A report that contains new recommendations for the analysis of distillers dried grains with solubles is now available.

The report is the result of a year-long study funded jointly by the National Corn Growers Association, the Renewable Fuels Association and the American Feed Industry Association.

The report offers recommended testing methods for determining the moisture, crude protein, crude fat and crude fiber content of distillers dried grains with solubles.

Historically, different analytical methods have been used to test distillers dried grains with solubles. This can cause analytical results to vary significantly between laboratories. “That variance can cause significant challenges for the parties involved in the trade of the product and it inflates the perception that DDGS is an inconsistent product,” said Bruce Noel, chair of the National Corn Growers Association Ethanol Committee.

For example, when five different moisture testing methods were used during the study’s intralaboratory analysis, moisture values of the same dried distillers sample ranged from 9.03 percent to 12.69 percent.

Widespread voluntary adoption of the new recommended testing methods could reduce variation in laboratory-analytical methods and increase product certainty for end-users of dried distillers.

To access the full report, go to: http://www.ncga.com/ethanol/pdfs/2007/DDGSFINALReportRecommendations0207.pdf

National Corn Growers Association