木薯干原料同步糖化发酵生产乙醇

Production of Ethanol by Simultaneous Saccharifiction and Fermentation from Cassava

提出了用木薯干为原料,同步糖化发酵(SSF)开发燃料乙醇的新工艺.对各个影响条件进行了研究,获得了最佳的工艺条件:原料粉碎粒度0.45mm,加水比2.8,100℃下蒸煮30min,α?淀粉酶、糖化酶的添加量分别为10,180U/g,30℃下发酵48h.并与普通的先糖化后发酵(SHF)生产模式进行了对比,认为SSF具有工艺简单、能耗低、发酵迅速、醪液酒精度高等众多优点,值得工业推广.

The production of ethanol by simultaneous saccharification and fermentation (SSF), using cassava as raw material is presented. Through experiments under different conditions, the optimal technological conditions were obtained: cassava particle size below 0.45 mm, radio of cassava to water at 1:2.8, α-amylase and glucoamylase being 10 and 180 U/g respectively, and fermentation at 30℃ for 48 h. In comparison with the traditional production by separate hydrolysis and fermentation (SHF), it was found that SSF had many advan- tages, such as simple technology, low energy consumption, rapid fermentation and high concentration of ethanol, which is worthwhile to be explored and implemented in industry.