2013 Ethanol Coproduct Survey

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Common and official coproduct names and definitions

Common Acronym

Official Name

Official Definition for Trade

DDGS

Corn Distillers Dried Grains with Solubles

"Is the product obtained after the removal of ethyl alcohol by distillation from the yeast fermentation of a grain or a grain mixture by condensing and drying at least ¾ of the solids of the resultant whole stillage by methods employed in the grain distilling industry. The predominating grain shall be declared as the first word in the name."

DDG

Corn Distillers Dried Grains

"Is obtained after the removal of ethyl alcohol by distillation from the yeast fermentation of a grain or a grain mixture by separating the resulting coarse grain fraction of the whole stillage and drying it by methods employed in the grain distilling industry. The predominating grain shall be declared as the first word in the name."

DWG
(or WDG)

Distillers Wet Grains

"Is the product obtained after the removal of ethyl alcohol by distillation from the yeast fermentation of a grain mixture. The guaranteed analysis shall include the maximum moisture."

CDS
(syrup)

Corn Condensed Distillers Solubles

"Is obtained after the removal of ethyl alcohol by distillation from the yeast fermentation of a grain or a grain mixture by condensing the thin stillage fraction to a semi-solid. The predominating grain must be declared as the first word in the name."

DDS

Corn Distillers Dried Solubles

"Is obtained after the removal of ethyl alcohol by distillation from the yeast fermentation of a grain mixture by condensing the thin stillage fraction and drying it by methods employed in the grain distilling industry. The predominating grain must be declared as the first word in the name."

The following coproducts have not yet been assigned an official abbreviation or definition by AAFCO:

Reduced-fat DDGS

Similar to DDGS, but a portion of the corn oil has been separated from the stillage prior to condensing into CDS, which is then mixed with DWG and dried.

DWG

Reduced-fat Distillers Wet Grans

HPDDGS

High-protein DDGS

Similar to DDGS, but fractionation methods have been used at the ethanol plant to achieve significantly higher protein content.

MDWG

Modified Distillers Wet Grains

Similar to DWG, but partially dried DDGS is mixed with the DWG and syrup to achieve final moisture content between 45% and 55% (instead of 65% to 70%, which is typical for DWG).

MDWG

Reduced-fat Modified Distillers Wet Grains


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