Novel process for the coproduction of xylo-oligosaccharides, fermentable sugars, and lignosulfonates from hardwood

作者：Huang, Caoxing; Jeuck, Ben; Du, Jing; Yong, Qiang; Chang, Hou-min; Jameel, Hasan^*; Phillips, Richard

来源：Bioresource Technology, 2016, 219: 600-607.

DOI：10.1016/j.biortech.2016.08.051

• Coproduction
• Xylo-oligosaccharide
• Fermentable sugar
• Lignosulfonate

Many biorefineries have not been commercialized due to poor economic returns from final products. In this work, a novel process has been developed to coproduce valuable sugars, xylo-oligosaccharides, and lignosulfonates from hardwood. The modified process includes a mild autohydrolysis pretreatment, which enables for the recovery of the xylo-oligosaccharides in auto-hydrolysate. Following enzymatic hydrolysis, the residue is sulfomethylated to produce lignosulfonates. Recycling the sulfomethylation residues increased both the glucan recovery and lignosulfonate production. The glucose recovery was increased from 81.7% to 87.9%. Steady state simulation using 100 g of hardwood produced 46.7 g sugars, 5.9 g xylo-oligosaccharides, and 25.7 g lignosulfonates, which were significantly higher than that produced from the no-recycling process with 39.1 g sugars, 5.9 g xylo-oligosaccharides, and 15.0 g lignosulfonates. The results indicate that this novel biorefinery process can improve the production of fermentable sugars and lignosulfonate from hardwood as compared to a conventional biorefinery process.

• 出版日期2016-11
• 单位南京林业大学