期刊
BIORESOURCE TECHNOLOGY
卷 150, 期 -, 页码 278-286出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.10.015
关键词
Autohydrolysis; beta-O-4 Linkages; Organosolv delignification; Lignin; Structural analysis
资金
- National Natural Science Foundation of China [31110103902]
- Major State Basic Research Projects of China [973-2010CB732204, 863-2012AA023204]
- Fundamental Research Funds for the Central Universities [BLYJ201313]
Bamboo (Phyllostachys pubescens) was successfully fractionated using a three-step integrated process: (1) autohydrolysis pretreatment facilitating xylooligosaccharide (XOS) production (2) organosolv delignification with organic acids to obtain high-purity lignin, and (3) extended delignification with alkaline hydrogen peroxide (AHP) to produce purified pulp. The integrated process was comprehensively evaluated by component analysis, SEM, XRD, and CP-MAS NMR techniques. Emphatically, the fundamental chemistry of the lignin fragments obtained from the integrated process was thoroughly investigated by gel permeation chromatography and solution-state NMR techniques (quantitative C-13, 2D-FISQC, and P-31-NMR spectroscopies). It is believed that the integrated process facilitate the production of XOS, high-purity lignin, and purified pulp. Moreover, the enhanced understanding of structural features and chemical reactivity of lignin polymers will maximize their utilizations in a future biorefinery industry. (C) 2013 Elsevier Ltd. All rights reserved.
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