In the present study, polyphenol extraction from Thymus serpyllum by-product (herbal dust) in microwave reactor was optimized through varying extraction time, ethanol concentration and solid-to-solvent ratiovia determination of total polyphenol and flavonoid contents, and antioxidant activity, using response surface methodology and a central composite design. Total polyphenol and flavonoids contents, as well as antioxidant activity of the extracts were statistically significantly affected by ethanol concentration and solid-to-solvent ratio. However, extraction time had statistically significant influence only on polyphenol yield. The extraction conditions that maximized polyphenol recovery were 48% ethanol and 0.0402 g/mL solid-to-solvent ratio during 86 s of microwave-assisted extraction, and under these conditions total polyphenol content was estimated to be 57.2 mg of gallic acid equivalents (GAE)/L, while measured value was 58.1 ± 3.2 mg GAE/L. Polyphenol content (HPLC analysis), a...ntioxidant, antimicrobial and antispasmodic potential of the extract prepared under these optimal extraction conditions were evaluated. Rosmarinic acids, luteolin 7-O-glucuronide, caffeic acid, apigenin glucuronide, 6-hydroxyluteolin 7-O-glucoside, 6,8-di-C-glucosylapigenin, and traces of chlorogenic acid were quantified in the extract (descending order of content). The selected extract inhibited 95% ± 0.9 of lipid peroxidation in β-Carotene and linoleic acid emulsion. It was more effective against tested Gram-positive bacteria than against Gram-negative and showed dose-dependent antispasmodic activity on spontaneous contractions, acetylcholine- and potassium chloride-induced contractions. Microwave-assisted extraction could be selected as a successful technique for polyphenol extraction from wild thyme by-product. Biological activities shown in the study open the possibility of potential application of the extract in pharmaceutical, food, functional food and cosmetic products
TY - JOUR
AU - Jovanović, Aleksandra A.
AU - Vajić, Una-Jovana V.
AU - Mijin, Dušan Ž.
AU - Zdunić, Gordana M.
AU - Šavikin, Katarina P.
AU - Branković, Suzana
AU - Kitić, Dušanka
AU - Bugarski, Branko M.
PY - 2022
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5194
AB - In the present study, polyphenol extraction from Thymus serpyllum by-product (herbal dust) in microwave reactor was optimized through varying extraction time, ethanol concentration and solid-to-solvent ratiovia determination of total polyphenol and flavonoid contents, and antioxidant activity, using response surface methodology and a central composite design. Total polyphenol and flavonoids contents, as well as antioxidant activity of the extracts were statistically significantly affected by ethanol concentration and solid-to-solvent ratio. However, extraction time had statistically significant influence only on polyphenol yield. The extraction conditions that maximized polyphenol recovery were 48% ethanol and 0.0402 g/mL solid-to-solvent ratio during 86 s of microwave-assisted extraction, and under these conditions total polyphenol content was estimated to be 57.2 mg of gallic acid equivalents (GAE)/L, while measured value was 58.1 ± 3.2 mg GAE/L. Polyphenol content (HPLC analysis), antioxidant, antimicrobial and antispasmodic potential of the extract prepared under these optimal extraction conditions were evaluated. Rosmarinic acids, luteolin 7-O-glucuronide, caffeic acid, apigenin glucuronide, 6-hydroxyluteolin 7-O-glucoside, 6,8-di-C-glucosylapigenin, and traces of chlorogenic acid were quantified in the extract (descending order of content). The selected extract inhibited 95% ± 0.9 of lipid peroxidation in β-Carotene and linoleic acid emulsion. It was more effective against tested Gram-positive bacteria than against Gram-negative and showed dose-dependent antispasmodic activity on spontaneous contractions, acetylcholine- and potassium chloride-induced contractions. Microwave-assisted extraction could be selected as a successful technique for polyphenol extraction from wild thyme by-product. Biological activities shown in the study open the possibility of potential application of the extract in pharmaceutical, food, functional food and cosmetic products
