Vitamins (GATE - XL)

Isoprene acts as a building block for most of the naturally-occurring fat-soluble vitamins.

Halibut provides the maximum amount of vitamin A.

Alpha-lipoic acid is a cofactor of pyruvate dehydrogenase complex and several other enzyme complexes.

D4 is produced by irradiation of 22-dehydroergosterol.

Folic acid differs from other vitamins of B9 group becuase it contains one glutamic acid group in the structure.

K1 was discovered from alfalfa by Dam in 1939.

In the human body, vitamin C is stored in the adrenal cortex.

As per RDI, folic acid is required in the highest amount by the body.

Riboflavin belongs to a class of water-soluble pigments called lyochromes.

Riboflavin is an orange-yellow crystalline powder, insoluble in ether and chloroform, heat stable, light sensitive and glows yellow-green in an aqueous solution.

The splitting of beta-carotene into retinal is carried out in the intestine by the intestinal enzyme.

Biotin acts as a growth factor for Rhizobium. Thus, it is called coenzyme R.

Tocopherol gives characteristic band at 293 nm.