聚谷氨酸的微生物法制备及其水凝胶应用简介  

Study on Poly(Glutaic Acid) Production and Its Hydrogel Properties by Microbial Fermentation

作　　者：刘静[1] 金映虹[1] 张斌[1] 杨超[1] 曾猛[1] 郑承刚[1] 宋存江[1] 

机构地区：[1]南开大学生命科学学院

出　　处：《食品与发酵工业》2005年第8期45-47,共3页Food and Fermentation Industries

摘　　要：研究中分离得到1株产聚谷氨酸(PGA)的芽孢杆菌,对菌种进行了分类鉴定,包括生理生化实验、Bi-olog-System4.20和16S rRNA基因序列分析,将其命名为Bacillus licheniformisNK-03。对该菌产聚谷氨酸的发酵条件进行了优化,发酵合成PGA的产率为11g/L。PGA溶液经60Co-γ射线照射后形成的水凝胶有很强的吸水性,可吸收2000倍以上体积的水分。A strain which can produce poly （glutamic acid） （PGA） was selected and was named Bacillus licheniforrnis NK-03 by 16S rRNA gene sequence homologous analysis, the BIOLOG microbial taxonomic identification system and traditional physiology biochemistry experiment. By using the bacteria the author investigated the production of PGA. The yield of PGA reached approximately 1 lg/L. Crosslinked PGA hydrogels were prepared by ^60Co-γ irradiation yields high water sorption materials absorbing specific water content about 2000 times of their dry volume.

关 键 词：聚谷氨酸(PGA) BACILLUS LICHENIFORMIS NK-03 水凝胶 聚谷氨酸 微生物法 BACILLUS 简介 应用 制备 

分 类 号：TQ922.1[轻工技术与工程—发酵工程] O648.17[理学—物理化学]