title: Concurrent production of cellulase and xylanase from Trichoderma reesei NCIM 1186: enhancement of production by desirability-based multi-objective method.
abstract: Application of multiple response optimizations using desirability function in the production of microbial metabolites improves economy and efficiency. Concurrent production of cellulase and xylanase in Trichoderma reesei NCIM 1186 using an agricultural weed, Prosopis juliflora pods, was studied. The main aim of the study was to optimize significant medium nutrient parameters for maximization of cellulase and xylanase by multi-objective optimization strategy using biomass. Process parameters such as the nutrient concentrations (pods, sucrose, and yeast extract) and pH were investigated to improve cellulase and xylanase activities by one factor at a time approach, single response optimization and multi-objective optimization. At the corresponding optimized process parameters in single response optimization, the maximum cellulase activity observed was 3055.65 U/L where xylanase highest activity was 422.16 U/L. Similarly, the maximum xylanase activity, 444.94 U/L, was observed with the highest cellulase activity of 2804.40 U/L. The multi-objective optimization finds a tradeoff between the two objectives and optimal activity values in between the single-objective optima were achieved, 3033.74 and 439.13 U/L for cellulase and xylanase, respectively.
authors.affiliation: Bioprospecting Laboratory, Department of Biotechnology, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, 613401, India.
authors.forename: Preethi
authors.initials: P
authors.lastname: Jampala
authors.affiliation: Andaman and Nicobar Centre for Ocean Science and Technology, ESSO-National Institute of Ocean Technology, Port Blair, 744103, India.
authors.forename: Satish
authors.initials: S
authors.lastname: Tadikamalla
authors.affiliation: Bioprospecting Laboratory, Department of Biotechnology, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, 613401, India.
authors.forename: M
authors.initials: M
authors.lastname: Preethi
authors.affiliation: Bioprospecting Laboratory, Department of Biotechnology, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, 613401, India.
authors.forename: Swathy
authors.initials: S
authors.lastname: Ramanujam
authors.affiliation: Bioprospecting Laboratory, Department of Biotechnology, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, 613401, India. kinnubio@gmail.com.
authors.forename: Kiran Babu
authors.identifier: http://orcid.org/0000-0002-9627-0595
authors.initials: KB
authors.lastname: Uppuluri
keywords: Cellulase; Multi-objective optimization; Prosopis juliflora; Trichoderma reesei; Xylanase