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维生素C,又称丙种维生素,VitaminumC,抗坏血酸(Ascorbic acid),简称维C或Vc。维生素C是一种酸性己糖衍生物。化学名称为L—3—氧带苏己糖醛酸内酯。分子式为C_6H_8O_6,分子量为176.1。1维生素C的性状 外观为白色结晶粉末,有酸味,久置色渐变微黄色,易溶于水,水溶液呈酸性反应。稍溶于乙醇,微溶于甘油,不溶于乙醚和氯仿。熔点为190℃。抗坏血酸钠为白色或微黄色结晶粉末,略带酸味,只溶于水,基本上不溶于乙醇、乙醚等。在220℃时分解。 维生素C是动物的重要营养成分之一,是维持机体正常代谢和生理机能不可缺少的物质。维生素C参与动物体内氧化还原过程,影响核酸的形成,又是某些酶和辅酶的组成部分。它是增进机体非特异性免疫反应的辅助药物。它具有多方面的作用与功能。
Vitamin C, also known as vitamin C, VitaminumC, ascorbic acid (Ascorbic acid), referred to as Victoria C or Vc. Vitamin C is an acidic hexose derivative. The chemical name is L-3-oxyhexosidine lactone. The molecular formula of C_6H_8O_6, the molecular weight of 176.1.1 Vitamin C Appearance Appearance white crystalline powder, sour, long-lasting pale yellow gradient, soluble in water, acidic aqueous solution. Slightly soluble in ethanol, slightly soluble in glycerol, insoluble in ether and chloroform. The melting point is 190 ° C. Sodium ascorbate is white or slightly yellow crystalline powder, slightly sour, soluble in water, basically insoluble in ethanol, ether and so on. At 220 ℃ decomposition. Vitamin C is one of the important nutritional components of animals and is an indispensable substance for maintaining the normal metabolism and physiological functions of the body. Vitamin C is involved in the body’s redox process, affecting the formation of nucleic acids, but also part of some enzymes and coenzymes. It is to promote the body’s non-specific immune response to the auxiliary drug. It has many functions and functions.