Enzymatic Hydrolysis Of Pretreated Lignocellulose-Containing Material With Distillers Dried Grains

• US 20110165617A1
• Filed: 09/30/2009
• Published: 07/07/2011
• Est. Priority Date: 09/30/2008
• Status: Abandoned Application

• Current Assignee: Novozymes North America Incorporated (Novozymes)
• Original Assignee: Novozymes North America Incorporated (Novozymes)
• Inventors: Haagensen, Frank Droescher, Li, Xin
• Application Number:
  US13/063,064
• Publication Number:
  US 20110165617A1
• Time in Patent Office: Days
• US Class Current: 435/41
• CPC Class Codes: C12P 7/00 Preparation of oxygen-containing organic compounds
• CPC Class Codes: Y02E 50/30 Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

A method for producing a fermentation product from a lignocellulose-containing material comprises combining lignocellulose-containing material and distillers dried grains with or without solubles (DDG/S); pre-treating the combined ligno-cellulose-containing material and DDG/S; exposing the pre-treated combined lignocellulose-containing material and DDG/S to an effective amount of hydrolyzing enzyme; and fermenting with a fermenting organism to produce a fermentation product.

Claims

1-15. -15. (canceled)

16. A method for producing a fermentation product from a lignocellulose-containing material, comprising:

(a) combining lignocellulose-containing material and distillers dried grains with solubles (DDG/S);

(b) pre-treating the combined lignocellulose-containing material and DDG/S;

(c) exposing the pre-treated combined lignocellulose-containing material and DDG/S to one or more hydrolyzing enzymes; and

(d) fermenting with a fermenting organism to produce a fermentation product.

17. The method of claim 16, wherein the DDG/S are introduced to the lignocellulose-containing material in an amount of 4-48% w/w DDG/S/lignocellulose-containing material.

18. The method of claim 16, wherein the DDG/S are introduced to the lignocellulose-containing material in an amount of about 16% w/w DDG/S/dry lignocellulose-containing material.

19. The method of claim 16, wherein the pre-treatment of the combined lignocellulose-containing material and DDG/S comprises acid pre-treatment.

20. The method of claim 19, wherein the pre-treatment of the combined lignocellulose-containing material and DDG/S further comprises heat treatment.

21. The method of claim 16, wherein the lignocellulose-containing material is selected from the group consisting of bagasse, corn cobs, corn fiber, corn stover, rice straw, switch grass, and wheat straw.

22. A method for enhancing enzymatic hydrolysis of a lignocellulose-containing material, comprising:

(a) introducing an effective lignin-blocking amount of DDG/S to the lignocellulose-containing material prior to pre-treatment, and

(b) exposing the pre-treated lignocellulose-containing material and DDG/S to one or more hydrolyzing enzymes.

23. The method of claim 22, wherein the DDG/S are introduced to the lignocellulose-containing material in an amount of 4-48% w/w DDG/S/lignocellulose-containing material.

24. The method of claim 22, wherein the DDG/S are introduced to the lignocellulose-containing material in an amount of about 16% w/w DDG/S/lignocellulose-containing material.

25. The method of claim 22, wherein the lignocellulose-containing material is selected from bagasse, corn cobs, corn fiber, corn stover, rice straw, switch grass, and wheat straw.

26. A method of reducing the detrimental effect of lignin on hydrolysis of lignocellulose-containing material comprising adding DDG/S to the lignocellulose-containing material prior to pre-treating the lignocellulose-containing material.

27. The method of claim 26, wherein the DDG/S are introduced to the lignocellulose-containing material in an amount of 4-48% w/w DDG/S/lignocellulose-containing material.

28. The method of claim 26, wherein the DDG/S are introduced to the lignocellulose-containing material in an amount of about 16% w/w DDG/S/lignocellulose-containing material.

29. The method of claim 26, wherein the lignocellulose-containing material is selected from the group consisting of bagasse, corn cobs, corn fiber, corn stover, rice straw, switch grass, and wheat straw.