【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600 mg/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100 mg/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2 400 mg/L的苯酚中生长良好。更多还原

【Abstract】 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 600?mg/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 100?mg/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.更多还原