Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4997584 | Bioresource Technology | 2017 | 7 Pages |
â¢Organic amine catalytic organosolv pretreatment was developed.â¢High yield of monosaccharide was obtained after pretreatment and enzymatic hydrolysis.â¢High-quality and salt-free lignin was produced from pretreatment.
A novel and efficient organic amine and organosolv synergetic pretreatment method was developed to overcome the recalcitrance of lignocellulose to produce fermentable sugars and high-quality salt-free lignin. After optimization of the process parameters, a delignification of 81.7% and total sugar yield of 83.2% (87.1% glucose, 75.4% xylose) could be obtained using n-propylamine (10 mmol/g, biomass) as a catalyst and aqueous ethanol (60%, v/v) as a solvent. The susceptibility of the substrates to enzymatic digestibility was explained by their physical and chemical characteristics. The physical structure of extracted lignin showed higher β-aryl ether bonds content and functionalities, offering the potential for further downstream upgrading. The role of organic amine catalyst and a synergistic mechanism is proposed for the present system.
Graphical abstractDownload high-res image (112KB)Download full-size image