Patent ID: 8367378

Claim:
A process for producing sugars from a lignocellulosic material and corn comprising: pretreating the lignocellulosic material with an ammonia treatment process to produce a pretreated lignocellulosic material, wherein ammonia in the ammonia pretreatment process is present in a concentration ranging from about 0.2 to about 4 grams ammonia per gram of the lignocellulosic material; separating corn grain stillage into a substantially liquid fraction comprising about 0.05 wt. % to about 50 wt. % crude protein and a substantially solid fraction; adding the substantially liquid fraction to the pretreated lignocellulosic material; and hydrolyzing complex carbohydrates in the pretreated lignocellulosic material in an aqueous medium with one or more hydrolyzing enzymes to form the sugars, wherein the substantially liquid fraction comprises some or all of the aqueous medium.