TY  - JOUR
AU  - Nakarada, Đura
AU  - Pejin, Boris
AU  - Dimić, Dušan
AU  - Ivanović-Šašić, Ana
AU  - Mojović, Zorica
AU  - Mojović, Miloš
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3027
AB  - The electrochemistry of catecholamine neurotransmitters and their precursor l-dopa has been widely studied due to their relevance as biologically important compounds. The detection of these compounds from aqueous solution is hindered by the coexistence of quinone or hydroquinone. However, it was suggested that quinones adsorbed on the electrode surface can enhance catechol detection. In order to estimate the degree of interaction between quinones and l-dopa, cyclic voltammetry and UV-Vis spectroscopic study was performed. A sesquiterpenoid hydroquinone, isolated from the marine sponge Dysidea avara (avarol), has been used in this study. The change of apparent heterogeneous rate constant with different avarol/l-dopa ratio indicated that charge transfer could be enhanced at some extent. In addition to this, the obtained results for avarol and hydroquinone (its structural element) were compared. UV-Vis spectroscopic analysis confirmed interaction between l-dopa and avarol or hydroquinone. Taken all together, the interaction of l-dopa was stronger with hydroquinone than with avarol, presumably reflecting the conformational restrains of avarol caused by its terpenoid moiety.
PB  - Springer
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - Electrochemical and spectroscopic study of l‑dopa interaction with avarol
VL  - 127
IS  - 1
SP  - 219
EP  - 229
DO  - 10.1007/s11144-019-01575-z
ER  - 

@article{
author = "Nakarada, Đura and Pejin, Boris and Dimić, Dušan and Ivanović-Šašić, Ana and Mojović, Zorica and Mojović, Miloš",
year = "2019",
abstract = "The electrochemistry of catecholamine neurotransmitters and their precursor l-dopa has been widely studied due to their relevance as biologically important compounds. The detection of these compounds from aqueous solution is hindered by the coexistence of quinone or hydroquinone. However, it was suggested that quinones adsorbed on the electrode surface can enhance catechol detection. In order to estimate the degree of interaction between quinones and l-dopa, cyclic voltammetry and UV-Vis spectroscopic study was performed. A sesquiterpenoid hydroquinone, isolated from the marine sponge Dysidea avara (avarol), has been used in this study. The change of apparent heterogeneous rate constant with different avarol/l-dopa ratio indicated that charge transfer could be enhanced at some extent. In addition to this, the obtained results for avarol and hydroquinone (its structural element) were compared. UV-Vis spectroscopic analysis confirmed interaction between l-dopa and avarol or hydroquinone. Taken all together, the interaction of l-dopa was stronger with hydroquinone than with avarol, presumably reflecting the conformational restrains of avarol caused by its terpenoid moiety.",
publisher = "Springer",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "Electrochemical and spectroscopic study of l‑dopa interaction with avarol",
volume = "127",
number = "1",
pages = "219-229",
doi = "10.1007/s11144-019-01575-z"
}

Nakarada, Đ., Pejin, B., Dimić, D., Ivanović-Šašić, A., Mojović, Z.,& Mojović, M.. (2019). Electrochemical and spectroscopic study of l‑dopa interaction with avarol. in Reaction Kinetics, Mechanisms and Catalysis
Springer., 127(1), 219-229.
https://doi.org/10.1007/s11144-019-01575-z

Nakarada Đ, Pejin B, Dimić D, Ivanović-Šašić A, Mojović Z, Mojović M. Electrochemical and spectroscopic study of l‑dopa interaction with avarol. in Reaction Kinetics, Mechanisms and Catalysis. 2019;127(1):219-229.
doi:10.1007/s11144-019-01575-z .

Nakarada, Đura, Pejin, Boris, Dimić, Dušan, Ivanović-Šašić, Ana, Mojović, Zorica, Mojović, Miloš, "Electrochemical and spectroscopic study of l‑dopa interaction with avarol" in Reaction Kinetics, Mechanisms and Catalysis, 127, no. 1 (2019):219-229,
https://doi.org/10.1007/s11144-019-01575-z . .

TY  - JOUR
AU  - Jović-Jovičić, Nataša
AU  - Mojović, Miloš
AU  - Stanković, Dalibor
AU  - Nedić-Vasiljević, Bojana
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2507
AB  - Series of alkylammonium modified smectites with different alkylammoinum/clay ratios was synthesized (H series). The obtained organoclays were used as precursors for carbon-clay composite materials (C series). Both set of materials were characterized by X-ray diffraction (XRD), point of zero charge (pH(PZC)), N-2 adsorption-desorption isotherms, Raman spectroscopy and electron paramagnetic resonance (EPR) analysis. XRD analysis of organomodified clays confirmed incorporation of HDTMA(+) into interlamellar space of smectite. Series of carbonized clays showed constant d(001) value of 1.4 nm. The pH(PZC) of two series differed indicating that carbonization changed the profile of pH dependent sites on the clay surface. Textural properties of the H series decreased throughout the series, while in the C series the most developed porous structure was obtained for sample where HDTMA(+) loading was equal to cation exchange capacity. Raman spectroscopy showed that amorphous carbon was formed during carbonization process. The obtained materials were used as modifiers of carbon paste electrode and investigated using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry. The comparison of electrochemical behavior of H series and C series showed the importance of interlamellar species for charge transfer process. The investigation of influence of composition of carbon paste and form of added carbon showed that performance of carbon-clay based electrodes depended on synergy of different factors.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Electrochimica Acta
T1  - Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay
VL  - 296
SP  - 387
EP  - 396
DO  - 10.1016/j.electacta.2018.11.031
ER  - 

