Combined dry-wet milling process for refining corn

Details Combined dry-wet milling process for refining corn Combined dry-wet milling process for refining corn

A - Human Necessities

23

K

241/132, 99/24.3

A23K 1/18 (2006.01) A23J 1/12 (2006.01) A23K 1/14 (2006.01) C08B 30/04 (2006.01)

Patent

CA 1117353

ABSTRACT OF THE DISCLOSURE There is disclosed 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 clean- ings 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 tail- ings 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.

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