The increasing use of ethanol as a fuel source has led to a corresponding increase in the generation of distillers dried grains with solubles (DDGS). Corn-based DDGS contain a relatively large concentration of proteins (about 30%). Zein, the predominant protein found in corn, has many potential commercial uses, particularly in bio-based polymers. The standard method of zein extraction from DDGS uses 70% ethanol as the extraction solvent. We have developed a new method for extraction of zein from DDGS which does not involve the use of flammable solvents. The advantages and disadvantages of our new method, as well as a comparison to the standard ethanol extraction will be presented.

Exploring new methods for extracting zein from corn

243rd National Meeting (2012)

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