食品科学 ›› 2013, Vol. 34 ›› Issue (7): 185-189.doi: 10.7506/spkx1002-6630-201307039

• 生物工程 • 上一篇    下一篇

一株解淀粉芽孢杆菌产糖条件的优化

李彦岩,张 彩,范 熠,刘丽莎*,李平兰,韩玉竹   

  1. 中国农业大学食品科学与营养工程学院,北京 100083
  • 收稿日期:2012-08-25 修回日期:2013-02-24 出版日期:2013-04-15 发布日期:2013-03-20
  • 通讯作者: 刘丽莎 E-mail:liulisha0616@sina.com
  • 基金资助:
    全国大学生创新创业项目(201210019088);北京市自然科学基金项目(5122018)

Optimization of Fermentation Conditions for Exopolysaccharide Production by Bacillus amyloliquefaciens LPL061

LI Yan-yan,ZHANG Cai,FAN Yi,LIU Li-sha*,LI Ping-lan,HAN Yu-zhu   

  1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
  • Received:2012-08-25 Revised:2013-02-24 Online:2013-04-15 Published:2013-03-20
  • Contact: LIU Li-sha E-mail:liulisha0616@sina.com

摘要: 为提高一株解淀粉芽孢杆菌LPL061胞外多糖(EPS)产量,采用单因素试验和响应面法,对该菌株的最适培养基成分和发酵条件进行优化。优化后培养基配方为:蔗糖22g/L、酵母膏18.4g/L、pH 7.0;发酵条件为:温度28℃、转速220r/min、接种量3%、发酵时间24h。优化后胞外多糖产量达4.46g/L,比优化前提高了1.51倍。

关键词: 解淀粉芽孢杆菌, 胞外多糖, 条件优化, 响应面分析法

Abstract: In order to improve expolysaccharide (EPS) production by Bacillus amyloliquefaciens LPL061, the medium and fermentation conditions were optimized by one-factor-at-a-time design and response surface analysis. The optimal culture medium consisted of 22 g/L sucrose and 18.4 g/L yeast extract at pH 7.0. The optimal fermentation conditions were 28 ℃, 220 r/min shaking speed, 3% inoculum size and 24 h. Under these conditions, the EPS yield was 4.46 g/L, 1.51-fold higher than before the optimization.

Key words: Bacillus amyloliquefaciens, exopolysaccharide, fermentation condition optimization, response surface analysis

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