公开(公告)号：US20120220005A1

公开(公告)日：2012-08-30

申请号：US13393518

申请日：2009-09-02

申请人： Chikanori Kumagai ,  Noriyuki Taniyama ,  Yoshitoshi Nakamura

发明人： Chikanori Kumagai ,  Noriyuki Taniyama ,  Yoshitoshi Nakamura

IPC分类号： C12P7/06

CPC分类号： C12P7/10 ,  C12M45/02 ,  C12M45/20 ,  C12P7/14 ,  C12P2201/00 ,  Y02E50/16 ,  Y02E50/17

摘要： An object of the invention is to provide an inexpensive and efficient ethanol production method using lignocellulosic biomass as a raw material.The method for producing ethanol from lignocellulosic biomass of the present invention includes a lignocellulose decomposition step of subjecting lignocellulosic biomass to a steam explosion treatment or hydrolysis in a subcritical state followed by a flash treatment; a lignin removal step of immersing a solid residue resulting from the decomposition step in ethanol to remove lignin; and a C6 saccharification/simultaneous fermentation step of saccharifying the solid residue resulting from the lignin removal step with an enzyme and further fermenting the resulting product into ethanol with a C6 fermentation microorganism. By combining the steam explosion treatment and the lignin removal process by ethanol immersion, higher rates are achieved for the saccharification and fermentation of the biomass.

摘要翻译： 本发明的目的是提供使用木质纤维素生物质作为原料的廉价且有效的乙醇生产方法。 本发明的由木质纤维素生物质生产乙醇的方法包括木质纤维素分解步骤，使木质纤维素生物质在亚临界状态下进行蒸汽爆炸处理或水解，然后进行闪蒸处理; 木质素去除步骤，将由分解步骤得到的固体残留物浸入乙醇中以除去木质素; 以及通过酶将由木质素去除步骤得到的固体残渣糖化的C6糖化/同时发酵步骤，并用C6发酵微生物进一步将所得产物发酵成乙醇。 通过结合蒸汽爆炸处理和通过乙醇浸渍的木质素去除过程，实现了生物质的糖化和发酵的更高的速率。