@article{
author = "Jović-Jovičić, Nataša and Mojović, Miloš and Stanković, Dalibor and Nedić-Vasiljević, Bojana and Milutinović Nikolić, Aleksandra and Banković, Predrag and Mojović, Zorica",
year = "2019",
abstract = "Series of alkylammonium modified smectites with different alkylammoinum/clay ratios was synthesized (H series). The obtained organoclays were used as precursors for carbon-clay composite materials (C series). Both set of materials were characterized by X-ray diffraction (XRD), point of zero charge (pH(PZC)), N-2 adsorption-desorption isotherms, Raman spectroscopy and electron paramagnetic resonance (EPR) analysis. XRD analysis of organomodified clays confirmed incorporation of HDTMA(+) into interlamellar space of smectite. Series of carbonized clays showed constant d(001) value of 1.4 nm. The pH(PZC) of two series differed indicating that carbonization changed the profile of pH dependent sites on the clay surface. Textural properties of the H series decreased throughout the series, while in the C series the most developed porous structure was obtained for sample where HDTMA(+) loading was equal to cation exchange capacity. Raman spectroscopy showed that amorphous carbon was formed during carbonization process. The obtained materials were used as modifiers of carbon paste electrode and investigated using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry. The comparison of electrochemical behavior of H series and C series showed the importance of interlamellar species for charge transfer process. The investigation of influence of composition of carbon paste and form of added carbon showed that performance of carbon-clay based electrodes depended on synergy of different factors.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay",
volume = "296",
pages = "387-396",
doi = "10.1016/j.electacta.2018.11.031"
}

Jović-Jovičić, N., Mojović, M., Stanković, D., Nedić-Vasiljević, B., Milutinović Nikolić, A., Banković, P.,& Mojović, Z.. (2019). Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 296, 387-396.
https://doi.org/10.1016/j.electacta.2018.11.031

Jović-Jovičić N, Mojović M, Stanković D, Nedić-Vasiljević B, Milutinović Nikolić A, Banković P, Mojović Z. Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. in Electrochimica Acta. 2019;296:387-396.
doi:10.1016/j.electacta.2018.11.031 .

Jović-Jovičić, Nataša, Mojović, Miloš, Stanković, Dalibor, Nedić-Vasiljević, Bojana, Milutinović Nikolić, Aleksandra, Banković, Predrag, Mojović, Zorica, "Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay" in Electrochimica Acta, 296 (2019):387-396,
https://doi.org/10.1016/j.electacta.2018.11.031 . .

TY  - JOUR
AU  - Jović-Jovičić, Nataša
AU  - Mojović, Miloš
AU  - Stanković, Dalibor
AU  - Nedić-Vasiljević, Bojana
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2507
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2625
AB  - Series of alkylammonium modified smectites with different alkylammoinum/clay ratios was synthesized (H series). The obtained organoclays were used as precursors for carbon-clay composite materials (C series). Both set of materials were characterized by X-ray diffraction (XRD), point of zero charge (pH(PZC)), N-2 adsorption-desorption isotherms, Raman spectroscopy and electron paramagnetic resonance (EPR) analysis. XRD analysis of organomodified clays confirmed incorporation of HDTMA(+) into interlamellar space of smectite. Series of carbonized clays showed constant d(001) value of 1.4 nm. The pH(PZC) of two series differed indicating that carbonization changed the profile of pH dependent sites on the clay surface. Textural properties of the H series decreased throughout the series, while in the C series the most developed porous structure was obtained for sample where HDTMA(+) loading was equal to cation exchange capacity. Raman spectroscopy showed that amorphous carbon was formed during carbonization process. The obtained materials were used as modifiers of carbon paste electrode and investigated using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry. The comparison of electrochemical behavior of H series and C series showed the importance of interlamellar species for charge transfer process. The investigation of influence of composition of carbon paste and form of added carbon showed that performance of carbon-clay based electrodes depended on synergy of different factors.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Electrochimica Acta
T1  - Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay
VL  - 296
SP  - 387
EP  - 396
DO  - 10.1016/j.electacta.2018.11.031
ER  - 

@article{
author = "Jović-Jovičić, Nataša and Mojović, Miloš and Stanković, Dalibor and Nedić-Vasiljević, Bojana and Milutinović Nikolić, Aleksandra and Banković, Predrag and Mojović, Zorica",
year = "2019",
abstract = "Series of alkylammonium modified smectites with different alkylammoinum/clay ratios was synthesized (H series). The obtained organoclays were used as precursors for carbon-clay composite materials (C series). Both set of materials were characterized by X-ray diffraction (XRD), point of zero charge (pH(PZC)), N-2 adsorption-desorption isotherms, Raman spectroscopy and electron paramagnetic resonance (EPR) analysis. XRD analysis of organomodified clays confirmed incorporation of HDTMA(+) into interlamellar space of smectite. Series of carbonized clays showed constant d(001) value of 1.4 nm. The pH(PZC) of two series differed indicating that carbonization changed the profile of pH dependent sites on the clay surface. Textural properties of the H series decreased throughout the series, while in the C series the most developed porous structure was obtained for sample where HDTMA(+) loading was equal to cation exchange capacity. Raman spectroscopy showed that amorphous carbon was formed during carbonization process. The obtained materials were used as modifiers of carbon paste electrode and investigated using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry. The comparison of electrochemical behavior of H series and C series showed the importance of interlamellar species for charge transfer process. The investigation of influence of composition of carbon paste and form of added carbon showed that performance of carbon-clay based electrodes depended on synergy of different factors.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay",
volume = "296",
pages = "387-396",
doi = "10.1016/j.electacta.2018.11.031"
}

