Abstract
This chapter deals with the introduction, classification and biological functions of vitamins. The deficiencies caused by water-insoluble vitamins such as vitamin-A, vitamin-D, vitamin-E and vitamin-K and water-soluble vitamins such as vitamin-C and the vitamin-B complex have been discussed in detail. The structure and properties of various types of vitamins are also part of this subject.
Keywords: Ascorbic acid, Biotin, Niacin, Pyridoxine, Riboflavin, Tocopherols, Vitamin.