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Vitamine B7

Constituents

Vitamine B7=Vitamine B8 (France)=Vitamine H=biotine

- fusion of imidazolidine and thiolane rings

Provenience

- animal: liver, kidneys, yeast .. - vegetable: legumes, nuts, chocolate ..

Action

Bound to a protein, it catalyzes several important biochemical reactions

Needs

Low quantities, need generally covered by the intestinal bacteria that synthesize it.

Deficiency

Avidin, a protein from raw egg white, binds to biotin and makes it inactive. - neurological disorders - muscle aches - pale tongue - dry skin