南京林业大学学报（自然科学版）Issue(4)：137-142,6.DOI:10.3969/j.issn.1000-2006.2015.04.024
稀硫酸水解预处理对麦草制浆备料废渣酶水解糖化的影响
Effect of dilute acid hydrolysis pretreatment on the enzymatic saccharification of wheat straw handling residue
摘要
Abstract
The wheat straw handling residue produced in pulp mills are difficult to be utilized efficiently and economical⁃ly due to the complicated composition and large quantities. However, as a cheap lignocellulosic material, the utilization of the residue to produce fuel ethanol offers a great potential for reducing solid waste emission and producing great eco⁃nomic benefits. The effects of dilute acid hydrolysis pretreatment on chemical composition and enzymatic saccharification of wheat straw handling residue were investigated. The results showed that the sugar conversion of enzymatic saccharifica⁃tion was low after auto⁃hydrolysis pretreatment at 170℃. The addition of dilute sulfuric acid in the pretreatment was ben⁃eficial to enhance the enzymatic saccharification. The sugar conversion of unwashed pretreated wheat straw handling resi⁃due was higher than that of washed one. The total sugar conversion of unwashed pretreated materials increased with the increase dosage of sulfuric acid, and then it decreased with the continuous increasing charge. The glucan and xylan con⁃version reached up to 71.9% and 73.9%, respectively, and the total sugar conversion reached the maximum ( closed to 70%), for the substrate with pre⁃hydrolysis (0.32% H2SO4, 170℃) and PFI refining (8 000 revolutions), hydrolyzed at a cellulase loading of 20 μmol/( min·g) .关键词
麦草备料废渣/稀硫酸水解/预处理/酶水解糖化/糖转化率Key words
wheat straw handling residue/dilute acid hydrolysis/pretreatment/enzymatic saccharification/sugar con-version分类
化学化工引用本文复制引用
吕佳青,毕衍金,严希希,金永灿..稀硫酸水解预处理对麦草制浆备料废渣酶水解糖化的影响[J].南京林业大学学报（自然科学版）,2015,(4):137-142,6.基金项目
国家自然科学基金项目（31370571）；高等学校博士学科点专项科研基金（20133204110006）；江苏省基础研究计划（ BK20141473）；江苏高校优势学科建设工程资助项目 （）
