黄鳝消化酶活性与温度的关系

Relationship Between Activity of Digestive Enzymes of Monopterus albus Inenw and Temperature

报道了3种黄鳝消化酶在不同反应温度和不同的饲养温度下的活性变化.在20～45℃反应温度内,蛋白酶和淀粉酶的活性随温度升高而增加,其中蛋白酶活性在25℃以上增加较快,超过45℃酶活性下降.在20～40℃饲养水温下,3种酶活性随水温升高而增加,但增幅不同.与反应温度比较,脂肪酶活性增幅前者大于后者,蛋白酶活性增幅则前者远大于后者,淀粉酶活性增幅前者略小于后者.

The variation of activities of three digestive enzymes in Monopterus albus Inenw at different reactive temperature and different cultural temperature were reported. In the range from 20 ℃ to 45 ℃, the higher the reactive temperature was, the higher the activities of protease and amylase were. The activity raised faster for protease above 25 ℃. Above 45 ℃, activities of three digestive enzymes were decreased gradually. During the cultural period from 20 ℃ to 40 ℃, the higher the cultural temperature was, the higher the activities of three digestive enzymes, but there were some difference among them. The activity of lipase at neaclive temperature was lower than that at cultural temperature, the activity of protease was much lower than that at cultural temperature, but the activity of amylase was adverse.