木薯生料发酵制备燃料乙醇的工艺条件研究

试验对木薯生料发酵制备乙醇的工艺条件进行了优化研究,对影响发酵过程的生料淀粉水解酶用量、料液比、发酵初始pH和发酵温度四个因素在单因素试验的基础上进行了正交试验优化,得到最佳发酵条件为生料水解酶用量4 mL/kg,料液比1∶3.5,初始pH4.5,发酵温度37℃,根据优化条件进行验证试验,总糖消耗率与淀粉利用率分别为83.29%和79.80%,但与低温水解发酵工艺相比尚有一段距离。

The Study on the Processing of Fuel Ethanol from Uncooked Cassava

The fermentation conditions of fuel ethanol from uncooked cassava were studied,including uncooked material hydrolase,liquid ratio,fermentation temperature,pH.Through orthogonal experiment,the optimal conditions were determined: uncooked material hydrolase of 4 mL/kg,liquid ratio of 1:3.5,pH of 4.5,37 ℃,with the optimized conditions the carbohydrate consumption rate was 83.29%,and the starch utilization rate could be 79.80%,but compared with the low temperature hydrolysis process the method remained inadequate.