Position: Home > Articles > Identification of a strain of xanthan-degrading bacteria
Journal of Northwest A & F University(Natural Science Edition)
2006,34
(7)
81-86
1株黄原胶降解菌的鉴定
作 者：
刘晗;刘鹏;崔铁军;白雪芳;杜昱光
单 位：
中国科学院大连化学物理研究所;天津市出入境检验检疫局
关键词：
黄原胶降解菌;黄原胶酶;兼性厌氧;革兰氏阴性;鞘氨醇单胞菌
摘 要：
对从野外土壤中分离得到的1株可降解黄原胶的兼性厌氧菌进行了鉴定。结果表明,该菌株在幼龄时期为杆菌,大小约为(0.4~0.6)μm×(1.0~2.0)μm,呈直杆形或稍弯曲杆形,但在1周以上的培养物中,只存在大小约为0.5μm×0.5μm的类球状细胞;该菌为革兰氏阴性,兼性厌氧,无运动性,不形成芽孢,能利用多种糖类基质。初步鉴定该菌为鞘氨醇单胞菌(Sph ing om onas)。
译 名：
Identification of a strain of xanthan-degrading bacteria
作 者：
LIU Han~1,LIU Peng~2,CUI Tie-jun~2,BAI Xue-fang~1,DU Yu-guang~1 (1 Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,Liaoning 116023,China; 2 Tianjin Entry-exit Inspection and Quarantine Bureau,Tianjin 300456,China)
关键词：
xanthan-degrading bacteria;xanthase;facultative anaerobe;gramnegative;Sphingomonas
摘 要：
According to its morphology,cultural properties,physiological characteristics and 16S ribosomal RNA gene sequence,a strain of facultative anaerobe XT-11 for degrading xanthan which was screened from microorganism in the soil was analyzed.XT-11 was gram-negative,with the size of single rod cell of 0.4-0.6 μm×1.0-2.0 μm when it was young,with the size of round cell of 0.5 μm×0.5 μm after cultivating one week.It was of non-motil,non-sporeforming and could utilize many sugars.So,this strain was identified as Sphingomonas sp..
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