Vitamin B7 (Biotin)

We are the famous exporter and manufacturer, exporter and supplier of Vitamin B7 (biotin) in Zhengzhou, Henan, China. Biotin is a water-soluble B-vitamin (vitamin B7), formerly known as vitamin H or coenzyme R. It is composed of a ureido (tetrahydroimidizalone) ring fused with a tetrahydrothiophene ring. A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring. Biotin is a coenzyme for carboxylase enzymes, involved in the synthesis of fatty acids, isoleucine, and valine, and in gluconeogenesis. Biotin is also called vitamin H (the H represents Haar und Haut, German words for "hair and skin") or vitamin B7. Studies on its bioavailability have been conducted in rats and in chicks. Based on these studies, biotin bioavailability may be low or variable, depending on the type of food being consumed. In general, biotin exists in food as protein-bound form or biocytin. Proteolysis by protease is required prior to absorption. This process assists free biotin release from biocytin and protein-bound biotin. The biotin present in corn is readily available; however, most grains have about a 20-40% bioavailability of biotin.