皮革科学与工程 ›› 2020, Vol. 30 ›› Issue (3): 40-46.doi: 10.19677/j.issn.1004-7964.2020.03.007

• 材料工艺技术 • 上一篇    下一篇

不同来源胰蛋白酶的性能及软化效果

鲜娇1,2, 卜德懿1,2, 田永鑫1,2, 张春晓1,2, 彭必雨1,2,*, 龙忠珍3   

  1. 1.制革清洁技术国家工程实验室(四川大学),四川 成都 610065;
    2.皮革化学与工程教育部重点实验室(四川大学),四川 成都 610065;
    3.江苏鸿丰高分子材料有限公司,江苏 徐州 610065
  • 收稿日期:2019-12-01 出版日期:2020-06-28 上线日期:2020-05-26
  • 通讯作者: *彭必雨(1969-),男,教授,028-85401208,pengbiyu@scu.edu.cn;主要研究方向:制革生物技术。
  • 作者简介:鲜娇(1994-),女,硕士研究生,xianj0101@163.com;研究方向:酶应用技术。
  • 基金资助:
    十三五国家重点研发计划项目(2017YFB0308402); 四川省科技成果转化项目(2017CC0080); 四川大学大学生创新创业训练计划项目(C2019107371)

Properties and Bating Effects of Trypsins from Different Sources

XIAN Jiao1,2, BU Deyi1,2, TIAN Yongxin1,2, ZHANG Chunxiao1,2, PENG Biyu1,2,*, LONG Zhongzhen3   

  1. 1.National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
    2.Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China;
    3.Xuzhou Hoffen chemicals Co., LTD, Xuzhou 221200, China
  • Received:2019-12-01 Published:2020-06-28 Online:2020-05-26

摘要: 研究了2种微生物胰蛋白酶(NB115和 JD8)的基本酶学特性及其对酪蛋白、胶原蛋白和弹性蛋白等底物的作用性能,考察了它们对脱灰裸皮的软化效果,并与2种典型的动物胰蛋白酶(DY300和PTN110)进行了比较。结果表明:四种胰蛋白酶在pH值7~9之间有较高的活力,在25~45 ℃范围,它们的酪蛋白和胶原蛋白活力均随温度的升高而增加;NB115和PTN110具有较高的耐温性能,JD18和DY300的耐温性能较差。它们对不同底物的作用性能有较大的差异,在相同的酪蛋白活力下,JD18有更高的胶原蛋白活力,但其无弹性蛋白活力;DY300具有相对较高的弹性蛋白活力。由于它们对皮结构蛋白的作用性能的差异,其软化皮革的柔软度和粒面紧实度有一定的差异,适合不同类型皮革的软化。

关键词: 微生物胰蛋白酶, 动物胰蛋白酶, 软化

Abstract: The basic enzymatic properties of two kinds of microbial trypsins (NB115 and JD8) toward different protein substates and their bating effects were investigated and compared with the two typical animal trypsins (DY300 and PTN110). The results showed that the four trypsins exhibited the high activities in the pH range of 7-9, and their activities toward casein and collagen increased with the increase of temperature in the range of 25-45. NB115 and PTN110 had the higher temperature resistance than JD18 and DY300. Under the same casein activity, JD18 had higher collagenolytic activity, but no elastolytic activity. DY300 had relatively high elastolytic activity. Due to the differences of their properties acting on the structural proteins, the softness and firmness of the leather bated with the trypsins were different, and they were suitable for the bating process of different types of leather.

Key words: microbial trypsin, animal trypsin, bating

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