期刊
BIORESOURCE TECHNOLOGY
卷 285, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121355
关键词
Bamboo residues; Post-extraction; Enzymatic digestibility; Acid pretreatment; Delignification
资金
- National Natural Science Foundation of China [31800501, 31730106]
- Natural Science Foundation of Jiangsu Province [BK20180772]
In this work, a mild and facile post-extraction using different reagents was evaluated to overcome these recalcitrance for improving the enzymatic digestibility of acid-pretreated bamboo residues by removing the lignin and disrupting its inhibitory properties. Results showed that the enzymatic digestibility of acid-pretreated bamboo residues can be improved from 15.4% to 61.4%, 59.7%, and 42.8% by room temperature post-extraction with phosphoric acid, urea, and ethanol, respectively. Several compelling correlations (R-2 > 0.5) were observable between enzymatic digestibility and structural changes, including delignification, reducing of sub-strate hydrophobicity, altering cellulose crystallinity, and elevations to the residual lignin syringyl-to-guaiacyl (S/G) ratio and functional groups. The results serve as a demonstration of the downstream value that can be gained when coupling a post-extraction process with acid pretreatment of bamboo residues, resulting in greater fermentable sugar production.
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