摘要
采用蒸汽爆破处理后稻杆的酶解液进行酒精发酵的实验。稻杆含有水溶性物质、甲醇可溶性的木质素、克拉松木质素、纤维素和其他一些小分子物质。蒸汽处理有利于除去稻杆中的木质素,从而使稻杆易于被酶水解和进行酒精发酵。在压力为3.5MPa条件下,采用蒸汽处理稻杆2min,再经绿色木霉纤维素酶水解后,稻杆中的多糖(纤维素,半纤维素)几乎完全被水解为单糖(葡萄糖,木糖)。在带有渗透蒸发系统的膜生物反应器中乙醇的浓度能达到50g/L,这是发酵液中乙醇浓度的5倍。能量的效率即燃烧的乙醇与产生的能量(用来产生蒸汽之比)在3.5MPa,2min条件下达到最大。
Stalk enzymolysis solution treated by steam blasting was used for alcohol fermentation experiment.Stalk contained water-solu-bility substances,methanol soluble lignose,pine lignose,cellulose and other some micromolecule compounds.Steam blasting treatment could remove lignose from stalk and make stalk more easier for enzymolysis and alcohol fermentation.Under3.5MPa pressure,stalk treated by steam for2min,then underwent Meicelase enzymolysis,the amylose(cellulose and hemicellulose)in stalk almost hydrolyzed into monose(glucose and xylose).Alcohol concentration in membrane bioreactor equipped with infiltration and evaporation system could reach50g /L,5times of alcohol concentration in fermenting solution.Energy efficiency(energy produced by alcohol burn)reached the highest value under3.5MPa pressure and2min steam treatment.(Tran.by YUE Yang)
出处
《酿酒科技》
2004年第5期75-78,共4页
Liquor-Making Science & Technology
关键词
燃料乙醇
稻杆原料
蒸汽爆破
酶法糖化
渗透蒸发
fuel alcohol
stalk
steam blasting
saccharification by enzymolysis
infiltration and evaporation
