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xanthophyll
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xanthophyll

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Also known as 127-40-2, xanthophylls

thumb|The characteristic color of egg yolk results from the presence of a xanthophyll pigment typical in color of lutein or zeaxanthin of the xanthophylls, a division of the carotenoids group. Xanthophylls (originally phylloxanthins) are yellow pigments that occur widely in nature and form one of two major divisions of the carotenoid group; the other division is formed by the carotenes. The name is from Greek: (), meaning "yellow", and (), meaning "leaf"), due to their formation of the yellow band seen in early chromatography of leaf pigments.

~6 min read

Encyclopedic overview

7 sections
Contents
  • Molecular structure
  • Occurrence
  • Example compounds
  • Xanthophyll cycle
  • Food sources
  • References
  • External links

thumb|The characteristic color of egg yolk results from the presence of a xanthophyll pigment typical in color of lutein or zeaxanthin of the xanthophylls, a division of the carotenoids group. Xanthophylls (originally phylloxanthins) are yellow pigments that occur widely in nature and form one of two major divisions of the carotenoid group; the other division is formed by the carotenes. The name is from Greek: (), meaning "yellow", and (), meaning "leaf"), due to their formation of the yellow band seen in early chromatography of leaf pigments.

==Molecular structure== thumb|class=skin-invert-image|right|400px|The chemical structure of cryptoxanthin. Xanthophylls typically present oxygen as a [[hydroxyl group.]] right|thumb|130px|Thin layer chromatography is used to separate components of a plant extract, illustrating the experiment with plant pigments that gave chromatography its name. Plant xanthophylls form the bright yellow band next to the green.

Excerpted from Wikipedia’s “xanthophyll” article, available under the CC BY-SA 4.0 licence.

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