A biotechnological process efficiently co-produces two high value-added products, glucose and xylooligosaccharides, from sugarcane bagasse. (March 2016)

• Record Type: Journal Article
• Authors: Xue, Jian-Long; Zhao, Shuai; Liang, Rui-Ming; Yin, Xin; Jiang, Sui-Xin; Su, Lin-Hui; Yang, Qi; Duan, Cheng-Jie; Liu, Jun-Liang; Feng, Jia-Xun
• Is Part Of: Bioresource technology. Volume 204(2016)
• Page Start: 130
• Page End: 138
• Publication Date: 2016-03
• Subjects: Box–Behnken design -- Co-production of glucose and xylooligosaccharides -- High value-added products -- Sugarcane bagasse; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.12.082
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: A process for co-production of glucose and XOS from SB was designed. XRSB from NaOH–H2 O2 pretreatment had the highest cellulose content and conversion. Conversion of XRSB to glucose at 98.69% was achieved. The achieved conversion of SB xylan to XOS at 57.36% was the highest in the literature. The glucose of 34.43 g and XOS of 5.96 g were co-produced from 100 g raw SB. Abstract: In this study, a co-production of two high value-added products, glucose and xylooligosaccharides (XOS), was investigated by utilizing sugarcane bagasse (SB) within a multi-product bio-refinery framework optimized by Box–Behnken design-based response surface methodology. The developed process resulted in a maximum cellulose conversion of xylan-removed SB, 98.69 ± 1.30%, and a maximum extracted SB xylan conversion into XOS (xylobiose and xylotriose) of 57.36 ± 0.79% that was the highest SB xylan conversion reported in the literature, employing cellulase from Penicillium oxalicum EU2106 and recombinant endo-β-1, 4-xylanase in Pichia pastoris . Consequently, a mass balance analysis showed that the maximum yields of glucose and XOS were 34.43 ± 0.32 g and 5.96 ± 0.09 g per 100 g raw SB. Overall, this described process may be a preferred option for the comprehensive utilization of SB.