Corn wet milling process
First Claim
1. A process comprising:
- steeping corn kernels in an aqueous liquid, producing softened corn;
milling the softened corn in a first mill, producing a first milled corn;
separating germ from the first milled corn, producing a germ-depleted first milled corn;
milling the germ-depleted first milled corn in a second mill, producing a second milled corn;
separating the second milled corn into a first starch/protein portion that comprises starch and protein and a first fiber portion that comprises fiber, starch, and protein;
milling the first fiber portion in a third mill, producing a milled fiber material that comprises fiber, starch, and protein;
separating at least some of the starch and protein from the fiber in the milled fiber material, producing a second fiber portion that comprises fiber and starch and a second starch/protein portion that comprises starch and protein; and
contacting the second fiber portion with at least one enzyme to convert at least some of the starch therein to dextrose.
1 Assignment
0 Petitions
Accused Products
Abstract
A corn wet-milling process comprises steeping corn kernels in an aqueous liquid, which produces softened corn; milling the softened corn in a first mill, which produces a first milled corn; separating germ from the first milled corn, thereby producing a germ-depleted first milled corn; milling the germ-depleted first milled corn in a second mill, producing a second milled corn; separating the second milled corn into a first starch/protein portion that comprises starch and protein and a first fiber portion that comprises fiber, starch, and protein; milling the first fiber portion in a third mill, which produces a milled fiber material that comprises fiber, starch, and protein; separating at least some of the starch and protein in the milled fiber material from the fiber therein, producing a second fiber portion that comprises fiber and starch and a second starch/protein portion that comprises starch and protein; and contacting the second fiber portion with at least one enzyme to convert at least some of the starch therein to dextrose. The converted material is screened using one or more screens to separate the fiber from the liquor. The liquor can be fermented to ethanol, or refined to dextrose. The fiber can be pressed and dried as an animal feed.
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Citations
17 Claims
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1. A process comprising:
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steeping corn kernels in an aqueous liquid, producing softened corn;
milling the softened corn in a first mill, producing a first milled corn;
separating germ from the first milled corn, producing a germ-depleted first milled corn;
milling the germ-depleted first milled corn in a second mill, producing a second milled corn;
separating the second milled corn into a first starch/protein portion that comprises starch and protein and a first fiber portion that comprises fiber, starch, and protein;
milling the first fiber portion in a third mill, producing a milled fiber material that comprises fiber, starch, and protein;
separating at least some of the starch and protein from the fiber in the milled fiber material, producing a second fiber portion that comprises fiber and starch and a second starch/protein portion that comprises starch and protein; and
contacting the second fiber portion with at least one enzyme to convert at least some of the starch therein to dextrose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A process comprising:
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steeping corn kernels in an aqueous liquid, producing softened corn;
milling the softened corn in a first mill, producing a first milled corn;
separating germ from the first milled corn, producing a germ-depleted first milled corn;
milling the germ-depleted first milled corn in a second mill, producing a second milled corn;
separating the second milled corn into a first starch/protein portion that comprises starch and protein and a first fiber portion that comprises fiber, starch, and protein;
milling the first fiber portion in a third mill, producing a milled fiber material that comprises fiber, starch, and protein; and
contacting the milled fiber material with at least one enzyme to convert at least some of the starch therein to dextrose. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification