Each stainless steel steep tank holds about 3,000 bushels of corn for 30 to 40 hours of soaking in 50 degree Celsius water. During steeping, the kernels absorb water, increasing their moisture levels from 15 percent to 45 percent and more than doubling in size.
The addition of 0.1 percent sulfur dioxide to the water prevents excessive bacterial growth in the warm environment. As the corn swells and softens, the mild acidity of the steepwater begins to loosen the gluten bonds within the corn and release the starch. After steeping, the corn is coarsely ground to break the germ loose from other components. Steepwater is condensed to capture nutrients in the water for use in animal feeds and for a nutrient for later fermentation processes. The ground corn, in a water slurry, flows to the germ separators.
- CRA Supports the Formation of the U.S. Agriculture Coalition for Cuba January 8, 2015
- Statement by the Corn Refiners Association on the recent University of Utah Study on the Effects of Fructose Consumption on Female Mice January 5, 2015
- Statement by the Corn Refiners Association on the Recent Article in the Journal Open Heart on the Effects of Sugar Consumption on Cardiometabolic Disease December 15, 2014
- Corn Refiners Association Praises EPA Decision on TSCA Exemptions December 12, 2014
- Statement by the Corn Refiners Association on the recent University of Southern California Study On the Effects of Fructose and Glucose on Brain Activity December 10, 2014