NDLI: The Synergic Relationship Between Xylan Removal and Enhanced Cellulose Digestibility for Bioethanol Production: Reactive Area, Crystallinity, and Inhibitation

Content Provider	Springer Nature Link
Author	Yang, Haiyan Chen, Jinghuan Chen, Qian Wang, Kun Sun, Run Cang
Copyright Year	2015
Abstract	Hemicellulosic fraction is thought to act as a barrier, preventing the access of cellulase to cellulose. The impact of xylan removal, by both of the chemical and biological processes, on the cellulose accessibility was comparatively studied. Poplar holocellulose with 24.7 % xylan was taken as the starting material, and the gradual removal of xylan was achieved by successive treatments with increasing NaOH concentration. The data indicated that partial removal of hemicelluloses, not complete, favored the crystal configuration transformation of cellulose and then the lignocellulose/biomass enzymatic digestibility/saccharification. The maximum enzymatic efficiency (94.6 %) was achieved when cellulose II was formed as the NaOH concentration higher than 2.0 M. With the supplement of xylanase, the inhibitory effect from oligosaccharides was probably reduced, but the accumulation of xylose still negatively affected the cellulase cocktails. From the economic perspective, the xylanase loading of 5.0 IU/g xylan was proposed and 1.2-fold increment of cellulose hydrolysis was final obtained.
Starting Page	1847
Ending Page	1855
Page Count	9
File Format	PDF
ISSN	19391234
Journal	BioEnergy Research
Volume Number	8
Issue Number	4
e-ISSN	19391242
Language	English
Publisher	Springer US
Publisher Date	2015-06-21
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Xylan removal Structural transition Bioconversion efficiency Simultaneous saccharification and fermentation Bioethanol Plant Sciences Plant Genetics & Genomics Plant Breeding/Biotechnology Plant Ecology Wood Science & Technology
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment Agronomy and Crop Science

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