›› 2015, Vol. 42 ›› Issue (2): 414-419.doi: 10.16431/j.cnki.1671-7236.2015.02.028

• 生理生化 • 上一篇    下一篇

高产蛋白酶枯草芽孢杆菌JNB001产酶条件的优化

竺礼斌1, 曲道峰1, 施春伟1, 韩剑众1, 余全法2, 吴劲松3   

  1. 1. 浙江工商大学食品质量与安全系, 浙江省食品安全重点实验室, 杭州 310018;
    2. 宁波市畜牧兽医局, 宁波 315012;
    3. 宁波市逸然畜牧有限公司, 宁波 315466
  • 收稿日期:2014-07-15 出版日期:2015-02-20 发布日期:2015-02-13
  • 通讯作者: 韩剑众 E-mail:hanjz99@zjgsu.edu.cn
  • 作者简介:竺礼斌(1990-),男,浙江宁波人,硕士,研究方向:食品质量与安全,E-mail:qqmgsdspxy@163.com
  • 基金资助:
    宁波市科技计划重大专项(2013C11033)

Optimization of Fermentation Conditions on the Protease-producing Bacillus subtilis JNB001

ZHU Li-bin1, QU Dao-feng1, SHI Chun-wei1, HAN Jian-zhong1, YU Quan-fa2, WU Jin-song3   

  1. 1. Key Laboratory of Food Safety of Zhejiang, Department of Food Quality and Safety, Zhejiang Gongshang University, Hangzhou 310018, China;
    2. Ningbo Animal Husbandry and Veterinary Bureau, Ningbo 315012, China;
    3. Ningbo Yiran Animal Husbandry Co., Ltd., Ningbo 315466, China
  • Received:2014-07-15 Online:2015-02-20 Published:2015-02-13

摘要: 为了进一步提高枯草芽孢杆菌JNB001产蛋白酶的能力,试验利用单因素及正交试验从起始pH、发酵温度、接种量、装液量、菌龄等方面对产酶条件进行优化。结果表明,最佳培养条件为:起始pH 7.0;发酵温度35 ℃;接种量7%;装液量35 mL/250 mL;菌龄18 h;发酵时间36 h。菌株JNB001经优化发酵条件后,测定其蛋白酶活力可高达371.66 U/mL。该试验结果为无害化生物处理罐的优化设计等后续应用研究奠定了基础。

关键词: 枯草芽孢杆菌; 蛋白酶; 发酵条件; 优化

Abstract: This research was aimed to further improve the ability of protease produced by Bacillus subtilis JNB001.By series single factor and orthogonal analysis to optimize the enzyme-producing conditions from initial pH,fermentation temperature,inoculation volume,bottling volume and cell age,etc.The results showed that the optimum conditions were:Initial pH 7.0,inoculation volume of 7%,bottling volume of 35 mL in the 250 mL flask,cell age was 18 h,and cultured for 36 h at 35 ℃.Cultivated at these conditions,the protease activity of the strain JNB001 could reach to 371.66 U/mL.These consequences laid the foundation for the subsequent applications such as the design of harmless biological treatment tank,etc.

Key words: Bacillus subtilis; protease; fermentation conditions; optimization

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