PB - Elsevier GmbH
T2 - Journal of Applied Research on Medicinal and Aromatic Plants
T1 - Polyphenol extraction in microwave reactor using by-product of Thymus serpyllum L. and biological potential of the extract
SP - 100417
VL - 31
DO - 10.1016/j.jarmap.2022.100417
ER -
@article{
author = "Jovanović, Aleksandra A. and Vajić, Una-Jovana V. and Mijin, Dušan Ž. and Zdunić, Gordana M. and Šavikin, Katarina P. and Branković, Suzana and Kitić, Dušanka and Bugarski, Branko M.",
year = "2022",
abstract = "In the present study, polyphenol extraction from Thymus serpyllum by-product (herbal dust) in microwave reactor was optimized through varying extraction time, ethanol concentration and solid-to-solvent ratiovia determination of total polyphenol and flavonoid contents, and antioxidant activity, using response surface methodology and a central composite design. Total polyphenol and flavonoids contents, as well as antioxidant activity of the extracts were statistically significantly affected by ethanol concentration and solid-to-solvent ratio. However, extraction time had statistically significant influence only on polyphenol yield. The extraction conditions that maximized polyphenol recovery were 48% ethanol and 0.0402 g/mL solid-to-solvent ratio during 86 s of microwave-assisted extraction, and under these conditions total polyphenol content was estimated to be 57.2 mg of gallic acid equivalents (GAE)/L, while measured value was 58.1 ± 3.2 mg GAE/L. Polyphenol content (HPLC analysis), antioxidant, antimicrobial and antispasmodic potential of the extract prepared under these optimal extraction conditions were evaluated. Rosmarinic acids, luteolin 7-O-glucuronide, caffeic acid, apigenin glucuronide, 6-hydroxyluteolin 7-O-glucoside, 6,8-di-C-glucosylapigenin, and traces of chlorogenic acid were quantified in the extract (descending order of content). The selected extract inhibited 95% ± 0.9 of lipid peroxidation in β-Carotene and linoleic acid emulsion. It was more effective against tested Gram-positive bacteria than against Gram-negative and showed dose-dependent antispasmodic activity on spontaneous contractions, acetylcholine- and potassium chloride-induced contractions. Microwave-assisted extraction could be selected as a successful technique for polyphenol extraction from wild thyme by-product. Biological activities shown in the study open the possibility of potential application of the extract in pharmaceutical, food, functional food and cosmetic products",
publisher = "Elsevier GmbH",
journal = "Journal of Applied Research on Medicinal and Aromatic Plants",
title = "Polyphenol extraction in microwave reactor using by-product of Thymus serpyllum L. and biological potential of the extract",
pages = "100417",
volume = "31",
doi = "10.1016/j.jarmap.2022.100417"
}
Jovanović, A. A., Vajić, U. V., Mijin, D. Ž., Zdunić, G. M., Šavikin, K. P., Branković, S., Kitić, D.,& Bugarski, B. M.. (2022). Polyphenol extraction in microwave reactor using by-product of Thymus serpyllum L. and biological potential of the extract. in Journal of Applied Research on Medicinal and Aromatic Plants
Elsevier GmbH., 31, 100417.
https://doi.org/10.1016/j.jarmap.2022.100417
Jovanović AA, Vajić UV, Mijin DŽ, Zdunić GM, Šavikin KP, Branković S, Kitić D, Bugarski BM. Polyphenol extraction in microwave reactor using by-product of Thymus serpyllum L. and biological potential of the extract. in Journal of Applied Research on Medicinal and Aromatic Plants. 2022;31:100417.
doi:10.1016/j.jarmap.2022.100417 .
Jovanović, Aleksandra A., Vajić, Una-Jovana V., Mijin, Dušan Ž., Zdunić, Gordana M., Šavikin, Katarina P., Branković, Suzana, Kitić, Dušanka, Bugarski, Branko M., "Polyphenol extraction in microwave reactor using by-product of Thymus serpyllum L. and biological potential of the extract" in Journal of Applied Research on Medicinal and Aromatic Plants, 31 (2022):100417,
https://doi.org/10.1016/j.jarmap.2022.100417 . .
