TY  - CONF
AU  - Pagnacco, Maja
AU  - Maksimović, Jelena
AU  - Potkonjak, Nebojša
AU  - Simović Pavlović, Marina
AU  - Nikolić, Zoran
AU  - Vasiljević, Darko
AU  - Kolarić, Branko
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7076
AB  - A non-equilibrium process, i.e., the state I (low concentration of iodide and iodine) to the state II (high concentration of iodide and iodine) transition, occurring after oscillatory Briggs-Rauscher reaction, was monitored by fast camera. The experiment's goal was not only to monitor the release of oxygen and the phase transition but also to use patterns formed by oxygen bubbles to get new insight into the kinetics of the process and the formation of solid iodine. To the best of our knowledge, it is the first time that an oxygen bubble pattern obtained by a fast camera has been used to analyze oscillatory system dynamics.
PB  - Belgian Physical Society
C3  - General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium
T1  - Monitoring the Formation of Oxygen Bubble Patterns  as a Forecast for Reaction Dynamics
SP  - QPMAO6
EP  - QPMAO6
UR  - https://hdl.handle.net/21.15107/rcub_cer_7076
ER  - 

@conference{
author = "Pagnacco, Maja and Maksimović, Jelena and Potkonjak, Nebojša and Simović Pavlović, Marina and Nikolić, Zoran and Vasiljević, Darko and Kolarić, Branko",
year = "2023",
abstract = "A non-equilibrium process, i.e., the state I (low concentration of iodide and iodine) to the state II (high concentration of iodide and iodine) transition, occurring after oscillatory Briggs-Rauscher reaction, was monitored by fast camera. The experiment's goal was not only to monitor the release of oxygen and the phase transition but also to use patterns formed by oxygen bubbles to get new insight into the kinetics of the process and the formation of solid iodine. To the best of our knowledge, it is the first time that an oxygen bubble pattern obtained by a fast camera has been used to analyze oscillatory system dynamics.",
publisher = "Belgian Physical Society",
journal = "General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium",
title = "Monitoring the Formation of Oxygen Bubble Patterns  as a Forecast for Reaction Dynamics",
pages = "QPMAO6-QPMAO6",
url = "https://hdl.handle.net/21.15107/rcub_cer_7076"
}

Pagnacco, M., Maksimović, J., Potkonjak, N., Simović Pavlović, M., Nikolić, Z., Vasiljević, D.,& Kolarić, B.. (2023). Monitoring the Formation of Oxygen Bubble Patterns  as a Forecast for Reaction Dynamics. in General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium
Belgian Physical Society., QPMAO6-QPMAO6.
https://hdl.handle.net/21.15107/rcub_cer_7076

Pagnacco M, Maksimović J, Potkonjak N, Simović Pavlović M, Nikolić Z, Vasiljević D, Kolarić B. Monitoring the Formation of Oxygen Bubble Patterns  as a Forecast for Reaction Dynamics. in General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium. 2023;:QPMAO6-QPMAO6.
https://hdl.handle.net/21.15107/rcub_cer_7076 .

Pagnacco, Maja, Maksimović, Jelena, Potkonjak, Nebojša, Simović Pavlović, Marina, Nikolić, Zoran, Vasiljević, Darko, Kolarić, Branko, "Monitoring the Formation of Oxygen Bubble Patterns  as a Forecast for Reaction Dynamics" in General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium (2023):QPMAO6-QPMAO6,
https://hdl.handle.net/21.15107/rcub_cer_7076 .