Jović-Jovičić, N., Mojović, M., Stanković, D., Nedić-Vasiljević, B., Milutinović Nikolić, A., Banković, P.,& Mojović, Z.. (2019). Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 296, 387-396.
https://doi.org/10.1016/j.electacta.2018.11.031

Jović-Jovičić N, Mojović M, Stanković D, Nedić-Vasiljević B, Milutinović Nikolić A, Banković P, Mojović Z. Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. in Electrochimica Acta. 2019;296:387-396.
doi:10.1016/j.electacta.2018.11.031 .

Jović-Jovičić, Nataša, Mojović, Miloš, Stanković, Dalibor, Nedić-Vasiljević, Bojana, Milutinović Nikolić, Aleksandra, Banković, Predrag, Mojović, Zorica, "Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay" in Electrochimica Acta, 296 (2019):387-396,
https://doi.org/10.1016/j.electacta.2018.11.031 . .

TY  - JOUR
AU  - Mojović, Zorica
AU  - Novaković, Tatjana
AU  - Mojović, Miloš
AU  - Barudžija, Tanja
AU  - Mitrić, Miodrag
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3248
AB  - Alumina powders, pure and doped with nickel, were synthetized by sol-gel method and calcined at 500, 900 and 1100°C in order to obtain mesoporous structures with a high specific surface area, well adapTab. to catalytic application. The characterization of samples was performed by XRD, EPR spectroscopy and electrochemical impedance spectroscopy (EIS). XRD analysis showed that the addition of Ni2+, as well as the annealing temperature, affects the structural properties of the obtained composites. EPR analysis revealed the traces of Fe3+ impurities, the presence of oxy defects in alumina and Ni2+ in tetrahedral position for samples calcined at 1100°C. The impedance of the Nafion/alumina modified GCE depended on combined effect of porous structure and surface properties of alumina samples. The electrochemical behavior of a glassy carbon electrode modified with Ni (II)-doped aluminas was studied in 0.5 M NaOH solution, with and without methanol. The electrochemical activity of nickel-doped alumina composites was dictated by the amount of present NiO impurity.
AB  - Прахови алумине, без додатка и са додатком никла, синтетисани су сол-гел методом и жарени на 500, 900 и 1100 oC с циљем да се добију мезопорозне структуре са високом специфичном површином, применљиве у каталитичке сврхе. Карактеризација узорака вршена је са XRD, EPR и EIS спектроскопијом. XRD анализа показала је да и додатак Ni2+-јона, као и температура жарења, утичу на структурне особине добијених композита. EPR анализом утврђено је присуство Fe3+-јона у траговима, окси-дефеката у алумини и Ni2+-јона у тетраедарским позицијама у узорцима жареним на 1100 oC. Импеданса стакло-карбон електроде модификоване нафион/алумином, зависила је од комбинованог ефекта порозне структуре и површинских карактеристика узорака алумине. Електрохемијско понашање модификоване стакло-карбон електроде испитивано је у 0.5M раствору NaOH, без и са метанолом. Електрохемијска активност никл-алумина композита диктирана је присуством NiO фазе.
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function
VL  - 51
IS  - 3
SP  - 339
EP  - 351
DO  - 10.2298/SOS1903339M
ER  - 

@article{
author = "Mojović, Zorica and Novaković, Tatjana and Mojović, Miloš and Barudžija, Tanja and Mitrić, Miodrag",
year = "2019",
abstract = "Alumina powders, pure and doped with nickel, were synthetized by sol-gel method and calcined at 500, 900 and 1100°C in order to obtain mesoporous structures with a high specific surface area, well adapTab. to catalytic application. The characterization of samples was performed by XRD, EPR spectroscopy and electrochemical impedance spectroscopy (EIS). XRD analysis showed that the addition of Ni2+, as well as the annealing temperature, affects the structural properties of the obtained composites. EPR analysis revealed the traces of Fe3+ impurities, the presence of oxy defects in alumina and Ni2+ in tetrahedral position for samples calcined at 1100°C. The impedance of the Nafion/alumina modified GCE depended on combined effect of porous structure and surface properties of alumina samples. The electrochemical behavior of a glassy carbon electrode modified with Ni (II)-doped aluminas was studied in 0.5 M NaOH solution, with and without methanol. The electrochemical activity of nickel-doped alumina composites was dictated by the amount of present NiO impurity., Прахови алумине, без додатка и са додатком никла, синтетисани су сол-гел методом и жарени на 500, 900 и 1100 oC с циљем да се добију мезопорозне структуре са високом специфичном површином, применљиве у каталитичке сврхе. Карактеризација узорака вршена је са XRD, EPR и EIS спектроскопијом. XRD анализа показала је да и додатак Ni2+-јона, као и температура жарења, утичу на структурне особине добијених композита. EPR анализом утврђено је присуство Fe3+-јона у траговима, окси-дефеката у алумини и Ni2+-јона у тетраедарским позицијама у узорцима жареним на 1100 oC. Импеданса стакло-карбон електроде модификоване нафион/алумином, зависила је од комбинованог ефекта порозне структуре и површинских карактеристика узорака алумине. Електрохемијско понашање модификоване стакло-карбон електроде испитивано је у 0.5M раствору NaOH, без и са метанолом. Електрохемијска активност никл-алумина композита диктирана је присуством NiO фазе.",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function",
volume = "51",
number = "3",
pages = "339-351",
doi = "10.2298/SOS1903339M"
}

Mojović, Z., Novaković, T., Mojović, M., Barudžija, T.,& Mitrić, M.. (2019). Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 51(3), 339-351.
https://doi.org/10.2298/SOS1903339M

Mojović Z, Novaković T, Mojović M, Barudžija T, Mitrić M. Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function. in Science of Sintering. 2019;51(3):339-351.
doi:10.2298/SOS1903339M .

