Xanthophylls
نویسندگان
چکیده
منابع مشابه
Absorption and Metabolism of Xanthophylls
Dietary carotenoids, especially xanthophylls, have attracted significant attention because of their characteristic biological activities, including anti-allergic, anti-cancer, and anti-obese actions. Although no less than forty carotenoids are ingested under usual dietary habits, only six carotenoids and their metabolites have been found in human tissues, suggesting selectivity in the intestina...
متن کاملChlorophyll fluorescence quenching by xanthophylls
The interactions of the xanthophylls zeaxanthin, antheraxanthin and violaxanthin with chlorophyll, which are relevant for the chlorophyll fluorescence quenching in the non-photochemical quenching (NPQ) process in green plants, are investigated by means of quantum chemical methods. In particular, we use a hybrid approach consisting of time-dependent density-functional theory (TDDFT) and configur...
متن کاملMacular xanthophylls, lipoprotein-related genes, and age-related macular degeneration.
Plant-based macular xanthophylls (MXs; lutein and zeaxanthin) and the lutein metabolite meso-zeaxanthin are the major constituents of macular pigment, a compound concentrated in retinal areas that are responsible for fine-feature visual sensation. There is an unmet need to examine the genetics of factors influencing regulatory mechanisms and metabolic fates of these 3 MXs because they are linke...
متن کاملXanthophylls and abscisic Acid biosynthesis in water-stressed bean leaves.
Experiments were designed to obtain evidence about the possible role of xanthophylls as abscisic acid (ABA) precursors in water-stressed leaves of Phaseolus vularis L. Leaves were exposed to (14)CO(2) and the specific activities of several major leaf xanthophylls and stress-induced ABA were determined after a chase in (12)CO(2) for varying periods of time. The ABA specific radioactivities were ...
متن کاملXanthophylls and eye health of infants and adults.
Lutein and zeaxanthin are the only carotenoids present in the eye. They cannot be synthesized de novo and are specifically concentrated in the macula. They appear to have at least two major functions: to filter out blue light and thus prevent ensuing damages to the eye and to act as antioxidants. Infants are particularly at risk from both blue light and oxidative damage to eye tissues. Lutein i...
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ژورنال
عنوان ژورنال: Advances in Nutrition
سال: 2018
ISSN: 2161-8313,2156-5376
DOI: 10.1093/advances/nmx005