【摘要】 试验研究了pH值对黑鲷胃、肠及肝胰脏中蛋白酶、淀粉酶和脂肪酶等3种主要消化酶活力的影响。结果表明:在黑鲷正常的消化道酸碱条件下(胃pH值2 5,肠pH值7 5),蛋白酶活力大小顺序为:胃>肠>肝胰脏;淀粉酶活力大小顺序为:肝胰脏>肠>胃;脂肪酶大小顺序为:肠>肝胰脏>胃。胃蛋白酶、淀粉酶和脂肪酶的最适pH值分别为2 0,5 0和4 0,均在酸性范围;肠蛋白酶、淀粉酶、脂肪酶的最适pH值分别是7 0,7 0,7 5,肝胰脏蛋白酶、淀粉酶、脂肪酶的最适pH值分别是7 5,7 0,7 0,均为中性或略偏碱性。更多还原

【Abstract】 In this paper,the effects of pH value on the main digestive enzyme activities in intestinal canal and hepatopancreas in Sparus macrocephalus were studied. The results showed:in normal pH value in Sparus macrocephalus,the trend of protease activities of the intestinal canal and hepatopancreas are stomach>intestine>hepatopancreas,the trend of amylase activities of the intestinal canal and hepatopancreas are hepatopancreas>intestine>stomach, and the trend of lipase activities of the intestinal canal and hepatopancreas are intestine>hepatopancreas>stomach. The optimum pH values of stomach, intestine and hepatopancreasfor protease are 2.0,7.0,7.5 respectively,for amylase are 5.0,7.0,7.0 ,and for lipase are 4.0,7.5,7.0更多还原