温度对克氏原螯虾消化酶活性的影响

分析了一定pH值下不同反应温度对克氏原螯虾3种主要消化酶活性的影响。结果表明：克氏原螯虾淀粉酶在肝胰脏、肠道、胃的最适温度均为40℃ ；胃蛋白酶在肝胰脏、肠道、胃的最适温度都为35℃；脂肪酶在肝胰脏、肠道、胃的最适温度分别为25，35，25℃ ；胰蛋白酶在肝胰脏、肠道、胃的最适温度分别为55，65，55℃。在最适温度条件下，淀粉酶活性顺序为：胃>肝胰脏>肠；胰蛋白酶和胃蛋白酶活性顺序均为：肝胰脏>胃>肠道；脂肪酶在肝胰脏、肠道活性接近，大于胃内活性。

Effects of temperature on activities of digestive enzymes in Cambarus clarkii

Effects of different temperatures on activities of three digestive enzymes in Cambarus clarkii were examined．The results showed that the optimum temperatures for amylase in hepatopancreas，intestine and stomach were all 40℃ ；while the optimum temperatures for pepsin were all 35℃．In addition，the optimum temperatures for lipase in hepatopancreas，intestine and stomach were 25，35，25℃ ，respectively，and the optimum temperatures for trypase were 55，65，55℃ ，respeclively．At the oplimum reactive temperature，the activity order of amylase in different organs was stomach > hepatopancreas> intestine，meanwhile ，the activity orders of trypase and pepsin were hepatopancreas> stomach > intestine．The activity of lipase in intestine was similar to in hepatopancreas，which was higher than in stomach．