TY  - JOUR
AU  - Rajab Elferjane, Muna
AU  - Jovanović, Aleksandra A.
AU  - Milutinović, Violeta
AU  - Čutović, Natalija
AU  - Jovanović Krivokuća, Milica
AU  - Marinković, Aleksandar
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6591
AB  - In the study, the optimization of the extraction from Aloe vera leaf waste was performed via varying solid-to-solvent ratio, solvent type, extraction time, and technique (maceration, heat-, ultrasound-, and microwave-assisted extractions—HAE, UAE, and MAE, respectively). The optimal extraction conditions for achieving the highest polyphenol content are a 1:30 ratio, 70% ethanol, and 30 min of HAE. Total flavonoid and protein contents were significantly higher in the extract from MAE, while total condensed tannin content was the highest in HAE. LC-MS analysis quantified 13 anthraquinone and chromone compounds. The variations in the FT-IR spectra of the extracts obtained by different extraction procedures are minor. The influence of extraction conditions on the antioxidant ability of the extracts depended on applied antioxidant assays. The extracts possessed medium inhibition properties against Staphylococcus aureus and weak inhibitory activity against Enterococcus feacalis. The extracts had stimulative effect on HaCaT cell viability. Regarding the extraction yield, there was a significant difference between the used extraction techniques (MAE > HAE > maceration and UAE). The presented study is an initial step in the production of polyphenol-rich extracts from A. vera leaf waste aimed to be used for the potential preparation of pharmaceutical and cosmetic formulations for the skin.
PB  - MDPI
T2  - Plants
T1  - From Aloe vera Leaf Waste to the Extracts with Biological Potential: Optimization of the Extractions, Physicochemical Characterization, and Biological Activities
IS  - 14
SP  - 2744
VL  - 12
DO  - 10.3390/plants12142744
ER  - 

@article{
author = "Rajab Elferjane, Muna and Jovanović, Aleksandra A. and Milutinović, Violeta and Čutović, Natalija and Jovanović Krivokuća, Milica and Marinković, Aleksandar",
year = "2023",
abstract = "In the study, the optimization of the extraction from Aloe vera leaf waste was performed via varying solid-to-solvent ratio, solvent type, extraction time, and technique (maceration, heat-, ultrasound-, and microwave-assisted extractions—HAE, UAE, and MAE, respectively). The optimal extraction conditions for achieving the highest polyphenol content are a 1:30 ratio, 70% ethanol, and 30 min of HAE. Total flavonoid and protein contents were significantly higher in the extract from MAE, while total condensed tannin content was the highest in HAE. LC-MS analysis quantified 13 anthraquinone and chromone compounds. The variations in the FT-IR spectra of the extracts obtained by different extraction procedures are minor. The influence of extraction conditions on the antioxidant ability of the extracts depended on applied antioxidant assays. The extracts possessed medium inhibition properties against Staphylococcus aureus and weak inhibitory activity against Enterococcus feacalis. The extracts had stimulative effect on HaCaT cell viability. Regarding the extraction yield, there was a significant difference between the used extraction techniques (MAE > HAE > maceration and UAE). The presented study is an initial step in the production of polyphenol-rich extracts from A. vera leaf waste aimed to be used for the potential preparation of pharmaceutical and cosmetic formulations for the skin.",
publisher = "MDPI",
journal = "Plants",
title = "From Aloe vera Leaf Waste to the Extracts with Biological Potential: Optimization of the Extractions, Physicochemical Characterization, and Biological Activities",
number = "14",
pages = "2744",
volume = "12",
doi = "10.3390/plants12142744"
}

Rajab Elferjane, M., Jovanović, A. A., Milutinović, V., Čutović, N., Jovanović Krivokuća, M.,& Marinković, A.. (2023). From Aloe vera Leaf Waste to the Extracts with Biological Potential: Optimization of the Extractions, Physicochemical Characterization, and Biological Activities. in Plants
MDPI., 12(14), 2744.
https://doi.org/10.3390/plants12142744

Rajab Elferjane M, Jovanović AA, Milutinović V, Čutović N, Jovanović Krivokuća M, Marinković A. From Aloe vera Leaf Waste to the Extracts with Biological Potential: Optimization of the Extractions, Physicochemical Characterization, and Biological Activities. in Plants. 2023;12(14):2744.
doi:10.3390/plants12142744 .

Rajab Elferjane, Muna, Jovanović, Aleksandra A., Milutinović, Violeta, Čutović, Natalija, Jovanović Krivokuća, Milica, Marinković, Aleksandar, "From Aloe vera Leaf Waste to the Extracts with Biological Potential: Optimization of the Extractions, Physicochemical Characterization, and Biological Activities" in Plants, 12, no. 14 (2023):2744,
https://doi.org/10.3390/plants12142744 . .

