公开(公告)号：US4342831A

公开(公告)日：1982-08-03

申请号：US252351

申请日：1981-04-09

申请人： Marcel D. Faber ,  Richard H. Ernst ,  Philip H. Lefebvre

发明人： Marcel D. Faber ,  Richard H. Ernst ,  Philip H. Lefebvre

IPC分类号： C12P7/10 ,  C13K1/02 ,  C12P7/06

CPC分类号： C13K1/02 ,  C12P7/10 ,  Y02E50/16

摘要： Method of preconditioning acid hydrolyzates derived from lignocellulosic materials such as sawdust or newspaper and preconditioned acid hydrolyzates are provided. The preconditioning negates the effect of substances which tend to inhibit fermentation and comprises a series of steps including steam-stripping, calcium oxide treatment at a pH of 10 to 10.5, adjusting the pH to about 6 to 7 with a mineral acid and especially phosphoric acid and concentrating the hydrolyzate solution to a glucose concentration of less than 150 grams per liter. Glucose contained in such preconditioned hydrolyzates is readily fermentable to ethyl alcohol, in theoretical yield, after fermentation for as short a period as 1 to 2 hours.

摘要翻译： 提供了从木质纤维素材料如锯末或报纸和预处理酸水解产物得到的酸性水解产物预处理方法。 预处理消除了倾向于抑制发酵的物质的影响，并且包括一系列步骤，包括蒸汽汽提，pH为10至10.5的氧化钙处理，用无机酸特别是磷酸将pH调节至约6至7 并将水解产物溶液浓缩至小于150克/升的葡萄糖浓度。 在这种预处理的水解产物中含有的葡萄糖在发酵后短时间内可容易地发酵至乙醇，理论产率为1至2小时。