Vitamin A

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High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Vitamin A is a vitamin that is needed by the retina of the eye in the form of a specific metabolite, the light-absorbing molecule retinal. This molecule is absolutely necessary for both scotopic and color vision. Vitamin A also functions in a very different role, as an irreversibly oxidized form retinoic acid, which is an important hormone-like growth factor for epithelial and other cells. In foods of animal origin, the major form of vitamin A is an ester, primarily retinyl palmitate, which is converted to an alcohol (retinol) in the small intestine. The retinol form functions as a storage form of the vitamin, and can be converted to and from its visually active aldehyde form, retinal.

Weitere Informationen

  • Allgemeine Informationen
    • GTIN 09786131439230
    • Editor Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
    • EAN 9786131439230
    • Titel Vitamin A
    • Herausgeber Betascript Publishing
    • Anzahl Seiten 68
    • Genre Biologie

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