| 花背蟾蜍消化道胚后发育的消化酶活性研究 |
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| 引用本文： | 王昱,何九军.花背蟾蜍消化道胚后发育的消化酶活性研究[J].甘肃高师学报,2010,15(5):19-21. |
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| 作者姓名： | 王昱 何九军 |
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| 作者单位： | 陇南师范高等专科学校科学教育系,甘肃成县742500 |
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| 摘 要： | 利用酶学方法对花背蟾蜍(Bufo raddei stranch)消化道胚后发育(26~39期)的蛋白酶、淀粉酶及脂肪酶活性进行了研究.结果表明,蛋白酶活性大小为:胃>食道>十二指肠>回肠>直肠.淀粉酶活性大小为:回肠>十二指肠>直肠>胃>食道.脂肪酶活性大小为:回肠>十二指肠>胃>直肠>食道.蛋白酶的活性以胃中最高,淀粉酶和脂肪酶则主要分布于肠道.在花背蟾蜍消化道胚后发育过程中,各部位蛋白酶、淀粉酶及脂肪酶的活性呈升高趋势.表明消化酶活性的变化与消化道结构的逐步完善相一致.
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| 关 键 词： | 花背蟾蜍 蛋白酶 淀粉酶 脂肪酶 消化道 胚后发育 |
Study on Digestive Enzyme Activities during the Postembryonic Development of Bufo Raddei Stranch |
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| WANG Yu,HE Jiu-jun.Study on Digestive Enzyme Activities during the Postembryonic Development of Bufo Raddei Stranch[J].Journal of Gansu Normal College,2010,15(5):19-21. |
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| Authors: | WANG Yu HE Jiu-jun |
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| Institution: | (Department of Science education,Longnan Teachers College,Chengxian Gansu 742500) |
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| Abstract: | Activities of three digestive enzyme including protease,amylase and lipase in Bufo raddei stranch were determined during the postembryonic development（stages 26~39） by the zymologic method.Results showed that protease activities ranged as follows： stomach esophagus duodenum ileum rectum.Amylase activities ranged as follows： ileum duodenum rectum stomach esophagus.Lipase activities ranged as follows： ileum duodenum stomach rectum esophagus.Protease activity in stomach was high,but amylase and lipase were distributed in intestine.The activities of the three digestive enzymes were increased during the whole postembryonic development.These indicated that the changes of activities of digestive enzymes were consistent with the diges-tive system gradually perfect. |
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| Keywords: | Bufo raddei stranch protease amylase lipase digestive tract postembryonic development |
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