Mojović, Zorica, Novaković, Tatjana, Mojović, Miloš, Barudžija, Tanja, Mitrić, Miodrag, "Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function" in Science of Sintering, 51, no. 3 (2019):339-351,
https://doi.org/10.2298/SOS1903339M . .

TY  - JOUR
AU  - Jović-Jovičić, Nataša
AU  - Mojović, Zorica
AU  - Mojović, Miloš
AU  - Banković, Predrag
AU  - Ajduković, Marija
AU  - Milutinović Nikolić, Aleksandra
AU  - Jovanović, Dušan M.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2196
AB  - Glassy carbon electrode was modified with different synthesized hybrid clay-based materials and tested in alkaline solution with and without H2O2. The hybrid materials were obtained by immobilizing hemoglobin (Hb) on acid activated (AA) clay, or on AA clay modified with different sodium dodecyl sul-fate (SDS) loadings. The obtained materials were characterized using DR UV vis and ESR spectroscopy, elemental analysis, and SEM. The characterization confirmed higher degree of hemoglobin incorpora-tion in the presence of SDS. The presence of SDS on the surface of clay particles resulted in the partial oxidation/denaturation of hemoglobin and formation of hemichrome. Cyclic voltammetry was used for the investigation of the electrochemical behavior of immobilized hemoglobin in alkaline solution. Two cathodic peaks at -0.45 V and -0.70 V were recorded and ascribed to the reduction of heme Fe(III)/Fe(II), and formation of HbFe(I) - highly reduced form of hemoglobin respectively. The latter peak reflects hemoglobin denaturation. The presence of H2O2 in the alkaline solution increased current intensities corresponding to both peaks (-0.45 V and -0.7 V). Linear response of peak current intensity vs. H2O2 concentration was monitored for all investigated samples within different H2O2 concentration ranges. The AA-SDSI.0-Hb electrode exhibited the highest current response with linear regression equation in the following form: I(mu A)= 7.99 +1.056 x1f1202] (mM) (R=0.996). The limit of detection of 28 mu M was estimated using the 3 sigma method. Different modified electrodes exhibited different degrees of denaturation resistance. The obtained val-ues of Michaelis-Menten constant indicated that prolonged cycling in the presence of SDS increases protein denaturation.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Electrochemical behavior of immobilized hemoglobin in alkaline solution
VL  - 400
SP  - 347
EP  - 354
DO  - 10.1016/j.apsusc.2016.12.151
ER  - 

@article{
author = "Jović-Jovičić, Nataša and Mojović, Zorica and Mojović, Miloš and Banković, Predrag and Ajduković, Marija and Milutinović Nikolić, Aleksandra and Jovanović, Dušan M.",
year = "2017",
abstract = "Glassy carbon electrode was modified with different synthesized hybrid clay-based materials and tested in alkaline solution with and without H2O2. The hybrid materials were obtained by immobilizing hemoglobin (Hb) on acid activated (AA) clay, or on AA clay modified with different sodium dodecyl sul-fate (SDS) loadings. The obtained materials were characterized using DR UV vis and ESR spectroscopy, elemental analysis, and SEM. The characterization confirmed higher degree of hemoglobin incorpora-tion in the presence of SDS. The presence of SDS on the surface of clay particles resulted in the partial oxidation/denaturation of hemoglobin and formation of hemichrome. Cyclic voltammetry was used for the investigation of the electrochemical behavior of immobilized hemoglobin in alkaline solution. Two cathodic peaks at -0.45 V and -0.70 V were recorded and ascribed to the reduction of heme Fe(III)/Fe(II), and formation of HbFe(I) - highly reduced form of hemoglobin respectively. The latter peak reflects hemoglobin denaturation. The presence of H2O2 in the alkaline solution increased current intensities corresponding to both peaks (-0.45 V and -0.7 V). Linear response of peak current intensity vs. H2O2 concentration was monitored for all investigated samples within different H2O2 concentration ranges. The AA-SDSI.0-Hb electrode exhibited the highest current response with linear regression equation in the following form: I(mu A)= 7.99 +1.056 x1f1202] (mM) (R=0.996). The limit of detection of 28 mu M was estimated using the 3 sigma method. Different modified electrodes exhibited different degrees of denaturation resistance. The obtained val-ues of Michaelis-Menten constant indicated that prolonged cycling in the presence of SDS increases protein denaturation.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Electrochemical behavior of immobilized hemoglobin in alkaline solution",
volume = "400",
pages = "347-354",
doi = "10.1016/j.apsusc.2016.12.151"
}

Jović-Jovičić, N., Mojović, Z., Mojović, M., Banković, P., Ajduković, M., Milutinović Nikolić, A.,& Jovanović, D. M.. (2017). Electrochemical behavior of immobilized hemoglobin in alkaline solution. in Applied Surface Science
Elsevier., 400, 347-354.
https://doi.org/10.1016/j.apsusc.2016.12.151

Jović-Jovičić N, Mojović Z, Mojović M, Banković P, Ajduković M, Milutinović Nikolić A, Jovanović DM. Electrochemical behavior of immobilized hemoglobin in alkaline solution. in Applied Surface Science. 2017;400:347-354.
doi:10.1016/j.apsusc.2016.12.151 .

