SDBS降解菌的筛选及其降解特性研究

为筛选纯化和研究SDBS降解菌的生物学及降解特性,通过富集、分离与纯化,从长期受洗涤剂、除草剂和有机磷污染的土壤中,分离出4株能以十二烷基苯磺酸钠(SDBS)为唯一碳源的细菌,这4株菌分别为2-1,2-2,C-1和X-4.在选定的最适条件下,测定了4株菌对SDBS的降解能力.SDBS质量浓度达500 mg/L时,菌株2-1仍能很好地生长且继续进行降解,SDBS的降解率达到了94.78%;菌株2-2的降解率为91.09%.

Study on Isolation and Characterization of Sodium Dodecyl Benzene Sulfonate Degrading Bacterial Strains

To screen,purify and study biological and degradative characteristics of sodium dodecyl benzene sulfonat(SDBS) bacterium,the four bacteria were isolated from the soil long-term polluted by detergents,herbicides and organic phosphorus by means of enriching,separating and purifying,which lived on SDBS as their sole carbon source.The four strains were 2-1,2-2,C-1,X-4.On the optimum culture conditions their degrading capacities on SDBS were investigated.The degradation efficiencies of the strain 2-1 and 2-2 for SDBS were respectively 94.78% and 91.09% and the strain 2-1 could still grow well and continuously degrade SDBS in the liquid medium containing 500 mg/L of SDBS.