title: Inulinase production by Kluyveromyces marxianus NRRL Y-7571 using solid state fermentation.
abstract: Inulinase is an enzyme relevant to fructose production by enzymatic hydrolysis of inulin. This enzyme is also applied in the production of fructo-oligosaccharides that may be used as a new food functional ingredient. Commercial inulinase is currently obtained using inulin as substrate, which is a relatively expensive raw material. In Brazil, the production of this enzyme using residues of sugarcane and corn industry (sugarcane bagasse, molasses, and corn steep liquor) is economically attractive, owing to the high amount and low cost of such residues. In this context, the aim of this work was the assessment of inulinase production by solid state fermentation using by Kluyveromyces marxianus NRRL Y-7571. The solid medium consisted of sugar cane bagasse supplemented with molasses and corn steep liquor. The production of inulinase was carried out using experimental design technique. The effect of temperature, moisture, and supplements content were investigated. The enzymatic activity reached a maximum of 445 units of inulinase per gram of dry substrate.
authors.affiliation: Universidade Regional Integrada do Alto Uruguai e das Missões - URI Campus de Erechim - Departamento de Engenharia de Alimentos Av. Sete de Setembro 1621, 99700-000, Erechim - RS.
authors.forename: João Paulo
authors.initials: JP
authors.lastname: Bender
authors.forename: Marcio Antônio
authors.initials: MA
authors.lastname: Mazutti
authors.forename: Débora
authors.initials: D
authors.lastname: de Oliveira
authors.forename: Marco
authors.initials: M
authors.lastname: Di Luccio
authors.forename: Helen
authors.initials: H
authors.lastname: Treichel
mesh_terms: D001203:Ascomycota / Q000201:enzymology* / Q000254:growth & development; D018929:Cell Culture Techniques / Q000379:methods; D004789:Enzyme Activation; D004795:Enzyme Stability; D005285:Fermentation; D007220:Industrial Waste / Q000517:prevention & control; D007339:Insulysin / Q000032:analysis* / Q000096:biosynthesis*; D008965:Molasses / Q000382:microbiology*; D013379:Substrate Specificity; D003313:Zea mays / Q000382:microbiology*
chemical_list: D007220:Industrial Waste; D007339:Insulysin