TY  - JOUR
AU  - Vasiljević, Zorka Z
AU  - Vunduk, Jovana
AU  - Bartolić, Dragana
AU  - Miskovic, Goran
AU  - Ognjanović, Miloš
AU  - Tadic, Nenad
AU  - Nikolić, Maria Vesna
PY  - 2024
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3209
AB  - Emission  of greenhouse gases and infectious diseases caused by improper agro-waste disposal has gained significant attention in recent years. To overcome these hurdles, agro-waste can be valorized into valuable bioactive compounds that act as reducing or stabilizing agents in the synthesis of nanomaterials. Herein, we report a simple circular approach using Citrus reticulata Blanco (C. reticulata) waste (peel powder/aqueous extract) as green reducing and capping/stabilizing agents and Zn nitrate/acetate precursors to synthesize ZnO nanoparticles (NPs) with efficient antimicrobial and photocatalytic activities. The obtained NPs crystallized in a hexagonal wurtzite structure and differed clearly in their morphology. UV-vis analysis of the nanoparticles showed a characteristic broad absorption band between 330 and 414 nm, belonging to ZnO NPs. Fourier transform infrared (FTIR) spectroscopy of ZnO NPs exhibited a Zn–O band close to 450 cm−1. The band gap values were in the range of 2.84-3.14 eV depending on the precursor and agent used. The crystallite size obtained from size-strain plots from measured XRD patterns was between 7 and 26 nm, with the strain between 16 and 4%.  The high crystalline nature of obtained ZnO NPs was confirmed by clear ring diffraction patterns and d-spacing values of the observed lattice fringes. ZnNPeelMan_400 and ZnNExtrMan have shown good stability as the Zeta potential was found to be around -20 mV and reduced particle aggregation. Photoluminescence analysis revealed different defects belonging to oxygen vacancies (VO+ and VO++) and zinc interstitial (Zni) sites. The presence of oxygen vacancies on the surface of ZnAcExtrMan_400 and ZnAcPeelMan_400 increased antimicrobial activity, specifically against gram-negative bacteria Escherichia coli (E.coli) and Salmonella enteritidis (S. enteritidis). ZnNextrMan with a minimal inhibitory concentration of 0.156 mg/ml was more effective against gram-positive bacteria, Staphylococcus aureus (S. aureus) revealing a high influence of particle size and shape on antimicrobial activity. In addition, the photocatalytic activity of the ZnO NPs was examined by assessing the degradation of acid green dye in an aqueous solution under UV light irradiation. ZnAcPeelMan_400 exhibited excellent photocatalytic activity (94%) within 90 minutes after irradiation compared to other obtained ZnO NPs.
PB  - American Chemical Society
T2  - ACS Applied Bio Materials
T1  - An Eco-friendly Approach to ZnO NP Synthesis Using Citrus reticulata Blanco Peel/Extract: Characterization and Antibacterial and Photocatalytic Activity
EP  - 3032
SP  - 3014
VL  - 7
DO  - 10.1021/acsabm.4c00079
ER  - 

