氨基酸是动、植物躯体中蛋白质和肽的结构单位。一个蛋白质分子大约有100-10000个氨基酸分子,以肽键彼此相连结。蛋白质不稳定,动、植物死亡之后,在氧化条件下迅速分解,产生氨,或者在酶的催化作用下脱羧基和氨基。在还原条件下,即使没有酶的参加,蛋白质亦会水解,而且速度很快,一般不超过1-10万年,蛋白质就基本消失,只能以氨基酸形 Amino acids are the structural units of proteins and peptides in the body and body of animals. A protein molecule has about 100-10000 amino acid molecules, linked by peptide bonds. Protein instability, moving, plant death, the rapid decomposition under the conditions of oxidation, resulting in ammonia, or in the catalytic role of decarboxylation and amino. In reducing conditions, even without enzyme participation, the protein will be hydrolyzed, but also very fast, usually not more than 1-10 million years, the protein disappeared, only amino acid