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维生素是人类生命活动中不可缺少的一类物质。医学科学家研究发现,人类为了维持生命与健康,除了阳光与空气外,还必须从食物中摄取糖类、油脂、蛋白质、维生素、无机盐和水分。由于许多维生素是人体自身不能合成的,必须从食物或药物中摄取,所以“了解人体必需的维生素的主要来源及其摄入途径,了解维生素在人体中的作用”是化学课程标准“化学与生活”模块中主题1的课标要求。到目前为止,已经发现的维生素有20多种,一般根据其溶解性分为两大类:脂溶性维生素和水溶性维生素。由于在维生
Vitamins are indispensable to human life and activity. Medical scientists study found that in order to maintain life and health, humans, in addition to the sun and air, but also from food intake of carbohydrates, fats, proteins, vitamins, minerals and water. Because many vitamins are not synthesized by the body, they must be taken from food or medicine. Therefore, we should understand the main sources of vitamins and their intake and understand the role of vitamins in the human body. Chemistry and Life "module 1 subject of the standard requirements. So far, there have been more than 20 kinds of vitamins that have been found, which are generally divided into two categories according to their solubility: fat-soluble vitamins and water-soluble vitamins. Because of living