Jović-Jovičić, Nataša, Mojović, Zorica, Mojović, Miloš, Banković, Predrag, Ajduković, Marija, Milutinović Nikolić, Aleksandra, Jovanović, Dušan M., "Electrochemical behavior of immobilized hemoglobin in alkaline solution" in Applied Surface Science, 400 (2017):347-354,
https://doi.org/10.1016/j.apsusc.2016.12.151 . .

TY  - JOUR
AU  - Mudrinić, Tihana
AU  - Mojović, Zorica
AU  - Milutinović Nikolić, Aleksandra
AU  - Mojović, Miloš
AU  - Žunić, Marija
AU  - Vukelić, Nikola
AU  - Jovanović, Dušan M.
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1682
AB  - Bentonite originated from Macji Do, Serbia, was submitted to acid treatment at 70 degrees C for 30 min, while only the concentration of applied HCl varied. The obtained acid treated samples were used to modify glassy carbon (GC) electrode. The effect of applied acid treatment on the electrochemical behavior of GC electrodes modified with these materials was investigated. Furthermore, the effect of the introduction of nickel into acid treated samples was studied. The incorporation of nickel into acid treated bentonite was achieved by either ion exchange or impregnation/decomposition method. The obtained samples were characterized using the following methods: inductively coupled plasma (ICP), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and electron spin resonance (ESR) spectroscopy. The electrochemical behavior of these samples was tested by cyclic voltammetry in 0.1 mol dm(-3) H2SO4 solution. The ICP, FUR and ESR results exhibited a slight decrease of iron content in the acid treated samples. XRD and FTIR results confirmed that the conditions applied for the acid treatment were mild enough for the smectite structure to be preserved. The electrocatalytic test showed that the current response of Fe2+/Fe3+ oxidation/reduction process increased on the GC electrodes separately modified with each of the acid treated samples in comparison with current obtained on the GC electrode modified with untreated sample. These results indicated that applied acid treatment probably increased the accessibility of the electroactive iron within smectite. Cyclic voltammograms obtained for the GC electrodes modified with acid treated bentonite materials showed greater anodic charge (q(a)) than cathodic charge (q(c)). This difference might be due to iron detachment from smectite structure during the oxidation process. Further modification of the selected acid treated sample with nickel species resulted in decreased current response of the Fe2+/Fe3+ oxidation/reduction process and improved the reversibility of this process.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Electrochemical activity of iron in acid treated bentonite and influence of added nickel
VL  - 353
SP  - 1037
EP  - 1045
DO  - 10.1016/j.apsusc.2015.07.054
ER  - 

@article{
author = "Mudrinić, Tihana and Mojović, Zorica and Milutinović Nikolić, Aleksandra and Mojović, Miloš and Žunić, Marija and Vukelić, Nikola and Jovanović, Dušan M.",
year = "2015",
abstract = "Bentonite originated from Macji Do, Serbia, was submitted to acid treatment at 70 degrees C for 30 min, while only the concentration of applied HCl varied. The obtained acid treated samples were used to modify glassy carbon (GC) electrode. The effect of applied acid treatment on the electrochemical behavior of GC electrodes modified with these materials was investigated. Furthermore, the effect of the introduction of nickel into acid treated samples was studied. The incorporation of nickel into acid treated bentonite was achieved by either ion exchange or impregnation/decomposition method. The obtained samples were characterized using the following methods: inductively coupled plasma (ICP), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and electron spin resonance (ESR) spectroscopy. The electrochemical behavior of these samples was tested by cyclic voltammetry in 0.1 mol dm(-3) H2SO4 solution. The ICP, FUR and ESR results exhibited a slight decrease of iron content in the acid treated samples. XRD and FTIR results confirmed that the conditions applied for the acid treatment were mild enough for the smectite structure to be preserved. The electrocatalytic test showed that the current response of Fe2+/Fe3+ oxidation/reduction process increased on the GC electrodes separately modified with each of the acid treated samples in comparison with current obtained on the GC electrode modified with untreated sample. These results indicated that applied acid treatment probably increased the accessibility of the electroactive iron within smectite. Cyclic voltammograms obtained for the GC electrodes modified with acid treated bentonite materials showed greater anodic charge (q(a)) than cathodic charge (q(c)). This difference might be due to iron detachment from smectite structure during the oxidation process. Further modification of the selected acid treated sample with nickel species resulted in decreased current response of the Fe2+/Fe3+ oxidation/reduction process and improved the reversibility of this process.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Electrochemical activity of iron in acid treated bentonite and influence of added nickel",
volume = "353",
pages = "1037-1045",
doi = "10.1016/j.apsusc.2015.07.054"
}

Mudrinić, T., Mojović, Z., Milutinović Nikolić, A., Mojović, M., Žunić, M., Vukelić, N.,& Jovanović, D. M.. (2015). Electrochemical activity of iron in acid treated bentonite and influence of added nickel. in Applied Surface Science
Elsevier., 353, 1037-1045.
https://doi.org/10.1016/j.apsusc.2015.07.054

Mudrinić T, Mojović Z, Milutinović Nikolić A, Mojović M, Žunić M, Vukelić N, Jovanović DM. Electrochemical activity of iron in acid treated bentonite and influence of added nickel. in Applied Surface Science. 2015;353:1037-1045.
doi:10.1016/j.apsusc.2015.07.054 .

