Abstract:

A bacterium B2 isolated from the Tianshan glacier of Xinjiang could produce blue pigments.According to 16S rDNA analysis, this isolate belonged to Duganella Genus .Two compounds were separated and purified from the cultivated Duganella B2 , named Blue-Ⅰand Blue-Ⅱ, respectively.From the spectra data of UV, MS and NMR of the compounds, Blue-Ⅰwas confirmed to be deoxyviolacein and Blue-Ⅱ was violacein.Blue-Ⅰand Blue-Ⅱ had the respective molecular weights of 327.2 and 343.2,and showed the characteristic absorption peaks at the respective 560 and 572 nm within the visible light range in ethanol solution.These results will be useful for developing the bioprocess for producing bacterial violacein.

摘要： 从杜檊氏B2菌体中提取蓝色色素，从中分离得到两中组分（Ⅰ、Ⅱ），经过高效液相色谱分离纯化，质谱以及核磁共振等分析，确定组分Ⅰ脱氧紫色杆菌素、组分Ⅱ为紫色杆菌素。本研究首次证明杜檊氏菌属也能合成紫色杆菌素。