TY  - JOUR
AU  - Lazić, Vesna
AU  - Pirković, Andrea
AU  - Sredojević, Dusan
AU  - Marković, Jelena
AU  - Papan, Jelena
AU  - Ahrenkiel, Phillip S.
AU  - Janković-Častvan, Ivona
AU  - Dekanski, Dragana
AU  - Jovanović-Krivokuća, Milica
AU  - Nedeljković, Jovan M.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4772
AB  - The toxicity of hybrid nanoparticles, consisting of non-toxic components, zirconium dioxide nanoparticles (ZrO2 NPs), and caffeic acid (CA), was examined against four different cell lines (HTR-8 SV/Neo, JEG-3, JAR, and HeLa). Stable aqueous ZrO2 sol, synthesized by forced hydrolysis, consists of 3-4 nm in size primary particles organized in 30-60 nm in size snowflake-like particles, as determined by transmission electron microscopy and direct light scattering measurements. The surface modification of ZrO2 NPs with CA leads to the formation of an interfacial charge transfer (ICT) complex followed by the appearance of absorption in the visible spectral range. The spectroscopic observations are complemented with the density functional theory calculations using a cluster model. The ZrO2 NPs and CA are non-toxic against four different cell lines in investigated concentration range. Also, ZrO2 NPs promote the proliferation of HTR-8 SV/Neo, JAR, and HeLa cells. On the other hand, hybrid ZrO2/CA NPs induced a significant reduction of the viability of the JEG-3 cells (39 %) for the high concentration of components (1.6 mM ZrO2 and 0.4 mM CA).
T2  - Chemico-Biological Interactions
T1  - Surface-modified ZrO2 nanoparticles with caffeic acid: Characterization and in vitro evaluation of biosafety for placental cells
VL  - 347
DO  - 10.1016/j.cbi.2021.109618
ER  - 

@article{
author = "Lazić, Vesna and Pirković, Andrea and Sredojević, Dusan and Marković, Jelena and Papan, Jelena and Ahrenkiel, Phillip S. and Janković-Častvan, Ivona and Dekanski, Dragana and Jovanović-Krivokuća, Milica and Nedeljković, Jovan M.",
year = "2021",
abstract = "The toxicity of hybrid nanoparticles, consisting of non-toxic components, zirconium dioxide nanoparticles (ZrO2 NPs), and caffeic acid (CA), was examined against four different cell lines (HTR-8 SV/Neo, JEG-3, JAR, and HeLa). Stable aqueous ZrO2 sol, synthesized by forced hydrolysis, consists of 3-4 nm in size primary particles organized in 30-60 nm in size snowflake-like particles, as determined by transmission electron microscopy and direct light scattering measurements. The surface modification of ZrO2 NPs with CA leads to the formation of an interfacial charge transfer (ICT) complex followed by the appearance of absorption in the visible spectral range. The spectroscopic observations are complemented with the density functional theory calculations using a cluster model. The ZrO2 NPs and CA are non-toxic against four different cell lines in investigated concentration range. Also, ZrO2 NPs promote the proliferation of HTR-8 SV/Neo, JAR, and HeLa cells. On the other hand, hybrid ZrO2/CA NPs induced a significant reduction of the viability of the JEG-3 cells (39 %) for the high concentration of components (1.6 mM ZrO2 and 0.4 mM CA).",
journal = "Chemico-Biological Interactions",
title = "Surface-modified ZrO2 nanoparticles with caffeic acid: Characterization and in vitro evaluation of biosafety for placental cells",
volume = "347",
doi = "10.1016/j.cbi.2021.109618"
}

Lazić, V., Pirković, A., Sredojević, D., Marković, J., Papan, J., Ahrenkiel, P. S., Janković-Častvan, I., Dekanski, D., Jovanović-Krivokuća, M.,& Nedeljković, J. M.. (2021). Surface-modified ZrO2 nanoparticles with caffeic acid: Characterization and in vitro evaluation of biosafety for placental cells. in Chemico-Biological Interactions, 347.
https://doi.org/10.1016/j.cbi.2021.109618

Lazić V, Pirković A, Sredojević D, Marković J, Papan J, Ahrenkiel PS, Janković-Častvan I, Dekanski D, Jovanović-Krivokuća M, Nedeljković JM. Surface-modified ZrO2 nanoparticles with caffeic acid: Characterization and in vitro evaluation of biosafety for placental cells. in Chemico-Biological Interactions. 2021;347.
doi:10.1016/j.cbi.2021.109618 .

Lazić, Vesna, Pirković, Andrea, Sredojević, Dusan, Marković, Jelena, Papan, Jelena, Ahrenkiel, Phillip S., Janković-Častvan, Ivona, Dekanski, Dragana, Jovanović-Krivokuća, Milica, Nedeljković, Jovan M., "Surface-modified ZrO2 nanoparticles with caffeic acid: Characterization and in vitro evaluation of biosafety for placental cells" in Chemico-Biological Interactions, 347 (2021),
https://doi.org/10.1016/j.cbi.2021.109618 . .