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Innovative corn fractionation technologies enhance ethanol coproducts, improving nutritional value and creating new feed ingredients like bran cake. These advancements offer economic advantages for the animal feed industry.

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Area of Science:

  • Agricultural Science
  • Animal Nutrition
  • Biotechnology

Background:

  • Ethanol production generates valuable coproducts, with ongoing innovation to optimize their nutritional composition and efficiency.
  • Corn fractionation technologies are emerging to enhance the value and utility of coproducts like distillers dried grains with solubles (DDGS).

Purpose of the Study:

  • To explore innovative corn fractionation technologies for optimizing ethanol coproducts.
  • To evaluate the nutritional improvements and potential new feed products derived from corn fractionation.

Main Methods:

  • Development of wet and dry corn fractionation techniques to remove germ, pericarp fiber, or endosperm fiber before fermentation.
  • Implementation of post-fermentation oil removal (centrifugation or solvent extraction) and pericarp fiber recovery (sieving and aspiration).
  • Evaluation of a novel coproduct, bran cake, in beef finishing diets.

Main Results:

  • Fractionation significantly reduces DDGS yield while increasing its protein content.
  • New coproducts like bran cake (corn bran and distillers solubles) show promise.
  • Bran cake inclusion in finishing diets improved body weight gains and feed efficiency, with corn bran offering substantial energy value.

Conclusions:

  • Corn fractionation technologies offer a pathway to enhanced nutritional profiles and novel coproducts for the animal feed industry.
  • Economic viability will drive the adoption of these advanced milling and fractionation processes over traditional methods.