TY  - JOUR
AU  - Mutić, Tijana
AU  - Ognjanović, Miloš
AU  - Ivković, Đurđa
AU  - Nikolić, Vladimir
AU  - Stanković, Vesna
AU  - Ristivojević, Petar
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13031
AB  - In this study, we successfully prepared a modified nickel oxide (NiO) carbon paste electrode to detect gallic acid (GA). NiO nanoparticles were synthesized by the simple, organic solvent-free chemical coprecipitation method, and the electrochemical properties of the electrode and GA were thoroughly investigated using CV, SWV, and EIS, while morphological properties were examined using ICP-OES, TEM, SEM, and XRD. Excellent catalytic characteristics are displayed by the developed material which facilitates the interaction of the target with the electrode surface. The obtained electrochemical information showed that the incorporation of NiO nanoparticles to the carbon paste electrode effectively facilitates electron transfer processes and enriches the catalytic response of the carbon paste electrode. The fabricated NiO/CPE sensor showed a satisfactory linear relationship between peak current and GA concentration in the broad range of 0.2–100 μM and 100–200 μM with a low detection limit of 0.04 μM and limit of quantification of 0.12 μM at pH 3 of BRBS as supporting electrolyte. The selectivity of the proposed method was satisfactory, with acceptable stability, considerable repeatability, and accurate reproducibility. Moreover, the good practicability performance could be effectuated at the NiO/CPE sensor for the quantitative analysis of GA in bourtree, walnut, primrose, and chamomile tea samples. The results were compared with the standard DPPH test and statistical processing of the results was performed, which confirmed the excellent agreement between the two methods. The developed method can provide a cost-effective, rapid, selective, and sensitive means for GA monitoring. When compared to other works, the developed technique has a wider linear range and lower LOD and LOQ, which makes this work a very important reference for the highly sensitive analysis of GA in the field of food safety.
T2  - Journal of Electroanalytical Chemistry
T1  - Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode
VL  - 960
SP  - 118213
DO  - 10.1016/j.jelechem.2024.118213
ER  - 

@article{
author = "Mutić, Tijana and Ognjanović, Miloš and Ivković, Đurđa and Nikolić, Vladimir and Stanković, Vesna and Ristivojević, Petar and Stanković, Dalibor",
year = "2024",
abstract = "In this study, we successfully prepared a modified nickel oxide (NiO) carbon paste electrode to detect gallic acid (GA). NiO nanoparticles were synthesized by the simple, organic solvent-free chemical coprecipitation method, and the electrochemical properties of the electrode and GA were thoroughly investigated using CV, SWV, and EIS, while morphological properties were examined using ICP-OES, TEM, SEM, and XRD. Excellent catalytic characteristics are displayed by the developed material which facilitates the interaction of the target with the electrode surface. The obtained electrochemical information showed that the incorporation of NiO nanoparticles to the carbon paste electrode effectively facilitates electron transfer processes and enriches the catalytic response of the carbon paste electrode. The fabricated NiO/CPE sensor showed a satisfactory linear relationship between peak current and GA concentration in the broad range of 0.2–100 μM and 100–200 μM with a low detection limit of 0.04 μM and limit of quantification of 0.12 μM at pH 3 of BRBS as supporting electrolyte. The selectivity of the proposed method was satisfactory, with acceptable stability, considerable repeatability, and accurate reproducibility. Moreover, the good practicability performance could be effectuated at the NiO/CPE sensor for the quantitative analysis of GA in bourtree, walnut, primrose, and chamomile tea samples. The results were compared with the standard DPPH test and statistical processing of the results was performed, which confirmed the excellent agreement between the two methods. The developed method can provide a cost-effective, rapid, selective, and sensitive means for GA monitoring. When compared to other works, the developed technique has a wider linear range and lower LOD and LOQ, which makes this work a very important reference for the highly sensitive analysis of GA in the field of food safety.",
journal = "Journal of Electroanalytical Chemistry",
title = "Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode",
volume = "960",
pages = "118213",
doi = "10.1016/j.jelechem.2024.118213"
}

Mutić, T., Ognjanović, M., Ivković, Đ., Nikolić, V., Stanković, V., Ristivojević, P.,& Stanković, D.. (2024). Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode. in Journal of Electroanalytical Chemistry, 960, 118213.
https://doi.org/10.1016/j.jelechem.2024.118213

Mutić T, Ognjanović M, Ivković Đ, Nikolić V, Stanković V, Ristivojević P, Stanković D. Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode. in Journal of Electroanalytical Chemistry. 2024;960:118213.
doi:10.1016/j.jelechem.2024.118213 .

Mutić, Tijana, Ognjanović, Miloš, Ivković, Đurđa, Nikolić, Vladimir, Stanković, Vesna, Ristivojević, Petar, Stanković, Dalibor, "Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode" in Journal of Electroanalytical Chemistry, 960 (2024):118213,
https://doi.org/10.1016/j.jelechem.2024.118213 . .

TY  - JOUR
AU  - Stojsavljević, Aleksandar
AU  - Jagodić, Jovana
AU  - Pavlović, Slađan
AU  - Dinčić, Evica
AU  - Kuveljić, Jovana
AU  - Manojlović, Dragan
AU  - Živković, Maja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12937
AB  - Background  Multiple sclerosis (MS) is a chronic demyelinating disorder intricately linked to perturbations in trace element levels. While previous studies have explored circulating trace elements in a limited sample, understanding the impact of demographic and clinical variables on the elemental profile within a larger cohort remains elusive. Methods  This study aimed to evaluate essential trace elements (Cr, Mn, Co, Cu, Zn, and Se) in the sera of 215 MS patients compared to a meticulously matched control group of 100 individuals with similar gender and age. Our main objective was to identify potential variations in elemental profiles based on demographic and clinical parameters among MS patients, elucidating the prospective relevance of supplementing specific essential trace elements. Results  Data indicated a significant decrease in serum levels of Mn, Co, Zn, and Se, and an increase in Cr in MS patients compared to controls. These trace elements not only discriminated between MS patients and controls but also exhibited distinctive capabilities among demographic subgroups. Gender, smoking habits, and age strata (20-40 years and 41-60 years) revealed discernible variations in elemental profiles between MS patients and their control counterparts. Se demonstrated the singular ability to stratify cases of extreme MS severity, mild relapsing-remitting MS (RRMS) and highly severe secondary progressive MS (SPMS). In contrast, Co significantly differentiated RRMS from primary progressive MS (PPMS), while Cu significantly differentiated SPMS from PPMS. Additionally, Cu showed a negative correlation with MSSS, while Mn and Zn showed a positive correlation with EDSS. Conclusion  These findings underscore a substantive deficiency in Mn, Co, Zn, and Se in the MS cohort, supporting targeted supplementation with these trace elements. This study provides a comprehensive understanding of the intricate relationship between essential trace elements and MS, paving the way for further research into personalized nutritional interventions for this complex neurological disorder.
T2  - Journal of Trace Elements in Medicine and Biology
T1  - Essential trace element levels in multiple sclerosis: bridging demographic and clinical gaps, assessing the need for supplementation
VL  - 83
SP  - 127421
DO  - 10.1016/j.jtemb.2024.127421
ER  - 

