食品科学 ›› 2018, Vol. 39 ›› Issue (2): 88-92.doi: 10.7506/spkx1002-6630-201802014

• 生物工程 • 上一篇    下一篇

内源酶对刺参肠自溶的作用

李傲婷,杜椅楠,段秀红,柴晓倩,吴超,唐越,于翠平,吴海涛*   

  1. (大连工业大学食品学院,国家海洋食品工程技术研究中心,辽宁?大连 116034)
  • 出版日期:2018-01-25 发布日期:2018-01-05
  • 作者简介:李傲婷,杜椅楠,段秀红,柴晓倩,吴超,唐越,于翠平,吴海涛
  • 基金资助:
    国家自然科学基金面上项目(31370037);大连市高层次人才创新支持计划项目(2015R083)

Effect of Endogenous Enzymes on Autolysis of Sea Cucumber Stichopus japonicus Guts

LI Aoting, DU Yinan, DUAN Xiuhong, CHAI Xiaoqian, WU Chao, TANG Yue, YU Cuiping, WU Haitao*   

  1. (National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China)
  • Online:2018-01-25 Published:2018-01-05

摘要: 以刺参肠为原料,通过诱导自溶并添加各种酶抑制剂,以三氯乙酸可溶性寡肽和还原糖释放量为指标,并采用聚丙烯酰胺凝胶电泳检测方法,研究内源酶在刺参肠自溶过程中的作用。结果表明,在一定的浓度范围内,胃蛋白酶抑制剂、胰蛋白酶抑制剂、丝氨酸蛋白酶抑制剂、α-淀粉酶抑制剂和β-1,3-葡萄糖苷酶抑制剂对刺参肠的自溶均具有一定的抑制作用,且丝氨酸蛋白酶抑制剂N-甲苯磺酰-L-赖氨酸氯甲基化酮作用较强。说明胃蛋白酶、胰蛋白酶、丝氨酸蛋白酶、α-淀粉酶和β-1,3-葡萄糖苷酶参与刺参肠自溶过程。

关键词: 刺参, 肠, 自溶, 内源酶, 丝氨酸蛋白酶

Abstract: The effect of endogenous enzymes on the autolysis of sea cucumber (Stichopus japonicas) guts was studied by addition of various protease inhibitors. The autolysis was evaluated by the release of trichloroacetic acid (TCA)-soluble oligopeptides and reducing sugar, and detected by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The results indicated that different inhibitors, including pepsin inhibitor, trypsin inhibitor, serine protease inhibitor, amylase inhibitor and β-1,3-glucanase inhibitor showed inhibitory effects on the autolysis of S. japonicus guts in a certain range of concentration. The serine protease inhibitor N-tosyl-L-phenylalaninyl-chloromethyl ketone (TPCK) showed relatively higher inhibitory effect than the other inhibitors. These results suggest endogenous enzymes, including pepsin, trypsin, serine proteases, amylase and β-1,3-glucanase, may be involved in the autolysis of S. japonicus guts.

Key words: Stichopus japonicus, guts, autolysis, endogenous enzymes, serine proteases

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