Abstract
The purpose of this study is to develop a technology for enzymatic processing for depolymerization of polysaccharides in wheat straw to obtain the maximum yield of glucose and sorbitol. Cellulolytic enzymes endo-1,4-β-glucanase (EC 3.2.1.4) and cellobiose (1,3-β-glucosidase) (CF 3.2.1.21) were isolated and studied in local strains Tr. viride 121, which are grown under deep cultivation conditions. A technology has been developed for obtaining a complex preparation “Cellozyme G20x” with a high yield and specific activity of cellulase, xylanase, β-glucanase and pectinase, and a scheme for purification from cellulases by precipitation, ultrafiltration, and freeze drying is not inferior in efficiency to commercial preparations. The physicochemical properties of the preparation “Cellozyme G20x” have been studied, the optimal parameters of the action and stability of the enzyme preparation have been established. The efficiency of Cellozyme G20x for hydrolysis of straw polysaccharides was 35-40% in terms of glucose yield.
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