@article{
author = "Stojsavljević, Aleksandar and Jagodić, Jovana and Pavlović, Slađan and Dinčić, Evica and Kuveljić, Jovana and Manojlović, Dragan and Živković, Maja",
year = "2024",
abstract = "Background  Multiple sclerosis (MS) is a chronic demyelinating disorder intricately linked to perturbations in trace element levels. While previous studies have explored circulating trace elements in a limited sample, understanding the impact of demographic and clinical variables on the elemental profile within a larger cohort remains elusive. Methods  This study aimed to evaluate essential trace elements (Cr, Mn, Co, Cu, Zn, and Se) in the sera of 215 MS patients compared to a meticulously matched control group of 100 individuals with similar gender and age. Our main objective was to identify potential variations in elemental profiles based on demographic and clinical parameters among MS patients, elucidating the prospective relevance of supplementing specific essential trace elements. Results  Data indicated a significant decrease in serum levels of Mn, Co, Zn, and Se, and an increase in Cr in MS patients compared to controls. These trace elements not only discriminated between MS patients and controls but also exhibited distinctive capabilities among demographic subgroups. Gender, smoking habits, and age strata (20-40 years and 41-60 years) revealed discernible variations in elemental profiles between MS patients and their control counterparts. Se demonstrated the singular ability to stratify cases of extreme MS severity, mild relapsing-remitting MS (RRMS) and highly severe secondary progressive MS (SPMS). In contrast, Co significantly differentiated RRMS from primary progressive MS (PPMS), while Cu significantly differentiated SPMS from PPMS. Additionally, Cu showed a negative correlation with MSSS, while Mn and Zn showed a positive correlation with EDSS. Conclusion  These findings underscore a substantive deficiency in Mn, Co, Zn, and Se in the MS cohort, supporting targeted supplementation with these trace elements. This study provides a comprehensive understanding of the intricate relationship between essential trace elements and MS, paving the way for further research into personalized nutritional interventions for this complex neurological disorder.",
journal = "Journal of Trace Elements in Medicine and Biology",
title = "Essential trace element levels in multiple sclerosis: bridging demographic and clinical gaps, assessing the need for supplementation",
volume = "83",
pages = "127421",
doi = "10.1016/j.jtemb.2024.127421"
}

Stojsavljević, A., Jagodić, J., Pavlović, S., Dinčić, E., Kuveljić, J., Manojlović, D.,& Živković, M.. (2024). Essential trace element levels in multiple sclerosis: bridging demographic and clinical gaps, assessing the need for supplementation. in Journal of Trace Elements in Medicine and Biology, 83, 127421.
https://doi.org/10.1016/j.jtemb.2024.127421

Stojsavljević A, Jagodić J, Pavlović S, Dinčić E, Kuveljić J, Manojlović D, Živković M. Essential trace element levels in multiple sclerosis: bridging demographic and clinical gaps, assessing the need for supplementation. in Journal of Trace Elements in Medicine and Biology. 2024;83:127421.
doi:10.1016/j.jtemb.2024.127421 .

Stojsavljević, Aleksandar, Jagodić, Jovana, Pavlović, Slađan, Dinčić, Evica, Kuveljić, Jovana, Manojlović, Dragan, Živković, Maja, "Essential trace element levels in multiple sclerosis: bridging demographic and clinical gaps, assessing the need for supplementation" in Journal of Trace Elements in Medicine and Biology, 83 (2024):127421,
https://doi.org/10.1016/j.jtemb.2024.127421 . .

TY  - JOUR
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Milica
AU  - Bukumira, Marta
AU  - Tomić, Nina
AU  - Tomić, Miloš
AU  - Mančić, Lidija
AU  - Ignjatović, Nenad
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12299
AB  - Y0.8−xGdxF3 :Yb/Er mesocrystals with a biocompatible surface and diverse morphological characteristics were successfully synthesized using chitosan-assisted solvothermal processing. Their structural properties, studied using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and energy dispersive X-ray analysis, were further correlated with the up-conversion emission (λexc = 976 nm) recorded in function of temperature. Based on the change in the visible green emissions originating from the thermally coupled 2H11/2 and 4S3/2 levels of Er3+, the corresponding LIR was acquired in the physiologically relevant range of temperatures (25–50 ◦C). The detected absolute sensitivity of about 0.0042 ◦C −1 , along with the low cytotoxicity toward both normal human lung fibroblasts (MRC-5) and cancerous lung epithelial (A549) cells, indicate a potential for use in temperature sensing in biomedicine. Additionally, their enhanced internalization in cells, without suppression of cell viability, enabled in vitro labeling of cancer and healthy cells upon 976 nm laser irradiation.
T2  - Journal of Functional Biomaterials
T1  - Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals
VL  - 15
IS  - 1
SP  - 6
DO  - 10.3390/jfb15010006
ER  - 

@article{
author = "Dinić, Ivana and Vuković, Marina and Rabanal, Maria Eugenia and Milošević, Milica and Bukumira, Marta and Tomić, Nina and Tomić, Miloš and Mančić, Lidija and Ignjatović, Nenad",
year = "2024",
abstract = "Y0.8−xGdxF3 :Yb/Er mesocrystals with a biocompatible surface and diverse morphological characteristics were successfully synthesized using chitosan-assisted solvothermal processing. Their structural properties, studied using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and energy dispersive X-ray analysis, were further correlated with the up-conversion emission (λexc = 976 nm) recorded in function of temperature. Based on the change in the visible green emissions originating from the thermally coupled 2H11/2 and 4S3/2 levels of Er3+, the corresponding LIR was acquired in the physiologically relevant range of temperatures (25–50 ◦C). The detected absolute sensitivity of about 0.0042 ◦C −1 , along with the low cytotoxicity toward both normal human lung fibroblasts (MRC-5) and cancerous lung epithelial (A549) cells, indicate a potential for use in temperature sensing in biomedicine. Additionally, their enhanced internalization in cells, without suppression of cell viability, enabled in vitro labeling of cancer and healthy cells upon 976 nm laser irradiation.",
journal = "Journal of Functional Biomaterials",
title = "Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals",
volume = "15",
number = "1",
pages = "6",
doi = "10.3390/jfb15010006"
}

Dinić, I., Vuković, M., Rabanal, M. E., Milošević, M., Bukumira, M., Tomić, N., Tomić, M., Mančić, L.,& Ignjatović, N.. (2024). Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals. in Journal of Functional Biomaterials, 15(1), 6.
https://doi.org/10.3390/jfb15010006

Dinić I, Vuković M, Rabanal ME, Milošević M, Bukumira M, Tomić N, Tomić M, Mančić L, Ignjatović N. Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals. in Journal of Functional Biomaterials. 2024;15(1):6.
doi:10.3390/jfb15010006 .

