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Article: Lycopene and beta-carotene decompose more rapidly than lutein and zeaxanthin upon exposure to various pro-oxidants in vitro.(Zeaxanthin)(Brief article)
- Article from:
- Life Extension
- Article date:
- June 1, 2008
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Major carotenoids of human plasma and tissues were exposed to radical-initiated autoxidation conditions. The consumption of lutein and zeaxanthin, the only carotenoids in the retina, and lycopene and beta-carotene, the most effective quenchers of singlet oxygen in plasma, were compared. Under all conditions of free radical-initiated autoxidation of carotenoids which were investigated, the breakdown of lycopene and beta-carotene was much faster than that of lutein and zeaxanthin. Under the influence of UV light in presence of Rose Bengal, by far the highest breakdown rate was found for beta-carotene, followed by lycopene. Bleaching of carotenoid mixtures mediated by NaOCl, ...
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Article: Zeaxanthin.(COSMECEUTICAL CRITIQUE)
Skin & Allergy News;
May 1, 2009 ;
700+ words
... ... 1740:101-7). Zeaxanthin is among the most studied ... carotenoids, behind beta-carotene, lycopene ... class of carotenoids, zeaxanthin is closely related to ... in particular, to beta-carotene and lutein ... betacarotene, however, zeaxanthin cannot be converted ...
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