Tadić, Tamara

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  • Tadić, Tamara (2)

Author's Bibliography

Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite

Tadić, Tamara; Marković, Bojana; Vuković, Zorica; Stefanov, Plamen; Maksin, Danijela; Nastasović, Aleksandra; Onjia, Antonije

(MDPI, 2023)

TY  - JOUR
AU  - Tadić, Tamara
AU  - Marković, Bojana
AU  - Vuković, Zorica
AU  - Stefanov, Plamen
AU  - Maksin, Danijela
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6990
AB  - A novel porous gold polymer composite was prepared by the functionalization of a glycidyl methacrylate-based copolymer (pGME) with ethylene diamine (pGME-en), and activation by gold (pGME-en/Au), in a simple batch adsorption procedure in an acid solution, at room temperature. Detailed characterization of the pGME-en before and after activation was performed. The main focuses of this research were the design of a method that can enable the recovery of gold and the reuse of this multipurpose sorbent as an antimicrobial agent. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis pointed out amine groups as the primary binding sites for Au activation, while hydroxyl groups also contributed to the chelation reaction. pGME-en exhibited fast gold adsorption with an adsorption half-time of 5 min and an equilibrium time of 30 min. The maximal adsorption capacity was about 187 mg/g. The analysis of sorption experimental data with a non-linear surface reaction and diffusion-based kinetic models revealed the pseudo-second-order and Avrami model as the best fit, with unambiguous control by liquid film and intra-particle diffusion. The biological activity studies against Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Candida albicans revealed moderate activity of pGME-en/Au against different bacterial and fungal species. pGME-en/Au was stable in a saline solution, with a release of approximately 2.3 mg/g after 24 h.
PB  - MDPI
T2  - Metals
T1  - Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite
IS  - 11
SP  - 1864
VL  - 13
DO  - 10.3390/met13111864
ER  - 
@article{
author = "Tadić, Tamara and Marković, Bojana and Vuković, Zorica and Stefanov, Plamen and Maksin, Danijela and Nastasović, Aleksandra and Onjia, Antonije",
year = "2023",
abstract = "A novel porous gold polymer composite was prepared by the functionalization of a glycidyl methacrylate-based copolymer (pGME) with ethylene diamine (pGME-en), and activation by gold (pGME-en/Au), in a simple batch adsorption procedure in an acid solution, at room temperature. Detailed characterization of the pGME-en before and after activation was performed. The main focuses of this research were the design of a method that can enable the recovery of gold and the reuse of this multipurpose sorbent as an antimicrobial agent. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis pointed out amine groups as the primary binding sites for Au activation, while hydroxyl groups also contributed to the chelation reaction. pGME-en exhibited fast gold adsorption with an adsorption half-time of 5 min and an equilibrium time of 30 min. The maximal adsorption capacity was about 187 mg/g. The analysis of sorption experimental data with a non-linear surface reaction and diffusion-based kinetic models revealed the pseudo-second-order and Avrami model as the best fit, with unambiguous control by liquid film and intra-particle diffusion. The biological activity studies against Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Candida albicans revealed moderate activity of pGME-en/Au against different bacterial and fungal species. pGME-en/Au was stable in a saline solution, with a release of approximately 2.3 mg/g after 24 h.",
publisher = "MDPI",
journal = "Metals",
title = "Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite",
number = "11",
pages = "1864",
volume = "13",
doi = "10.3390/met13111864"
}
Tadić, T., Marković, B., Vuković, Z., Stefanov, P., Maksin, D., Nastasović, A.,& Onjia, A.. (2023). Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite. in Metals
MDPI., 13(11), 1864.
https://doi.org/10.3390/met13111864
Tadić T, Marković B, Vuković Z, Stefanov P, Maksin D, Nastasović A, Onjia A. Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite. in Metals. 2023;13(11):1864.
doi:10.3390/met13111864 .
Tadić, Tamara, Marković, Bojana, Vuković, Zorica, Stefanov, Plamen, Maksin, Danijela, Nastasović, Aleksandra, Onjia, Antonije, "Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite" in Metals, 13, no. 11 (2023):1864,
https://doi.org/10.3390/met13111864 . .

