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Xanthophyll

A yellow pigment; see under carotenoids.

A group of dyes belonging to the tetra-terpenes with over 800 different species occurring in nature. They are widespread in the animal and plant kingdom and cause a yellow, green, orange to reddish coloration. During photosynthesis, carotenoids are responsible for protection against photo-oxidation and for energy transfer. The most common carotenoids are β-carotene (carrot), a precursor of vitamin A and lutein. Lutein-5,6-epoxide, luteoxanthin, neoxanthin, violaxanthin, xanthophylls and zeaxanthin occur in lower concentrations. Carotenoids are also used for colouring and as flavour enhancers in foods. Some carotenoids act as antioxidants and therefore have a preventive effect on many diseases such as Alzheimer's, arteriosclerosis, cataracts, skin ageing, cancer, Parkinson's...

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Dominik Trick

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Dominik Trick
Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg

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25,988 Keywords · 46,819 Synonyms · 5,324 Translations · 31,322 Pronunciations · 183,249 Cross-references
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