초록 ▼

A method of producing sugars and converting the sugars to ethanol in which particulate biomass resulting from hydrolysis of the hemicellulosic content of the biomass is subjected to enzymatic hydrolysis of the cellulosic content to glucose and fermentation of the glucose to ethanol. The particulate

A method of producing sugars and converting the sugars to ethanol in which particulate biomass resulting from hydrolysis of the hemicellulosic content of the biomass is subjected to enzymatic hydrolysis of the cellulosic content to glucose and fermentation of the glucose to ethanol. The particulate biomass resulting from hydrolysis of the hemicellulosic content of the feed stock is reduced to very fine particle size before enzymatic hydrolysis. The hydrolysis of cellulose and the fermentation of the resulting glucose may be carried out separately or they may be carried out simultaneously. The pentoses and hexoses resulting from hydrolysis of the hemicellulose may be subjected to fermentation separately to produce ethanol or they may be fermented simultaneously with the fermentation of the glucose derived from the cellulose.

대표청구항 ▼

A method of hydrolysis of biomass material containing hemicellulosic, cellulosic and ligneous components which comprises subjecting the biomass material to hydrolysis under conditions to hydrolyze the hemicellulose content without substantial hydrolysis of the cellulosic content, then subjecting res

A method of hydrolysis of biomass material containing hemicellulosic, cellulosic and ligneous components which comprises subjecting the biomass material to hydrolysis under conditions to hydrolyze the hemicellulose content without substantial hydrolysis of the cellulosic content, then subjecting residual solid biomass in finely divided particulate form to enzymatic hydrolysis to convert the cellulose to glucose.