马铃薯酒精浓醪发酵工艺条件的研究

Study on the high concentration ethanol fermentation of potato

酒精浓醪发酵是生产燃料乙醇的一个重要步骤,为了提高发酵醪的酒精度,研究了不同因素对马铃薯浓醪发酵的影响。以发酵醪的酒精度为指标,通过单因素实验和正交实验,得到马铃薯酒精浓醪发酵的最佳条件为:料水比1∶3.0,糖化酶添加量150U/g,初始pH值4.5,接种量6%,得到发酵醪的酒精度为14.90%(v/v)。

High gravity fermentation is an important step of alcohol fuel ethanol. The different factors affect the High gravity fermentation of potato. The optimal conditions of the high gravity fermentation of potato were summed up as follows： the proportion of materials and water was 1∶3.0, the recruitment of glucoamylase was 150 U/g, the pH value was 4.5, the amount of inoculation was 6%. Eventually, the ethanol degree of the high gravity fermentation of potato was 14.90%.