食品科学 ›› 2009, Vol. 30 ›› Issue (5): 145-148.doi: 10.7506/spkx1002-6630-200905033

• 生物工程 • 上一篇    下一篇

菜籽甾醇转化制备雄烯二酮高产菌株的诱变育种

杨 英1 , 2,姜绍通1,胡锦艳1,赵俊平1,梁铁艳1   

  1. 1.合肥工业大学生物与食品工程学院 2.安徽建筑工业学院环境工程系
  • 收稿日期:2008-04-15 修回日期:2008-07-08 出版日期:2009-03-01 发布日期:2010-12-29
  • 通讯作者: 杨英 E-mail:yangying-sunny@sohu.com
  • 基金资助:

    “十一五”国家科技攻关计划项目(2006BAD05A12);安徽省自然科学基金项目(070413165X)

Mutation Breeding of Strain Highly Producing Androst-4-ene-3,17-dione from Rapeseed Sterols

YANG Ying1,2,JIANG Shao-tong1, HU Jin-yan1, ZHAO Jun-ping1,LIANG Tie-yan1   

  1. (1. School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China;
    2. Department of Environment Engineering, Anhui Institute of Architecture, Hefei 230022, China)
  • Received:2008-04-15 Revised:2008-07-08 Online:2009-03-01 Published:2010-12-29
  • Contact: YANG Ying1,2 E-mail:yangying-sunny@sohu.com

摘要:

以分枝杆菌Mycobacterium sp. BD-696 为出发菌株,采用紫外、硫酸二乙酯复合诱变处理,筛选得到两株雄烯二酮高产突变株:Mycobacterium sp. BD-696-3 和Mycobacterium sp. BD-696-6,在底物甾醇添加量为6‰、摇瓶发酵168h 时的雄烯二酮产量分别为2.31g/L 和2.33g/L,得率分别为60.7% 和61.4%,较出发菌株提高了12.8%和13.5%。连续传代实验结果表明,突变株Mycobacterium sp. BD-696-6 的遗传性状稳定。

关键词: 菜籽甾醇, 分枝杆菌, 诱变育种, 雄烯二酮

Abstract:

The mutagenesis of Mycobacterium sp. BD-696 was induced by UV and DES, and two mutants Mycobacterium sp. BD-696-3 and Mycobacterium sp. BD-696-6 were obtained. When the concentration of substrate steroid is 6‰ and shaking flask fermentation is kept for 168 hours, the transformation yield of androst-4-ene-3,17-dione (AD) from rapeseed sterol by Mycobacterium sp.D-696-3 and Mycobacterium sp. BD-696-6 are 2.31 g/L and 2.33 g/L, respectively, and the corresponding transformation rates are 60.7 % and 61.4%, higher 12.8% and 13.5% than that by the original strain, respectively. Moreover, the continuous passage experiment showed that the mutant BD-696-6 has high genetic stability.

Key words: rapeseed sterols, Mycobacterium sp, mutation breeding, androst-4 -ene-3,17-dione

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