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Pakistan Journal of Biological Sciences
Year: 2002  |  Volume: 5  |  Issue: 6  |  Page No.: 699 - 703

Growth Response of a Selected Bacterial Population (Pseudomonas) Exposed to Malathion

Hashmi Imran, Khan M. Altaf and Jong-Guk Kim    

Abstract: Growth kinetics of Pseudomonas in sterile nutrient broth was studied using nutrient broth alone and broth supplemented with malathion (8.55 mg/ml malathion). The percent biodegradation of malathion by Pseudomonas was determined under sterile and unsterile conditions. The mean percentage biodegradation of malathion under unsterile conditions varied from 88.57 per cent for 0.00285 μg/ml, 70.49 percent for 0.0057 μg/ml and 78.52 for 0.00855 μg/ml whereas in sterile conditions the fate of microorganisms capable of biodegrading malathion showed the following percentage mean values which varied from 53.26 percent for 0.00285 μg/ml, 53.95 percent for 0.0057 μg/ml and 80.61 percent for 0.00855 μg/ml. The study determined that inoculation of bacterial culture under laboratory scale conditions can be used in bioremediation of environmental pollution caused by xenobiotics.

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