食品科学 ›› 2010, Vol. 31 ›› Issue (9): 156-160.doi: 10.7506/spkx1002-6630-201009036

• 生物工程 • 上一篇    下一篇

根酶产凝乳酶的固态发酵条件优化

韩玲玲1,潘道东1,2,*   

  1. 1.南京师范大学 国家乳品加工技术研发分中心 2.宁波大学生命科学与生物工程学院
  • 收稿日期:2009-07-15 修回日期:2010-01-16 出版日期:2010-05-01 发布日期:2010-12-29
  • 通讯作者: 潘道东 E-mail:daodongpan@163.com
  • 基金资助:

    国家自然科学基金项目(30972130);“十一五”国家科技支撑计划项目(2006BAD04A12);
    国家“863”计划项目(2007AA10Z357)

Optimization of Solid-state Fermentation Condition for Chymosin Production by Rhizopus

HAN Ling-ling1, PAN Dao-dong1,2,*   

  1. 1. Branch Center of National Dairy Products Processing Technology Development, Nanjing Normal University, Nanjing 210097,
    China;2. College of Life Science and Biotechnology, Ningbo University, Ningbo 315211, China
  • Received:2009-07-15 Revised:2010-01-16 Online:2010-05-01 Published:2010-12-29
  • Contact: PAN Dao-dong E-mail:daodongpan@163.com

摘要:

对根霉产凝乳酶固体发酵条件进行研究。通过单因素分析和响应面试验设计,确定根霉产凝乳酶的发酵条件及发酵培养基的最佳组成为:24℃发酵7d;麸皮与江米质量比为0.96:1、培养基固液比(m/V)为0.99:1、奶粉添加质量分数为0.81%,所产的凝乳酶活力达到72.92SU/mL。

关键词: 根酶, 凝乳酶, 响应面法

Abstract:

In this study, the solid-state fermentation conditions for producing chymosin with Rhizopus were optimized through single factor experiments and response surface methodology. The optimal fermentation conditions were media with solid-liquid ratio of 0.99:1 (m/V), bran-rice ratio of 0.96:1 (m/m), milk powder addition amount of 0.81% (m/m) and fermentation at 24 ℃ for 7 days. The activity of chymosin produced at this optimal condition reached up to 72.92 SU/mL.

Key words: Rhizopus, chymosin, response surface methodology

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