摘要
白酒丢糟中含有大量纤维素、半纤维素及淀粉等碳水化合物,可用酸将其水解为可发酵糖,然后进一步生产燃料酒精。本研究以稀盐酸为催化剂,首先通过单因素试验设计,确定了白酒丢糟稀盐酸水解的最适液固比为8,然后进一步利用L9(34)正交试验设计,确定了白酒丢糟两步稀盐酸水解的最适条件为第一步用1%HCl于120℃水解0.5h,第二步用2%HCl于120℃水解3h,在此条件下还原糖产率为3.35g/g丢糟。
Fermented grain Waste（FGW） is the main residue in Chinese spirit industry,which contains a huge amount of carbohydrate,such as cellulose,hemicellulose and starch.It has the potential to sever as a feedstock for ethanol production.In present study,single-factor test was employed to optimize the liquid/solid ratio using dilute hydrochloric acid,which was conformed at a ratio of 8ml/g.Subsequently,orthogonal experimental design L9（3^4） was employed to optimize the saccharification conditions using a two-stage dilute hydrochloric acid hydrolysis process.The result showed that saccharification by 1% HCl at 120℃ for 0.5 hour followed by 2% HCl at 120℃ for 3 hours gave the maximum sugar yield of 3.35g/g-dry FWG.
出处
《食品与发酵科技》
CAS
2011年第2期25-27,31,共4页
Food and Fermentation Science & Technology
基金
四川省科技厅国际合作项目2007HH009
关键词
白酒丢糟
乙醇
盐酸水解
正交试验设计
Fermented grain waste
ethanol
acid saccharification
orthogonal experimental design
