What is retinol?

  • (noun): An unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene.
    Synonyms: vitamin A1


Retinol is one of the animal forms of vitamin A. It is a diterpenoid and an alcohol. It is convertible to other forms of vitamin A, and the retinyl ester derivative of the alcohol serves as the storage form of the vitamin in animals.

Read more about Retinol.

Some articles on retinol:

Lipocalin - Function - Retinoid Binding
... Retinol, (vitamin A), is an important micronutrient that affects eyesight, cell differentiation, immune system function, bone growth, and tumor suppression ... Retinol absorption and metabolism depends on lipocalins that act as binding proteins ... After intake, they are converted to retinol, successively metabolized, and finally bound to retinol binding proteins (lipocalins) in the blood plasma ...
All-trans-retinol 13,14-reductase
... In enzymology, an all-trans-retinol 13,14-reductase (EC is an enzyme that catalyzes the chemical reaction all-trans-13,14-dihydroretinol + acceptor all-trans-retinol + reduced acceptor Thus ... saturation of the 13-14 double bond of all-trans-retinol ... Other names in common use include retinol saturase, RetSat, (13,14)-all-trans-retinol saturase, and all-trans-retinolall-trans-13,14-dihydroretinol saturase ...
Phosphatidylcholine-retinol O-acyltransferase
... In enzymology, a phosphatidylcholine---retinol O-acyltransferase (EC is an enzyme that catalyzes the chemical reaction phosphatidylcholine + retinol--- 2-acylglyce ... Other names in common use include lecithin---retinol acyltransferase, phosphatidylcholineretinol-(cellular-retinol-binding-protein), and O-acyltransferase ...
TROL - Equivalencies of Retinoids and Carotenoids (IU)
... been made to determine how much of them in the diet is equivalent to a particular amount of retinol, so that comparisons can be made of the benefit of ... in which an international unit (IU) was equal to 0.3 μg of retinol, 0.6 μg of β-carotene, or 1.2 μg of other provitamin-A carotenoids was used ... Later, a unit called retinol equivalent (RE) was introduced ...