Journal
BIORESOURCE TECHNOLOGY
Volume 243, Issue -, Pages 1105-1111Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.07.075
Keywords
Bamboo; Biphasic pretreatment; Enzymatic hydrolysis; Lignin; 2-Methyltetrahydrofuran
Funding
- Fundamental Research Funds for the Central Universities [2017PT06]
- Beijing Outstanding Talents Training Project [2016000020124G044]
- National Natural Science Foundation of China [31400508]
- State Key Laboratory of Pulp and Paper Engineering [201612]
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A biphasic pretreatment was adopted to disturb the recalcitrant structure of bamboo for further enzymatic hydrolysis and to obtain easily valorized lignin by-product. The biphasic system consisted of biomass-derived chemicals-2-methyltetrahydrofuran and oxalic acid as well as water, and the reactions were conducted at 120-180 degrees C for 20 min. The treatment resulted in notable removal of hemicelluloses and lignin. After the pretreatment, the cellulose conversion rate during enzymatic hydrolysis was enhanced by 6.7-fold as compared to the unpretreated raw material. Comprehensive analysis of the lignin product indicated that it exhibited representative structure (such as beta-O-4, beta-beta linkages) as compared to native lignin, contained a very low amount of contaminated sugars (0.67-2.39%), and had a relatively medium molecular weight (Mw 2240-3730 g/mol) and good solubility in many organic solvents. This indicated that the lignin showed great potential application in conversion into materials and liquid fuels. (C) 2017 Elsevier Ltd. All rights reserved.
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