@article{
author = "Vasiljević, Zorka Z and Vunduk, Jovana and Bartolić, Dragana and Miskovic, Goran and Ognjanović, Miloš and Tadic, Nenad and Nikolić, Maria Vesna",
year = "2024",
abstract = "Emission  of greenhouse gases and infectious diseases caused by improper agro-waste disposal has gained significant attention in recent years. To overcome these hurdles, agro-waste can be valorized into valuable bioactive compounds that act as reducing or stabilizing agents in the synthesis of nanomaterials. Herein, we report a simple circular approach using Citrus reticulata Blanco (C. reticulata) waste (peel powder/aqueous extract) as green reducing and capping/stabilizing agents and Zn nitrate/acetate precursors to synthesize ZnO nanoparticles (NPs) with efficient antimicrobial and photocatalytic activities. The obtained NPs crystallized in a hexagonal wurtzite structure and differed clearly in their morphology. UV-vis analysis of the nanoparticles showed a characteristic broad absorption band between 330 and 414 nm, belonging to ZnO NPs. Fourier transform infrared (FTIR) spectroscopy of ZnO NPs exhibited a Zn–O band close to 450 cm−1. The band gap values were in the range of 2.84-3.14 eV depending on the precursor and agent used. The crystallite size obtained from size-strain plots from measured XRD patterns was between 7 and 26 nm, with the strain between 16 and 4%.  The high crystalline nature of obtained ZnO NPs was confirmed by clear ring diffraction patterns and d-spacing values of the observed lattice fringes. ZnNPeelMan_400 and ZnNExtrMan have shown good stability as the Zeta potential was found to be around -20 mV and reduced particle aggregation. Photoluminescence analysis revealed different defects belonging to oxygen vacancies (VO+ and VO++) and zinc interstitial (Zni) sites. The presence of oxygen vacancies on the surface of ZnAcExtrMan_400 and ZnAcPeelMan_400 increased antimicrobial activity, specifically against gram-negative bacteria Escherichia coli (E.coli) and Salmonella enteritidis (S. enteritidis). ZnNextrMan with a minimal inhibitory concentration of 0.156 mg/ml was more effective against gram-positive bacteria, Staphylococcus aureus (S. aureus) revealing a high influence of particle size and shape on antimicrobial activity. In addition, the photocatalytic activity of the ZnO NPs was examined by assessing the degradation of acid green dye in an aqueous solution under UV light irradiation. ZnAcPeelMan_400 exhibited excellent photocatalytic activity (94%) within 90 minutes after irradiation compared to other obtained ZnO NPs.",
publisher = "American Chemical Society",
journal = "ACS Applied Bio Materials",
title = "An Eco-friendly Approach to ZnO NP Synthesis Using Citrus reticulata Blanco Peel/Extract: Characterization and Antibacterial and Photocatalytic Activity",
pages = "3032-3014",
volume = "7",
doi = "10.1021/acsabm.4c00079"
}

Vasiljević, Z. Z., Vunduk, J., Bartolić, D., Miskovic, G., Ognjanović, M., Tadic, N.,& Nikolić, M. V.. (2024). An Eco-friendly Approach to ZnO NP Synthesis Using Citrus reticulata Blanco Peel/Extract: Characterization and Antibacterial and Photocatalytic Activity. in ACS Applied Bio Materials
American Chemical Society., 7, 3014-3032.
https://doi.org/10.1021/acsabm.4c00079

Vasiljević ZZ, Vunduk J, Bartolić D, Miskovic G, Ognjanović M, Tadic N, Nikolić MV. An Eco-friendly Approach to ZnO NP Synthesis Using Citrus reticulata Blanco Peel/Extract: Characterization and Antibacterial and Photocatalytic Activity. in ACS Applied Bio Materials. 2024;7:3014-3032.
doi:10.1021/acsabm.4c00079 .

Vasiljević, Zorka Z, Vunduk, Jovana, Bartolić, Dragana, Miskovic, Goran, Ognjanović, Miloš, Tadic, Nenad, Nikolić, Maria Vesna, "An Eco-friendly Approach to ZnO NP Synthesis Using Citrus reticulata Blanco Peel/Extract: Characterization and Antibacterial and Photocatalytic Activity" in ACS Applied Bio Materials, 7 (2024):3014-3032,
https://doi.org/10.1021/acsabm.4c00079 . .

