Overview of Current Knowledge of Metabolism of Vitamin A and Carotenoids
Current knowledge about the metabolism of naturally occurring retinoids and carotenoids was summarized. Dietary provitamin A carotenoids are largely converted to retinol (vitamin A) during intestinal absorption in the mucosal cell. In humans, a limited amount of carotenoids can be absorbed intact, a...
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Veröffentlicht in: | JNCI : Journal of the National Cancer Institute 1984-12, Vol.73 (6), p.1375-1379 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Current knowledge about the metabolism of naturally occurring retinoids and carotenoids was summarized. Dietary provitamin A carotenoids are largely converted to retinol (vitamin A) during intestinal absorption in the mucosal cell. In humans, a limited amount of carotenoids can be absorbed intact, along with retinyl esters (newly synthesized or from dietary vitamin A), mainly via lymph chylomicrons. Carotenoids are stored in several tissues, particularly liver and fat. They are transported in plasma by lipoproteins (density |
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ISSN: | 0027-8874 1460-2105 |
DOI: | 10.1093/jnci/73.6.1375 |