食品科学 ›› 2010, Vol. 31 ›› Issue (1): 145-148.doi: 10.7506/spkx1002-6630-201001034

• 生物工程 • 上一篇    下一篇

双酶法制备玉米肽酶解条件研究

李艳丽1,丛建民2,陈光1   

  1. 1.吉林农业大学生命科学学院 2.白城师范学院生物系
  • 收稿日期:2009-03-25 出版日期:2010-01-01 发布日期:2014-05-19
  • 通讯作者: 陈光 E-mail:chg61@163.com
  • 基金资助:

    吉林省科技厅资助项目(20020211)

Double Enzyme Hydrolysis for Preparation of Corn Peptides

LI Yan-li1,CONG Jian-min2,CHEN Guang1,*   

  1. (1. College of Life Science, Jilin Agricultural University, Changchun 130118, China;
    2. Department of Biology, Baicheng Normal College, Baicheng 137000, China
  • Received:2009-03-25 Online:2010-01-01 Published:2014-05-19
  • Contact: CHEN Guang1,* E-mail:chg61@163.com

摘要:

利用双酶法水解玉米蛋白粉制备玉米肽,探讨各因素对水解度(DH)的影响,旨在确定玉米肽制备的最佳酶解条件。结果表明:最佳酶解条件为温度55℃、底物质量浓度5g/100mL、pH8.5,按4% 的酶与底物比加碱性蛋白酶水解1.5h 后,调整pH 值至7.5,之后再按3.5% 的酶与底物比加木瓜蛋白酶水解1.5h。在此条件下,水解液中DH 为80.97%。与单酶法相比,DH 明显提高。

关键词: 碱性蛋白酶, 木瓜蛋白酶, 双酶法, 玉米肽, 水解条件

Abstract:

Double enzyme hydrolysis was used to prepare peptides from corn gluten meal. In order to maximize degree of hydrolysis (DH), crucial hydrolysis parameters were optimized. Results showed that a maximum DH of 80.97% was obtained by optimized sequential hydrolysis for 1.5 h using protease alkaline at 55 ℃ and pH 8.5 with 5 g/100mL substrate concentration and 4% enzyme dose followed by 1.5 h using papain at pH 7.5 with 3.5% enzyme dose, which was significantly higher that obtained by single enzyme hydrolysis.

Key words: alkaline protease, papain, double enzyme hydrolysis, corn peptides, hydrolysis conditions

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