Optimization of modified clean fractionation of prairie cordgrass  

作　　者：Iwona Cybulska Hanwu Lei James Julson Grzegorz Brudecki 

机构地区：[1]Department of Agricultural and Biosystems Engineering,South Dakota State University,Brookings,South Dakota 57007 USA [2]Bioproducts,Sciences and Engineering Laboratory,Department of Biological Systems Engineering,Washington State University,Richland,Washington 99352 USA

出　　处：《International Journal of Agricultural and Biological Engineering》2012年第2期42-51,共10页国际农业与生物工程学报（英文）

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.

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.

关 键 词：BIOFUEL clean fractionation prairie cordgrass enzymatic hydrolysis lignocellulosic ethanol ethyl acetate biomass organosolv pretreatment 

分 类 号：O62[理学—有机化学]