Table 2. Summary of functions of vitamins.


Vitamin


Water Soluble Vitamins


C (Ascorbic acid)






Thiamine (B1)





Riboflavin (B2 G)


Niacin


Pyridoxine (B6)




Pantothenic acid



Choline


Inositol


Involved in connective tissue formation.
Prevention of scurvy.
Interrelated with fat and protein metabolism.
Intercellular constituent.
Anti-oxidant
Sperm motility.

Essential in CHO metabolism.
Constituent of enzrmne systems.
Prevents beri-beri.
Involved in nerve function.
Involved in normal heart function.

Constituent of many enzyme systems.
Involved in visual processes.

Prevents pellagra.
Constituent of enzyme systems.

Necessary for normal adrenal-cortical function.
Growth factor.
Component of many enzyme systems.
Necessary for normal vision.

Necessary for normal skin, central nervous
 system and growth.
Component of many enzyme systems.

Involved in transmethylation reaction.
Lipotropic factor.
Precursor of acetylcholine.
Necessary for normal liver function.
Interrelated with other nutrients.


Lipotropic factor.


Biotin


Pteroylglutamic acid
 (PGA, Folic acid)


p-Aminobenzoic acid (PABA)


Growth factor.
Involved in many enzyme systems.

Growth factor.
Involved in hematapoieses.
Transmethylation factor.
Involved in enzyme systems.


Growth promoter.
Insufficient information about this vitamin.

Growth promoter.
Involved in hematopoises, transmethylation.


Function