Vitamine B7=Vitamine B8 (France)=Vitamine H=biotine
- fusion of imidazolidine and thiolane rings
- animal: liver, kidneys, yeast .. - vegetable: legumes, nuts, chocolate ..
Bound to a protein, it catalyzes several important biochemical reactions
Low quantities, need generally covered by the intestinal bacteria that synthesize it.
Avidin, a protein from raw egg white, binds to biotin and makes it inactive. - neurological disorders - muscle aches - pale tongue - dry skin