharides (levan, pullulan) and glucose were used to prepare CONPs under different synthesis conditions. Coating was attempted by adding the carbohydrates during (direct coating) or after (subsequent coating) the synthesis of CONPs. The obtained nanoparticles were characterized by X-Ray diffraction analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The suspension stability of the uncoated and coated CONPs in aqueous media was evaluated by measuring the hydrodynamic size, zeta potential and turbidity. The FT-IR spectra revealed the differences between coated CONPs and showed the success of subsequent coating with carbohydrates. Coating with carbohydrates improved the stability the CONP suspension by decreasing the size of aggregated particles. The suspensions of levan- and glucose-coated CONPs had the best stability. In this study, CONPs were prepared using non-toxic materials, which were completely environmentally friendly. The obtained results open new horizons for CONP synthesis, improving their biological applications.
T2  - Journal of the Serbian Chemical Society
T1  - Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating
VL  - 83
IS  - 6
SP  - 745
EP  - 757
DO  - 10.2298/JSC171205031M
ER  - 

@article{
author = "Milenković, Ivana and Radotić, Ksenija and Matović, Branko and Prekajski, Marija D. and Živković, Ljiljana and Jakovljević, Dragica and Gojgić-Cvijović, Gordana and Beškoski, Vladimir P.",
year = "2018",
abstract = "Cerium oxide (CeO2) nanoparticles (CONPs) are interesting biomaterials with various applications in biomedicine, cosmetics and the pharmaceutical industry, but with limited practical application because of their low stability in aqueous media. The aim of this study was to obtain CONPs with increased stability by coating the particles. Microbial exopolysaccharides (levan, pullulan) and glucose were used to prepare CONPs under different synthesis conditions. Coating was attempted by adding the carbohydrates during (direct coating) or after (subsequent coating) the synthesis of CONPs. The obtained nanoparticles were characterized by X-Ray diffraction analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The suspension stability of the uncoated and coated CONPs in aqueous media was evaluated by measuring the hydrodynamic size, zeta potential and turbidity. The FT-IR spectra revealed the differences between coated CONPs and showed the success of subsequent coating with carbohydrates. Coating with carbohydrates improved the stability the CONP suspension by decreasing the size of aggregated particles. The suspensions of levan- and glucose-coated CONPs had the best stability. In this study, CONPs were prepared using non-toxic materials, which were completely environmentally friendly. The obtained results open new horizons for CONP synthesis, improving their biological applications.",
journal = "Journal of the Serbian Chemical Society",
title = "Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating",
volume = "83",
number = "6",
pages = "745-757",
doi = "10.2298/JSC171205031M"
}

Milenković, I., Radotić, K., Matović, B., Prekajski, M. D., Živković, L., Jakovljević, D., Gojgić-Cvijović, G.,& Beškoski, V. P.. (2018). Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating. in Journal of the Serbian Chemical Society, 83(6), 745-757.
https://doi.org/10.2298/JSC171205031M

Milenković I, Radotić K, Matović B, Prekajski MD, Živković L, Jakovljević D, Gojgić-Cvijović G, Beškoski VP. Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating. in Journal of the Serbian Chemical Society. 2018;83(6):745-757.
doi:10.2298/JSC171205031M .

Milenković, Ivana, Radotić, Ksenija, Matović, Branko, Prekajski, Marija D., Živković, Ljiljana, Jakovljević, Dragica, Gojgić-Cvijović, Gordana, Beškoski, Vladimir P., "Improving stability of cerium oxide nanoparticles by microbial polysaccharides coating" in Journal of the Serbian Chemical Society, 83, no. 6 (2018):745-757,
https://doi.org/10.2298/JSC171205031M . .

