Distillers Grains

KeShun Liu, Ph.D., is a Research Chemist with the United States Department of Agriculture, Agricultural Research Service in the Pacific West Area. His research program focuses on developing plant-based ingredients (protein and/or lipid) for fish feed and other uses. He has over 26 years of research experience at academic institutions, in private industries, and at governmental agencies in the field of food science and technology. His expertise is in chemistry, processing, and value-added utilization of grains, oilseeds, legumes, and their by-products (including distillers grains).Kurt Rosentrater, Ph.D., a Bioprocess Engineer, is a Lead Scientist with the United States Department of Agriculture, Agricultural Research Service, at the North Central Agricultural Research Laboratory in Brookings, South Dakota. His research program focuses on issues associated with distillers grains, the coproducts from fuel ethanol production, and value-added utilization for these coproducts. His expertise is in process and product development, alternative recycling and reprocessing strategies for food and organic waste streams, modeling and simulation of processing systems, plant layout, and engineering design. Prior to joining USDA, he was on faculty at Northern Illinois University, and also worked in private industry.

• Introduction, History, Raw Materials, and Production: Toward a Scientific Understanding of DDGS. Overview of Fuel Ethanol Production and Distillers Grains. Historical Perspective on Distillers Grains. Grain Structure and Composition. Manufacturing of Fuel Ethanol and Distillers Grains—Current and Evolving Processes. Ethanol Production from Starch-Rich Crops Other than Corn and the Composition and Value of the Resulting DDGS. Properties, Composition, and Analytics: Physical Properties of DDGS. Chemical Composition of DDGS. Lipids in DDGS. Analytical Methodology for Quality Standards and Other Attributes of DDGS. Mycotoxin Occurrence in DDGS. Traditional Uses: Feeding DDGS to Beef Cattle. Feeding DDGS to Dairy Cattle. Feeding DDGS to Swine. Feeding DDGS to Poultry. Further Uses: Feeding DDGS to Finfish. Feeding DDGS to Other Animals. Using DDGS as a Food Ingredient. Emerging Uses: Using DDGS in Industrial Materials. Using DDGS as a Feedstock for Bioenergy via Thermochemical Conversion. Using DDGS as a Feedstock for Bioenergy via Anaerobic Digestion. Dry Grind Coproducts as Cellulosic Ethanol Feedstock for Fuel Ethanol. Extraction and Use of DDGS Lipids for Biodiesel Production.. Process Improvements: Improved and New Enzymes for Fuel Ethanol Production and Their Effect on DDGS. Fractionation of DDGS Using Sieving and Air Classification. Concluding Thoughts—Toward Increasing the Value and Utility of DDGS. Index.