Journal
BIORESOURCE TECHNOLOGY
Volume 175, Issue -, Pages 529-536Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.10.160
Keywords
Bamboo fractions; Aqueous ammonia pretreatment; Dilute acid pretreatment; Structure properties; Enzymatic hydrolysis
Funding
- Natural Science Foundation of China [31270622]
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The effect of two pretreatments methods, aqueous ammonia (SAA) and dilute acid (DA), on the chemical compositions, cellulose crystallinity, morphologic change, and enzymatic hydrolysis of bamboo fractions (bamboo yellow, timber, green, and knot) was compared. Bamboo fractions with SAA pretreatment had better hydrolysability than those with DA pretreatment. High crystallinity index resulted in low hydrolysis yield in the conversion of SAA pretreated bamboo fractions, not DA pretreated fractions. The increase of cellulase loading had modestly positive effect in the hydrolysis of both SAA and DA pretreated bamboo fractions, while supplement of xylanase significantly increased the hydrolysis of the pretreated bamboo fractions, especially after SAA pretreatment. The results indicated that SAA pretreatment was more effective than DA pretreatment in conversion of bamboo fractions, and supplementation of xylanase was necessary in effective conversion of the SAA pretreated fractions into fermentable sugars. (C) 2014 Elsevier Ltd. All rights reserved.
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