Friday, October 24, 2008

vitamin B3

Vitamin B3
The proper chemical name of vitamin B3 is Nicotinic acid OR Niacin.


Principle Sources

  • Meat
  • Wholemeal bread
  • Yeast extract
  • Liver
  • Poultry
  • Canned tuna and Salmon
  • Whole grain and enriched cereals
  • Dried beans and peas
  • Nuts

Function

  • Essential component of the coenzymes NAD, NADP which are hydrogen acceptors for a range of dehydrogenase enzymes.
  • This vitamin is also a part of coenzyme A.

Deficiency diseases and Symptoms

  • Pellagra-the first symptom of which is a sunburnlike eruption that breaks out where the skin is exposed to sunlight. Later symptoms are a red and swollen tongue
    diarrhea
    mental confusion
    irritability
    when the central nervous system is affected, depression and mental disturbances.

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