The importance of the three endopeptidases contributing to the formation of AA-N was metallo-, cysteine, and serine peptidase in turn.
金属蛋白酶、半胱氨酸蛋白酶在游离氨基酸的形成过程中起主要作用,丝氨酸蛋白酶次之;
2
Aspartic peptidase made little contribution on the formation of NH3-N and AA-N. degradation of protein into peptides was attributed to aspartic-and cysteine peptidases.