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二、维生素与肌体代谢维生素(vitamin)是维持人体正常物质代谢和某些特殊生理功能不可缺少的低分子有机化合物,主要参与各种酶的组成,因其结构和理化性质不同,使其各具特殊的生理功能。它们不是构成肌体组织的原料,也不能为肌体提供热能,只需少量即能满足肌体的生理需要。维生素是维持和调节肌体正常代谢的重要物质,是以“生物活性物质”的形式存在于人体组织中。
Second, vitamin and body metabolism Vitamin (vitamin) is to maintain the normal metabolism of the human body and some special physiological functions indispensable low molecular weight organic compounds, mainly involved in the composition of various enzymes, because of their different physical and chemical properties, Special physiological function. They do not constitute the raw material of the body tissue, nor the body to provide heat, only a small amount that can meet the physical needs of the body. Vitamins are important substances that maintain and regulate the normal metabolism of the body, and are present in human tissues in the form of “bioactive substances”.