Wang Weina, Sun Ruyong, Wang Anli, Bao Lei, Wang Peng
Department of Biology, Beijing Normal University, Beijing 100875.
Ying Yong Sheng Tai Xue Bao. 2002 Sep;13(9):1153-6.
The activities of digestive enzymes and alkaline phosphatase from the hepatopancreas of Macrobrochium nipponense were determined under different environmental factors (calcium concentrations 20 mg.L-1, 35 mg.L-1, 60 mg.L-1, 80 mg.L-1, 150 mg.L-1; salinity 7@1000, 14@1000, pH 7.6, 8.8, 9.8). The results showed that higher Ca2+ concentration could enhance the pepsin activity, but inhibit the trysin-like activity in hepatopancreas of M. nipponense. The activities of pepsin, trysin-like, alkaline phosphatase in hepatopancreas of M. nipponense were higher under salinity of 14@1000 than under salinity of 7@1000 and 20@1000. It showed that the activities of digestive enzymes and alkaline phosphatase of shrimp increased gradually with increasing pH value from 7.6 to 9.8.
在不同环境因素（钙浓度20毫克/升、35毫克/升、60毫克/升、80毫克/升、150毫克/升；盐度7‰、14‰、20‰，pH值7.6、8.8、9.8）下测定了日本沼虾肝胰腺中消化酶和碱性磷酸酶的活性。结果表明，较高的Ca2+浓度可增强日本沼虾肝胰腺中的胃蛋白酶活性，但抑制类胰蛋白酶活性。日本沼虾肝胰腺中胃蛋白酶、类胰蛋白酶、碱性磷酸酶的活性在盐度14‰时高于盐度7‰和20‰时。结果表明，随着pH值从7.6增加到9.8，虾的消化酶和碱性磷酸酶活性逐渐增加。
