Patent ID: 9150936
Filing Date: 2015-10-06
Classification: C12P,C13K,Y02E

Abstract:
1. In a process for C5 and C6 sugar recovery from lignocellulosic biomass for fermentation to ethanol, including the steps of pretreatment of the biomass with steam at elevated temperature and pressure, collection of C5 sugars from hemicellulose breakdown, cellulose hydrolysis and collection of C6 sugars from cellulose breakdown, the improvement comprising conditioning of the biomass prior to the pretreatment step by: heating the biomass with steam for a time period between 5 minutes to 60 minutes to achieve a steam treated biomass having a temperature of about 80 to 100° C.; and adjusting a moisture content of the steam treated biomass to about 45% to 80% by weight.