摘要
从长江水体中分离到一株最优功能菌株JD1，经初步鉴定该菌株为琼氏不动杆菌属（acinetobacter junii）。该菌株最高可耐受质量浓度600mg／L的乐果，降解乐果的最适温度为32℃，在30～37℃的广泛温度下仍生长良好，最适pH值为7．2左右，具有广泛的pH值生长范围（pH=5．5～9．0）。研究发现，装液量、接种量对菌株的降解有明显影响。装液量由3／10调整为1／5时，JD1对质量浓度100mg／L的乐果降解率从21％提高到51．54％。试验表明，该菌株可以在质量浓度高达2400mg／L的苯酚中生长良好。
A strain, JD1, a predominant bacterium, was isolated from Yangtse River. The preliminary identifications suggested that the strain belongs to Acinetobacter junii. The strain could resist to dimethoate up to 600mg/L. The optimal conditions for degradation of dimethoate was pH 7.2 and temperature 32℃, and JD1 can degrade dimethoate under the condition of pH 5.5-9.0 and temperature 30-37℃. The changes of the liquid quantity and the quantum of inoculation could obviously impact the degradation rate. Changing the liquid quantity from 3/10 to 1/5, the degradation rate for dimethoate of 100mg/L changed from 21% to 51.54%. The experiments also proved that the strain JD1 could resist to phenol up to 2 400 mg/L.
出处
《水资源保护》
CAS
北大核心
2008年第1期59-62,共4页
Water Resources Protection
基金
国家"863"计划资助项目(2003AA601100)
关键词
优势菌
乐果
生物降解
琼氏不动杆菌属
predominant bacteria
dimethoate
biodegradation
Acinetobacter junii
