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重要作用蛋白质是一类由多数氨基酸组成的大分子化合物,它们的元素组成基本相似,含有碳、氢、氧、氮和硫等。蛋白质在人和动物体内的功用是构成体质,它不仅是细胞内的主要物质,而且是各种膜、腱、骨骼和酶等的组成物。在自然界里,绝大多数的微生物和植物能够利用天然的非蛋白氨素合成自身所需要的蛋白质。而人和动物就没有这种能力,只能从食物中得到不断补充。研究证明,成人每天按1公斤体重计算,需补充1.5克的蛋白质,孕妇和授乳时期的妇女,需要量为1.5—2.5克,儿童和病后初愈的人,其需要量就更多了。蛋白质的营养价值高低,决定于它的可消化程度及其所含的氨基酸种类和数量。医学上
Important role Proteins are a class of macromolecular compounds composed of the majority of amino acids, their elemental composition is basically similar, containing carbon, hydrogen, oxygen, nitrogen and sulfur. The function of protein in human and animal body is constitutional body. It is not only the main substance in cells, but also the composition of various membranes, tendons, bones and enzymes. In nature, the vast majority of microorganisms and plants can use natural non-protein ammonia to synthesize their own needs of the protein. And humans and animals do not have this ability, can only be constantly added from the food. Studies have shown that adults need 1 gram of body weight per day, need to add 1.5 grams of protein, pregnant women and lactating women, the required amount of 1.5-2.5 grams, children and those who recover after the illness, the need for more. The nutritional value of protein depends on its digestibility and the type and amount of amino acids it contains. Medical