摘要
试验研究了稀硫酸常压预处理对纤维素酶水解麦秆的影响。试验结果表明:麦秆在温度为80℃、稀硫酸质量分数为4%、固液比(质量体积比,g/ml,下同)为12∶5的条件下水解4 h,再在温度为50℃、pH值为5.2、酶量/干物质为25 FPU/g、MgSO4/干物质为0.1 mg/g条件下水解12 h,葡萄糖得率为34.5%。经酸法—酶法处理的麦秆比未经酸处理直接酶解的麦秆的葡萄糖得率提高50%。
The impact factors of wheat straw pretreatment using dilute sulfuric acid and the enzymatic-hydrolysis of wheat straw after acid pretreatment were studied. Through the analysis of orthogonal experiment for the main factors, the optimal acid pretreatment conditions were： the wheat straw temperature is 80 %, the acid concentration of 4%, the ratio of solid mass to water is 1：25, the hydrolysis time is 6 h and the optimal enzymatic hydrolysis conditions were： at 50 ℃, pH value is 5.2, the amount of dry enzyme is 25 FPU with 0.1 mg of dry MgSO4/g, the hydrolysis time is 12 h, the experiment showed that the yield of glucose is 34.5%, which is 50% higher than that of wheat straw hydrolysis without acid pretreatment.
出处
《可再生能源》
CAS
2008年第2期50-53,共4页
Renewable Energy Resources
基金
宜昌市科技攻关项目(A2007103-1)
关键词
麦草
酸预处理
酶水解
wheat straw
acid pretreatment
enzymatic hydrolysis
