油菜秆酸水解糖化及水解液生产酒精的研究  

Research on Cole Stalk Saccharification under Diluted Acid & Ethanol Production from the Hydrolysate

作　　者：马黎[1] 张军伟[2] 

机构地区：[1]贵州大学化工学院,贵州贵阳550003 [2]东南大学市政工程系,江苏南京210096

出　　处：《酿酒科技》2009年第8期55-57,共3页Liquor-Making Science & Technology

摘　　要：对油菜秸秆酸水解糖化及水解液发酵成乙醇进行了研究。考察了稀酸浓度、温度、时间及液固比对酸水解的影响;以糖浓度为指标,用正交实验法探讨了酸水解的较佳条件;将浓缩及消毒后的酸水解糖液进行了发酵。结果表明,稀硫酸水解油菜秆以酸浓度(wt)为1.0%、温度为120℃、时间为60min、液固比(mL/g)8:1为最优,此时水解液中糖浓度可达到24.03g/L;N-1菌发酵78.20g/L的水解糖液以60h为最佳,此时乙醇产量为21.70g/L。Cole stalk saccharification under diluted sulfuric acid and ethnaol production by the fermentation of the hydrolysate was studied. The effects of diluted acid content, temperature, reaction time, and the ratio of liquid to solid on acid hydrolysis were investigated. With the concentration of reducing sugar as the criteria, the orthogonal experiments were carried out to investigate the optimum reaction conditions for acid hydrolysis. Then the hydrolysate was fermented after concentration and disinfection. The results showed that the optimum reaction conditions for acid hydrolysis of cole stalk were as follows： dilute sulfuric acid （wt） 1.0 %, temperature at 120 ℃, reaction time was 60min, the ratio of liquid to solid （mL/g） was 8：1, and the reducing sugar concentration could reach up to 24.03 g/L, the best fermentation time of 78.20 g/L hydrolysate by N-1 bacteria was 60 h and ethanol yield could achieve 21.70 g/L.

关 键 词：燃料乙醇 油菜秆 酸水解 还原糖 发酵 

分 类 号：TS262.2[轻工技术与工程—发酵工程] TS261.4[轻工技术与工程—食品科学与工程]