Process for degrading mannan-containing cellulosic materials
AssigneeNovozymes A/S
InventorsHarry Showmaker, Laerke Tvedebrink Haahr, Kristian Bertel Romer M. Krogh, Johan Belfrage, Lone Baekgaard, Armindo Ribiero Gaspar, Claudia Geddes
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Abstract
The present invention relates to processes comprising enzymatic degradation of mannan-containing cellulosic materials for producing a hydrolyzate. The invention also relates to processes of producing a fermentation product from mannan-containing cellulosic materials.
Claims12
A process for degrading a mannan-containing cellulosic material, comprising:
- treating the mannan-containing cellulosic material with an enzyme composition comprising one or more cellulases and at least one mannanase at a temperature in the range from 30° C. to 65° C., wherein the mannanase comprises SEQ ID NO:
- 34 or the mannanase comprises an amino acid sequence having at least 90% sequence identity to SEQ ID NO:
- 34.
A process for producing a fermentation product, comprising:
- (a) saccharifying a mannan-containing cellulosic material with an enzyme composition comprising one or more cellulases and at least one mannanase at a temperature in the range from 30° C. to 65° C., wherein the mannanase comprises SEQ ID NO:
- 34 or the mannanase comprises an amino acid sequence having at least 90% sequence identity to SEQ ID NO:
- 34;
- (b) fermenting the saccharified mannan-containing cellulosic material with a fermenting microorganism to produce the fermentation product;
- and
- (c) recovering the fermentation product from the fermentation.
A process for producing a fermentation product, the process comprising (a) contacting an aqueous slurry of a mannan-containing cellulosic material with an enzyme composition to produce a soluble hydrolyzate, wherein the enzyme composition comprises one or more cellulases and at least one mannanase at a temperature in the range from 30° C. to 65° C., wherein the mannanase comprises SEQ ID NO:
- 34 or the mannanase comprises an amino acid sequence having at least 90% sequence identity to SEQ ID NO:
- 34;
- and
- (b) contacting the soluble hydrolyzate with a fermenting organism to produce a fermentation product.
Dependencies are inferred from the claim text.