Journal
BIORESOURCE TECHNOLOGY
Volume 193, Issue -, Pages 345-356Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.06.114
Keywords
Steam explosion; Enzymatic digestibility; Xylose yield; Degradation products; Water holding capacity
Funding
- National Basic Research Program of China (973 Project) [2011CB707401]
- Open Funding Project of the National Key Laboratory of Biochemical Engineering [2013KF-01]
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A novel conversion process using steam explosion combined with enzymatic digestibility was exploited to increase sugar yield. Results showed that glucan and xylan recovery decreased with the increase of holding temperature and residence time in SE, respectively, while glucan and xylan conversion exhibited an opposite trend. The optimal conditions of steam explosion were 160 degrees C and 48 min, under which glucan and xylan recovery was 93.4% and 71.6%, respectively. Glucan and xylan conversion at 18% solid loading by periodic peristalsis increased by 3.4-5.8% and 4.5-6.2%, respectively, compared with that by water baths shaker. In the whole process, glucose, xylose and total sugar yield reached to 77.3%, 62.8% and 72.3%, respectively. The yield of hydroxymethyl furfural, furfural and lignin-derived products was 6.3 x 10(-2), 7.5 x 10(-2) and less than 3.7 x 10(-2) g/100 g feedstock, respectively. This novel conversion process increased sugar recovery, reduced degradation products formation, improved digestibility efficiency, and hence increased sugar yield. (C) 2015 Elsevier Ltd. All rights reserved.
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