Zamena sumpora selenom. Efekat polarnih grupa iz okruženja

Suručić, Ljiljana; Tadić, Tamara; Nastasović, Aleksandra; Marković, Bojana; Sandić, Zvjezdana; Onjia, Antonije; Janjić, Goran

(Beograd : Srpsko kristalografsko društvo, 2021)

TY  - CONF
AU  - Suručić, Ljiljana
AU  - Tadić, Tamara
AU  - Nastasović, Aleksandra
AU  - Marković, Bojana
AU  - Sandić, Zvjezdana
AU  - Onjia, Antonije
AU  - Janjić, Goran
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7037
AB  - Statistička analiza podataka dobijenih iz kristalnih struktura, ekstrahovanih iz Kembričke baze
strukturnih podataka (eng. CSD), pokazala je da atomi S i Se u nepolarnom okruženju pokazuju
sličnu tendenciju ka pojedinim tipovima interakcija [1]. Najbrojnije su strukture sa C-H…S i CH…Se interakcijama (~ 80%), dok su Se…Se i S …S interakcije druge po zastupljenosti (~ 5%).
Kada se S ili Se nalaze u polarnom okruženju (u neposrednoj blizini imaju O-H ili N-H grupu)
raspodela pojedinih tipova interakcija je nešto drugačija. Statistička analiza interakcija S i Se
(kriterijumi: d < 4.0Å (za S) d < 4.5Å (za Se), Slika) pokazala je da su najbrojnije interakcije sa H
atomom (u oba slučaja oko 47%), dok su interakcije koje uključuju C atome (interakcije sa
nepolarnim grupama) druge po zastupljenosti. Interakcije sa nepolarnim C-H grupama su nešto
zastupljenije kod Se (30%) nego kod S atoma (21%), dok su interakcije sa polarnim O-H i N-H
grupama manje brojne kod Se (ukupno 10%) nego kod S atoma (ukupno 16%). Neočekivano,
simultane interakcije X atoma sa S/Se atomom i polarnom O-H/N-H grupom (H…X<3.5 Å) su
zastupljene u udelu od samo 20% (Slika).
Rezultati doking studije sugerišu da bi PBISe (Se jedinjenje) moglo biti bolji inhibitor iNOS
(inducibilne azot-monoksid sintaze) nego njegov S derivat (PBIT). Sve orijentacije PBISe su
grupisane na istom mestu (aktivno mesto, Slika) što dovodi do mnogo bolje efikasnosti ovog
molekula u odnosu na PBIT, za kojeg su nađena tri mesta vezivanja (Slika). Ovo se slaže sa
eksperimentalnim rezultatima koji ukazuju na to da PBISe ubija ćelije melanoma više od 10 puta
efikasnije od drugog iNOS inhibitora (PBIT).
AB  - Statistical analysis of data from crystal structures, extracted from Cambridge Structural Database(CSD) have shown that S and Se atoms in nonpolar environment display similar tendencytoward specified type interactions [1]. The most numerous are structures with C−H···Se andC−H···S interactions (~80%), while structures with Se···Se and S···S interactions (~5%) are notablyless numerous (second type of interactions). When S or Se atoms is in a polar environment(there is OH or NH grous in the vicinity), the distribution of certain types of interactions is slightlydifferent. Statistical analysis of S and Se interactions (criteria: d < 4.0 Å (for S) d < 4.5 Å (for Se),Figure) showed the most numerous interactions with the H atom (in both cases about 47%), whileinteractions involving C atoms (interactions with non-polar groups) are second in prevalence.Interactions with non-polar C-H groups are slightly more numerous for Se (30%) than for S atom(21%), while interactions with polar O-H and N-H groups are less numerous for Se (10% in total)than in case of S atom (16% in total). Unexpectedly, the simultaneous interactions of X atom withthe S/Se atom and the polar OH/N-H group (H…X<3.5 Å) are only present in an amount of about20%.Results from docking study suggested that PBISe (Se compound) could be beter inhibitor ofiNOS (inducible nitric oxide synthase) than its S derivative (PBIT). All orientations of PBISe areclustered at the same site (active site, Figure) leading to much better efficiency of this moleculecompared to PBIT, where three binding sites can be observed (Figure). This is in strong agreementwith experimental results pointing that PBISe kills melanoma cells >10−fold more effectively thanother iNOS inhibitors (PBIT).
PB  - Beograd : Srpsko kristalografsko društvo
C3  - Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 2021
T1  - Zamena sumpora selenom. Efekat polarnih grupa iz okruženja
T1  - Substitution of sulfur by selenium. Effect of polar groups from the environmental
EP  - 45
SP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7037
ER  - 
@conference{
author = "Suručić, Ljiljana and Tadić, Tamara and Nastasović, Aleksandra and Marković, Bojana and Sandić, Zvjezdana and Onjia, Antonije and Janjić, Goran",
year = "2021",
abstract = "Statistička analiza podataka dobijenih iz kristalnih struktura, ekstrahovanih iz Kembričke baze
