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维生素是机体维持正常代谢功能所必需的一类物质。体内不能合成,通常来自食物。自1879年发现乳黄素即核黄素(B_2)至1913年取得硫胺(B_1),到从大豆中提取血凝不可缺少的 Vit.Q 以及胃肠功能调节剂Vit.BT 即康胃素、氯化〔N—(β—羟丁
Vitamins are a type of substance necessary for the body to maintain normal metabolic functions. The body can not be synthesized, usually from food. Since 1879, it was discovered that riboflavin (B_2) was obtained from 1921 to thiamine (B_1) from 1913 to Vit.Q, which is indispensable for the extraction of blood clotting from soybean, and Vit.BT, , [N- (β-hydroxybutyrate