NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2018, Vol. 30 ›› Issue (10): 1743-1746. doi: 10.16333/j.1001-6880.2018.10.014

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Isolation and Identification of A Bacterial Strain Producing Red Pigment and Research on the Pigment Properties

MA Lian-Jie,ZHANG Hui,HANG Xiao-ning,HU Liu-jie,YU Duan,LIAO Dun-xiu*   

  1. Institute of Agricultural Resources and Environment,Chongqing Academy of Agricultural Sciences,Chongqing 401329,China
  • Online:2018-10-31 Published:2018-11-01

Abstract: In this study,a bacterium producing red pigment was isolated from the paddy field in Dianjiang,Chongqing.It was determined as Serratia marcescens by morphology and 16S rRNA sequencing.The red pigment had maximum UV absorption peak at 541 nm,indicating that this pigment is probably a kind of prodigiosin derivatives.Results of the studies on the stability of the red pigment showed that it was stable in pH 6-11,strong resistance to oxidation,low stability over UV light,precipitate with reductant.Moreover,results indicated the red pigment produced different degree of desaturation with metal cations,being most obvious with Cu2+,and produced precipitate with SO42-..

Key words: prodigiosin, pigment, Serratia marcescens, 16S rRNA  

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