化工学报2011，Vol.62Issue(11)：3256-3262,7.DOI:10.3969/j.issn.0438-1157.2011.11.040
木糖渣的有机溶剂预处理及酶解性能
Pretreatment of corncob residues in organic solvent and its effect on enzymatic digestibility
摘要
Abstract
Solid residues from dilute acid pretreatment process of corncob may be used to produce liquor fuels and chemicals by bioconversion because of its high cellulose content, but its high lignin content leads to decrease of cellulose enzymolysis efficiency. The digestibility of enzyme can be improved by removal of lignin in lignocelluloses materials with some organic solvent. In this paper, pretreatment of corncob residues was carried out in ethanol solution and effect of process parameters (pretreatment temperature and time, ethanol concentration, ratio of solid to liquid) on chemical components and enzymatic digestibility was studied. The results showed lignin of 53.26% could be removed under pretreatment conditions of ethanol concentration 50%, 210°C , ratio of solid to liquid 1 ∶ 8 and 60 min, and the conversion of cellulose to glucose increased from 69. 84% to 84. 42%. Compared with corncob residues, the pretreatment process was more effective for corn stover and corncob to remove lignin and increase enzymolysis efficiency of cellulose.关键词
木糖渣/预处理/有机溶剂/木素/纤维素酶解Key words
corncob residues/pretreatment/organic solvent/lignin/enzymatic hydrolysis分类
农业科技引用本文复制引用
岳军,姚兰,赵建,李雪芝,曲音波..木糖渣的有机溶剂预处理及酶解性能[J].化工学报,2011,62(11):3256-3262,7.基金项目
国家重点基础研究发展计划项目(2011CB707401) （2011CB707401）
国家自然科学基金项目(30970096) （30970096）
国际合作项目(2010DFA32560). （2010DFA32560）
