生物技术通报 ›› 2015, Vol. 31 ›› Issue (3): 127-134.doi: 10.13560/j.cnki.biotech.bull.1985.2015.04.018

• 研究报告 • 上一篇    下一篇

一株丁二酸高产菌株的筛选与选育

王乐, 宇光海, 杨硕晔, 王为为, 惠明   

  1. (河南工业大学生物工程学院,郑州 450001)
  • 收稿日期:2014-08-04 出版日期:2015-03-16 发布日期:2015-03-16
  • 作者简介:王乐,男,博士,讲师,研究方向:微生物学,发酵工程;E-mail:wanglely1984@163.com
  • 基金资助:
    国家自然科学基金项目(21306040)

Screening and Breeding of a Strain for High Yield of Succinic Acid

Wang Le Yu Guanghai Yang Shuoye Wang Weiwei Hui Ming   

  1. (College of Biological Engineering,Henan University of Technology,Zhengzhou 450001)
  • Received:2014-08-04 Published:2015-03-16 Online:2015-03-16

摘要: 旨在提高丁二酸发酵生产水平,通过初筛、复筛从土壤中分离得到了高产丁二酸菌株,发酵结束后利用高效液相色谱法检测丁二酸的产率为34.45%。对菌株进行紫外诱变选育,结果表明,在底物葡萄糖的浓度为100 g/L时,丁二酸的产率提高了46%,达到了50.30%,残糖低于10 g/L。经形态学特征、生理生化指标测定以及16S rDNA序列分析等,鉴定该菌株为放线杆菌。

关键词: 丁二酸, 高产菌株, 筛选, 诱变, 放线杆菌

Abstract: It was to improve the production of succinic acid. After the primary and secondary screening, a strain with high-yield of succinic acid was isolated from the soil. The succinic acid production of 34.45% was determined by the high performance liquid chromatography(HPLC)after the fermentation. Later, the UV mutagenic breeding of strains has been performed, resulting in the succinic acid production of 50.30% which increased by 46% in the substrate of glucose concentration of 100 g/L with the residual sugar lower than 10 g/L. After the determinations of morphological characteristics, physiological and biochemical index and 16S rDNA sequence analysis, the strain was identified as actinobacillus.

Key words: succinic acid, high-producing strain, screen, mutagenesis, Actinobacillus