TY  - JOUR
AU  - Jednak, Tanja
AU  - Avdalović, Jelena
AU  - Miletić, Srđan
AU  - Slavković-Beškoski, Latinka J.
AU  - Stanković, Dalibor M.
AU  - Milić, Jelena
AU  - Ilić, Mila
AU  - Beškoski, Vladimir P.
AU  - Gojgić-Cvijović, Gordana
AU  - Vrvić, Miroslav M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1611
AB  - The aim of this paper was to investigate whether changes in the quantity and structure of humic acids (HA) occur during bioremediation of waste mazute (heavy residual fuel oil). The effects of humification on the structure of HA were evaluated by Fourier Transform Infrared Spectroscopy (FT-IR), potentiometric titrations, the ratio of absorbances at 465 and 665 nm (E4/E6 ratio) and the ratio. Also, the quality of humification was monitored by determining parameters which are important for measuring the evolution of humic substances (HS), such as CHA/CFA (the humic acidifulvic acidratio), the rate of extraction (TE) and the index of polymerization (IP). An increase of the content of HA from 0.23% to 0.70% was observed during the bioremediation process. The FT-IR spectra and 04 ratio of HA extracted at the beginning and the end of the process indicate structural changes during the bioremediation process. The groups containing aromatic and carboxylic carbon increased, resulting in HA structures of higher aromaticity. An increase of the B4/E6 ratio during bioremediation treatment implied the enrichment of HA with functional oxygen groups. Potentiometric titrations of HA solution showed increases in the buffering and the redox capacities of HA during the bioremediation process. The results of parameters of humification showed an increase of the compositional carbon in HA at the end, compared to at the start, of bioremediation, while the carbon that belonged to fulvic acids (FA) reduced by 44%. Transformation into HA is the likely cause of this observed reduction. The TE and the IP demonstrated that humification occured during the bioremediation process. According to the available data, this is the first report on synthesis of HS during bioremediation of petroleum hydrocarbons. (C) 2017 Published by Elsevier Ltd.
T2  - International Biodeterioration and Biodegradation
T1  - Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons
VL  - 122
SP  - 47
EP  - 52
DO  - 10.1016/j.ibiod.2017.04.009
ER  - 

@article{
author = "Jednak, Tanja and Avdalović, Jelena and Miletić, Srđan and Slavković-Beškoski, Latinka J. and Stanković, Dalibor M. and Milić, Jelena and Ilić, Mila and Beškoski, Vladimir P. and Gojgić-Cvijović, Gordana and Vrvić, Miroslav M.",
year = "2017",
abstract = "The aim of this paper was to investigate whether changes in the quantity and structure of humic acids (HA) occur during bioremediation of waste mazute (heavy residual fuel oil). The effects of humification on the structure of HA were evaluated by Fourier Transform Infrared Spectroscopy (FT-IR), potentiometric titrations, the ratio of absorbances at 465 and 665 nm (E4/E6 ratio) and the ratio. Also, the quality of humification was monitored by determining parameters which are important for measuring the evolution of humic substances (HS), such as CHA/CFA (the humic acidifulvic acidratio), the rate of extraction (TE) and the index of polymerization (IP). An increase of the content of HA from 0.23% to 0.70% was observed during the bioremediation process. The FT-IR spectra and 04 ratio of HA extracted at the beginning and the end of the process indicate structural changes during the bioremediation process. The groups containing aromatic and carboxylic carbon increased, resulting in HA structures of higher aromaticity. An increase of the B4/E6 ratio during bioremediation treatment implied the enrichment of HA with functional oxygen groups. Potentiometric titrations of HA solution showed increases in the buffering and the redox capacities of HA during the bioremediation process. The results of parameters of humification showed an increase of the compositional carbon in HA at the end, compared to at the start, of bioremediation, while the carbon that belonged to fulvic acids (FA) reduced by 44%. Transformation into HA is the likely cause of this observed reduction. The TE and the IP demonstrated that humification occured during the bioremediation process. According to the available data, this is the first report on synthesis of HS during bioremediation of petroleum hydrocarbons. (C) 2017 Published by Elsevier Ltd.",
journal = "International Biodeterioration and Biodegradation",
title = "Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons",
volume = "122",
pages = "47-52",
doi = "10.1016/j.ibiod.2017.04.009"
}

Jednak, T., Avdalović, J., Miletić, S., Slavković-Beškoski, L. J., Stanković, D. M., Milić, J., Ilić, M., Beškoski, V. P., Gojgić-Cvijović, G.,& Vrvić, M. M.. (2017). Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons. in International Biodeterioration and Biodegradation, 122, 47-52.
https://doi.org/10.1016/j.ibiod.2017.04.009

Jednak T, Avdalović J, Miletić S, Slavković-Beškoski LJ, Stanković DM, Milić J, Ilić M, Beškoski VP, Gojgić-Cvijović G, Vrvić MM. Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons. in International Biodeterioration and Biodegradation. 2017;122:47-52.
doi:10.1016/j.ibiod.2017.04.009 .

