挤压膨化甘薯粉生产燃料酒精试验

Test on the Fuel Alcohol Production Using Extrusion Sweet Potato Powder

以膨化甘薯粉为原料,通过单因素试验研究不同料水比、糖化酶用量、糖化时间、酵母接种量等几个主要因素对挤压膨化甘薯粉酒精发酵的影响。试验结果表明,挤压膨化甘薯粉生产燃料酒精的最佳条件为料水比1.0∶2.0、糖化酶用量110 U/g、糖化时间30 min、酵母接种量0.10%。在该工艺条件下,发酵醪酒精体积分数达到14.92%(v/v),与传统酒精发酵工艺相比,酒精体积分数提高了3.07个百分点。外加氮源对发酵没有明显的作用。

The effects of the ratio of material to water,amount of saccharifying enzyme,saccharification time,yeast inoculation quantity etc.on extruded sweet potato were studied.The optimal technological conditions through single factor experiment were obtained.The results showed that ratio of material to water was 1.0 ∶2.0,doses of saccharifying enzyme as 110 U/g,saccharification time as 30 min,yeast inoculation quantity as 0.10% was the optimal technological conditions,the alcohol content of fermentation mash was 14.92%（v/v）.Compared with the traditional alcohol fermentation process,the alcohol content of fermentation mash had improved 3.07 Percentage Point.Addition of nitrogen source could not strengthen fermentation evidently.