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中国农学通报 ›› 2020, Vol. 36 ›› Issue (23): 19-25.doi: 10.11924/j.issn.1000-6850.casb20190500192

所属专题: 生物技术

• 生物科学 • 上一篇    下一篇

外源添加乙偶姻对酿酒酵母W5/W141产2,3-丁二醇的影响

杨智宇1,2(), 佟天奇1,2, 刘磊1,2, 平文祥1,2, 葛菁萍1,2()   

  1. 1微生物黑龙江省高校重点实验室/黑龙江大学生命科学学院,哈尔滨 150080
    2黑龙江大学农业微生物技术教育部工程研究中心,哈尔滨 150500
  • 收稿日期:2019-05-24 修回日期:2019-07-25 出版日期:2020-08-15 发布日期:2020-08-13
  • 通讯作者: 葛菁萍
  • 作者简介:杨智宇,男,1994年出生,黑龙江齐齐哈尔人,硕士研究生,研究方向:生物学。通信地址:150080 黑龙江省哈尔滨市南岗区学府路74号,Tel:0451-86609016,E-mail: yangzhiyu0606@163.com
  • 基金资助:
    国家自然科学基金“从2,3-丁二醇代谢角度构建工程微生物群体及其生态学机制研究”(31570492);黑龙江省教育厅重点项目“利用肺炎克雷伯氏菌发酵生产2,3-丁二醇及机理探讨”(HDJCCX-2016Z05)

Effects of Acetoin Addition on 2,3-butanediol Production by Saccharomyces cerevisiae W5/W141

Yang Zhiyu1,2(), Tong Tianqi1,2, Liu Lei1,2, Ping Wenxiang1,2, Ge Jingping1,2()   

  1. 1Key Laboratory of Microbiology of Heilongjiang Province, Life Science College, Heilongjiang University, Harbin 150080
    2Agricultural Microorganisms Technology Education Engineering Research Center, Harbin 150500
  • Received:2019-05-24 Revised:2019-07-25 Online:2020-08-15 Published:2020-08-13
  • Contact: Ge Jingping

摘要:

本研究旨在获得一株性能良好的2,3-丁二醇(2,3-BD)生产菌株。向酿酒酵母(Saccharomyces cerevisiae) W5/W141两株产2,3-BD菌株中添加不同浓度乙偶姻,并测定2,3-BD、乙醇和甘油产量随发酵时间的变化情况。S. cerevisiae W5最适乙偶姻添加浓度为12 g/L,且2,3-BD的产量在72 h达到最大,产量为2.54±0.03 g/L,甘油和乙醇转化率分别较未添加时下降了17.6%和23.6%。S. cerevisiae W141最适乙偶姻添加浓度为10 g/L,且2,3-BD的产量在72 h达到最大,产量为1.71±0.02 g/L,甘油和乙醇转化率分别较未添加时下降了57.1%和16.7%。通过对比,本课题最终选用S. cerevisiae W5作为最适菌株,为微生物发酵法生产2,3-BD提供新的资源。

关键词: 2,3-丁二醇, 酿酒酵母, 乙偶姻, 乙醇, 甘油

Abstract:

To obtain a 2,3-butanediol (2,3-BD) producing strain with good performance, different concentrations of acetoin were added into two strains of Saccharomyces cerevisiae (W5/W141) producing 2,3-BD, and the changes of 2,3-BD, ethanol and glycerol production with fermentation time were determined. The optimum acetoin concentration of S. cerevisiae W5 was 12 g/L, and the concentration of 2,3-BD reached the maximum at 72 h, it was 2.54±0.03 g/L, and the conversion of glycerol and ethanol decreased by 17.6% and 23.6% respectively compared with that without addition. The optimum acetoin concentration of S. cerevisiae W 141 was 10 g/L, and the concentration of 2,3-BD reached the maximum at 72 h, it was 1.71±0.02 g/L, and the conversion of glycerol and ethanol decreased by 57.1% and 16.7% respectively. By comparison, S. cerevisiae W5 was selected as the optimum strain to provide new resources for the production of 2,3-BD by microbial fermentation.

Key words: 2,3-butanediol, Saccharomyces cerevisiae, acetoin, ethanol, glycerol

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