Biodegradation of quinalphos by gram negative bacteria Pantoea agglomerans and Acinetobacter sp. dcm5A

Five bacterial strains for biodegradation study were initially isolated from quinalphos exposed soil cotton field of Indian Agricultural Research Institute, India by Serial dilution and enrichment technique. Amongst them, two Pantoea agglomerans Acinetobacter sp. dcm5A to different concentrations (50-250 ppm, parts per million) evaluate their tolerance the optimum concentration supported growth. Growth kinetics isolates was studied means optical density culture media (150 rpm, rotation minute) at 30oC 15 days. The optimal growth 100 while 200 ppm. Bacterial degraded 60% 79.7% respectively in 7 days incubation 100% degradation both observed after 13 incubation.