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Partial Characterization and Optimization of Lipase Production from Bacillus cereus Isolated from Haloalkaliphilic Lonar Lake

Tambekar D H, Mundekar S P, and Bombode V B
PG Dept. of Microbiology SGB Amravati University, Amravati
Abstract—In India the Lonar Crater Lake, popularly called as the Lonar Soda Lake is situated in the Buldhana District of the Maharashtra State, which is occupied by saline water and harbors various unidentified, unique haloalkaliphilic bacterial bacillus species which produces thermos- haloalkaliphilic enzyme. The present study deals with isolation, production and partial characterization of lipase producing bacterial culture isolated from the alkaline Lonar Lake. Total 28 bacterial cultures were isolated by using different enrichment media. Out of 28, 11 bacterial strains were selected on the basis of their lipolytic activity and then studied their phenotypic and biochemical characters. The strain OCW3(1) was selected for 16S rDNA sequencing and production, partial characterizations of lipase on the basis of their maximum lipolytic activity. Phylogenetic analysis based on 16S rDNA gene sequences indicated that strain OCW3(1) was affiliated to phylum Firmicutes with genera Bacillus. Newly isolated Bacillus cereus OCW3(1) strain was found to optimum production lipase at pH 9 and optimum temperature was found at 60°C. The best substrate concentration 2.33 unit/mL and enzyme concentration 4.66 unit/mL were observed. The abilities of Bacillus cereus OCW3 (1) to produce extracellular lipase suggest that they might be of potential valuable for biotechnological exploitation. 

Index Terms—lonar crater, haloalkaliphiles, bacillus, lipase

Cite: Tambekar D H, Mundekar S P, and Bombode V B, "Partial Characterization and Optimization of Lipase Production from Bacillus cereus Isolated from Haloalkaliphilic Lonar Lake," International Journal of Life Sciences Biotechnology and Pharma Research, Vol. 2, No. 3, pp. 249-256, July 2013.
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