生物质化学工程2016，Vol.50Issue(6)：9-16,8.DOI:10.3969/j.issn.1673-5854.2016.06.002
氢氧化钠预处理对甘蔗渣酶解和发酵性能的影响
Impacts of NaOH P retreatment on Enzymolysis and Fermentation P erformance of Sugarcane Bagasse
摘要
Abstract
The impacts of different pretreatment conditions on enzymolysis and fermentation performance of sugarcane bagasse (SCB) pretreated by NaOH were investigated by single factor analysis and orthogonal experimental design.The effects of specific surface area and lignin content on enzymolysis of SCB were further studied.The results showed that the pretreatment temperature, time and mass fraction of NaOH significantly affected the enzymolysis and fermentation efficiency of the pretreated SCB. The optimal conditions for NaOH pretreatment were mass fraction of NaOH 4.5%,11 h and 85℃.Under these conditions,the cellulose content of the pretreated SCB reached 56.46% and increased by 46.16% compared with the raw SCB. And the xylan and Klason lignin contents reached 20.30% and 5.79%,which decreased by 15.77% and 72.87%,respectively.The reducing sugar yield reached 0.69 g/g substrate after 36 h enzymolysis. The specific surface area of pretreated SCB significantly increased ( the maximum value of 1.07 m2/g from 0.07 m2/g of the raw was obtained),while the lignin content decreased significantly.Both of them were beneficial for the enhancement of the enzymolysis and fermentation efficiency. It was found that when the specific surface area surpassed 0.30 m2/g,the initial enzymolysis rate and final efficiency could reach a balance.Besides,when the the lignin content was lower than 11%,the enzymolysis efficiency reached a balance.关键词
氢氧化钠预处理/甘蔗渣/酶解发酵Key words
NaOH pretreatment/sugarcane bagasse/enzymolysis and fermentation分类
化学化工引用本文复制引用
张宪宝,张腾,谢文化,朱明军..氢氧化钠预处理对甘蔗渣酶解和发酵性能的影响[J].生物质化学工程,2016,50(6):9-16,8.基金项目
国家自然科学基金资助项目(51278200,51478190)；广东省自然科学基金重点项目(2014A030311014) （51278200,51478190）
