Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7068233 | Bioresource Technology | 2018 | 4 Pages |
Abstract
Formic acid/water binary solvent extraction with formic acid fraction lower than 77.5% (w/w) of azeotrope was used to extract hemicellulose-derived saccharides from poplar wood at various levels of severity. The highest xylose yield of 77.8% and arabinose yield of 93.5% were obtained at 120â¯Â°C and 1â¯h. To reduce cellulose hydrolysis and facilitate downstream xylose crystallization, mild conditions at 90â¯Â°C and 4â¯h was chosen as optimum severity, which led to the highest xylose fraction of 81.7% in all saccharides extracted, with a remarkable xylose yield of 73.1%. Mass balance analysis showed that 5.84% of xylan was degraded, but only 0.25% of xylan ended up as furfural at optimum severity. The proposed extraction process has high feasibility for industrial application since the low formic acid fraction in solvent allows simple recovery and concentration of used solvent.
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Authors
Jiayun Xu, Yingjuan Fu, Guoyu Tian, Qun Li, Na Liu, Menghua Qin, Zhaojiang Wang,