Mudrinić, Tihana, Mojović, Zorica, Milutinović Nikolić, Aleksandra, Mojović, Miloš, Žunić, Marija, Vukelić, Nikola, Jovanović, Dušan M., "Electrochemical activity of iron in acid treated bentonite and influence of added nickel" in Applied Surface Science, 353 (2015):1037-1045,
https://doi.org/10.1016/j.apsusc.2015.07.054 . .

TY  - JOUR
AU  - Bolic, Bojana
AU  - Mijuskovic, Ana
AU  - Popovic-Bijelic, Ana
AU  - Nikolić-Kokić, Aleksandra
AU  - Spasić, Snežana
AU  - Blagojevic, Dusko
AU  - Spasić, Mihajlo
AU  - Spasojević, Ivan
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1787
AB  - Interactions of hydrogen sulfide (HS-/H2S), a reducing signaling species, with superoxide dimutases (SOD) are poorly understood. We applied low-T EPR spectroscopy to examine the effects of HS-/H2S and superoxide radical anion (O-2(-)) on metallocenters of FeSOD, MnSOD, and CuZnSOD. HS-/H2S did not affect FeSOD, whereas active centers of MnSOD and CuZnSOD were open to this agent. Cu2+ was reduced to Cu1+, while manganese appears to be released from MnSOD active center. Untreated and O-2(-) treated FeSOD and MnSOD predominantly show 5 d-electron systems, i.e. Fe3+ and Mn2+. Our study provides new details on the mechanisms of (patho)physiological effects of HS-/H2S.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Nitric Oxide-Biology and Chemistry
T1  - Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study
VL  - 51
SP  - 19
EP  - 23
DO  - 10.1016/j.niox.2015.09.008
ER  - 

@article{
author = "Bolic, Bojana and Mijuskovic, Ana and Popovic-Bijelic, Ana and Nikolić-Kokić, Aleksandra and Spasić, Snežana and Blagojevic, Dusko and Spasić, Mihajlo and Spasojević, Ivan",
year = "2015",
abstract = "Interactions of hydrogen sulfide (HS-/H2S), a reducing signaling species, with superoxide dimutases (SOD) are poorly understood. We applied low-T EPR spectroscopy to examine the effects of HS-/H2S and superoxide radical anion (O-2(-)) on metallocenters of FeSOD, MnSOD, and CuZnSOD. HS-/H2S did not affect FeSOD, whereas active centers of MnSOD and CuZnSOD were open to this agent. Cu2+ was reduced to Cu1+, while manganese appears to be released from MnSOD active center. Untreated and O-2(-) treated FeSOD and MnSOD predominantly show 5 d-electron systems, i.e. Fe3+ and Mn2+. Our study provides new details on the mechanisms of (patho)physiological effects of HS-/H2S.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Nitric Oxide-Biology and Chemistry",
title = "Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study",
volume = "51",
pages = "19-23",
doi = "10.1016/j.niox.2015.09.008"
}

Bolic, B., Mijuskovic, A., Popovic-Bijelic, A., Nikolić-Kokić, A., Spasić, S., Blagojevic, D., Spasić, M.,& Spasojević, I.. (2015). Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study. in Nitric Oxide-Biology and Chemistry
Academic Press Inc Elsevier Science, San Diego., 51, 19-23.
https://doi.org/10.1016/j.niox.2015.09.008

Bolic B, Mijuskovic A, Popovic-Bijelic A, Nikolić-Kokić A, Spasić S, Blagojevic D, Spasić M, Spasojević I. Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study. in Nitric Oxide-Biology and Chemistry. 2015;51:19-23.
doi:10.1016/j.niox.2015.09.008 .

Bolic, Bojana, Mijuskovic, Ana, Popovic-Bijelic, Ana, Nikolić-Kokić, Aleksandra, Spasić, Snežana, Blagojevic, Dusko, Spasić, Mihajlo, Spasojević, Ivan, "Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study" in Nitric Oxide-Biology and Chemistry, 51 (2015):19-23,
https://doi.org/10.1016/j.niox.2015.09.008 . .

TY  - JOUR
AU  - Bolic, Bojana
AU  - Mijuskovic, Ana
AU  - Popovic-Bijelic, Ana
AU  - Nikolić-Kokić, Aleksandra
AU  - Spasić, Snežana
AU  - Blagojevic, Dusko
AU  - Spasić, Mihajlo
AU  - Spasojević, Ivan
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3187
AB  - Interactions of hydrogen sulfide (HS-/H2S), a reducing signaling species, with superoxide dimutases (SOD) are poorly understood. We applied low-T EPR spectroscopy to examine the effects of HS-/H2S and superoxide radical anion (O-2(-)) on metallocenters of FeSOD, MnSOD, and CuZnSOD. HS-/H2S did not affect FeSOD, whereas active centers of MnSOD and CuZnSOD were open to this agent. Cu2+ was reduced to Cu1+, while manganese appears to be released from MnSOD active center. Untreated and O-2(-) treated FeSOD and MnSOD predominantly show 5 d-electron systems, i.e. Fe3+ and Mn2+. Our study provides new details on the mechanisms of (patho)physiological effects of HS-/H2S.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Nitric Oxide-Biology and Chemistry
T1  - Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study
VL  - 51
SP  - 19
EP  - 23
DO  - 10.1016/j.niox.2015.09.008
ER  - 

