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Posted by : Razib smile Monday, July 22, 2013
What is Vitamins ?
Vitamin may be defined as organic chemical substance, minute quantity of which is required and essential for the growth, development and maintenance of body . Only a few vitamins are synthesized in human body . As for example : vitamin K is synthesized in the body by intestinal symbiotic bacteria . Other than , vitamin D is synthesized in the skin by ultraviolet ray .
Types of Vitamins :
According to the solubility ,Vitamin may be classified into ;
1. Fat soluble vitamins
2. Water soluble vitamins
Fat soluble vitamins:
Fat soluble vitamins are those which are soluble in fat soluble solvent .They are easily stored within the body for a long time in the liver and subcutaneous tissue. They are ----
a) Vitamin A or Retinol
b) Vitamin D or Calciferol
c) Vitamin E or Tocopherol
d) Vitamin K or Anti- haemorrhagic factor.
Water soluble vitamin : -
Water soluble vitamins are those which are soluble in water . They cannot be stored in the body more than 48 to 72 hours . They are..
a) Vitamin B complex.
b) Vitamin C or Ascorbic acid .
Daily Requirements Of different Vitamins :
Vitamin Normal pregnant Mother
Vitamin A 5000 i.u 6000- 8000 i.u
Vitamin D 400 i.u 500 - 800 i.u
Vitamin E 15 -20 i.u
8-10 mg daily
Vitamin K It is synthesized within the body according to
the requirement . But incase of hemorrhagic
disease 5 mg is administered orally or in injection from .
Vitamin C 45 mg.
Vitamin B Complex
B1 Thiamin 1.2mg 1.6 mg
B2 Riboflavin 1.5mg 1.8 mg
B3 Pantathonic acid 5-10 mg
B5 Nicotinic acid 12-18mg
B6 Pyridoxin 2 mg 2-5 mg
B12 Cyano cobalomin 3mg 4-5 mg
Biotin 1.2 - 2.4mg
Folic acid 0.4mg
Greater will be the person's size ,greater will be the requirement . In growing children requirement is greater.