Corn oil and protein extraction method
First Claim
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1. A corn product removal process, the process comprising steps of:
- extracting oils and proteins from corn using ethanol;
separating corn solids from an extraction solution that contains oils and zein protein produced in said step of extraction;
membrane filtering said extraction solution to restrain zein from said mixture and pass the oil and ethanol mixture;
membrane filtering said oil and ethanol mixture to restrain oil and pass ethanol;
selecting at least one of zein or oil separated in said membrane filtering steps for an output corn product.
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Abstract
The invention is a corn product removal process that successfully extracts oil and zein from dry-milled corn. Oils and zein are extracted from corn using ethanol. Corn solids are separated from the ethanol, oil and zein mixture produced in the step of extracting. Thereafter, the ethanol, oil and zein mixture are membrane filtered to restrain zein from the mixture and pass an oil and ethanol mixture. At least one of zein or oil is then selected to be separated for an output corn product.
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Citations
15 Claims
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1. A corn product removal process, the process comprising steps of:
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extracting oils and proteins from corn using ethanol;
separating corn solids from an extraction solution that contains oils and zein protein produced in said step of extraction;
membrane filtering said extraction solution to restrain zein from said mixture and pass the oil and ethanol mixture;
membrane filtering said oil and ethanol mixture to restrain oil and pass ethanol;
selecting at least one of zein or oil separated in said membrane filtering steps for an output corn product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A corn product removal process, the process comprising steps of:
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obtaining an oil, zein and ethanol mixture free of other corn solids from a corn input;
membrane filtering to obtain one of an oil or zein concentrate from said oil, zein and ethanol mixture.
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Specification