食品科学 ›› 2010, Vol. 31 ›› Issue (13): 244-248.doi: 10.7506/spkx1002-6630-201013056

• 生物工程 • 上一篇    下一篇

超声波辅助分步酶解法制备菜籽肽及复合酶筛选

朱均旺1,鞠兴荣1,*,王立峰1,2,袁 建1,何 荣1,2   

  1. 1.南京财经大学食品科学与工程学院,江苏省粮油品质控制及深加工技术重点实验室
    2.江南大学食品学院
  • 收稿日期:2010-01-25 修回日期:2010-05-22 出版日期:2010-07-01 发布日期:2010-12-29
  • 通讯作者: 鞠兴荣 E-mail:xingrongju@163.com
  • 基金资助:

    国家农业成果转化项目(2009C10045);国家“863”计划项目(2007AA10Z331);
    江苏省教育厅自然科学研究项目(08KJB55004);江苏省普通高校研究生科研创新计划项目(CX09S _ 046Z)

Ultrasonic-assisted Stepwise Enzymatic Hydrolysis of Rapeseed Meal Protein and Screening of Enzymes

ZHU Jun-wang1,JU Xing-rong1,*,WANG Li-feng1,2,YUAN Jian1,HE Rong1,2   

  1. 1. College of Food Science and Engineering,Nanjing University of Finance and Economics, Key Laboratory of Grain and Oils Quality
    Control and Deep-utilizing Technology of Jiangsu Province, Nanjing 210003, China;2. School of Food Science and Technology,
    Jiangnan University, Wuxi 214122, China
  • Received:2010-01-25 Revised:2010-05-22 Online:2010-07-01 Published:2010-12-29
  • Contact: JU Xing-rong1,*, E-mail:xingrongju@163.com

摘要:

以反胶束法萃取得到的菜籽粕蛋白液为原料,以酶解产物的水解度、三氯乙酸氮溶解指数和肽得率为评价指标,并参照酶解液肽的分子量分布,考察超声波辅助分步酶解法对原料水解的影响。从木瓜蛋白酶、复合蛋白酶、碱性蛋白酶、复合风味酶、胰蛋白酶组成的6 个复合酶中,筛选出制备优质小分子量菜籽肽的适宜复合酶。结果表明,木瓜蛋白酶与复合风味酶、胰蛋白酶与复合风味酶组成的两种复合酶均比较适合酶解此种菜籽粕蛋白,它们的酶解产物水解度和多肽得率较高,所含小分子量肽也较多。

关键词: 菜籽肽, 超声波, 分步酶解, 酶筛选

Abstract:

In this study, rapeseed meal protein prepared by reverse micelles extraction was sequentially hydrolyzed with two enzymes under ultrasonic assistance. Papain, protamex, alcalase, flavourzyme and trypsin were used to comprise 6 pairwise combinations for two-step hydrolysis of rapeseed meal protein. The hydrolysis efficacy of each combination was assessed using degree of hydrolysis (DH), trichloroacetic acid nitrogen-solution index (TCA-NSI), peptide yield and molecular weight distribution. The sequential hydrolysis with papain followed by flavourzyme or with trypsin followed by flavourzyme presented higher DH and peptide yield and the corresponding products both contained less small peptides.

Key words: rapeseed peptide, ultrasonic, stepwise enzymatic hydrolysis, enzyme screening

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