红球菌Chr-9降解吡啶和苯酚的特性  

Degradation Characteristics of Pyridine and Phenol by Rhodococcus sp. Chr-9

作　　者：孙纪全[1,2,3] 徐莲[1,2] 汤岳琴[2] 吴晓磊[2] 陈福明[1] 

机构地区：[1]深圳清华大学研究院新能源与环保技术研究所、深圳市工业应用分离技术重点实验室,深圳518057 [2]北京大学工学院,北京100871 [3]清华大学化工系,北京100084

出　　处：《应用与环境生物学报》2012年第4期647-650,共4页Chinese Journal of Applied and Environmental Biology

基　　金：国家“973”项目子课题(No.2007CB815601);深圳基础研究计划项目(No.JC200903170472A)资助~~

摘　　要：研究了红球菌(Rhodococcus)Chr-9菌株在基础盐培养基中降解吡啶和苯酚的特性,分析了菌株降解苯酚和吡啶间的差异.结果表明,菌株Chr-9能够在72 h内将基础盐培养基中的吡啶(200 mg L-1)和苯酚(200 mg L-1)完全降解,同时利用吡啶和苯酚进行生长.菌株降解吡啶的最适温度为35℃,最适pH为8.0.菌株降解吡啶和苯酚的速度与底物的初始浓度呈负相关;在无其它氮源的基础盐培养基中,菌株能够利用吡啶和苯酚协同生长.The degradation characteristics of pyridine and phenol by Rhodococcus sp. Chr-9 were studied. The results showed that strain Chr-9 could completely degrade 200 mg L-1 of pyridine or phenol respectively supplemented as sole carbon source within 72 hours in mineral salt medium. The optimal pH and temperature for pyridine degradation by strain Chr-9 were 8.0 and 35 ℃, respectively. The degradation rate of pyridine or phenol by strain Chr-9 was negatively related with its initial concentration in mineral salt medium. Strain Chr-9 could utilize pyridine as sole carbon and nitrogen source for growth, and the supplementation of phenol could enhance the strain growth when there was no other nitrogen source except pyridine in mineral salt media. Fig 7, Ref 12

关 键 词：红球菌 吡啶 苯酚 生物降解 协同降解 

分 类 号：X172[环境科学与工程—环境科学]