公开(公告)号：US20150184259A1

公开(公告)日：2015-07-02

申请号：US14583566

申请日：2014-12-26

Applicant: API Intellectual Property Holdings, LLC

Inventor： Ryan ZEBROSKI ,  James SCHULTZE

IPC: C13K1/02 ,  C12P19/02 ,  C13K1/04 ,  C12P7/10 ,  C12P19/14

CPC classification number: C13K1/02 ,  C12P7/10 ,  C12P19/02 ,  C12P19/14 ,  C12P2201/00 ,  C13K1/04 ,  Y02E50/16

Abstract: The present invention is capable of producing glucose and hemicellulose sugars from lignocellulosic biomass. In some variations, a process includes optionally pre-steaming a biomass feedstock; extracting the feedstock with liquid hot water to produce glucan-rich solids and an extract liquor containing dissolved solids, which include hemicellulosic oligomers and lignin; washing the glucan-rich solids; hydrolyzing the hemicellulosic oligomers by contacting the extract liquor with an acid catalyst or enzymes possessing hemicellulase activity; separately hydrolyzing the glucan by contacting the glucan-rich solids stream with an acid catalyst or enzymes possessing glucanase activity, optionally with removing the glucose in situ by microfiltration and/or ultrafiltration; and recovering or fermenting each of the hemicellulosic monomers and the glucose. Preferred configurations and conditions are disclosed.

Abstract translation: 本发明能够从木质纤维素生物质生产葡萄糖和半纤维素糖。 在一些变型中，方法包括任选地预蒸汽生物质原料; 用液体热水提取原料以产生富含葡聚糖的固体，以及含有溶解的固体的提取液，包括半纤维素低聚物和木质素; 洗涤富含葡聚糖的固体; 通过使萃取液与酸催化剂或具有半纤维素酶活性的酶接触来水解半纤维素低聚物; 通过使富含葡聚糖的固体物流与酸催化剂或具有葡聚糖酶活性的酶接触来分别水解葡聚糖，任选地通过微量过滤和/或超滤原位除去葡萄糖; 并回收或发酵每种半纤维素单体和葡萄糖。 公开了优选的配置和条件。