Contact
    Start Publications Co-production of xylooligosaccharides and fermentable sugars ...
    ←  Publication Finder
    Attension

    Co-production of xylooligosaccharides and fermentable sugars from poplar through acetic acid pretreatment followed by poly (ethylene glycol) ether assisted alkali treatment

    Year: 2019

    Journal: Bioresour. Technol., Volume 288, SEP

    Authors: Lai, Chenhuan; Jia, Yuan; Wang, Jianglong; Wang, Ruwen; Zhang, Qiang; Chen, Liwei; Shi, Hao; Huang, Caoxing; Li, Xin; Yong, Qiang

    Organizations: National Natural Science FoundationNational Natural Science Foundation of China (NSFC) [31600463]; Natural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Province [BK20150874]; Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration [JPELBCPI2018006]; Priority Academic Program Development of Jiangsu Higher Education Institution (PAPD)

    Keywords: Poplar; Combined pretreatment; In-situ lignin modification; Xylooligosaccharides; Enzymatic hydrolysis

    A novel combined pretreatment process of poplar sawdust was established in this study based on the sequential acetic acid and alkali treatment with poly (ethylene glycol) diglycidyl ether (PEGDE). Effects of each treatment step on chemical composition, cellulose accessibility, and enzymatic digestibility of poplar sawdust was investigated. Acetic acid pretreatment remarkably increased cellulose accessibility while also producing a relatively high quantity of xylooligosaccharides (XOS) (37.6% of raw xylan). However, enzymatic digestibility remained low (28.3%) despite hemicellulose disruption. Post alkali treatment was next applied, leading to improvement on cellulose accessibility and enzymatic hydrolysis. Enzymatic hydrolysis was improved more significantly by successive alkali treatment with PEGDE. Its potential mechanisms attributable to enzymatic hydrolysis improvement were explored by revealing the changes to lignin properties. This work successfully demonstrated that recalcitrant waste woody biomass can be biorefined into both high-value XOS as well as relatively high yield of fermentable sugars.
    View publication