Dinić, Ivana, Vuković, Marina, Rabanal, Maria Eugenia, Milošević, Milica, Bukumira, Marta, Tomić, Nina, Tomić, Miloš, Mančić, Lidija, Ignjatović, Nenad, "Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals" in Journal of Functional Biomaterials, 15, no. 1 (2024):6,
https://doi.org/10.3390/jfb15010006 . .

TY  - JOUR
AU  - Šokarda Slavić, Marinela
AU  - Kojić, Milan
AU  - Margetić, Aleksandra
AU  - Ristović, Marina
AU  - Pavlović, Marija
AU  - Nikolić, Stefan
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11438
AB  - The combination of β‐oligosaccharides from enzymatically hydrolysed barley β‐glucan has attracted interest recently due to its positive effects on human health. This study aimed to assess the impact of the endo‐β‐1,3‐1,4‐glucanase enzyme from Bacillus subtilis 168 on improving the nutritional and bioactive properties of barley β‐glucan. A new procedure for the isolation of β‐glucan was developed, at a lower temperature (45 °C), enabling purity from starch contamination, without affecting the yield (6 g β‐glucan from 100 g of barley flour). The endo‐β‐1,3‐1,4‐glucanase is cloned into E. coli pQE_Ek enables the high production and purification (82% yield, 1.8 mg mL −1 and 440 U mg −1 ) of an enzyme identical to the natural one (25.5 kDa). The enzymatic reaction showed high efficiency of β‐glucan degradation by recombinant enzyme, giving a mixture of products (of which 3‐O‐β‐cellobiosyl‐D‐glucose and 3‐O‐β‐cellotriosyl‐D‐glucose are the most abundant), the reduction of viscosity (17%) and increase in antioxidant capacities by 15.2%, 30.9% and 44.0% assessed by ABTS, DPPH and ORAC, respectively. These results indicate the possible application of endo‐β‐1,3‐1,4‐glucanase enzyme in improving the properties of barley β‐glucan used as functional foods.
T2  - International Journal of Food Science & Technology
T1  - Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase
DO  - 10.1111/ijfs.16647
ER  - 

@article{
author = "Šokarda Slavić, Marinela and Kojić, Milan and Margetić, Aleksandra and Ristović, Marina and Pavlović, Marija and Nikolić, Stefan and Vujčić, Zoran",
year = "2023",
abstract = "The combination of β‐oligosaccharides from enzymatically hydrolysed barley β‐glucan has attracted interest recently due to its positive effects on human health. This study aimed to assess the impact of the endo‐β‐1,3‐1,4‐glucanase enzyme from Bacillus subtilis 168 on improving the nutritional and bioactive properties of barley β‐glucan. A new procedure for the isolation of β‐glucan was developed, at a lower temperature (45 °C), enabling purity from starch contamination, without affecting the yield (6 g β‐glucan from 100 g of barley flour). The endo‐β‐1,3‐1,4‐glucanase is cloned into E. coli pQE_Ek enables the high production and purification (82% yield, 1.8 mg mL −1 and 440 U mg −1 ) of an enzyme identical to the natural one (25.5 kDa). The enzymatic reaction showed high efficiency of β‐glucan degradation by recombinant enzyme, giving a mixture of products (of which 3‐O‐β‐cellobiosyl‐D‐glucose and 3‐O‐β‐cellotriosyl‐D‐glucose are the most abundant), the reduction of viscosity (17%) and increase in antioxidant capacities by 15.2%, 30.9% and 44.0% assessed by ABTS, DPPH and ORAC, respectively. These results indicate the possible application of endo‐β‐1,3‐1,4‐glucanase enzyme in improving the properties of barley β‐glucan used as functional foods.",
journal = "International Journal of Food Science & Technology",
title = "Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase",
doi = "10.1111/ijfs.16647"
}

Šokarda Slavić, M., Kojić, M., Margetić, A., Ristović, M., Pavlović, M., Nikolić, S.,& Vujčić, Z.. (2023). Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase. in International Journal of Food Science & Technology.
https://doi.org/10.1111/ijfs.16647

Šokarda Slavić M, Kojić M, Margetić A, Ristović M, Pavlović M, Nikolić S, Vujčić Z. Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase. in International Journal of Food Science & Technology. 2023;.
doi:10.1111/ijfs.16647 .

Šokarda Slavić, Marinela, Kojić, Milan, Margetić, Aleksandra, Ristović, Marina, Pavlović, Marija, Nikolić, Stefan, Vujčić, Zoran, "Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase" in International Journal of Food Science & Technology (2023),
https://doi.org/10.1111/ijfs.16647 . .

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vera P.
AU  - Petronijević, Ivan
AU  - Stanković, Dalibor M.
AU  - Jeremić, Dejan
AU  - Uskoković, Vuk
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10935
AB  - The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition
VL  - 49
IS  - 14, Part A
SP  - 23491
EP  - 23498
DO  - 10.1016/j.ceramint.2023.04.182
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Mirković, Miljana and Pavlović, Vera P. and Petronijević, Ivan and Stanković, Dalibor M. and Jeremić, Dejan and Uskoković, Vuk",
year = "2023",
abstract = "The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition",
volume = "49",
number = "14, Part A",
pages = "23491-23498",
doi = "10.1016/j.ceramint.2023.04.182"
}

Anđelković, L., Šuljagić, M., Mirković, M., Pavlović, V. P., Petronijević, I., Stanković, D. M., Jeremić, D.,& Uskoković, V.. (2023). Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International, 49(14, Part A), 23491-23498.
https://doi.org/10.1016/j.ceramint.2023.04.182

Anđelković L, Šuljagić M, Mirković M, Pavlović VP, Petronijević I, Stanković DM, Jeremić D, Uskoković V. Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International. 2023;49(14, Part A):23491-23498.
doi:10.1016/j.ceramint.2023.04.182 .

Anđelković, Ljubica, Šuljagić, Marija, Mirković, Miljana, Pavlović, Vera P., Petronijević, Ivan, Stanković, Dalibor M., Jeremić, Dejan, Uskoković, Vuk, "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition" in Ceramics International, 49, no. 14, Part A (2023):23491-23498,
https://doi.org/10.1016/j.ceramint.2023.04.182 . .

