Novel process for the coproduction of xylo-oligosaccharide and glucose from reed scraps of reed pulp mill

Meixia Chen; Jie Lu; Yi Cheng; Qiang Li; Haisong Wang

doi:10.1016/j.carbpol.2019.03.068

Novel process for the coproduction of xylo-oligosaccharide and glucose from reed scraps of reed pulp mill

Carbohydr Polym. 2019 Jul 1:215:82-89. doi: 10.1016/j.carbpol.2019.03.068. Epub 2019 Mar 21.

Authors

Meixia Chen¹, Jie Lu¹, Yi Cheng¹, Qiang Li², Haisong Wang³

Affiliations

¹ Liaoning Key Laboratory of Pulp and Papermaking Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China.
² Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77840, USA. Electronic address: liqerlee@gmail.com.
³ Liaoning Key Laboratory of Pulp and Papermaking Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China. Electronic address: wanghs@dlpu.edu.cn.

PMID: 30981374
DOI: 10.1016/j.carbpol.2019.03.068

Abstract

Current utilization of reed scraps (RS) from reed pulping mills is just burning and burying, remaining the unused RS a major industry waste. The aim of this study was to valorize RS by utilizing it as feedstock for xylo-oligosaccharide (XOS) production. The RS was subjected to dilute acid, alkaline, and liquid hot water (LHW) pretreatments to get the pretreated RS, which was then subjected to xylanase and subsequently cellulase enzymatic to produce XOS and glucose as well. The highest yield of XOS and glucose were 0.144 g and 0.304 g / g of RS, respectively, which were obtained from the LHW pretreatment under the optimized conditions of 170 °C, 1:8 solid loadings and 30 min duration. Overall, by upgrading RS waste into XOS and glucose as value-added products of reed pulp production, we thereby paved a new way in this research to valorize the waste from reed pulping mills.

Keywords: Glucose; Hemicellulose; Liquid hot water pretreatment; Reed scraps; Xylo-oligosaccharide.