title: Computation of interactive effects and optimization of process parameters for alkaline lipase production by mutant strain of Pseudomonas aeruginosa using response surface methodology.
abstract: Alkaline lipase production by mutant strain of Pseudomonas aeruginosa MTCC 10,055 was optimized in shake flask batch fermentation using response surface methodology. An empirical model was developed through Box-Behnken experimental design to describe the relationship among tested variables (pH, temperature, castor oil, starch and triton-X-100). The second-order quadratic model determined the optimum conditions as castor oil, 1.77 mL.L(-1); starch, 15.0 g.L(-1); triton-X-100, 0.93 mL.L(-1); incubation temperature, 34.12 °C and pH 8.1 resulting into maximum alkaline lipase production (3142.57 U.mL(-1)). The quadratic model was in satisfactory adjustment with the experimental data as evidenced by a high coefficient of determination (R(2)) value (0.9987). The RSM facilitated the analysis and interpretation of experimental data to ascertain the optimum conditions of the variables for the process and recognized the contribution of individual variables to assess the response under optimal conditions. Hence Box-Behnken approach could fruitfully be applied for process optimization.
authors.affiliation: Center of Excellence, Department of Microbiology, Dr. Ram Manohar Lohia Avadh University, Faizabad, UP, India.
authors.forename: Deepali
authors.initials: D
authors.lastname: Bisht
authors.forename: Santosh Kumar
authors.initials: SK
authors.lastname: Yadav
authors.forename: Nandan Singh
authors.initials: NS
authors.lastname: Darmwal
keywords: Box-Behnken design; Pseudomonas aeruginosa; alkaline lipase; response surface methodology