Fermentable sugar from the hydrolysis of carbohydrate polymer
First Claim
1. In the acid hydrolysis of carbohydrate polymer in which an aqueous slurry of carbohydrate polymer selected from the group consisting of starch and cellulose is hydrolyzed at elevated pressure and temperature in the presence of an acid catalyst to provide a hydrolysate comprising a sterile aqueous solution of fermentable sugar, the improvement which comprises carrying out hydrolysis in the presence of added aqueous water soluble non-fermentable carbohydrate.
1 Assignment
0 Petitions
Accused Products
Abstract
The yield of fermentable sugar, largely glucose (dextrose), resulting from the acid catalyzed hydrolysis of a carbohydrate polymer such as starch or cellulose can be significantly increased by the addition to the hydrolysate under acid hydrolysis conditions of water soluble non-fermentable carbohydrate such as stillage recovered from a downstream ethanol distillation facility.
-
Citations
9 Claims
- 1. In the acid hydrolysis of carbohydrate polymer in which an aqueous slurry of carbohydrate polymer selected from the group consisting of starch and cellulose is hydrolyzed at elevated pressure and temperature in the presence of an acid catalyst to provide a hydrolysate comprising a sterile aqueous solution of fermentable sugar, the improvement which comprises carrying out hydrolysis in the presence of added aqueous water soluble non-fermentable carbohydrate.
Specification