Vitamin A
Introduction
It is an essential human nutrient. It is a fat soluble vitamin
Vitamin A is a generic term for a large number of related compounds(2)
It can be divided into two categories
Ø Retinoids: in foods of animal origin, the major form of vitamin A is an alcohol (retinol), or as an acid (retinoic
acid),they are
called performed vitamin A, but can also exist as an aldehyde (retinal).
Ø Carotenoids...
