高中化学课本(甲种本)第三册163页的课文中对肽和肽键是这样定义的:“一分子氨基酸中的羧基跟另一分子氨基酸中的氨基之间消去水分子,经缩合反应生成的产物叫做肽,其中的酰胺基结构-CO-NH-叫做肽键。”此说值得商榷。我认为这定义不严密。大家知道,蛋白质在酸、碱或酶的作用下,都可发生水解,经过多肽最后得 The peptide and peptide bonds are defined in the 163-page text of High School Chemistry Textbook No. 3 (Volume III): “The elimination of water molecules between the carboxyl group in one molecule of an amino acid and the amino group in another molecule’s amino acid undergoes a condensation reaction. The resulting product is called a peptide, in which the amide structure -CO-NH- is called a peptide bond.” This is debatable. I think this definition is not strict. As we all know, proteins can be hydrolyzed by the action of acids, bases, or enzymes.