Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (24): 107-115.doi: 10.11924/j.issn.1000-6850.casb20190700383

Previous Articles     Next Articles

Potential Saccharomyces cerevisiae Strains of Producing 2,3-butanediol: Screening

Ding Hao1,2(), Liu Wenjuan1,2, Sun Jian1,2, 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:2019-07-04 Revised:2019-07-29 Online:2020-08-25 Published:2020-08-20
  • Contact: Ge Jingping E-mail:760216740@qq.com;gejingping@126.com

Abstract:

The aims are to obtain the potentially high-production 2,3-butanediol Saccharomyces cerevisiae, and study the 2,3-butanediol producing potential of different strains. The most promising Saccharomyces cerevisiae strain W141 for producing 2,3-butanediol was screened by morphological observation, product tolerance detection, key enzyme activity assay, acetoin yield and fermentation test. The results showed that the W141 grew rapidly, could withstand 13% (w/v) ethanol and 0.8% (w/v) acetic acid, respectively, and had the high ethanol production (0.593 g/g) and carbon source utilization rate (the glucose consumption rate was 100% after fermentation for 24 h). The enzyme activities of key enzymes α-ALS and BDH were higher, 0.046 U/mg and 0.040 U/mg, respectively. The key intermediate of the 2,3-butanediol pathway, acetoin, had a high content, which reached 0.246 g/L. The study indicates that Saccharomyces cerevisiae W141 has certain transformation space and application prospect in the fermentation industry.

Key words: 2,3-butanediol, Saccharomyces cerevisiae, strain screening, fermentation, key enzyme activity, strain metabolite

CLC Number: