Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 77, Issue 1, Pages 34-41Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2007.02.078
Keywords
carotenoids; lipids; UV-irradiation; peroxidation
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Antioxidant action of four selected carotenoids (two carotenes, beta-carotene and lycopene, and two xanthophylls, lutein and neoxanthin) on UV-induced lecithin lipid peroxidation in aqueous solution has been studied by thiobarbituric acid (TBA) test. TBA test is based on absorbance measurements of complex formed between malondialdehyde, secondary product of lipid peroxidation and thiobarbituric acid, at 532 nm. The antioxidant capacities of investigated carotenoids appeared to be strongly affected by UV-action. High energy input of the involved UV-photons plays major governing role, though a certain impact of the carotenoid structures cannot be neglected. The results suggest a minor remained contribution of selected carotenoids to prevention of lecithin peroxidation in the studied system as a result of UV-irradiation. (C) 2007 Elsevier Ltd. All rights reserved.
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