Jednak, Tanja, Avdalović, Jelena, Miletić, Srđan, Slavković-Beškoski, Latinka J., Stanković, Dalibor M., Milić, Jelena, Ilić, Mila, Beškoski, Vladimir P., Gojgić-Cvijović, Gordana, Vrvić, Miroslav M., "Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons" in International Biodeterioration and Biodegradation, 122 (2017):47-52,
https://doi.org/10.1016/j.ibiod.2017.04.009 . .

TY  - JOUR
AU  - Jeremić, Sanja
AU  - Beškoski, Vladimir P.
AU  - Đokić, Lidija
AU  - Vasiljević, Branka
AU  - Vrvić, Miroslav M.
AU  - Avdalović, Jelena
AU  - Gojgić-Cvijović, Gordana
AU  - Slavković-Beškoski, Latinka J.
AU  - Nikodinović-Runić, Jasmina
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1017
AB  - Iron and sulfur oxidizing chemolithoautotrophic acidophilic bacteria, such as Acidithiobacillus species, hold the dominant role in mine environments characterized by low pH values and high concentrations of reduced sulfur and iron compounds, such as ores, rocks and acid drainage waters from mines. On the other hand, heterotrophic microorganisms, especially their biofilms, from these specific niches are receiving increased attention, but their potential eco-physiological roles have not been fully understood. Biofilms are considered a threat to human health, but biofilms also have beneficial properties as they are deployed in waste recycling and bioremediation systems. We have analyzed interactions of the metal tolerant heterotrophic microorganisms in biofilms with iron oxidizing autotrophic bacteria both from the sulphidic mine environment (copper mine Bor, Serbia). High tolerance to Cu2+, Cd2+ and Cr6+ and the presence of genetic determinants for the respective metal tolerance and biofilm-forming ability was shown for indigenous heterotrophic bacteria that included strains of Staphylococcus and Rhodococcus. Two well characterized bacteria-Pseudomonas aeruginosa PAO1 (known biofilm former) and Cupriavidus metallidurans CH34 (known metal resistant representative) were also included in the study. The interaction and survivability of autotrophic iron oxidizing Acidithiobacillus bacteria and biofilms of heterotrophic bacteria during co-cultivation was revealed. Finally, the effect of heterotrophic biofilms on bioleaching process with indigenous iron oxidizing Acidithiobacillus species was shown not to be inhibitory under in vitro conditions. (C) 2016 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Journal of Environmental Management
T1  - Interactions of the metal tolerant heterotrophic microorganisms and iron oxidizing autotrophic bacteria from sulphidic mine environment during bioleaching experiments
VL  - 172
SP  - 151
EP  - 161
DO  - 10.1016/j.jenvman.2016.02.041
ER  - 

@article{
author = "Jeremić, Sanja and Beškoski, Vladimir P. and Đokić, Lidija and Vasiljević, Branka and Vrvić, Miroslav M. and Avdalović, Jelena and Gojgić-Cvijović, Gordana and Slavković-Beškoski, Latinka J. and Nikodinović-Runić, Jasmina",
year = "2016",
abstract = "Iron and sulfur oxidizing chemolithoautotrophic acidophilic bacteria, such as Acidithiobacillus species, hold the dominant role in mine environments characterized by low pH values and high concentrations of reduced sulfur and iron compounds, such as ores, rocks and acid drainage waters from mines. On the other hand, heterotrophic microorganisms, especially their biofilms, from these specific niches are receiving increased attention, but their potential eco-physiological roles have not been fully understood. Biofilms are considered a threat to human health, but biofilms also have beneficial properties as they are deployed in waste recycling and bioremediation systems. We have analyzed interactions of the metal tolerant heterotrophic microorganisms in biofilms with iron oxidizing autotrophic bacteria both from the sulphidic mine environment (copper mine Bor, Serbia). High tolerance to Cu2+, Cd2+ and Cr6+ and the presence of genetic determinants for the respective metal tolerance and biofilm-forming ability was shown for indigenous heterotrophic bacteria that included strains of Staphylococcus and Rhodococcus. Two well characterized bacteria-Pseudomonas aeruginosa PAO1 (known biofilm former) and Cupriavidus metallidurans CH34 (known metal resistant representative) were also included in the study. The interaction and survivability of autotrophic iron oxidizing Acidithiobacillus bacteria and biofilms of heterotrophic bacteria during co-cultivation was revealed. Finally, the effect of heterotrophic biofilms on bioleaching process with indigenous iron oxidizing Acidithiobacillus species was shown not to be inhibitory under in vitro conditions. (C) 2016 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Environmental Management",
title = "Interactions of the metal tolerant heterotrophic microorganisms and iron oxidizing autotrophic bacteria from sulphidic mine environment during bioleaching experiments",
volume = "172",
pages = "151-161",
doi = "10.1016/j.jenvman.2016.02.041"
}

