Effects of continuous UV-irradiation on the antioxidant activities of quercetin and rutin in solution in the presence of lecithin as the protective target

Autor:	Dejan Markovic, Dragan Cvetković, Dragana Cvetkovic, Blaga Radovanovic
Rok vydání:	2011
Předmět:	food.ingredient Antioxidant Chromatography Thiobarbituric acid medicine.medical_treatment General Chemistry Malondialdehyde Lecithin Lipid peroxidation Rutin chemistry.chemical_compound food chemistry medicine Methanol Quercetin
Zdroj:	Journal of the Serbian Chemical Society. 76:973-985
ISSN:	1820-7421 0352-5139
DOI:	10.2298/jsc101123089c
Popis:	The stabilities and antioxidant action of two selected flavonoids, quercetin and rutin, dissolved in methanol and water, toward continuous UV-irradiation from three different sub-ranges (UV-A, UV-B and UV-C) were studied. The flavonoids underwent degradation (bleaching) following first-order kinetics. The bleaching rates were highly dependent on the energy input of the involved UV-photons. The antioxidant activities of the two flavonoids on UV-induced lecithin lipid peroxidation were studied by the TBA-MDA test, and appeared to be also affected by the continuous UV irradiation. The energy input of the incident UV-photons again played a major governing role, but an impact of the flavonoids structures cannot be neglected.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::68af4a109e65fd6c36734d245881453d https://doi.org/10.2298/jsc101123089c Zobrazit plný text záznamu Plný text ve formátu PDF