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UV-induced changes in antioxidant capacities of selected carotenoids toward lecithin in aqueous solution
Ist Teil von
Radiation physics and chemistry (Oxford, England : 1993), 2008, Vol.77 (1), p.34-41
Ort / Verlag
Elsevier Ltd
Erscheinungsjahr
2008
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Antioxidant action of four selected carotenoids (two carotenes,
β-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.