title: Optimization of inulinase production from low cost substrates using Plackett-Burman and Taguchi methods.
abstract: Four marine-derived fungal isolates were screened for the production of inulinase enzyme from low cost substrates under solid state fermentation (SSF), one of them identified as Aspergillus terreus showed the highest inulinase activity using artichoke leaves as a solid substrate. Sequential optimization strategy, based on statistical experimental designs was employed to optimize the composition of the medium, including Plackett-Burman and Taguchi's (L9 3(4)) orthogonal array designs. Under the optimized conditions, inulinase activity (21.058 U/gds) reached the predicted maximum activity derived from the taguchi methodology, which increased about 4.79-folds the initial production medium. Fructose was produced, as an end product of inulin hydrolysis proving that the enzyme produced was exoinulinase. The marine-derived A. terreus is suggested as a new potential candidate for industrial enzymatic production of fructose from low cost substrate containing inulin as an economic source.
authors: Chemistry of Natural and Microbial Products Department, National Research Centre, Cairo, Egypt. Electronic address: aabass44@yahoo.com.
authors: Abeer A
authors: AA
authors: Abd El Aty
authors: Chemistry of Natural and Microbial Products Department, National Research Centre, Cairo, Egypt. Electronic address: halolty2009@yahoo.com.
authors: Hala R
authors: HR
authors: Wehaidy
authors: Chemistry of Natural and Microbial Products Department, National Research Centre, Cairo, Egypt. Electronic address: Fatenahmedalimostafa@yahoo.com.
authors: Faten A
authors: FA
authors: Mostafa
mesh_terms: D001230:Aspergillus / Q000378:metabolism; D002854:Chromatography, Paper; D005285:Fermentation; D006026:Glycoside Hydrolases / Q000096:biosynthesis*; D007444:Inulin / Q000378:metabolism; D008962:Models, Theoretical; D059748:Proteolysis
chemical_list: D007444:Inulin; D006026:Glycoside Hydrolases; C023086:inulinase
keywords: Aspergillus terreus; Inulinase; Optimization; Plackett–Burman design; Taguchi Method