Hydrolysis of beet pulp polysaccharides by extracts of solid‐state cultures of Pencicillium capsulatum

Abstract

Extracts of solid-state cultures of Penicillium capsulatum grown on beet pulp exhibit cellulolytic, hemicellulolytic, and pectinolytic activities. Such extracts catalyzed extensive solubilization of untreated beet pulp. The effects of pH, temperature, and endproducts on the saccharification process were investigated.

Microbial oil accumulation and cellulase secretion of the endophytic fungi from oleaginous plants

“…Their cellulase yields were 0.31~0.69 FPU/g initial dry substrate after 6 d of cultivation (Table 1). In literatures under optimal culture conditions the cellulase yields by solid state fermentation on lignocellulosic biomass were 2.7~7.7 (Shamala and Sreekantiah, 1986;Considine et al, 1988;Kalogeris et al, 1999), 18 (Tuohy et al, 1990) and 19 FPU/g initial dry substrate (Kang et al, 2004). The cellulase yields of these oleaginous strains in present experiments were relatively low, yet they may be increased by further work.…”

β-Glucosidase Recovery from a Solid-State Fermentation System by Aspergillus niger

“…The compost extract was capable of releasing reducing sugars from wheat straw, suggesting a possible biotechnological role for this extract in the upgrading of waste straw to animal fodder [27]. The cellulolytic enzymes were extracted from the fermented beet pulp with 0.1 M sodium acetate buffer, pH 5.0 (10 volumes/g pulp) under shaking conditions at room temperature [9]. Citrate buffer (0.1 M, pH 4.8) was tried to leach cellulase from the fermented bran [10].…”

Efficiency of Developed Solid State Bioreactor 'FERMSOSTAT' on Cellulolytic and Xylanase Enzymes Production

“…However, the result obtained was in disagreement to Xu et al (2008), who obtained optimum xylanase activity of 14637 U/g after 2 days of fermentation process using A. niger XY-1 grown on wheat bran in the shake flask. Meanwhile, Considine et al (1988), obtained about 386 U/g of xylanase activity when T. reesei MCG7 was grown on beet pulp at 70% (w/w) moisture content and 27 o C. On the other hand, FPase production increased and reaching maximum level after 5 days of fermentation process. Under optimum production day, about 3.21 U/g and 0.83 U/mg G glucosamine of enzyme activity and productivity were detected, respectively.…”