公开(公告)号：EP2904144B1

公开(公告)日：2020-08-05

申请号：EP13843684.5

申请日：2013-10-03

申请人： GranBio Intellectual Property Holdings, LLC

发明人： RETSINA, Theodora ,  PYLKKANEN, Vesa ,  RUTHERFORD, Steven

IPC分类号： D21C1/02 ,  D21C3/04 ,  C07H1/06 ,  C07H1/08

公开(公告)号：EP3988662A1

公开(公告)日：2022-04-27

申请号：EP21192331.3

申请日：2016-02-19

申请人： GranBio Intellectual Property Holdings, LLC

发明人： RETSINA, Theodora ,  PYLKKANEN, Vesa ,  RUTHERFORD, Steven ,  MONCLIN, Jean-Pierre

IPC分类号： C12P7/10 ,  C12P7/14 ,  D21C5/02 ,  C12P19/00 ,  C13K1/02

摘要： A low-cost process is provided to render lignocellulosic biomass accessible to cellulase enzymes, to produce fermentable sugars. Some variations provide a process to produce ethanol from lignocellulosic biomass (such as sugarcane bagasse or corn stover), comprising introducing a lignocellulosic biomass feedstock to a single-stage digestor; exposing the feedstock to a reaction solution comprising steam or liquid hot water within the digestor, to solubilize the hemicellulose in a liquid phase and to provide a cellulose-rich solid phase; refining the cellulose-rich solid phase, together with the liquid phase, in a mechanical refiner, thereby providing a mixture of refined cellulose-rich solids and the liquid phase; enzymatically hydrolyzing the mixture in a hydrolysis reactor with cellulase enzymes, to generate fermentable sugars; and fermenting the fermentable sugars to produce ethanol. Many alternative process configurations are described. The disclosed processes may be employed for other fermentation products.