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AssigneesThe United States of America as represented by the Secretary of Agriculture, The Board of Trustees of the University of Illinois
InventorsDavid B. Johnston, Vijay Singh
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A process for recovering corn germ and corn coarse fiber from corn in a dry grind process, involving soaking corn kernels in water to produce soaked corn kernels, grinding the soaked corn kernels to produce a ground corn slurry, and incubating the ground corn slurry with at least one enzyme (amylase(s), protease(s), cell wall degrading enzyme(s), or mixtures thereof, and optionally other enzyme(s)) to increase the specific gravity of the slurry to about 10-about 16 Baume so that the corn germ and corn coarse fiber floats to the top of the slurry, recovering the corn germ and the corn coarse fiber, and optionally producing ethanol from the slurry no longer containing the corn germ and corn coarse fiber. The process does not involve the addition of starch, a salt, a sugar syrup, or mixtures thereof to the slurry.
A dry grind process for recovering corn germ and corn coarse fiber from corn, said dry grind process comprising soaking corn kernels in water to produce soaked corn kernels, grinding said soaked corn kernels to produce a ground corn slurry and incubating said ground corn slurry with at least one enzyme selected from the group consisting of amylases, proteases, cell wall degrading enzymes, and mixtures thereof, to increase the specific gravity of said slurry to about 10-about 16 Baume so that the corn germ and corn coarse fiber floats to the top of said slurry, recovering said corn germ and said corn coarse fiber, and optionally producing ethanol from the slurry no longer containing said corn germ and corn coarse fiber.
A dry grind process for recovering corn germ and corn coarse fiber from corn, said dry grind process comprising soaking corn kernels in water to produce soaked corn kernels, grinding said soaked corn kernels to produce a ground corn slurry, incubating said ground corn slurry with at least one enzyme selected from the group consisting of amylases, proteases, cell wall degrading enzymes, and mixtures thereof, to increase the specific gravity of said slurry to about 7-about 11 Baume so that the corn germ floats to the top of said slurry, recovering said corn germ, incubating said ground corn slurry no longer containing said corn germ with at least one enzyme selected from the group consisting of amylases, proteases, cell wall degrading enzymes, and mixtures thereof to increase the specific gravity of said slurry to about 11-about 16 Baume so that the corn coarse fiber floats to the top of said slurry, recovering said corn coarse fiber, and optionally producing ethanol from the slurry no longer containing said corn germ and corn coarse fiber.
A dry grind process for recovering corn germ from corn said dry grind process comprising soaking corn kernels in water to produce soaked corn kernels, grinding said soaked corn kernels to produce a ground corn slurry and incubating said ground corn slurry with at least one enzyme selected from the group consisting of amylases, proteases, cell wall degrading enzymes, and mixtures thereof to increase the specific gravity of said slurry to about 7-about 11 Baume so that the corn germ floats to the top of said slurry, recovering said corn germ, and optionally producing ethanol from the slurry no longer containing said corn germ.
Dependencies are inferred from the claim text.