Effect of Xanthophyll on the Utilization of Carotene and Vitamin A by the Rat
- 1 January 1950
- journal article
- research article
- Published by Elsevier in Journal of Nutrition
- Vol. 40 (1), 159-168
- https://doi.org/10.1093/jn/40.1.159
Abstract
Large amounts of xanthophyll (lutein) administered with β-carotene or vitamin A decrease the utilization of these substances for tissue storage of vitamin A in rats. They have no effect on the rate of disappearance of vitamin A already present in the tissues, indicating that the inhibitory action may occur in the alimentary tract. The inhibitory effect is not overcome by extra vitamin E administered as α-tocopheryl acetate. The effect of the xanthophyll is not due to a specific impairment of the enzymatic mechanism for the conversion of carotene to vitamin A.Keywords
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