@article{
author = "Bolic, Bojana and Mijuskovic, Ana and Popovic-Bijelic, Ana and Nikolić-Kokić, Aleksandra and Spasić, Snežana and Blagojevic, Dusko and Spasić, Mihajlo and Spasojević, Ivan",
year = "2015",
abstract = "Interactions of hydrogen sulfide (HS-/H2S), a reducing signaling species, with superoxide dimutases (SOD) are poorly understood. We applied low-T EPR spectroscopy to examine the effects of HS-/H2S and superoxide radical anion (O-2(-)) on metallocenters of FeSOD, MnSOD, and CuZnSOD. HS-/H2S did not affect FeSOD, whereas active centers of MnSOD and CuZnSOD were open to this agent. Cu2+ was reduced to Cu1+, while manganese appears to be released from MnSOD active center. Untreated and O-2(-) treated FeSOD and MnSOD predominantly show 5 d-electron systems, i.e. Fe3+ and Mn2+. Our study provides new details on the mechanisms of (patho)physiological effects of HS-/H2S.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Nitric Oxide-Biology and Chemistry",
title = "Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study",
volume = "51",
pages = "19-23",
doi = "10.1016/j.niox.2015.09.008"
}

Bolic, B., Mijuskovic, A., Popovic-Bijelic, A., Nikolić-Kokić, A., Spasić, S., Blagojevic, D., Spasić, M.,& Spasojević, I.. (2015). Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study. in Nitric Oxide-Biology and Chemistry
Academic Press Inc Elsevier Science, San Diego., 51, 19-23.
https://doi.org/10.1016/j.niox.2015.09.008

Bolic B, Mijuskovic A, Popovic-Bijelic A, Nikolić-Kokić A, Spasić S, Blagojevic D, Spasić M, Spasojević I. Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study. in Nitric Oxide-Biology and Chemistry. 2015;51:19-23.
doi:10.1016/j.niox.2015.09.008 .

Bolic, Bojana, Mijuskovic, Ana, Popovic-Bijelic, Ana, Nikolić-Kokić, Aleksandra, Spasić, Snežana, Blagojevic, Dusko, Spasić, Mihajlo, Spasojević, Ivan, "Reactions of superoxide dismutases with HS-/H2S and superoxide radical anion: An in vitro EPR study" in Nitric Oxide-Biology and Chemistry, 51 (2015):19-23,
https://doi.org/10.1016/j.niox.2015.09.008 . .

TY  - JOUR
AU  - Pejin, Boris
AU  - Nakarada, Đura
AU  - Novaković, Miroslav
AU  - Tešević, Vele
AU  - Savic, Aleksandar
AU  - Radotić, Ksenija
AU  - Mojović, Miloš
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1568
AB  - Two volatile samples of the bryozoan Hyalinella punctata (seasonally collected from the same locality) were isolated (hydrodistillation, Clevenger apparatus), identified (GC and GC-MS) and screened in vitro (EPR) for anti-hydroxyl radical activity. The main components of sample 1 (2-ethyl-1-hexanol 37.00%, dodecanol 21.40% and hexanal 8.40%) and sample 2 (2-ethyl-1-hexanol 30.50%, 7-tridecanol 24.60% and 1-hexadecanol 11.80%) were relatively similar. However, more components were present in the sample 2 (17 and 25, respectively). EPR measurements indicated significant anti-hydroxyl radical activity of the both samples (75.00 +/- 6.00% and 87.00 +/- 8.00%, respectively) whereas the generation of other types of free radicals in reaction with hydroxyl radicals was not observed. According to the best of our knowledge, this is the first report of 31 organic compounds from the phylum Bryozoa. Alcohols, aldehydes, ketones, esters and ethers of lower molecular mass appear to be characteristic for the volatiles of these organisms commonly known as moss animals.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Natural Product Research
T1  - Antioxidant volatiles of the freshwater bryozoan Hyalinella punctata
VL  - 28
IS  - 18
SP  - 1471
EP  - 1475
DO  - 10.1080/14786419.2014.905565
ER  - 

@article{
author = "Pejin, Boris and Nakarada, Đura and Novaković, Miroslav and Tešević, Vele and Savic, Aleksandar and Radotić, Ksenija and Mojović, Miloš",
year = "2014",
abstract = "Two volatile samples of the bryozoan Hyalinella punctata (seasonally collected from the same locality) were isolated (hydrodistillation, Clevenger apparatus), identified (GC and GC-MS) and screened in vitro (EPR) for anti-hydroxyl radical activity. The main components of sample 1 (2-ethyl-1-hexanol 37.00%, dodecanol 21.40% and hexanal 8.40%) and sample 2 (2-ethyl-1-hexanol 30.50%, 7-tridecanol 24.60% and 1-hexadecanol 11.80%) were relatively similar. However, more components were present in the sample 2 (17 and 25, respectively). EPR measurements indicated significant anti-hydroxyl radical activity of the both samples (75.00 +/- 6.00% and 87.00 +/- 8.00%, respectively) whereas the generation of other types of free radicals in reaction with hydroxyl radicals was not observed. According to the best of our knowledge, this is the first report of 31 organic compounds from the phylum Bryozoa. Alcohols, aldehydes, ketones, esters and ethers of lower molecular mass appear to be characteristic for the volatiles of these organisms commonly known as moss animals.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Natural Product Research",
title = "Antioxidant volatiles of the freshwater bryozoan Hyalinella punctata",
volume = "28",
number = "18",
pages = "1471-1475",
doi = "10.1080/14786419.2014.905565"
}