TY  - CONF
AU  - Stamenković, Tijana
AU  - Ranđelović, Marjan
AU  - Čebela, Maria
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11484
AB  - The aim of this research was to investigate for the first-time photocatalytic degradation of methylene blue over SrGd2O4 powders co-doped with constant Er3+ (0.5 at.%) and different Yb3+ (1, 2.5 and 5 at.%) concentrations. Samples were successfully prepared via sol-gel assisted combustion method. They exhibit photoluminescence properties which are manifested as red emission at 661 nm (4F9/2 → 4I15/2) and two green emissions at 551 and 523 nm (4S3/2 → 4I15/2 and 2H11/2 → 4I15/2). X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase. Scanning electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles. Energy dispersive X-ray spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. To calculate the energy band gap, UV-VIS diffuse reflectance spectroscopy was performed and a value of 4.3 eV was obtained, as well as the four additional values from the bands at lower energies. Photocatalytic degradation of methylene blue was monitored using UV-VIS absorption spectroscopy. Obtained results were promising since after 4 h of exposure to the simulating Sun irradiation, more than 50% of the starting dye concentration was mineralized.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus
SP  - 107
EP  - 107
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11484
ER  - 

@conference{
author = "Stamenković, Tijana and Ranđelović, Marjan and Čebela, Maria and Vuković, Marina and Dinić, Ivana and Mančić, Lidija and Lojpur, Vesna",
year = "2023",
abstract = "The aim of this research was to investigate for the first-time photocatalytic degradation of methylene blue over SrGd2O4 powders co-doped with constant Er3+ (0.5 at.%) and different Yb3+ (1, 2.5 and 5 at.%) concentrations. Samples were successfully prepared via sol-gel assisted combustion method. They exhibit photoluminescence properties which are manifested as red emission at 661 nm (4F9/2 → 4I15/2) and two green emissions at 551 and 523 nm (4S3/2 → 4I15/2 and 2H11/2 → 4I15/2). X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase. Scanning electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles. Energy dispersive X-ray spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. To calculate the energy band gap, UV-VIS diffuse reflectance spectroscopy was performed and a value of 4.3 eV was obtained, as well as the four additional values from the bands at lower energies. Photocatalytic degradation of methylene blue was monitored using UV-VIS absorption spectroscopy. Obtained results were promising since after 4 h of exposure to the simulating Sun irradiation, more than 50% of the starting dye concentration was mineralized.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus",
pages = "107-107",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11484"
}

Stamenković, T., Ranđelović, M., Čebela, M., Vuković, M., Dinić, I., Mančić, L.,& Lojpur, V.. (2023). Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research., 107-107.
https://hdl.handle.net/21.15107/rcub_vinar_11484

Stamenković T, Ranđelović M, Čebela M, Vuković M, Dinić I, Mančić L, Lojpur V. Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;:107-107.
https://hdl.handle.net/21.15107/rcub_vinar_11484 .

Stamenković, Tijana, Ranđelović, Marjan, Čebela, Maria, Vuković, Marina, Dinić, Ivana, Mančić, Lidija, Lojpur, Vesna, "Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023):107-107,
https://hdl.handle.net/21.15107/rcub_vinar_11484 .

TY  - JOUR
AU  - Luković, Milentije
AU  - Spasojević-Savković, Milica
AU  - Kosić, Olivera
AU  - Barudžija, Tanja
AU  - Lojpur, Vesna
AU  - Maričić, Aleksa
AU  - Spasojević, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12841
AB  - A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates. They consist of the crystalline phase BaFe12O19 and crystalline and amorphous phases Fe, BaTiO3, and TiO2. Samples sintered from powders ground for more than 180 min are compact and composed of BaFe12O19 crystals embedded in an amorphous matrix consisting of amorphous BaTiO3 and TiO2 phases. Magnetization of a sample ground for 220 min gradually decreases with increasing temperature up to 440°C. This decrease result from the transition of ordered domains into chaotically directed domains. Above 440°C, the thermal energy is sufficiently large to destroy ordered paramagnetic ferromagnetic and weakly ferromagnetic domains. During sample cooling in the absence of an external magnetic field, the temperature dependence of magnetization is the same as that obtained during heating in the magnetic field. However, during the sample cooling in the magnetic field, substantially higher values of magnetization are obtained. Considerably higher magnetization of the cooled sample remains even after switching off the external magnetic field. The sintered sample, previously pressed in the magnetic field, has a higher dielectric constant than the sample pressed in the absence of the magnetic field. The dielectric constant decreases with increasing frequency.
T2  - Science of Sintering
T1  - Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties
IS  - InPress
SP  - 67
EP  - 67
DO  - 10.2298/SOS230915067L
ER  - 

@article{
author = "Luković, Milentije and Spasojević-Savković, Milica and Kosić, Olivera and Barudžija, Tanja and Lojpur, Vesna and Maričić, Aleksa and Spasojević, Miroslav",
year = "2023",
abstract = "A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates. They consist of the crystalline phase BaFe12O19 and crystalline and amorphous phases Fe, BaTiO3, and TiO2. Samples sintered from powders ground for more than 180 min are compact and composed of BaFe12O19 crystals embedded in an amorphous matrix consisting of amorphous BaTiO3 and TiO2 phases. Magnetization of a sample ground for 220 min gradually decreases with increasing temperature up to 440°C. This decrease result from the transition of ordered domains into chaotically directed domains. Above 440°C, the thermal energy is sufficiently large to destroy ordered paramagnetic ferromagnetic and weakly ferromagnetic domains. During sample cooling in the absence of an external magnetic field, the temperature dependence of magnetization is the same as that obtained during heating in the magnetic field. However, during the sample cooling in the magnetic field, substantially higher values of magnetization are obtained. Considerably higher magnetization of the cooled sample remains even after switching off the external magnetic field. The sintered sample, previously pressed in the magnetic field, has a higher dielectric constant than the sample pressed in the absence of the magnetic field. The dielectric constant decreases with increasing frequency.",
journal = "Science of Sintering",
title = "Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties",
number = "InPress",
pages = "67-67",
doi = "10.2298/SOS230915067L"
}

Luković, M., Spasojević-Savković, M., Kosić, O., Barudžija, T., Lojpur, V., Maričić, A.,& Spasojević, M.. (2023). Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties. in Science of Sintering(InPress), 67-67.
https://doi.org/10.2298/SOS230915067L

Luković M, Spasojević-Savković M, Kosić O, Barudžija T, Lojpur V, Maričić A, Spasojević M. Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties. in Science of Sintering. 2023;(InPress):67-67.
doi:10.2298/SOS230915067L .

Luković, Milentije, Spasojević-Savković, Milica, Kosić, Olivera, Barudžija, Tanja, Lojpur, Vesna, Maričić, Aleksa, Spasojević, Miroslav, "Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties" in Science of Sintering, no. InPress (2023):67-67,
https://doi.org/10.2298/SOS230915067L . .

