VITAMIN:

                       Hopkins discovered in 1912 that there are other nutrient required for optimal development in addition to carbohydrates, protein and lipids. Despite the fact that these compound were only required in modest amount., they were considered accessory Growth factor. These compound were later given the name vitamin by Funk. Vitamin B1 (thiamin) was discovered by him.

 

Types of vitamin:

                                                           On the basis of solubility, there are two types of vitamins.

 

1. WATER SOLUBLE VITAMIN:

                                                             Those vitamin which are soluble in water are called water soluble vitamin. These vitamin are obtained from cereals and fruit. Generally, vitamin B(complex) and vitamin C are water soluble vitamin. These vitamin are not stored in body if we take this vitamin in excess, they cannot harm us. Further, these vitamin are easily excreted from our body.

 


2. FAT SOLUBLE VITAMIN:

                                               Those vitamin which are soluble in fats and organic solvent are called fat soluble vitamin.  Vitamin A,D(sunshine),E and K are fat soluble vitamin and are stored in body for a long period these vitamin are obtained from Lipids. If we take this vitamin they cannot harm us and cause diseases. For example excess a vitamin A cause irritation and headache, vitamin D calcification and pain in bones, vitamin E fatigue and headache and K liver and kidney disease.