Optimization of culture conditions by response surface methodology and unstructured kinetic modeling for bioactive metabolite production by Nocardiopsis litoralis VSM-8.
Response surface methodology-based central composite design on five variables incubation time, pH, temperature, sucrose concentration, and soya peptone concentration was employed for optimization of the production of bioactive compounds by Nocardiopsis litoralis strain VSM 8. The main quadratic effects and interactions of the five variables on the production of bioactive metabolites were investigated. A second-order polynomial model produced a satisfied fit for experimental data with regard to the production of the bioactive metabolites. Regression analysis showed that high R2values of all the five responses are significant and adjusted R2values showed good agreement with the experimental and predicted values. The present model was used to evaluate the direct interaction and quadratic effects to optimize the physico-chemical parameters for the production of bioactive metabolites that inhibit the pathogenic microorganisms measured in terms of zones of inhibition (responses). Mathematical kinetic model development and estimation of kinetic parameters also showed good approximation in terms of model fitting and regression analysis.
Department of Botany and Microbiology, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, 52510, Andhra Pradesh, India.
Ushakiranmayi
U
Managamuri
Department of Botany and Microbiology, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, 52510, Andhra Pradesh, India. profmvl08@gmail.com.
Muvva
M
Vijayalakshmi
Department of Biotechnology, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, 52510, Andhra Pradesh, India.
Sudhakar
S
Poda
Department of Biotechnology, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, 52510, Andhra Pradesh, India.|Department of Biotechnology, K L University, Vaddeswaram, Guntur, Andhra Pradesh, India.
V S Rama Krishna
VS
Ganduri
Department of Biotechnology, National Institute of Technology, Warangal, Telangana, India.
R Satish
RS
Babu
Bioactive metabolites; CCD; Kinetic modeling; Optimization; RSM