Optimization of medium and cultivation conditions for enhanced exopolysaccharide yield by marine Cyanothece sp. 113

作     者：苏传东 池振明 卢伟东 

作者机构：UNESCO Chinese Center of Marine Biotechnology Ocean University of China 

出 版 物：《Chinese Journal of Oceanology and Limnology》 (中国海洋湖沼学报（英文版）)

年 卷 期：2007年第25卷第4期

页      面：411-417页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the NSFC (No. 30328021) 

主　　题：Cyanothece exopolysaccharide N2 fixation photosynthesis marine cyanobacteria 

摘      要：Cyanothece sp. 113 is a unicellular, aerobic, diazotrophic and photosynthetic marine cyanobacterium. The optimal medium for exopolysaccharide yield by the strain was 70.0 g/L of NaCl, and 0.9 g/L of MgSO4 based on the modified F/2 medium for cultivation of marine algae. The optimal cultivation condition for exopolysaccharide yield by this cyanobacterial strain was 29℃, aeration, and continuous illumination at 86.0 μE/M^2/S. Under the optimal conditions, over 18.4 g/L of exopolysaccharide was produced within 12 days. This was so far the highest exopolysaccharide yield produced with strains of Cyanothece sp. obtained.