维生素(Vitamin)是维持机体正常代谢和功能所必需的一类有机化合物,是人体7大营养要素(糖、脂肪、蛋白质、维生素、矿物质和微量元素、膳食纤维、水)之一。人体对维生素的需求量甚微,但人体内不能自己合成或合成不足,必须依靠食物摄取。如果缺乏维生素,就会引起多种疾病,因此维生素是维持生命不可缺少的要素。 半个世纪以来,维生素 Vitamin is an organic compound necessary to maintain the body’s normal metabolism and function. It is one of the seven major nutrients (sugar, fat, protein, vitamins, minerals and trace elements, dietary fiber and water) in human body. The body’s demand for vitamins is minimal, but the body can not synthesize or synthesis deficiencies, we must rely on food intake. If lack of vitamins, can cause a variety of diseases, so vitamins are indispensable to maintain life elements. For half a century, vitamins