摘要
In this study,modified clean fractionation process was optimized for prairie cordgrass,with usage of alternative organic constituent-ethyl acetate.Other constituents of the solvent mixture included ethanol and water.Clean fractionation solvent was used in different proportions of the constituents.Process efficiency was determined by lignin recovery,solvent composition,as well as time and temperature applied to each sequential process.Glucose yield during enzymatic hydrolysis and overall pretreatment were calculated.Optimal conditions(125℃,37 min,with the solvent composition of ester:ethanol:water=32.5:22.5:45)yielded a 20%lignin recovery,38%glucose yield during enzymatic hydrolysis and 26%xylose recovery in aqueous fraction.
基金
This work was supported by funding from the South Dakota Center for Bioprocessing Research and Development,Sun Grant Initiative and SDSU Agricultural Experiment Station.
