Seems that the use of corn for ethanol feedstock makes all the more sense.
"Corn wet milling - The process of chemically or biochemically separating corn into chemical components using water, grinding, and centrifugation. The most important separation is between the endosperm starch and protein. Primary products of wet milling include starch, gluten meal, gluten feed, and oil. Starch can be further processed into high fructose corn syrup, glucose, fructose, ethanol and other products"
Mmmm. Sounds yummy.