TY  - JOUR
AU  - Rizzoto, Francesco
AU  - Vasiljević, Zorka Z
AU  - Stanojević, Gordana
AU  - Dojčinović, Milena
AU  - Jankovic-Castvan, Ivona
AU  - Vujancevic, Jelena
AU  - Tadic, Nenad
AU  - Branković, Goran
AU  - MAGNIEZ, Aurélie
AU  - Vidic, Jasmina
AU  - Nikolić, Maria Vesna
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1584
AB  - An emerging technology of active packaging enables prolongation of food shelf life by limiting the oxygen transfer and the reactivity of free radicals, which both destruct food freshness. In this work, Fe2TiO5 nanoparticles were synthesized using a modified sol–gel method and evaluated as an enforcement of alginate food packaging film. Pure phase Fe2TiO5 nanoparticles had an average particle size of 44 nm and rhombohedral morphology. Fe2TiO5 nanoparticles induce no cell damage of human Caco-2 epithelial cells and show no inhibitory effect towards growth of a panel of bacterial strains, suggesting good biocompatibility. Films obtained by incorporation of Fe2TiO5 nanoparticles into alginate using the solvent casting method show no migration of iron or titanium ions from films to food simulants again suggesting their safety as a packaging material. Fe2TiO5 nanoparticles also showed strong antioxidant efficiency as determined using the DPPḢ assay, and confirmed further in a preservation test on fresh fruit.
PB  - Elsevier
T2  - Food Chemistry
T1  - Antioxidant and cell-friendly Fe2TiO5 nanoparticles for food packaging application
VL  - 390
DO  - 10.1016/j.foodchem.2022.133198
ER  - 

@article{
author = "Rizzoto, Francesco and Vasiljević, Zorka Z and Stanojević, Gordana and Dojčinović, Milena and Jankovic-Castvan, Ivona and Vujancevic, Jelena and Tadic, Nenad and Branković, Goran and MAGNIEZ, Aurélie and Vidic, Jasmina and Nikolić, Maria Vesna",
year = "2022",
abstract = "An emerging technology of active packaging enables prolongation of food shelf life by limiting the oxygen transfer and the reactivity of free radicals, which both destruct food freshness. In this work, Fe2TiO5 nanoparticles were synthesized using a modified sol–gel method and evaluated as an enforcement of alginate food packaging film. Pure phase Fe2TiO5 nanoparticles had an average particle size of 44 nm and rhombohedral morphology. Fe2TiO5 nanoparticles induce no cell damage of human Caco-2 epithelial cells and show no inhibitory effect towards growth of a panel of bacterial strains, suggesting good biocompatibility. Films obtained by incorporation of Fe2TiO5 nanoparticles into alginate using the solvent casting method show no migration of iron or titanium ions from films to food simulants again suggesting their safety as a packaging material. Fe2TiO5 nanoparticles also showed strong antioxidant efficiency as determined using the DPPḢ assay, and confirmed further in a preservation test on fresh fruit.",
publisher = "Elsevier",
journal = "Food Chemistry",
title = "Antioxidant and cell-friendly Fe2TiO5 nanoparticles for food packaging application",
volume = "390",
doi = "10.1016/j.foodchem.2022.133198"
}

Rizzoto, F., Vasiljević, Z. Z., Stanojević, G., Dojčinović, M., Jankovic-Castvan, I., Vujancevic, J., Tadic, N., Branković, G., MAGNIEZ, A., Vidic, J.,& Nikolić, M. V.. (2022). Antioxidant and cell-friendly Fe2TiO5 nanoparticles for food packaging application. in Food Chemistry
Elsevier., 390.
https://doi.org/10.1016/j.foodchem.2022.133198

Rizzoto F, Vasiljević ZZ, Stanojević G, Dojčinović M, Jankovic-Castvan I, Vujancevic J, Tadic N, Branković G, MAGNIEZ A, Vidic J, Nikolić MV. Antioxidant and cell-friendly Fe2TiO5 nanoparticles for food packaging application. in Food Chemistry. 2022;390.
doi:10.1016/j.foodchem.2022.133198 .

Rizzoto, Francesco, Vasiljević, Zorka Z, Stanojević, Gordana, Dojčinović, Milena, Jankovic-Castvan, Ivona, Vujancevic, Jelena, Tadic, Nenad, Branković, Goran, MAGNIEZ, Aurélie, Vidic, Jasmina, Nikolić, Maria Vesna, "Antioxidant and cell-friendly Fe2TiO5 nanoparticles for food packaging application" in Food Chemistry, 390 (2022),
https://doi.org/10.1016/j.foodchem.2022.133198 . .