The Potentiality of Lysinibacillus sphaericus DM-3 and Bacillus cereus DM-5 in Degrading Dimethoate

摘要: TWO BACTERIAL strains were isolated by soil enrichment technique and identified as Lysinibacillus sphaericus DM-3 Bacillus cereus DM-5. Biodegradation experiments performed in carbon free-mineral salt media supplemented with 100 mg/L of dimethoate. The ability bacterial to degrade the dimethoate was evaluated under various conditions such pH range, temperature different concentrations residue determined quantitatively HPLC method degradation byproducts GC/MS technique. results revealed that both can utilize a sole source up concentration 500 mg/L. optimum for 28°C. L. B. DM-5 showed maximum growth presence at 6.0 7.0, respectively. could 24% within 72 h, whereas percentage using 17% after same incubation period. main from namely O,O,S-trimethyl phosphorothioate. This study reports first time efficient dimethoate, mg/L, over wide range pH.