两株琼胶酶高产细菌的筛选和鉴定  

Isolation and Identification of two Agarase-Producing Marine Bacteria

作　　者：刘江涛[1] 蔡俊鹏[1] 吴冰[2] 

机构地区：[1]华南理工大学食品与生物工程学院,广东广州510640 [2]华南理工大学测试中心,广东广州510640

出　　处：《现代食品科技》2005年第1期43-45,共3页Modern Food Science and Technology

摘　　要：琼胶酶能降解琼胶多糖,生成琼胶寡糖。这些降解产物在食品等方面有良好的应用价值。本研究从江蓠中分离筛选到两株琼胶酶高产菌,编号分别是2.1-f和1.1-e,它们均为革兰氏阴性菌,呈细杆状。通过API条带分析,它们除了在对柠檬酸盐的利用上存在差别外,其它的生理生化特征完全相同,最终确定它们均为Sphingobacterium multivorum(多食鞘氨醇杆菌),其可信度分别是98.7%和99.5%。Agarase can hydrolyse agar, producing agaro-oligosaccharides. These hydrolysing products have shown certain application values in food industry and other sectors. In this study, two powerful agarase-producing marine bacteria were isolated from Gracilaria species, designated as strains 2.1-f and 1.1-e. Microbiological studies showed that they are all Gram negative, rod-shape. By means of API analysis, they were identified as Sphingobacterium multivorum despite some tiny variations between them.

关 键 词：琼胶酶 高产菌株 筛选 革兰氏阴性菌 

分 类 号：Q939.97[生物学—微生物学]