Write the coenzymic form of vitamin B1 and explain its physiological role giving reactions.
Vitamins are substances needed in small amounts for normal body functions that the body cannot synthesize in adequate amounts. In many cases vitamins act as cofactors that are needed in order to allow enzymes to perform their important work of facilitating metabolism in the body. In this case the vitamins are called coenzyme vitamins. Some examples of coenzyme vitamins include Vitamin B1 in the form of thiamin diphosphate (or cocarboxylase) and Vitamin B6 in the form of pyridoxal 5’-phosphate.
Coenzyme vitamins and direct precursors of coenzyme vitamins are found in foods in relatively small, but significant amounts. In order to create supplement with larger amounts of vitamins, manufacturers have synthesized vitamins that are similar to but not the same as the coenzyme vitamins that are needed to facilitate metabolism.
Examples of synthesized vitamins are Vitamin B1 as thiamin hydrochloride and vitamin B6 as pyridoxine hydrochloride. Most synthesized forms of vitamins
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