Combined dry-wet milling process for refining corn
US4181748A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | May 11, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/87
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
A continuous process for refining whole grain corn to obtain a prime corn starch fraction, an animal feed product and, optionally, corn oil. The process comprises dry milling corn kernels to provide an endosperm fraction, a germ fraction, a fiber (hull) fraction and a cleanings fraction, wet milling the endosperm fraction including using two distinct steeping steps, one upstream and the other downstream of an impact milling step, to provide a mill starch slurry. The process further comprises removing fine fiber tailings from the mill starch slurry, separating the slurry into a starch-rich fraction and protein-rich fraction, concentrating the protein-rich fraction, directly combining the fiber (hull), cleanings, fine fiber tailings and protein-rich concentrate without removing corn oil therefrom, with the germ fraction to provide a wet animal feed product, and drying the feed product. Optionally, corn oil is recovered from the germ fraction only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.