吉首大学学报(自然科学版)

• 生物与化学 • 上一篇    下一篇

一株高产丁二酮菌株的筛选与鉴定

粟桂蓉,周璐璐,易浪波,彭清静,彭清忠   

  1. (吉首大学生物资源与环境科学学院,湖南 吉首 416000)
  • 出版日期:2016-03-25 发布日期:2016-05-11
  • 通讯作者: 彭清忠(1970—),男,湖南慈利人,吉首大学生物资源与环境科学学院教授,博士,硕士生导师,主要从事微生物资源开发与应用研究.
  • 作者简介:粟桂蓉(1990—),女,湖南邵阳人,吉首大学生物资源与环境科学学院硕士研究生,主要从事微生物资源与生态研究
  • 基金资助:

    国家自然科学基金资助项目(31260003);吉首大学研究生科研创新项目(14JDY036)

Screening and Identification of High Butanedione-Yielding Bacterial Strain

SU Guirong,ZHOU Lulu,YI Langbo,PENG Qingjing,PENG Qingzhong   

  1. (College of Biology and Environmental Science,Jishou University,Jishou 416000,Hunan China)
  • Online:2016-03-25 Published:2016-05-11

摘要:

以湖南省湘西地区土家腊肉中分离的41株细菌为出发菌,采用平板显色法和邻苯二胺比色法筛选高产丁二酮的微生物菌种.通过菌落形态观察、生理生化特征测定和基于16S rRNA基因序列分析,对分离菌株进行鉴定.结果表明,7株细菌能产生较高含量的丁二酮,其中菌株BCL-8产丁二酮量最高,在葡萄糖蛋白胨水培养基中发酵20 h,丁二酮质量浓度达68.9 mg/L,该菌经鉴定为地衣芽孢杆菌(Bacillus licheniformis).菌株BCL-8是一株优良的产丁二酮的微生物种质资源.

关键词: 丁二酮, 地衣芽孢杆菌, 筛选, 鉴定

Abstract:

To obtain the high butanedione-yielding bacterial strain,41 strains of bacteria isolated from traditional Tujia bacon were screened by way of V-P color reaction and 1,2-diaminobenzene colorimetric method.The isolated strains were identified by bacterial morphological,physiological and biochemical characteristics,and phylogenetic relationships based on 16S rRNA gene sequences.It was found that 7 strains of bacteria could produce higher content of butanedione,of which strain BCL-8 had the highest yield of butanedione.When strain BCL-8 had been fermented in glucose and peptone medium for 20 hours,butanedione content in fermentation liquor was determined to be 68.9 mg/L.Strain BCL-8 was identified as Bacillus licheniformis based on its morphological,physiological and biochemical characteristics,and 16S rRNA gene sequences analysis.The results showed that strain BCL-8 is a superior butanedione-producing microorganism.

Key words: butanedione, Bacillus licheniformis, screening, identification

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