微囊藻毒素-RR的提取与生物降解  

Extraction and Biodegradation of Microcystin-RR(MC-RR)

作　　者：钱元健 

机构地区：[1]上海青草沙投资建设发展有限公司,上海201206

出　　处：《净水技术》2012年第4期27-30,143,共5页Water Purification Technology

摘　　要：对采集的微囊藻毒素-RR(microcystin-RR,MC-RR)提取并在其含量达到0.1 mg/g(湿重)的基础上,采用鞘氨醇单胞菌降解菌株对提取的MC-RR的生物降解进行了研究。结果表明在温度为30℃、pH=7.0并且有氧条件下,反应体系中初始浓度为42.3 mg/L的MC-RR在36 h内被完全降解。利用高效液相色谱(HPLC)分析发现,在MC-RR生物降解过程中相继出现两个降解产物,其中第一个降解产物的紫外扫描图谱与MC-RR相似度高达95%。Microcystin-RR （MC-RR） was extracted from cyanobacterial cells. Extracted MC-RR whose concentration reached 0.1 mg/g （wet） was biodegraded by Sphingopyxis sp. in the paper. The results show when temperature is 30℃ and pH is 7.0, 42.3 mg/L MC-RR can be biodegraded completely with aerobic condition in 36 h. It is found that there are two biodegradation productions by high performance liquid chromatography （HPLC）. UV spectrum similarity between one of the productions and MC-RR reaches 95%.

关 键 词：微囊藻毒素-RR 鞘氨醇单胞菌 生物降解 蓝藻水华 

分 类 号：X524[环境科学与工程—环境工程]