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Retinol, also called vitamin A 1, is a fat-soluble vitamin in the vitamin A family that is found in food and used as a dietary supplement. [3] Retinol or other forms of vitamin A are needed for vision, cellular development, maintenance of skin and mucous membranes, immune function and reproductive development. [3]
Vitamin A is a fat-soluble vitamin that is an essential nutrient.The term "vitamin A" encompasses a group of chemically related organic compounds that includes retinol, retinyl esters, and several provitamin (precursor) carotenoids, most notably β-carotene (beta-carotene).
vitamin A is no longer measured in international units, rather, currently we use retinol equivalents to account for the lower retinol actually usable in the body from carontenoids. so 1 retinol equivalent (RE) is 1ug of retinol or 3.33 IU of vitamin A from retinyl ester sources (retinol) and 10 IU from beta-carotene sources like vegetables. i ...
Dermatologists explain the difference between retinol and retinoids, including strength and their effects on wrinkles and acne. Discover the right one for you.
from animal origin as vitamin A / all-trans-retinol: ... the translation failed to state that it was a newly discovered nutrient, a claim made in the original ...
Retinyl acetate (retinol acetate, vitamin A acetate) is a natural [dubious – discuss] form of vitamin A which is the acetate ester of retinol. It has potential antineoplastic and chemopreventive activities.
Retinyl palmitate, or vitamin A palmitate, is the ester of retinol and palmitic acid, with formula C 36 H 60 O 2. It is the most abundant form of vitamin A storage in animals. [2] An alternate spelling, retinol palmitate, which violates the -yl organic chemical naming convention for esters, is also frequently seen. [citation needed]
Like retinol equivalent, the international unit does not take into account carotenoid variable absorption and conversion to vitamin A by humans, as well as the more modern retinol activity equivalent. Food and supplement labels still generally use IU, but IU can be converted to the more useful retinol activity equivalent as follows: [19]