Preliminary studies on the effect of pH value on the digestive enzyme activities of Pangasius Sutchi (Fowier)
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摘要: 初步探讨了不同pH值对苏氏圆腹(鱼芒)(淡水白鲨和淡水黑鲨)的消化器官(肝、肠、胃)蛋白酶和淀粉酶活性的影响。结果表明,随pH值的变化,酶活性也随之变化;淡水白鲨的肝、肠、胃蛋白酶的最适pH值分别为7.0、7.8和3.0,淀粉酶的最适pH值分别为7.0、6.2和7.0;淡水黑鲨的肝、肠、胃蛋白酶的最适pH值分别为7.0、7.8和3.0,淀粉酶的最适pH值分别为7.0、7.0和7.0。其中蛋白酶活性表现为胃>肝>肠,淀粉酶活性表现为肝>胃>肠。淡水黑鲨的酶活性>淡水白鲨的酶活性。Abstract: The effects of pH values on the protease and amylase activities in different digestive organs (liver, intestines and stomach) of Pangasius Sutchi (Fowier) were preliminarily studied.The results showed that the enzyme activities changed with the variation of pH value, among which the optimum pH for protease were 7.0, 7.8 and 3.0 respectively in the liver, intestine and stomach, and for the amylase were 7.0, 6.2 and 7.0 in the white Fowier.In the black Fowier, the optimum pH values for protease were 7.0, 7.8 and 3.0, and for the amylase were 7.0, 7.0 and 7.0.The protease activities was stomach>liver>intestine and the amylase activities was liver> stomach>intestine.The enzyme activities of the black Fowier were all higher than those of the white one.
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Key words:
- Pangasius Sutchi /
- Digestive enzyme /
- Protease /
- Amylase /
- Activity
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[8] Crostom C B.Tryptic enzymes of Chinook Salmon[J].Archives of Biochem and BiopHysis,1960,89:202-206. [11] Jany K D.Studies on the digestive enzymes of the stomachess bony fish,Carassius auratus giblio (Bloch):Endopetidases[J].Comp Biochem Physiol,1976,536:31-38. -
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