Vitamin B7

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File:Biotin.png
Vitamin B7 structure

Biotin Vitamin B7 , vitamin H, factor R - Several scholars have described it, only later discovered that it is the same substance) is important for the metabolism of amino acids and fatty acids, is a cofactor for carboxylases.

Source[✎ edit | edit source]

At low concentrations in many foods. Rich sources are yeast, liver, egg yolk, nuts, lentils. The daily requirement (RDA can not be estimated): 30-60 mg

Deficit[✎ edit | edit source]

Deficiency of food does not occur. Scientists described the people who long consumed a large amount of raw eggs (irreversibly binds to biotin with avidin contained in raw egg white) and improper parenteral nutrition. Symptoms : seborrheic dermatitis , fatigue, anorexia , nausea ,hypercholesterolemia , vascular disorders.

Surplus[✎ edit | edit source]

Signs of excess are not known.


Links[✎ edit | edit source]

Related articles[✎ edit | edit source]

Bibliography[✎ edit | edit source]

  • BENCKO, Vladimir, et al. Hygiene and epidemiology : selected chapters. 2. edition. Prague. 2008. ISBN 80-246-0793-X.