Pejin, B., Nakarada, Đ., Novaković, M., Tešević, V., Savic, A., Radotić, K.,& Mojović, M.. (2014). Antioxidant volatiles of the freshwater bryozoan Hyalinella punctata. in Natural Product Research
Taylor & Francis Ltd, Abingdon., 28(18), 1471-1475.
https://doi.org/10.1080/14786419.2014.905565

Pejin B, Nakarada Đ, Novaković M, Tešević V, Savic A, Radotić K, Mojović M. Antioxidant volatiles of the freshwater bryozoan Hyalinella punctata. in Natural Product Research. 2014;28(18):1471-1475.
doi:10.1080/14786419.2014.905565 .

Pejin, Boris, Nakarada, Đura, Novaković, Miroslav, Tešević, Vele, Savic, Aleksandar, Radotić, Ksenija, Mojović, Miloš, "Antioxidant volatiles of the freshwater bryozoan Hyalinella punctata" in Natural Product Research, 28, no. 18 (2014):1471-1475,
https://doi.org/10.1080/14786419.2014.905565 . .

TY  - CONF
AU  - Mudrinić, Tihana
AU  - Mojović, Zorica
AU  - Jovanović, Dušan
AU  - Ignjatović, Aleksandar
AU  - Mojović, Miloš
AU  - Bačić, Goran
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6826
AB  - The diagnosis of amyotrophic lateral sclerosis (ALS) based on ALS functional rating scale-revised (ALSFRS-R) scores is often shown be unreliable and false. On the other hand, magnetic resonance imaging (MRI) studies of a brain of ALS patients showed the presence of iron deposits in the precentral gyruses of gray matter (PGGM) and also the potential leakage of iron to cerebro-spinal fluid (CSF) through compromised blood-brain barrier. The aim of this study was to determine if there is a specific feature in CSF that distinguishes patients with ALS from the control subjects. CSF obtained from ALS patients and normal controls were analyzed using the technique of cyclic voltammetry. The results show that at the potential of 1.1 – 1.2 V vs. Ag/AgCl electrode, the plateau appeared and the potential of oxygen evolution with shifted toward more positive values from the ALS patients. These voltammogram features were not present for the control patients showing this technique to be promising candidate for evaluating new biomarkers for ALS.
PB  - Biophysical Society of Serbia
C3  - Proceedings - Regional Biophysics Conference 2012, September 03-07, Kladovo-Belgrade, Serbia
T1  - Cyclic voltammetry in diagnosis of ALS
SP  - 23
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_cer_6826
ER  - 

@conference{
author = "Mudrinić, Tihana and Mojović, Zorica and Jovanović, Dušan and Ignjatović, Aleksandar and Mojović, Miloš and Bačić, Goran",
year = "2012",
abstract = "The diagnosis of amyotrophic lateral sclerosis (ALS) based on ALS functional rating scale-revised (ALSFRS-R) scores is often shown be unreliable and false. On the other hand, magnetic resonance imaging (MRI) studies of a brain of ALS patients showed the presence of iron deposits in the precentral gyruses of gray matter (PGGM) and also the potential leakage of iron to cerebro-spinal fluid (CSF) through compromised blood-brain barrier. The aim of this study was to determine if there is a specific feature in CSF that distinguishes patients with ALS from the control subjects. CSF obtained from ALS patients and normal controls were analyzed using the technique of cyclic voltammetry. The results show that at the potential of 1.1 – 1.2 V vs. Ag/AgCl electrode, the plateau appeared and the potential of oxygen evolution with shifted toward more positive values from the ALS patients. These voltammogram features were not present for the control patients showing this technique to be promising candidate for evaluating new biomarkers for ALS.",
publisher = "Biophysical Society of Serbia",
journal = "Proceedings - Regional Biophysics Conference 2012, September 03-07, Kladovo-Belgrade, Serbia",
title = "Cyclic voltammetry in diagnosis of ALS",
pages = "23-25",
url = "https://hdl.handle.net/21.15107/rcub_cer_6826"
}

Mudrinić, T., Mojović, Z., Jovanović, D., Ignjatović, A., Mojović, M.,& Bačić, G.. (2012). Cyclic voltammetry in diagnosis of ALS. in Proceedings - Regional Biophysics Conference 2012, September 03-07, Kladovo-Belgrade, Serbia
Biophysical Society of Serbia., 23-25.
https://hdl.handle.net/21.15107/rcub_cer_6826

Mudrinić T, Mojović Z, Jovanović D, Ignjatović A, Mojović M, Bačić G. Cyclic voltammetry in diagnosis of ALS. in Proceedings - Regional Biophysics Conference 2012, September 03-07, Kladovo-Belgrade, Serbia. 2012;:23-25.
https://hdl.handle.net/21.15107/rcub_cer_6826 .

Mudrinić, Tihana, Mojović, Zorica, Jovanović, Dušan, Ignjatović, Aleksandar, Mojović, Miloš, Bačić, Goran, "Cyclic voltammetry in diagnosis of ALS" in Proceedings - Regional Biophysics Conference 2012, September 03-07, Kladovo-Belgrade, Serbia (2012):23-25,
https://hdl.handle.net/21.15107/rcub_cer_6826 .