TY  - CONF
AU  - Stamenković, Tijana
AU  - Radmilović, Nadežda
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Barudžija, Tanja
AU  - Čebela, Maria
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11483
AB  - In this investigation, samples of SrGd2O4 doped with different Yb3+ (2, 4, 6 at.%) ions and constant Ho3+ (1 at.%) and Bi3+ (2 at.%) concentrations were prepared. The sol-gel method with glycine as a fuel and citric acid as a chelator was chosen for sample preparation. All samples were heated in the furnace for 1.5 h at 500 °C and then thermally treated for 2.5 h at 1000 °C. The pure orthorhombic lattice of SrGd2O4, space group Pnma, was revealed by X-ray diffraction (XRD) (JCPDS Card No.:01-072-6387). Transmission electron microscopy (TEM) discovered agglomerated clusters of spherical particles measuring around 150 nm in size. Including Bi3+ ions into the structure influenced the morphology of the sample showing fine packing of pyramidal-shaped nanoparticles. The uniform distribution of constitutive elements in the samples was confirmed by energy dispersive spectroscopy (EDS). Up-conversion emission properties were evaluated from photoluminescent emission spectra and intensity dependence on excitation power after excitation at 976 nm. Dominant green (550 nm), red (671 nm), and infrared (758 nm) 5F4, 5S2 → 5I8, 5F5 → 5I8, 5F4, 5S2 → 5I7 transition emissions, respectively, are detected in all samples. The sample co-doped with Bi3+ showed the most intense photoluminescent emission.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles
SP  - 113
EP  - 114
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11483
ER  - 

@conference{
author = "Stamenković, Tijana and Radmilović, Nadežda and Dinić, Ivana and Vuković, Marina and Barudžija, Tanja and Čebela, Maria and Lojpur, Vesna",
year = "2023",
abstract = "In this investigation, samples of SrGd2O4 doped with different Yb3+ (2, 4, 6 at.%) ions and constant Ho3+ (1 at.%) and Bi3+ (2 at.%) concentrations were prepared. The sol-gel method with glycine as a fuel and citric acid as a chelator was chosen for sample preparation. All samples were heated in the furnace for 1.5 h at 500 °C and then thermally treated for 2.5 h at 1000 °C. The pure orthorhombic lattice of SrGd2O4, space group Pnma, was revealed by X-ray diffraction (XRD) (JCPDS Card No.:01-072-6387). Transmission electron microscopy (TEM) discovered agglomerated clusters of spherical particles measuring around 150 nm in size. Including Bi3+ ions into the structure influenced the morphology of the sample showing fine packing of pyramidal-shaped nanoparticles. The uniform distribution of constitutive elements in the samples was confirmed by energy dispersive spectroscopy (EDS). Up-conversion emission properties were evaluated from photoluminescent emission spectra and intensity dependence on excitation power after excitation at 976 nm. Dominant green (550 nm), red (671 nm), and infrared (758 nm) 5F4, 5S2 → 5I8, 5F5 → 5I8, 5F4, 5S2 → 5I7 transition emissions, respectively, are detected in all samples. The sample co-doped with Bi3+ showed the most intense photoluminescent emission.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles",
pages = "113-114",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11483"
}

Stamenković, T., Radmilović, N., Dinić, I., Vuković, M., Barudžija, T., Čebela, M.,& Lojpur, V.. (2023). Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research., 113-114.
https://hdl.handle.net/21.15107/rcub_vinar_11483

Stamenković T, Radmilović N, Dinić I, Vuković M, Barudžija T, Čebela M, Lojpur V. Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;:113-114.
https://hdl.handle.net/21.15107/rcub_vinar_11483 .

Stamenković, Tijana, Radmilović, Nadežda, Dinić, Ivana, Vuković, Marina, Barudžija, Tanja, Čebela, Maria, Lojpur, Vesna, "Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023):113-114,
https://hdl.handle.net/21.15107/rcub_vinar_11483 .

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Radmilović, Nadežda
AU  - Barudžija, Tanja
AU  - Tomić, Miloš
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11579
AB  - In this investigation, samples of strontium-gadolinium-oxide (SrGd2O4) doped with different Yb3+ (2, 4 and 6 at%) and constant Ho3+ (1 at%) contents and co-doped with Bi3+ (2 at%) were prepared using the glycine-assisted sol–gel method. The pure orthorhombic SrGd2O4 phase, space group Pnma, was revealed using X-ray diffraction in all samples. Transmission electron microscopy discovered agglomerated clusters of spherical particles measuring approximately 150 nm in size. The inclusion of Bi3+ ions into the structure influenced the morphology since the formation of larger grains was observed, with sizes reaching up to ∼1.7 μm. The uniform distribution of all constitutive elements was confirmed by energy-dispersive X-ray spectroscopy. In all samples, up-conversion emission spectra revealed two dominant green (540 and 550 nm), red (671 nm), and infrared (758 nm) emission lines, due to the 5F4,5S2→5I8, 5F5→5I8, and 5F4,5S2 → 5I7 transitions, respectively. The sample co-doped with Bi3+ showed the most intense photoluminescent emissions, shorter luminescence decay, and the highest quantum yield. Additionally, a significant decrease in the energy band gap value was detected using diffuse reflectance spectroscopy for this sample. Methylene blue was used as a test pollutant to investigate its photocatalytic efficiency under simulated sunlight irradiation. The results show that Bi3+ co-doping deteriorates the photocatalytic efficiency of the SrGd2O4:Yb3+/Ho3+ phase by reducing hydroxyl radical formation.
T2  - Ceramics International
T1  - Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase
DO  - 10.1016/j.ceramint.2023.09.103
ER  - 

@article{
author = "Stamenković, Tijana and Dinić, Ivana and Vuković, Marina and Radmilović, Nadežda and Barudžija, Tanja and Tomić, Miloš and Mančić, Lidija and Lojpur, Vesna",
year = "2023",
abstract = "In this investigation, samples of strontium-gadolinium-oxide (SrGd2O4) doped with different Yb3+ (2, 4 and 6 at%) and constant Ho3+ (1 at%) contents and co-doped with Bi3+ (2 at%) were prepared using the glycine-assisted sol–gel method. The pure orthorhombic SrGd2O4 phase, space group Pnma, was revealed using X-ray diffraction in all samples. Transmission electron microscopy discovered agglomerated clusters of spherical particles measuring approximately 150 nm in size. The inclusion of Bi3+ ions into the structure influenced the morphology since the formation of larger grains was observed, with sizes reaching up to ∼1.7 μm. The uniform distribution of all constitutive elements was confirmed by energy-dispersive X-ray spectroscopy. In all samples, up-conversion emission spectra revealed two dominant green (540 and 550 nm), red (671 nm), and infrared (758 nm) emission lines, due to the 5F4,5S2→5I8, 5F5→5I8, and 5F4,5S2 → 5I7 transitions, respectively. The sample co-doped with Bi3+ showed the most intense photoluminescent emissions, shorter luminescence decay, and the highest quantum yield. Additionally, a significant decrease in the energy band gap value was detected using diffuse reflectance spectroscopy for this sample. Methylene blue was used as a test pollutant to investigate its photocatalytic efficiency under simulated sunlight irradiation. The results show that Bi3+ co-doping deteriorates the photocatalytic efficiency of the SrGd2O4:Yb3+/Ho3+ phase by reducing hydroxyl radical formation.",
journal = "Ceramics International",
title = "Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase",
doi = "10.1016/j.ceramint.2023.09.103"
}

Stamenković, T., Dinić, I., Vuković, M., Radmilović, N., Barudžija, T., Tomić, M., Mančić, L.,& Lojpur, V.. (2023). Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase. in Ceramics International.
https://doi.org/10.1016/j.ceramint.2023.09.103

Stamenković T, Dinić I, Vuković M, Radmilović N, Barudžija T, Tomić M, Mančić L, Lojpur V. Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase. in Ceramics International. 2023;.
doi:10.1016/j.ceramint.2023.09.103 .