strukturnih podataka (eng. CSD), pokazala je da atomi S i Se u nepolarnom okruženju pokazuju
sličnu tendenciju ka pojedinim tipovima interakcija [1]. Najbrojnije su strukture sa C-H…S i CH…Se interakcijama (~ 80%), dok su Se…Se i S …S interakcije druge po zastupljenosti (~ 5%).
Kada se S ili Se nalaze u polarnom okruženju (u neposrednoj blizini imaju O-H ili N-H grupu)
raspodela pojedinih tipova interakcija je nešto drugačija. Statistička analiza interakcija S i Se
(kriterijumi: d < 4.0Å (za S) d < 4.5Å (za Se), Slika) pokazala je da su najbrojnije interakcije sa H
atomom (u oba slučaja oko 47%), dok su interakcije koje uključuju C atome (interakcije sa
nepolarnim grupama) druge po zastupljenosti. Interakcije sa nepolarnim C-H grupama su nešto
zastupljenije kod Se (30%) nego kod S atoma (21%), dok su interakcije sa polarnim O-H i N-H
grupama manje brojne kod Se (ukupno 10%) nego kod S atoma (ukupno 16%). Neočekivano,
simultane interakcije X atoma sa S/Se atomom i polarnom O-H/N-H grupom (H…X<3.5 Å) su
zastupljene u udelu od samo 20% (Slika).
Rezultati doking studije sugerišu da bi PBISe (Se jedinjenje) moglo biti bolji inhibitor iNOS
(inducibilne azot-monoksid sintaze) nego njegov S derivat (PBIT). Sve orijentacije PBISe su
grupisane na istom mestu (aktivno mesto, Slika) što dovodi do mnogo bolje efikasnosti ovog
molekula u odnosu na PBIT, za kojeg su nađena tri mesta vezivanja (Slika). Ovo se slaže sa
eksperimentalnim rezultatima koji ukazuju na to da PBISe ubija ćelije melanoma više od 10 puta
efikasnije od drugog iNOS inhibitora (PBIT)., Statistical analysis of data from crystal structures, extracted from Cambridge Structural Database(CSD) have shown that S and Se atoms in nonpolar environment display similar tendencytoward specified type interactions [1]. The most numerous are structures with C−H···Se andC−H···S interactions (~80%), while structures with Se···Se and S···S interactions (~5%) are notablyless numerous (second type of interactions). When S or Se atoms is in a polar environment(there is OH or NH grous in the vicinity), the distribution of certain types of interactions is slightlydifferent. Statistical analysis of S and Se interactions (criteria: d < 4.0 Å (for S) d < 4.5 Å (for Se),Figure) showed the most numerous interactions with the H atom (in both cases about 47%), whileinteractions involving C atoms (interactions with non-polar groups) are second in prevalence.Interactions with non-polar C-H groups are slightly more numerous for Se (30%) than for S atom(21%), while interactions with polar O-H and N-H groups are less numerous for Se (10% in total)than in case of S atom (16% in total). Unexpectedly, the simultaneous interactions of X atom withthe S/Se atom and the polar OH/N-H group (H…X<3.5 Å) are only present in an amount of about20%.Results from docking study suggested that PBISe (Se compound) could be beter inhibitor ofiNOS (inducible nitric oxide synthase) than its S derivative (PBIT). All orientations of PBISe areclustered at the same site (active site, Figure) leading to much better efficiency of this moleculecompared to PBIT, where three binding sites can be observed (Figure). This is in strong agreementwith experimental results pointing that PBISe kills melanoma cells >10−fold more effectively thanother iNOS inhibitors (PBIT).",
publisher = "Beograd : Srpsko kristalografsko društvo",
journal = "Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 2021",
title = "Zamena sumpora selenom. Efekat polarnih grupa iz okruženja, Substitution of sulfur by selenium. Effect of polar groups from the environmental",
pages = "45-44",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7037"
}
Suručić, L., Tadić, T., Nastasović, A., Marković, B., Sandić, Z., Onjia, A.,& Janjić, G.. (2021). Zamena sumpora selenom. Efekat polarnih grupa iz okruženja. in Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 2021
Beograd : Srpsko kristalografsko društvo., 44-45.
https://hdl.handle.net/21.15107/rcub_technorep_7037
Suručić L, Tadić T, Nastasović A, Marković B, Sandić Z, Onjia A, Janjić G. Zamena sumpora selenom. Efekat polarnih grupa iz okruženja. in Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 2021. 2021;:44-45.
https://hdl.handle.net/21.15107/rcub_technorep_7037 .
Suručić, Ljiljana, Tadić, Tamara, Nastasović, Aleksandra, Marković, Bojana, Sandić, Zvjezdana, Onjia, Antonije, Janjić, Goran, "Zamena sumpora selenom. Efekat polarnih grupa iz okruženja" in Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 2021 (2021):44-45,
https://hdl.handle.net/21.15107/rcub_technorep_7037 .