浓硫酸降解白酒丢糟制备降解糖液的条件研究  

Production conditions of sugar juice from distiller's grains of Chinese liquor by H2SO4-catalyzed degradation

作　　者：刘跃红[1] 张文学[1] 谭力[2] 本田建次[2] 

机构地区：[1]四川大学轻纺与食品学院食品系,四川成都610065 [2]熊本大学物质生命化学科

出　　处：《中国酿造》2011年第1期82-85,共4页China Brewing

基　　金：国家科技部国际合作项目(2009DFA60890)

摘　　要：以降解白酒丢糟中的可降解多糖转化为燃料酒精为目的,通过初步研究浓硫酸对白酒丢糟中的粗纤维及粗淀粉的二次降解发现,得出干丢糟转化为还原糖的降解条件为:70%(m/m)的H2SO4与干丢糟按7∶5的体积质量比混合,糊化30min,然后加水使硫酸的浓度稀释成22%(m/m)左右,在85℃的水浴条件下处理混合物1h,干丢糟的降解率可达到0.35g/g。在白酒鲜丢糟的浓硫酸降解放大试验中,用80%H2SO4与鲜丢糟干物质的体积质量比为1∶1比例混合,鲜丢糟还原糖降解率亦达到0.33g/g(鲜丢糟干物质计)较高水平。The degradable polysaccharides in distiller＇s grains of Chinese liquor could be degraded and converted into fuel ethanol. For this purpose, the secondary degradation of raw fiber and raw starch in distiller＇s grains by H2SO4 was studied. The degradation conditions of dry distiller＇s grains into reducing sugars were determined. The 70% H2SO4 and dry distiller＇s grains were mixed at the ratio of 7：5（v/w） and gelatinize for 30min. Then, the H2SO4 concentration was regulated to 22%（m/m） or so by adding water, followed by water-bath at 85% for lh. After the above treatment, the degradation rate of dry distiller＇s grains reached 0.35g/g. In the pilot scale test of H2SO4-catalyzed degradation of fresh distiller＇s grains, the degradation rate of fresh distiller＇s grains was 0.33g/g（using the dry matter of fresh distiller＇s grains for calculation） when 80% H2SO4 and fresh distiller＇s grains were mixed at the ratio of 1：1 （v/v）.

关 键 词：白酒丢糟 粗纤维 浓硫酸 糖化降解 

分 类 号：TQ261.9[化学工程—有机化工]