METHODS AND SYSTEMS FOR PRODUCING ETHANOL USING RAW STARCH AND FRACTIONATION

• US 20110111085A1
• Filed: 11/11/2010
• Published: 05/12/2011
• Est. Priority Date: 03/10/2003
• Status: Active Grant

• Current Assignee: Poet Research Inc.
• Original Assignee: Poet Research Inc.
• Inventors: Lewis, Stephen M., Van Hulzen, Shon Erron
• Granted Patent: US 8,409,639 B2
• Time in Patent Office: Days
• US Class Current: 426/11
• CPC Class Codes: C12C 12/00 Processes specially adapted for making special kinds of beer
• CPC Class Codes: C12C 12/006 Yeasts processes for seeding C12C11/02
• 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 7/06 Ethanol, i.e. non-beverage
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel

Abstract

The present invention relates to methods for producing high levels of alcohol during fermentation of plant material, and to the high alcohol beer produced. The method can include fractionating the plant material. The present invention also relates to methods for producing high protein distiller'"'"'s dried grain from fermentation of plant material, and to the high protein distiller'"'"'s dried grain produced. The method can include drying a co-product by ring drying, flash drying, or fluid bed drying. The present invention further relates to reduced stack emissions from drying distillation products from the production of ethanol.

Claims

1. A fermentation method comprising

fractionating plant material into components including fiber, germ and endosperm;

separating the germ and fiber components of the fractionated plant material to form a remaining portion which includes the endosperm;

reducing the remaining portion in particle size to form a reduced portion; and

fermenting the reduced portion in a reaction mixture under acidic conditions to form a liquid comprising ethanol and a solid material, wherein the reaction mixture comprises acid stable fungal alpha amylase and yeast.

2-39. -39. (canceled)