Stamenković, Tijana, Dinić, Ivana, Vuković, Marina, Radmilović, Nadežda, Barudžija, Tanja, Tomić, Miloš, Mančić, Lidija, Lojpur, Vesna, "Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase" in Ceramics International (2023),
https://doi.org/10.1016/j.ceramint.2023.09.103 . .

TY  - CONF
AU  - Pavlović, Marija
AU  - Margetić, Aleksandra
AU  - Šokarda Slavić, Marinela
AU  - Ristović, Marina
AU  - Pavlović, Ratko
AU  - Nikolić, Stefan
AU  - Vujčić, Zoran
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11010
AB  - Pectinases are widely used in the fruit juice industry for clarification, liquefaction and stabilization of juices 1. One of the biggest problems in the production of fruit juices is the turbidity of the juice, which is mainly caused by the presence of pectin polysaccharides. Therefore, pectinase is used in juice clarification, which breaks down the pectin structure and reduces unwanted cloudiness and sediment2. In this work, the production of pectinases was optimized by solid state fermentation using Aspergillus tubingensis strain, which proved to be an efficient producer of these enzymes. Statistical method Design of Experiment was used to optimize the medium and conditions for enzyme production. The total pectinase activity obtained was determined by the DNS method (47 U/mL). Endo- pectinases activity is determined by reduction of viscosity of pectin solutions. The resulting complex of pectinase enzymes was used for the liquefaction of apricot and blueberry pulp, with a juice yield of 72% and 81%, respectively. Also, apricot juice treated with enzymes was clarified by 77% compared to juice that was not treated with enzymes. Blueberry juice obtained after treatment with pectinase enzymes has a higher antioxidant activity than the untreated juice, as determined by the DPPH assay.
PB  - Belgrade : Faculty of Chemistry : Serbian Biochemical Society
C3  - Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia
T1  - Production and application of pectinases in the liquefaction of apricot and blueberry juice
SP  - 115
EP  - 116
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11010
ER  - 

@conference{
author = "Pavlović, Marija and Margetić, Aleksandra and Šokarda Slavić, Marinela and Ristović, Marina and Pavlović, Ratko and Nikolić, Stefan and Vujčić, Zoran",
year = "2022",
abstract = "Pectinases are widely used in the fruit juice industry for clarification, liquefaction and stabilization of juices 1. One of the biggest problems in the production of fruit juices is the turbidity of the juice, which is mainly caused by the presence of pectin polysaccharides. Therefore, pectinase is used in juice clarification, which breaks down the pectin structure and reduces unwanted cloudiness and sediment2. In this work, the production of pectinases was optimized by solid state fermentation using Aspergillus tubingensis strain, which proved to be an efficient producer of these enzymes. Statistical method Design of Experiment was used to optimize the medium and conditions for enzyme production. The total pectinase activity obtained was determined by the DNS method (47 U/mL). Endo- pectinases activity is determined by reduction of viscosity of pectin solutions. The resulting complex of pectinase enzymes was used for the liquefaction of apricot and blueberry pulp, with a juice yield of 72% and 81%, respectively. Also, apricot juice treated with enzymes was clarified by 77% compared to juice that was not treated with enzymes. Blueberry juice obtained after treatment with pectinase enzymes has a higher antioxidant activity than the untreated juice, as determined by the DPPH assay.",
publisher = "Belgrade : Faculty of Chemistry : Serbian Biochemical Society",
journal = "Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia",
title = "Production and application of pectinases in the liquefaction of apricot and blueberry juice",
pages = "115-116",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11010"
}

Pavlović, M., Margetić, A., Šokarda Slavić, M., Ristović, M., Pavlović, R., Nikolić, S.,& Vujčić, Z.. (2022). Production and application of pectinases in the liquefaction of apricot and blueberry juice. in Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia
Belgrade : Faculty of Chemistry : Serbian Biochemical Society., 115-116.
https://hdl.handle.net/21.15107/rcub_vinar_11010

Pavlović M, Margetić A, Šokarda Slavić M, Ristović M, Pavlović R, Nikolić S, Vujčić Z. Production and application of pectinases in the liquefaction of apricot and blueberry juice. in Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia. 2022;:115-116.
https://hdl.handle.net/21.15107/rcub_vinar_11010 .

Pavlović, Marija, Margetić, Aleksandra, Šokarda Slavić, Marinela, Ristović, Marina, Pavlović, Ratko, Nikolić, Stefan, Vujčić, Zoran, "Production and application of pectinases in the liquefaction of apricot and blueberry juice" in Serbian Biochemical Society : 11th conference - "Amazing Biochemistry" : proceedings ; September 22-23, 2022; Novi Sad, Serbia (2022):115-116,
https://hdl.handle.net/21.15107/rcub_vinar_11010 .

TY  - JOUR
AU  - Stanković, Dalibor M.
AU  - Mirković, Marija
AU  - Pavlović, Vladimir B.
AU  - Petronijević, Ivan M.
AU  - Jeremić, Dejan
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10600
AB  - Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.
T2  - Russian Journal of Inorganic Chemistry
T1  - Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid
VL  - 67
IS  - Suppl. 1
SP  - S13
EP  - S21
DO  - 10.1134/S003602362260201X
ER  - 

@article{
author = "Stanković, Dalibor M. and Mirković, Marija and Pavlović, Vladimir B. and Petronijević, Ivan M. and Jeremić, Dejan and Anđelković, Ljubica and Šuljagić, Marija",
year = "2022",
abstract = "Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Inorganic Chemistry",
title = "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid",
volume = "67",
number = "Suppl. 1",
pages = "S13-S21",
doi = "10.1134/S003602362260201X"
}

Stanković, D. M., Mirković, M., Pavlović, V. B., Petronijević, I. M., Jeremić, D., Anđelković, L.,& Šuljagić, M.. (2022). Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry, 67(Suppl. 1), S13-S21.
https://doi.org/10.1134/S003602362260201X

Stanković DM, Mirković M, Pavlović VB, Petronijević IM, Jeremić D, Anđelković L, Šuljagić M. Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry. 2022;67(Suppl. 1):S13-S21.
doi:10.1134/S003602362260201X .

