Distillers Dried Grains
Distillers dried grains (DDG) obtained as a co-product of the dry-mill corn ethanol process. Solubles-free variant, for animal nutrition.
DDG (Distillers Dried Grains) is the dried corn distillers grain that remains as a solid co-product after fermentation and distillation of the grain for bioethanol production. The raw material is corn, and the general composition of the product includes protein, oils, fibres, minerals, vitamins and water, in proportions concentrated relative to the original grain.
Unlike DDGS, DDG is sold without the reincorporation of solubles (the liquid fraction of the distillate), delivering a more standardised product with lower analytical variability between lots. The content of fibres, protein, ether extract and ash is concentrated 2.2 to 3 times relative to the original corn, with protein around 30% on a dry basis.
1. Milling and ethanol conversion. Corn is dry-milled and goes through liquefaction, fermentation and distillation stages. By means of enzymes and yeasts, the grain's starches are converted into fermentable sugars and then into ethanol, which is removed in the distillation stage.
2. Mash centrifugation. Once the ethanol is removed, the remaining mash is centrifuged, yielding on one side wet distillers grains (WDG) and on the other a liquid fraction called corn distillate (stillage), which is partially recirculated to the process.
3. Drying to DDG. The wet distillers grains pass through drying ovens where, by indirect heat, their moisture is reduced below 10%, producing the DDG. The final product is shipped in bulk for animal nutrition, as a perishable product suitable for use as organic fertiliser in case of degradation.
High-density protein and energy source for feedlot finishing rations. Fibre, protein and ether extract concentrated 2.2 to 3 times relative to the original corn make it an efficient co-product to partially replace grain and soybean meal.
Protein ingredient (> 31% dry basis) and source of metabolisable energy (2 – 5 Mcal/kg) for lactating dairy cows. The solubles-free variant offers lower analytical variability versus DDGS, simplifying balanced ration formulation.
Partial inclusion in broiler and layer rations as a complementary protein contribution. DDG's dry, uniform texture makes it easy to blend in feed mills.
Co-product used in finishing swine rations, where its protein-energy profile and phosphorus availability (3,500 – 4,500 mg/kg dry basis) replace part of the inorganic phosphate in the diet.
Typical values from the current technical data sheet. Perishable product: in case of degradation, dispose of appropriately in the field as organic fertiliser. Shipment-specific values are provided with dispatch documentation.
| Parameter | Value | Method |
|---|---|---|
| Dry matter | ≥ 90% | AOAC 925.10 |
| Moisture | ≤ 10% | AOAC 925.10 |
| Protein (dry basis) | > 31% | AOAC 990.03 |
| Fat (dry basis) | 6 – 10% | AOAC 920.39 |
| Crude fibre (dry basis) | 9 – 15% | AOAC 962.09 |
| Metabolisable energy | 2 – 5 Mcal/kg | NRC (calc.) |
| Calcium (dry basis) | 150 – 500 mg/kg | AOAC 968.08 |
| Phosphorus (dry basis) | 3.500 – 4.500 mg/kg | AOAC 965.17 |
Tell us what you need (technical sheet, physical sample, formal quote) and our sales team gets back to you within 24 business hours.
High-yield, cost-efficient vegetable protein source. By-product of the corn ethanol industry.
Logistics management and long-term contracts for the advanced biofuels industry and industrial processes.
We act as a solutions integrator bridging primary production and the technical needs of global markets. Tell us the product, volume and destination — we'll come back with a tailored proposal.
