发明授权
- 专利标题： Fermentation process starting from cellulosic biomass and involving the recirculation of detoxified stillage into the process
- 专利标题（中）： 发酵过程从纤维素生物质开始，并涉及将无毒废渣再循环到该过程中
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申请号： US13121611申请日： 2009-09-30
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公开(公告)号： US08110383B2公开(公告)日： 2012-02-07
- 发明人: Leif Jönsson , Björn Alriksson
- 申请人： Leif Jönsson , Björn Alriksson
- 申请人地址： SE Ornskoldsvik
- 专利权人： Sekab E-Technology AB
- 当前专利权人： Sekab E-Technology AB
- 当前专利权人地址： SE Ornskoldsvik
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： EP08165507 20080930
- 国际申请： PCT/EP2009/062690 WO 20090930
- 国际公布： WO2010/037780 WO 20100408
- 主分类号： C12P7/06
- IPC分类号： C12P7/06 ; C12P7/04
摘要：
A method for preparing a target chemical derivable from cellulosic biomass, involving detoxification of spent hydrolysate is provided. The method comprises the steps of providing cellulosic biomass, subjecting the cellulosic biomass to aqueous pretreatment, aqueous hydrolysis, and fermentation under conditions in which at least a part of the fermentable sugars are fermented into a primary target chemical, separating the primary target chemical from the fermented hydrolysate to provide a spent hydrolysate comprising inhibitory substances and detoxifying the spent hydrolysate by decreasing the concentration of at least one of the inhibitory substances using a detoxification biocatalyst selected from the group consisting of wild type, mutant and recombinant filamentous fungi and recirculating at least a part of the detoxified spent hydrolysate, optionally after further purification.
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