一株黄原胶降解菌的筛选与鉴定

A xanthan gum degradation bacterium identification

从土壤中分离出一株能够降解黄原胶的菌株,对这株黄原胶降解菌进行形态特征、生理生化特征及16SrDNA的序列分析,并利用系统发育分析等研究结果,确认该菌株属于芽胞杆菌科的芽胞杆菌属,为进一步开展菌株改良、定点诱变等提高菌株降解黄原胶能力的工作奠定基础.

A strains of bacterium that can degrade the xanthan gum has been isolated from soil. We analysed this xanthan-degrading bacterium in terms of the morphological characteristics, physiological and biochemical characteristics and 16S rDNA sequence. Combined with the strains of morphological characteristics, physiological and biochemical characteristics and system development analysis results, we confirmed the strains belonged to the genus Bacillus of Bacillaceae. This result layed a foundation to improve the ability of degradating strains xanthan gum for further development and the improvement of the strains of site-directed mutagenesis.