PROCESS OF PRODUCING A FERMENTATION PRODUCT

• US 20100151549A1
• Filed: 10/16/2009
• Published: 06/17/2010
• Est. Priority Date: 05/13/2004
• Status: Abandoned Application

• Current Assignee: Novozymes A/S (Novozymes), Novozymes North America Incorporated (Novozymes)
• Original Assignee: Novozymes A/S (Novozymes), Novozymes North America Incorporated (Novozymes)
• Inventors: Frisner, Henrik, Bhargava, Swapnil, Tams, Jeppe Wegener, Bisgard-Frantzen, Henrik
• Application Number:
  US12/581,076
• Publication Number:
  US 20100151549A1
• Time in Patent Office: Days
• US Class Current: 435/161
• CPC Class Codes: C12P 19/14 produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase , e.g. by cellulase, hemicellulase
• CPC Class Codes: C12P 7/10 substrate containing cellulosic material
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel

Abstract

The invention relates to a process of producing a fermentation product, such as ethanol, from starch-containing material, including i) subjecting starch-containing material to an alpha-amylase, ii) subjecting the material obtained in step i) to an alpha-glucosidase and/or a maltose-generating enzyme, and iii) fermenting the material in the presence of a fermenting organism, such as yeast. Alternatively the invention relates to a process of producing a fermentation product from starch-containing material, preferably granular starch, which process comprises: a) subjecting starch-containing material to an alpha-glucosidase and optionally a glucose-generating and/or maltose-generating enzyme, and b) fermenting the material in the presence of a fermenting organism.

Claims

1-57. -57. (canceled)

58. A fermentation product from a fuel ethanol production process in which a starch-containing plant material has been subjected to an enzyme mixture which product comprises ethanol and residual plant material, wherein the plant material comprises raw granular starch having a gelatinization temperature, wherein the process comprises treatment of the raw starch at a temperature below the gelatinization temperature, and wherein the enzyme mixture comprises an alpha-amylase, a glucoamylase and an alpha-glucosidase.

59. The fermentation product of claim 58 wherein the plant material is corn.

60. The fermentation product of claim 58 wherein the ethanol production process comprises a saccharification step and a fermentation step and the saccharification step is in the presence of an effective amount of enzyme mixture.

61. The fermentation product of claim 58 wherein the ethanol production process comprises a simultaneously-performed saccharification step and fermentation step.

62. The fermentation product of claim 61 wherein the fermentation step is in the presence of a fermenting organism and the product comprises the fermenting organism.

63. The fermentation product of claim 58 wherein the process is a batch process.

64. The fermentation product of claim 63 wherein the saccharification steps lasts up to 72 hours.

65. The fermentation product of claim 62 wherein the fermenting organism comprises yeast.

66. The fermentation product of claim 58 wherein the fermentation product comprises mash.

67. The fermentation product of claim 58 wherein the fermentation product further comprises fermented mash.

68. The fermentation product of claim 58 which further comprises wet grain.

69. The fermentation product of claim 58 wherein the residual plant material comprises wet grain.

70. The fermentation product of claim 58 wherein the residual plant material comprises distillers dried grains.

71. The fermentation product of claim 58 which further comprises syrup.

72. A fermentation product from a fuel ethanol production process in which a starch-containing plant material has been subjected to an enzyme mixture which product comprises distillers dry grains, wherein the plant material comprises raw granular starch having a gelatinization temperature, wherein the process comprises treatment of the raw starch at a temperature below the gelatinization temperature, and wherein the enzyme mixture comprises an alpha-amylase, a glucoamylase and an alpha-glucosidase.

73. A fermentation product from a fuel ethanol production process in which a starch-containing plant material has been subjected to an enzyme mixture which product comprises ethanol, residual plant material and enzyme mixture, wherein the enzyme mixture comprises active endogenous plant alpha-glucosidase and exogenous alpha-glucosidase.

74. The fermentation product of claim 73 wherein the enzyme mixture further comprises alpha-amylase.

75. The fermentation product of claim 74 wherein the enzyme mixture further comprises glucoamylase.

76. The fermentation product of claim 75 wherein the enzyme mixture further comprises a raw-starch-degrading glucoamylase.