초록 ▼

A process for treating cellulosic materials to obtain glucose therefrom, which process includes an initial acid or base treatment of the cellulosic materials to remove hemicellulose, followed by a solvent treatment of the solid residue to dissolve the native cellulose contained therein. The dissolve

A process for treating cellulosic materials to obtain glucose therefrom, which process includes an initial acid or base treatment of the cellulosic materials to remove hemicellulose, followed by a solvent treatment of the solid residue to dissolve the native cellulose contained therein. The dissolved cellulose is separated from the solid lignin-containing residue, whereafter the cellulose is reprecipitated by contacting the solution thereof with water. The reprecipitated cellulose is hydrolyzed to glucose either by acid or enzyme hydrolysis. If desired, the cellulose may be reprecipitated and hydrolyzed in the presence of the lignin-containing solid, the latter being separated from the glucose.

대표청구항 ▼

A process for providing a yield of glucose from a cellulosic material, said process comprising: fractionating the cellulosic material into a solid cellulose-and lignin-containing fraction and a liquid fraction containing hemicellulose or C5 sugars derived therefrom; treating said solid cellulose- an

A process for providing a yield of glucose from a cellulosic material, said process comprising: fractionating the cellulosic material into a solid cellulose-and lignin-containing fraction and a liquid fraction containing hemicellulose or C5 sugars derived therefrom; treating said solid cellulose- and lignin-containing fraction with a solvent for cellulose to dissolve the cellulose in said fraction and to form a lignin-containing residue; reprecipitating the dissolved cellulose; and hydrolyzing the reprecipitated cellulose to yield glucose. *** BRS DOCUMENT BOUNDARY ***