Jeremić, S., Beškoski, V. P., Đokić, L., Vasiljević, B., Vrvić, M. M., Avdalović, J., Gojgić-Cvijović, G., Slavković-Beškoski, L. J.,& Nikodinović-Runić, J.. (2016). Interactions of the metal tolerant heterotrophic microorganisms and iron oxidizing autotrophic bacteria from sulphidic mine environment during bioleaching experiments. in Journal of Environmental Management
Elsevier., 172, 151-161.
https://doi.org/10.1016/j.jenvman.2016.02.041

Jeremić S, Beškoski VP, Đokić L, Vasiljević B, Vrvić MM, Avdalović J, Gojgić-Cvijović G, Slavković-Beškoski LJ, Nikodinović-Runić J. Interactions of the metal tolerant heterotrophic microorganisms and iron oxidizing autotrophic bacteria from sulphidic mine environment during bioleaching experiments. in Journal of Environmental Management. 2016;172:151-161.
doi:10.1016/j.jenvman.2016.02.041 .

Jeremić, Sanja, Beškoski, Vladimir P., Đokić, Lidija, Vasiljević, Branka, Vrvić, Miroslav M., Avdalović, Jelena, Gojgić-Cvijović, Gordana, Slavković-Beškoski, Latinka J., Nikodinović-Runić, Jasmina, "Interactions of the metal tolerant heterotrophic microorganisms and iron oxidizing autotrophic bacteria from sulphidic mine environment during bioleaching experiments" in Journal of Environmental Management, 172 (2016):151-161,
https://doi.org/10.1016/j.jenvman.2016.02.041 . .

TY  - CONF
AU  - Kekez, Branka
AU  - Gojgić-Cvijović, Gordana
AU  - Jakovljević, Dragica
AU  - Živković, Ljiljana
AU  - Beškoski, Vladimir P.
AU  - Vrvić, Miroslav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9237
AB  - In this work, gold nanoparticles (AuNPs) were synthesized in aqueous
solution by aldehyde functionalized microbial polysaccharide levan as a
reducing agent. Resulting nanoparticles were characterized by UV-Vis
spectroscopy and by particle size analysis.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Synthesis of gold nanoparticles using aldehyde functionalized levan as reducing agent
VL  - H-24-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9237
ER  - 

@conference{
author = "Kekez, Branka and Gojgić-Cvijović, Gordana and Jakovljević, Dragica and Živković, Ljiljana and Beškoski, Vladimir P. and Vrvić, Miroslav",
year = "2014",
abstract = "In this work, gold nanoparticles (AuNPs) were synthesized in aqueous
solution by aldehyde functionalized microbial polysaccharide levan as a
reducing agent. Resulting nanoparticles were characterized by UV-Vis
spectroscopy and by particle size analysis.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Synthesis of gold nanoparticles using aldehyde functionalized levan as reducing agent",
volume = "H-24-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9237"
}

Kekez, B., Gojgić-Cvijović, G., Jakovljević, D., Živković, L., Beškoski, V. P.,& Vrvić, M.. (2014). Synthesis of gold nanoparticles using aldehyde functionalized levan as reducing agent. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., H-24-P.
https://hdl.handle.net/21.15107/rcub_vinar_9237

Kekez B, Gojgić-Cvijović G, Jakovljević D, Živković L, Beškoski VP, Vrvić M. Synthesis of gold nanoparticles using aldehyde functionalized levan as reducing agent. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-24-P.
https://hdl.handle.net/21.15107/rcub_vinar_9237 .

