天然产物研究与开发 ›› 2016, Vol. 28 ›› Issue (11): 1736-1740.doi: 10.16333/j.1001-6880.2016.11.009

• 研究简报 • 上一篇    下一篇

产胞外黑色素菌株的鉴定及发酵条件优化

张慧,马连杰,朱金山,余端,廖敦秀*   

  1. 重庆市农业科学院农业资源与环境研究所,重庆 401329
  • 出版日期:2016-11-30 发布日期:2017-03-30

Identification and Culture Condition Optimization for a Marine Extracellular Melanin Producing Bacterium

ZHANG Hui,MA Lian-jie,ZHU Jin-shan,YU Duan,LIAO Dun-xiu*   

  1. Institute of Agricultural Resources and Environment,Chongqing Academy of Agricultural Sciences,Chongqing 401329,China
  • Online:2016-11-30 Published:2017-03-30

摘要: 从重庆不同区域收集土壤,分离到一株高产黑色素的菌株(H4),通过16SrDNA序列测定,菌株与Streptomyces puniciscabiei序列相似性为99%,该菌产生的胞外黑色素在可见-紫外光区均有吸收,紫外区光吸收强,随着波长的减小,吸收增强,在210 nm左右有1个吸收高峰。采用响应面法对其发酵条件进行了优化,结果表明该菌株在L-酪氨酸的含量为0.73 g/L,pH值为6.05,温度28 ℃的条件下,菌株黑色素实际产量达2.49 g/L。

关键词: 黑色素, 链霉菌, 16SrDNA, 响应面法

Abstract: A high yield of melanin producing strain (H4) was isolated from soil collected from different regions of Chongqing,by 16SrDNA sequencing.The isolated strain showed 99% similarity with Streptomyces puniciscabiei. The melanin produced by strain H4 had a district absorption in UV light and as the wavelength decreased,the absorption increased.It has an absorption peak at around 210 nm.Response surface methodology was used to optimize its fermentation conditions,the results showed that the optimal fermentation conditions were as follows:the content of L-Tyrosine of 0.73 g/L,pH value of 6.05,at a temperature of 28 ℃.Under these conditions,the actual output of melanin reached 2.49 g/L.

Key words: melanin, Streptomyces, 16SrDNA, response surface methodology

中图分类号: 

Q939