亚硫酸盐预处理对蔗渣酶水解效率的影响  

Effect of neutral-sulfite pretreatment on the subsequent enzymatic hydrolysis efficiency of bagasse

作　　者：罗小林[1,2,3] 刘婧[1] 马晓娟[1] 曹石林[1] 陈礼辉[1] 黄六莲[1] 

机构地区：[1]福建农林大学材料工程学院,福建福州350002 [2]华南理工大学制浆造纸工程国家重点实验室,广东广州510641 [3]中国科学院生物燃料重点实验室,山东青岛266101

出　　处：《福建农林大学学报（自然科学版）》2013年第5期527-530,共4页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：教育部博士点基金资助项目(20123515120018);国家自然科学基金资助项目(31300495);福建省自然科学基金资助项目(2013J05041);福建省教育厅资助项目(JK2012015);中国科学院生物燃料重点实验室开放基金资助项目(CASKLB201308);华南理工大学制浆与造纸工程国家重点实验室开放基金资助项目(201222)

摘　　要：采用中性亚硫酸盐对蔗渣进行预处理,研究了脱木素率对蔗渣中纤维素酶水解效率的影响.结果表明,脱木素率越高,纤维素酶水解的转化率也越高;较优的脱木素率为45%,其对应的葡萄糖回收率约为80%.糖化后葡萄糖的回收率与脱木素率和预处理后固体基质得率的对应变化趋势均呈Boltzmann函数关系.达到相同葡萄糖回收率时,初始亚硫酸钠用量越大,预处理液中残余硫化物的浓度也越高.Neutral-sulfite pretreatment was used to pretreat bagasse. The effect of delignification on the cellulose enzymatic hydrolysis efficiency of bagasse was further studied. It was found that the more delignification obtained, the higher the conversion of cellulose to glucose achieved. The optimal delignification of bagasse was 45%, corresponding glucose recovery was close to 80%. Moreover, the relationship between glucose recovery and delignification, pretreatment solid yield was observed to be Boltzmann function. For an certain glucose recovery, more dosage of sodium sulfite resulted in higher concentration of residual sulfides in pretreatment liquor.

关 键 词：中性亚硫酸盐预处理 葡萄糖回收率 酶水解 H因子 亚硫酸钠 

分 类 号：TQ013.2[化学工程]