Distillers Dried Grains with Solubles

Brief Overview
Distillers Dried Grains with Solubles (DDGS) is the most common coproduct from many ethanol plants. It is typically dried to about 10% moisture content, to ensure a long shelf life and to reduce flowability issues during storage and transport. It can be transported by truck, rail, and boat to local livestock producers, throughout the country, or even to overseas markets. DDGS has increasingly been exported to globally in recent years.
Manufacturing Process
DDGS is by-product of ethanol manufacturing process. The ground grains are mixed with water and enzymes to produce dextrose, this process is called saccharification. After saccharification, yeast is added to start the fermentation process, which produces alcohol and CO2. The alcohol passes through a continuous distillation process to yield ethanol and the by-product called whole stillage is separated using centrifuge. The supernatan that has been dried is called DDGS.