The refining step is actually the mechanical removal of the nonbran components (tip cap, germ, endosperm) that might adhere to the bran pieces. The net result of this refining, or concentrating, step is a corn bran product relatively low in corn oil, protein, ash, and starch and high in total dietary fiber (TDF).
How is corn oil produced?
More details on corn oil production are contained inSection 9.11.1, "Vegetable Oil Processing". The product slurry passes through a series of washing, grinding, and screening operations toseparate the starch andgluten from the fibrous material. The hulls are discharged to the feed house,where they are dried for use in animal feeds.
What is a corn milling process?
The actual milling process is usually preceded by a rigorous mechanical cleaning of the corn kernels.
Can dry-milled corn be used in ethanol production?
Although whole corn is typically utilized, dry-milled corn products could also be used in ethanol production, either potable or industrial (see Chapter 22 ). This application could be helpful in addressing mill balance issues, and it would provide a ready outlet for off-quality milled products as well as rejected truckloads of corn.