where does ethanol come from
Ethanol can be fermented from many sources of starch, including corn, wheat, grain sorghum, barley, and potatoes, and from sugar crops such as sugar cane and sweet sorghum. Because there has been has been an abundant supply of corn, most of the ethanol made in the United States is from corn.ehicles do not need any modifications to use this blend of fuel. Flex fuel vehicles, which have modifications to the fuel systems, can use E85, which is a blend of up to 85 percent ethanol and 15 percent gasoline. With the modifications, these vehicles can use straight gasoline or any blend of ethanol up to 85 percent.