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维生素是维持机体正常生命活动所必需的一类低分子有机化合物。大多数维生素是作为辅酶或辅基的组成成分,参与体内的代谢过程。有些维生素虽不作为辅酶或辅基的组分,但是却具有某些特殊的生理功能。
Vitamins are a class of low molecular weight organic compounds necessary to maintain the normal life activity of the body. Most vitamins act as components of coenzymes or prosthetic groups and are involved in metabolic processes in the body. Some vitamins, although not as coenzymes or prosthetic groups, have certain physiological functions.