Kekez, Branka, Gojgić-Cvijović, Gordana, Jakovljević, Dragica, Živković, Ljiljana, Beškoski, Vladimir P., Vrvić, Miroslav, "Synthesis of gold nanoparticles using aldehyde functionalized levan as reducing agent" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-24-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9237 .

TY  - JOUR
AU  - Beškoski, Vladimir P.
AU  - Takemine, Shusuke
AU  - Nakano, Takeshi
AU  - Slavković-Beškoski, Latinka J.
AU  - Gojgić-Cvijović, Gordana
AU  - Ilić, Mila
AU  - Miletic, Srdjan
AU  - Vrvić, Miroslav M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5512
AB  - Perfluoroalkyl sulfonates (PFSAs) and perfluoroalkyl carboxylates (PFCAs) were analyzed in sediment samples from the wastewater canal draining the industrial complex of Pancevo, Serbia (oil refinery, petrochemical plant, and fertilizer factory). The canal is directly connected to Europes second largest river, the Danube, which drains its water into the Black Sea. Perfluorooctane sulfonate (PFOS) up to 5.7 ng d(-1) weight (dw) and total Perfluorinated compounds (PFCs) up to 6.3 ng g(-1) dw were detected. Compared to other reports, high levels of PFOS were found, even though PFCs are not used in the industrial production associated with this canal. The PFOS concentration in water was recalculated using the adsorption coefficient, K-oc from literature. Using the average output of wastewater from the canal, a mass load of 1.38 kg PFOS per year discharged in the Danube River has been calculated, which undoubtedly points to the contribution to global persistent organic pollution of surface waters originating from this industrial place. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Chemosphere
T1  - Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area
VL  - 91
IS  - 10
SP  - 1408
EP  - 1415
DO  - 10.1016/j.chemosphere.2012.12.079
ER  - 

@article{
author = "Beškoski, Vladimir P. and Takemine, Shusuke and Nakano, Takeshi and Slavković-Beškoski, Latinka J. and Gojgić-Cvijović, Gordana and Ilić, Mila and Miletic, Srdjan and Vrvić, Miroslav M.",
year = "2013",
abstract = "Perfluoroalkyl sulfonates (PFSAs) and perfluoroalkyl carboxylates (PFCAs) were analyzed in sediment samples from the wastewater canal draining the industrial complex of Pancevo, Serbia (oil refinery, petrochemical plant, and fertilizer factory). The canal is directly connected to Europes second largest river, the Danube, which drains its water into the Black Sea. Perfluorooctane sulfonate (PFOS) up to 5.7 ng d(-1) weight (dw) and total Perfluorinated compounds (PFCs) up to 6.3 ng g(-1) dw were detected. Compared to other reports, high levels of PFOS were found, even though PFCs are not used in the industrial production associated with this canal. The PFOS concentration in water was recalculated using the adsorption coefficient, K-oc from literature. Using the average output of wastewater from the canal, a mass load of 1.38 kg PFOS per year discharged in the Danube River has been calculated, which undoubtedly points to the contribution to global persistent organic pollution of surface waters originating from this industrial place. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Chemosphere",
title = "Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area",
volume = "91",
number = "10",
pages = "1408-1415",
doi = "10.1016/j.chemosphere.2012.12.079"
}

Beškoski, V. P., Takemine, S., Nakano, T., Slavković-Beškoski, L. J., Gojgić-Cvijović, G., Ilić, M., Miletic, S.,& Vrvić, M. M.. (2013). Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area. in Chemosphere, 91(10), 1408-1415.
https://doi.org/10.1016/j.chemosphere.2012.12.079

Beškoski VP, Takemine S, Nakano T, Slavković-Beškoski LJ, Gojgić-Cvijović G, Ilić M, Miletic S, Vrvić MM. Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area. in Chemosphere. 2013;91(10):1408-1415.
doi:10.1016/j.chemosphere.2012.12.079 .

Beškoski, Vladimir P., Takemine, Shusuke, Nakano, Takeshi, Slavković-Beškoski, Latinka J., Gojgić-Cvijović, Gordana, Ilić, Mila, Miletic, Srdjan, Vrvić, Miroslav M., "Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area" in Chemosphere, 91, no. 10 (2013):1408-1415,
https://doi.org/10.1016/j.chemosphere.2012.12.079 . .