Stanković, Dalibor M., Mirković, Marija, Pavlović, Vladimir B., Petronijević, Ivan M., Jeremić, Dejan, Anđelković, Ljubica, Šuljagić, Marija, "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid" in Russian Journal of Inorganic Chemistry, 67, no. Suppl. 1 (2022):S13-S21,
https://doi.org/10.1134/S003602362260201X . .

TY  - JOUR
AU  - Mirković, Marija D.
AU  - Radović, Magdalena
AU  - Stanković, Dalibor M.
AU  - Vranješ-Đurić, Sanja
AU  - Janković, Drina
AU  - Petrović, Djordje
AU  - Mihajlović-Lalić, Ljiljana E.
AU  - Prijović, Željko
AU  - Milanović, Zorana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10169
AB  - Two new Schiff base cobalt(III) ([Co(LH)Cl2], 1) and nickel(II) ([Ni(LH)ClO4], 2) complexes with a diimine-dioxime ligand, (4,9-diaza-3,10-diethyl-3,9-dodecadiene-2,11-dione bis oxime (LH2)), were synthesized and characterized. The compounds were obtained in MeOH from corresponding metal salts and LH2 in molar ratio 1:1 and further characterized by mass spectrometry, IR spectroscopy, electrochemistry, and elemental analysis. Previously reported copper(II) analog ([Cu2(LH)2]·(ClO4)2, 3) was joined to 1 and 2, and the three metal analogs, 1–3, were further investigated in terms of their electrochemical behavior. Binding studies of the complexes with deoxyribonucleic acid (DNA) and human serum albumin (HSA) were carried out using both spectrophotometric and electrochemical methods. All three complexes exhibit binding affinity towards the DNA chain through intercalative interactions. The binding reaction with HSA showed for 1 and 3 decrease in the peak current obtained in the case of complexes before the addition of HSA, while the Ni complex–HSA possesses the same electroactivity as starting complex. The cytotoxicity of LH2 as well as its metal complexes, and cisplatin were evaluated on CT-26 mouse colon carcinoma and human LS174T cancer cell lines employing MTT assay. The copper(II) complex exhibited very promising anticancer activity compared with cisplatin.
T2  - Journal of Coordination Chemistry
T1  - Co(III), Ni(II) and Cu(II) complexes with a tetradentate Schiff base ligand: synthesis, characterization, electrochemical behavior, binding assessment and in vitro cytotoxicity
IS  - 1-2
SP  - 211
EP  - 224
DO  - 10.1080/00958972.2022.2032683
ER  - 

@article{
author = "Mirković, Marija D. and Radović, Magdalena and Stanković, Dalibor M. and Vranješ-Đurić, Sanja and Janković, Drina and Petrović, Djordje and Mihajlović-Lalić, Ljiljana E. and Prijović, Željko and Milanović, Zorana",
year = "2022",
abstract = "Two new Schiff base cobalt(III) ([Co(LH)Cl2], 1) and nickel(II) ([Ni(LH)ClO4], 2) complexes with a diimine-dioxime ligand, (4,9-diaza-3,10-diethyl-3,9-dodecadiene-2,11-dione bis oxime (LH2)), were synthesized and characterized. The compounds were obtained in MeOH from corresponding metal salts and LH2 in molar ratio 1:1 and further characterized by mass spectrometry, IR spectroscopy, electrochemistry, and elemental analysis. Previously reported copper(II) analog ([Cu2(LH)2]·(ClO4)2, 3) was joined to 1 and 2, and the three metal analogs, 1–3, were further investigated in terms of their electrochemical behavior. Binding studies of the complexes with deoxyribonucleic acid (DNA) and human serum albumin (HSA) were carried out using both spectrophotometric and electrochemical methods. All three complexes exhibit binding affinity towards the DNA chain through intercalative interactions. The binding reaction with HSA showed for 1 and 3 decrease in the peak current obtained in the case of complexes before the addition of HSA, while the Ni complex–HSA possesses the same electroactivity as starting complex. The cytotoxicity of LH2 as well as its metal complexes, and cisplatin were evaluated on CT-26 mouse colon carcinoma and human LS174T cancer cell lines employing MTT assay. The copper(II) complex exhibited very promising anticancer activity compared with cisplatin.",
journal = "Journal of Coordination Chemistry",
title = "Co(III), Ni(II) and Cu(II) complexes with a tetradentate Schiff base ligand: synthesis, characterization, electrochemical behavior, binding assessment and in vitro cytotoxicity",
number = "1-2",
pages = "211-224",
doi = "10.1080/00958972.2022.2032683"
}

Mirković, M. D., Radović, M., Stanković, D. M., Vranješ-Đurić, S., Janković, D., Petrović, D., Mihajlović-Lalić, L. E., Prijović, Ž.,& Milanović, Z.. (2022). Co(III), Ni(II) and Cu(II) complexes with a tetradentate Schiff base ligand: synthesis, characterization, electrochemical behavior, binding assessment and in vitro cytotoxicity. in Journal of Coordination Chemistry(1-2), 211-224.
https://doi.org/10.1080/00958972.2022.2032683

Mirković MD, Radović M, Stanković DM, Vranješ-Đurić S, Janković D, Petrović D, Mihajlović-Lalić LE, Prijović Ž, Milanović Z. Co(III), Ni(II) and Cu(II) complexes with a tetradentate Schiff base ligand: synthesis, characterization, electrochemical behavior, binding assessment and in vitro cytotoxicity. in Journal of Coordination Chemistry. 2022;(1-2):211-224.
doi:10.1080/00958972.2022.2032683 .

Mirković, Marija D., Radović, Magdalena, Stanković, Dalibor M., Vranješ-Đurić, Sanja, Janković, Drina, Petrović, Djordje, Mihajlović-Lalić, Ljiljana E., Prijović, Željko, Milanović, Zorana, "Co(III), Ni(II) and Cu(II) complexes with a tetradentate Schiff base ligand: synthesis, characterization, electrochemical behavior, binding assessment and in vitro cytotoxicity" in Journal of Coordination Chemistry, no. 1-2 (2022):211-224,
https://doi.org/10.1080/00958972.2022.2032683 . .

