title: Application of Asymetrical and Hoke Designs for Optimization of Laccase Production by the White-Rot Fungus Fomes fomentarius in Solid-State Fermentation.
abstract: Statistical approaches were employed for the optimization of different cultural parameters for the production of laccase by the white rot fungus Fomes fomentarius MUCL 35117 in wheat bran-based solid medium. first, screening of production parameters was performed using an asymmetrical design 2(5)3(3)//16, and the variables with statistically significant effects on laccase production were identified. Second, inoculum size, CaCl(2) concentration, CuSO(4) concentration, and incubation time were selected for further optimization studies using a Hoke design. The application of the response surface methodology allows us to determine a set of optimal conditions (CaCl(2), 5.5 mg/gs, CuSO(4), 2.5 mg/gs, inoculum size, 3 fungal discs (6 mm Ø), and 13 days of static cultivation). Experiments carried out under these conditions led to a laccase production yield of 150 U/g dry substrate.
authors.affiliation: Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, route de Soukra 3038 Sfax, Tunisia.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Neifar
authors.forename: Amel
authors.initials: A
authors.lastname: Kamoun
authors.forename: Atef
authors.initials: A
authors.lastname: Jaouani
authors.forename: Raoudha
authors.initials: R
authors.lastname: Ellouze-Ghorbel
authors.forename: Semia
authors.initials: S
authors.lastname: Ellouze-Chaabouni