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ARS Home » Plains Area » Brookings, South Dakota » Integrated Cropping Systems Research » Research » Publications at this Location » Publication #212338
Title: Characterization of Chemical and Physical Properties of Distillers Dried Grains with Solubles (DDSG) for Value Added Uses

Author
item BHADRA, RUMELA - SOUTH DAKOTA STATE UNIV
item MUTHUKUMARAPPAN, K - SOUTH DAKOTA STATE UNIV
item Rosentrater, Kurt

Submitted to: Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 6/12/2007
Publication Date: 6/19/2007
Citation: Bhadra, R., Muthukumarappan, K., Rosentrater, K.A. 2007. Characterization of Chemical and Physical Properties of Distillers Dried Grains with Solubles (DDSG) for Value Added Uses. 2007 ASABE Annual International Meeting, Minneapolis MN, June 17-20, 2007. Available online: www.asabe.org.

Interpretive Summary:

Technical Abstract: One of the fastest growing industries in the United States is the fuel ethanol industry. Since 2000 there has been an increase of more than 300%. There was production of 4.9 billion gallons of ethanol in the year 2006. The major coproducts from this industry include Distillers Dried Grains with Solubles (DDGS) and carbon dioxide. DDGS is used as a livestock feed since it contains high quantities of protein, fiber, amino acids, and other nutrients. The goal of this study was to quantify various chemical and physical properties of DDGS, Distillers Wet Grains (DWG), and Distillers Dried Grain with no Solubles (DDG) from several plants in South Dakota during fall and winter 2006-2007. Key chemical properties included crude ash, Neutral Detergent Fiber (NDF), Acid Detergent Fiber (ADF), crude fiber (CF), crude protein, crude fat and total starch content in each of the samples. Essential physical properties included moisture content, water activity, bulk density, thermal properties, color (L*, a*, b*) and angle of repose. We also conducted image analysis and particle size determination of the DDGS. The carbon groups in the DDGS samples were determined using NMR spectroscopy. Results from this study showed several possibilities for using DDGS as alternatives other than animal feed. Possibilities includes degrading it by suitable enzymes and producing additional ethanol, producing value added compounds, using it as human food additives, or even using as inert fillers for bio-composites.