木薯半连续同步糖化发酵乙醇  

Production of ethanol by semi-continuous simultaneous saccharification and fermentation from cassava

作　　者：徐大鹏 冯英 王俊增 赵彦平 刘永涛 师立亮 

机构地区：[1]山东泓达生物科技有限公司,山东临沂276400 [2]山东昆达生物科技有限公司,山东临沂276400 [3]山东沂蒙酒业有限公司,山东临沂276400

出　　处：《中国酿造》2012年第4期122-125,共4页China Brewing

摘　　要：研究了用木薯为原料,半连续同步糖化发酵生产乙醇的工艺。工艺条件为:原料粉碎粒度:Φ1.5mm,料水比:1∶2.3,α-淀粉酶、糖化酶的添加量分别为9U/g木薯粉,120U/g木薯粉,95℃下蒸煮90min～110min,60℃下前糖化35min～40min。前期发酵温度28℃,中后期发酵温度32℃,总发酵时间69h。在此条件下酒精度达到13.5%vol,半连续发酵17d,为进一步研究以木薯为原料生产乙醇工业化提供了依据。The production of ethanol by semi-continuous simultaneous saccharification and fermentation using cassava as a raw material was investigated.The processing conditions were： cassava particle size Φ1.5mm,ratio of cassava to water 1∶2.3,α-amylase content 9U/g-cassava,glucoamylase content 120U/g-cassava,steaming at 95℃ for 90min～110min,pre-saccharification at 60℃ for 35min～40min followed by prior fermentation at 28℃ and posterior fermentation at 32℃,and the total fermentation time 69h.Under these conditions,the ethanol concentration reached 13.5%vol.The semi-continuous fermentation lasted 17d.The results would be beneficial for industrialization.

关 键 词：乙醇 半连续发酵 同步糖化发酵 木薯 

分 类 号：TQ920.6[轻工技术与工程—发酵工程]