Obradović, Bojana

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  • Obradović, Bojana (2)
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Author's Bibliography

Sustained release of lignin model compound dehydrogenate polymer (DHP) from alginate beads

Spasojević, Dragica; Stanković, Mira; Prokopijević, Miloš; Prodanović, Olivera; Stojkovska, Jasmina; Obradović, Bojana; Radotić, Ksenija

(Prirodno-matematički fakultet Novi Sad, 2021)

TY  - CONF
AU  - Spasojević, Dragica
AU  - Stanković, Mira
AU  - Prokopijević, Miloš
AU  - Prodanović, Olivera
AU  - Stojkovska, Jasmina
AU  - Obradović, Bojana
AU  - Radotić, Ksenija
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1759
AB  - INTRODUCTION:
Alginate dressings are widely used in the treatment of exuding wounds29. The enzymatically synthesized lignin model compound dehydrogenate polymer (DHP) from coniferyl alcohol by the enzyme peroxidase, is the best lignin substitute used in
various experiments30. In our previous work, we have shown that synthesized DHP has antibacterial and antibiofilm properties, and in combination with alginate has good potential for wound treatment31.
OBJECTIVES:
The objective of this paper was to study the sustained release of DHP from low and medium viscosity alginate beads.
PB  - Prirodno-matematički fakultet Novi Sad
C3  - International Bioscience Conference and the 8th International PSU – UNS Bioscience Conference IBSC2021
T1  - Sustained release of lignin model compound dehydrogenate polymer (DHP) from alginate beads
EP  - 133
SP  - 132
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1759
ER  - 
@conference{
author = "Spasojević, Dragica and Stanković, Mira and Prokopijević, Miloš and Prodanović, Olivera and Stojkovska, Jasmina and Obradović, Bojana and Radotić, Ksenija",
year = "2021",
abstract = "INTRODUCTION:
Alginate dressings are widely used in the treatment of exuding wounds29. The enzymatically synthesized lignin model compound dehydrogenate polymer (DHP) from coniferyl alcohol by the enzyme peroxidase, is the best lignin substitute used in
various experiments30. In our previous work, we have shown that synthesized DHP has antibacterial and antibiofilm properties, and in combination with alginate has good potential for wound treatment31.
OBJECTIVES:
The objective of this paper was to study the sustained release of DHP from low and medium viscosity alginate beads.",
publisher = "Prirodno-matematički fakultet Novi Sad",
journal = "International Bioscience Conference and the 8th International PSU – UNS Bioscience Conference IBSC2021",
title = "Sustained release of lignin model compound dehydrogenate polymer (DHP) from alginate beads",
pages = "133-132",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1759"
}
Spasojević, D., Stanković, M., Prokopijević, M., Prodanović, O., Stojkovska, J., Obradović, B.,& Radotić, K.. (2021). Sustained release of lignin model compound dehydrogenate polymer (DHP) from alginate beads. in International Bioscience Conference and the 8th International PSU – UNS Bioscience Conference IBSC2021
Prirodno-matematički fakultet Novi Sad., 132-133.
https://hdl.handle.net/21.15107/rcub_rimsi_1759
Spasojević D, Stanković M, Prokopijević M, Prodanović O, Stojkovska J, Obradović B, Radotić K. Sustained release of lignin model compound dehydrogenate polymer (DHP) from alginate beads. in International Bioscience Conference and the 8th International PSU – UNS Bioscience Conference IBSC2021. 2021;:132-133.
https://hdl.handle.net/21.15107/rcub_rimsi_1759 .
Spasojević, Dragica, Stanković, Mira, Prokopijević, Miloš, Prodanović, Olivera, Stojkovska, Jasmina, Obradović, Bojana, Radotić, Ksenija, "Sustained release of lignin model compound dehydrogenate polymer (DHP) from alginate beads" in International Bioscience Conference and the 8th International PSU – UNS Bioscience Conference IBSC2021 (2021):132-133,
https://hdl.handle.net/21.15107/rcub_rimsi_1759 .

