System and method for separating high value by-products from grains used for alcohol production
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United States of America Patent
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Aug 15, 2017
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N/A
app pub date -
Dec 5, 2011
filing date -
Dec 3, 2010
priority date (Note) -
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Abstract
Systems and methods are provided for separating high value by-products, such as oil and/or germ, from grains used for alcohol production. In one embodiment, a method for separating by-products from grains used for alcohol production includes, subjecting milled grains to liquefaction to provide a liquefied starch solution including fiber, protein, and germ. The germ is separated from the liquefied starch solution. The separated germ is ground, e.g., to a particle size less than 50 microns, to release oil to provide a germ/oil mixture. Then, prior to fermentation, the oil is separated from the germ/oil mixture to yield an oil by-product. The pH of the germ/oil mixture can be adjusted to about 8 to about 10.5 and/or cell wall breaking enzymes or chemicals may be added to help release oil from the germ. In one example, the oil yield is greater than 1.0 lb/Bu.
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International Classification(s)
- C11B:PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EX....
- C12P:FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESI....
- C12M:APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY
- A23J:PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PR....
- A23K:FODDER
- C12F:RECOVERY OF BY- PRODUCTS OF FERMENTED SOLUTIONS; D....
- B01D:SEPARATION
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