TY  - JOUR
AU  - Potkonjak, Nebojsa I.
AU  - Veselinović, Dragan S.
AU  - Novaković, Miroslav
AU  - Gorjanović, Stanislava Ž.
AU  - Pezo, Lato
AU  - Suznjevic, Desanka Z.
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1128
AB  - Antioxidant activity (AO) of commercial propolis extracts (PEs), available on Serbian market, was determined by direct current (DC) polarography. Polarographic anodic current of 5.0 mmol L-1 alkaline solution of H2O2 was recorded at potentials of mercury dissolution. Decrease of the current was plotted against the volume of gradually added PEs. The volume of PE causing 20% current decrease was determined from the linear part of the plot. Antioxidant activity was expressed in H2O2 equivalent (HPEq), representing the volume of PE that corresponds to 1.0 mmol L-1 H2O2 decrease. Resulting HPEq ranged between 1.71 +/- 0.11 and 8.00 +/- 0.18 mu L. Range of 1,1-dipheny1-2-picryl hydrazyl (DPPH) radical scavenging activity was from 0.093 +/- 0.004% to 0.346 +/- 0.006%. Total phenolic content (TCP) of PE with superior AO activity was 5.31 +/- 0.05%g GAE, while the extract with the lowest activity contained 1.45 +/- 0.02%g GAE. Antioxidant activity, determined by polarographic method, was correlated with DPPH scavenging activity (R-2 = 0.991) and TCP (R-2 = 0.985). Validity of obtained results was further confirmed using ANOVA and post hoc Tukey HSD test.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Food and Chemical Toxicology
T1  - Antioxidant activity of propolis extracts from Serbia: A polarographic approach
VL  - 50
IS  - 10
SP  - 3614
EP  - 3618
DO  - 10.1016/j.fct.2012.07.029
ER  - 

@article{
author = "Potkonjak, Nebojsa I. and Veselinović, Dragan S. and Novaković, Miroslav and Gorjanović, Stanislava Ž. and Pezo, Lato and Suznjevic, Desanka Z.",
year = "2012",
abstract = "Antioxidant activity (AO) of commercial propolis extracts (PEs), available on Serbian market, was determined by direct current (DC) polarography. Polarographic anodic current of 5.0 mmol L-1 alkaline solution of H2O2 was recorded at potentials of mercury dissolution. Decrease of the current was plotted against the volume of gradually added PEs. The volume of PE causing 20% current decrease was determined from the linear part of the plot. Antioxidant activity was expressed in H2O2 equivalent (HPEq), representing the volume of PE that corresponds to 1.0 mmol L-1 H2O2 decrease. Resulting HPEq ranged between 1.71 +/- 0.11 and 8.00 +/- 0.18 mu L. Range of 1,1-dipheny1-2-picryl hydrazyl (DPPH) radical scavenging activity was from 0.093 +/- 0.004% to 0.346 +/- 0.006%. Total phenolic content (TCP) of PE with superior AO activity was 5.31 +/- 0.05%g GAE, while the extract with the lowest activity contained 1.45 +/- 0.02%g GAE. Antioxidant activity, determined by polarographic method, was correlated with DPPH scavenging activity (R-2 = 0.991) and TCP (R-2 = 0.985). Validity of obtained results was further confirmed using ANOVA and post hoc Tukey HSD test.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Food and Chemical Toxicology",
title = "Antioxidant activity of propolis extracts from Serbia: A polarographic approach",
volume = "50",
number = "10",
pages = "3614-3618",
doi = "10.1016/j.fct.2012.07.029"
}

Potkonjak, N. I., Veselinović, D. S., Novaković, M., Gorjanović, S. Ž., Pezo, L.,& Suznjevic, D. Z.. (2012). Antioxidant activity of propolis extracts from Serbia: A polarographic approach. in Food and Chemical Toxicology
Oxford : Pergamon-Elsevier Science Ltd., 50(10), 3614-3618.
https://doi.org/10.1016/j.fct.2012.07.029

Potkonjak NI, Veselinović DS, Novaković M, Gorjanović SŽ, Pezo L, Suznjevic DZ. Antioxidant activity of propolis extracts from Serbia: A polarographic approach. in Food and Chemical Toxicology. 2012;50(10):3614-3618.
doi:10.1016/j.fct.2012.07.029 .

Potkonjak, Nebojsa I., Veselinović, Dragan S., Novaković, Miroslav, Gorjanović, Stanislava Ž., Pezo, Lato, Suznjevic, Desanka Z., "Antioxidant activity of propolis extracts from Serbia: A polarographic approach" in Food and Chemical Toxicology, 50, no. 10 (2012):3614-3618,
https://doi.org/10.1016/j.fct.2012.07.029 . .