TY  - JOUR
AU  - Mihajlović-Lalić, Ljiljana E.
AU  - Stanković, Dalibor M.
AU  - Novaković, Irena T.
AU  - Grgurić-Šipka, Sanja
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10344
AB  - Three ruthenium-bipyridine complexes (1–3) carrying acetylpyridine ligand unit were synthesized in methanol via the reaction of [RuCl2(bpy)2] with corresponding acetylpyridine (2-, 3-, and 4-acpy). Obtained complexes were characterized by (1H and 13C) NMR and IR spectroscopy, MS spectrometry, UV‒vis spectrophotometry, and cyclic voltammetry. Their structural characterization revealed bidentate coordination mode for 2-acpy while 3- and 4-acpy acted as monodentate ligands. The electrochemical profile of newly synthesized compounds was investigated by cyclic voltammetry which confirmed their electrochemical activity. Voltammetric responses within the −1.20 < Ep < 1.50 V range of potentials were summarized in two major events: Ru(II)→Ru(III) oxidation spotted at app. ΔEp = 0.65 V and successive reductions of bpy units located from ‒0.79 V to 0.47 V (vs. Ag/AgCl (3 M) electrode). The DNA-binding activity of the complexes was evaluated by both UV‒vis spectrophotometry and cyclic voltammetry indicating DNA-intercalation with a slight contribution of electrostatic interactions. Furthermore, antimicrobial activity was tested against bacterial and fungal strains, for which moderate activity was observed. Assessment of in vitro toxicity against freshly hatched nauplii of Artemia salina as well as radical scavenging capacity was evaluated. The test compounds showed neither toxicity nor antioxidant activity.
T2  - Journal of Coordination Chemistry
T1  - (Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs
SP  - 1
EP  - 15
DO  - 10.1080/00958972.2022.2090247
ER  - 

@article{
author = "Mihajlović-Lalić, Ljiljana E. and Stanković, Dalibor M. and Novaković, Irena T. and Grgurić-Šipka, Sanja",
year = "2022",
abstract = "Three ruthenium-bipyridine complexes (1–3) carrying acetylpyridine ligand unit were synthesized in methanol via the reaction of [RuCl2(bpy)2] with corresponding acetylpyridine (2-, 3-, and 4-acpy). Obtained complexes were characterized by (1H and 13C) NMR and IR spectroscopy, MS spectrometry, UV‒vis spectrophotometry, and cyclic voltammetry. Their structural characterization revealed bidentate coordination mode for 2-acpy while 3- and 4-acpy acted as monodentate ligands. The electrochemical profile of newly synthesized compounds was investigated by cyclic voltammetry which confirmed their electrochemical activity. Voltammetric responses within the −1.20 < Ep < 1.50 V range of potentials were summarized in two major events: Ru(II)→Ru(III) oxidation spotted at app. ΔEp = 0.65 V and successive reductions of bpy units located from ‒0.79 V to 0.47 V (vs. Ag/AgCl (3 M) electrode). The DNA-binding activity of the complexes was evaluated by both UV‒vis spectrophotometry and cyclic voltammetry indicating DNA-intercalation with a slight contribution of electrostatic interactions. Furthermore, antimicrobial activity was tested against bacterial and fungal strains, for which moderate activity was observed. Assessment of in vitro toxicity against freshly hatched nauplii of Artemia salina as well as radical scavenging capacity was evaluated. The test compounds showed neither toxicity nor antioxidant activity.",
journal = "Journal of Coordination Chemistry",
title = "(Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs",
pages = "1-15",
doi = "10.1080/00958972.2022.2090247"
}

Mihajlović-Lalić, L. E., Stanković, D. M., Novaković, I. T.,& Grgurić-Šipka, S.. (2022). (Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs. in Journal of Coordination Chemistry, 1-15.
https://doi.org/10.1080/00958972.2022.2090247

Mihajlović-Lalić LE, Stanković DM, Novaković IT, Grgurić-Šipka S. (Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs. in Journal of Coordination Chemistry. 2022;:1-15.
doi:10.1080/00958972.2022.2090247 .

Mihajlović-Lalić, Ljiljana E., Stanković, Dalibor M., Novaković, Irena T., Grgurić-Šipka, Sanja, "(Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs" in Journal of Coordination Chemistry (2022):1-15,
https://doi.org/10.1080/00958972.2022.2090247 . .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Anđelković, Ljubica
AU  - Olćan, Dragan
AU  - Petrović, Jovana S.
AU  - Mirković, Miljana M.
AU  - Pavlović, Vladimir B.
AU  - Jeremić, Dejan
AU  - Vlahović, Branislav
AU  - Đorđević, Antonije
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9410
AB  - Solid-state reaction between BaTiO3and Fe2O3was used to produce a multiferroic heterostructure composite. Commercial BaTiO3and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300 °C for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3with Fe2O3resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature. © 2021 Authors. Published by association for ETRAN Society.
T2  - Science of Sintering
T1  - Multiferroic heterostructure BaTiO3/ε-Fe2O3 composite obtained by in situ reaction
VL  - 53
IS  - 1
SP  - 1
EP  - 8
DO  - 10.2298/SOS2101001F
ER  - 

@article{
author = "Filipović, Suzana and Obradović, Nina and Anđelković, Ljubica and Olćan, Dragan and Petrović, Jovana S. and Mirković, Miljana M. and Pavlović, Vladimir B. and Jeremić, Dejan and Vlahović, Branislav and Đorđević, Antonije",
year = "2021",
abstract = "Solid-state reaction between BaTiO3and Fe2O3was used to produce a multiferroic heterostructure composite. Commercial BaTiO3and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300 °C for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3with Fe2O3resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature. © 2021 Authors. Published by association for ETRAN Society.",
journal = "Science of Sintering",
title = "Multiferroic heterostructure BaTiO3/ε-Fe2O3 composite obtained by in situ reaction",
volume = "53",
number = "1",
pages = "1-8",
doi = "10.2298/SOS2101001F"
}

Filipović, S., Obradović, N., Anđelković, L., Olćan, D., Petrović, J. S., Mirković, M. M., Pavlović, V. B., Jeremić, D., Vlahović, B.,& Đorđević, A.. (2021). Multiferroic heterostructure BaTiO3/ε-Fe2O3 composite obtained by in situ reaction. in Science of Sintering, 53(1), 1-8.
https://doi.org/10.2298/SOS2101001F

Filipović S, Obradović N, Anđelković L, Olćan D, Petrović JS, Mirković MM, Pavlović VB, Jeremić D, Vlahović B, Đorđević A. Multiferroic heterostructure BaTiO3/ε-Fe2O3 composite obtained by in situ reaction. in Science of Sintering. 2021;53(1):1-8.
doi:10.2298/SOS2101001F .

Filipović, Suzana, Obradović, Nina, Anđelković, Ljubica, Olćan, Dragan, Petrović, Jovana S., Mirković, Miljana M., Pavlović, Vladimir B., Jeremić, Dejan, Vlahović, Branislav, Đorđević, Antonije, "Multiferroic heterostructure BaTiO3/ε-Fe2O3 composite obtained by in situ reaction" in Science of Sintering, 53, no. 1 (2021):1-8,
https://doi.org/10.2298/SOS2101001F . .