Adsorption studies of lignin model compounds on activated charcoal particles

Petrović , Jelena; Osmokrović, Andrea; Spasojević, Dragica; Radotić, Ksenija; Obradović, Bojana

(Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Beograd, Srbija, 2017)

TY  - CONF
AU  - Petrović , Jelena
AU  - Osmokrović, Andrea
AU  - Spasojević, Dragica
AU  - Radotić, Ksenija
AU  - Obradović, Bojana
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2805
AB  - In this work we have investigated possibilities for immobilization of lignin model
compounds (LMCs) as potential antimicrobial agents on activated charcoal particles aimed
for applications in wound dressings. LMC adsorption kinetics was determined for different
initial LMC concentrations (0.1, 0.5 and 1.1 mg ml-1) by using UV-visible spectroscopy over
24 h when the equilibrium was reached. LMC adsorption on charcoal particles was
confirmed by Fourier-transform infrared spectroscopy (FTIR). Adsorption kinetics was
successfully modeled by the pseudo-second order Lagergren model while the adsorption
isotherm at room temperature could be described by both Freundlich and Langmuir models
showing satisfactory agreements. The maximal capacity of activated charcoal particles for
LMCs according to the Langmuir model was 312.5 mg g-1. However, the immobilizates did
not exhibit antibacterial activity against Pseudomonas aeruginosa indicating the need for
further studies of LMC adsorption mechanism with the specific aim to elucidate exact
compounds or functional groups responsible for antimicrobial action and their conformation
on activated charcoal.
PB  - Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Beograd, Srbija
C3  - 16th Young Researchers Conference – Materials Science and Engineering
T1  - Adsorption studies of lignin model compounds on activated charcoal particles
SP  - 10
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2805
ER  - 
@conference{
author = "Petrović , Jelena and Osmokrović, Andrea and Spasojević, Dragica and Radotić, Ksenija and Obradović, Bojana",
year = "2017",
abstract = "In this work we have investigated possibilities for immobilization of lignin model
compounds (LMCs) as potential antimicrobial agents on activated charcoal particles aimed
for applications in wound dressings. LMC adsorption kinetics was determined for different
initial LMC concentrations (0.1, 0.5 and 1.1 mg ml-1) by using UV-visible spectroscopy over
24 h when the equilibrium was reached. LMC adsorption on charcoal particles was
confirmed by Fourier-transform infrared spectroscopy (FTIR). Adsorption kinetics was
successfully modeled by the pseudo-second order Lagergren model while the adsorption
isotherm at room temperature could be described by both Freundlich and Langmuir models
showing satisfactory agreements. The maximal capacity of activated charcoal particles for
LMCs according to the Langmuir model was 312.5 mg g-1. However, the immobilizates did
not exhibit antibacterial activity against Pseudomonas aeruginosa indicating the need for
further studies of LMC adsorption mechanism with the specific aim to elucidate exact
compounds or functional groups responsible for antimicrobial action and their conformation
on activated charcoal.",
publisher = "Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Beograd, Srbija",
journal = "16th Young Researchers Conference – Materials Science and Engineering",
title = "Adsorption studies of lignin model compounds on activated charcoal particles",
pages = "10",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2805"
}
Petrović , J., Osmokrović, A., Spasojević, D., Radotić, K.,& Obradović, B.. (2017). Adsorption studies of lignin model compounds on activated charcoal particles. in 16th Young Researchers Conference – Materials Science and Engineering
Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Beograd, Srbija., 10.
https://hdl.handle.net/21.15107/rcub_rimsi_2805
Petrović  J, Osmokrović A, Spasojević D, Radotić K, Obradović B. Adsorption studies of lignin model compounds on activated charcoal particles. in 16th Young Researchers Conference – Materials Science and Engineering. 2017;:10.
https://hdl.handle.net/21.15107/rcub_rimsi_2805 .
Petrović , Jelena, Osmokrović, Andrea, Spasojević, Dragica, Radotić, Ksenija, Obradović, Bojana, "Adsorption studies of lignin model compounds on activated charcoal particles" in 16th Young Researchers Conference – Materials Science and Engineering (2017):10,
https://hdl.handle.net/21.15107/rcub_rimsi_2805 .