Kurt Rosentrater, Ph.D.

Associate Professor; Executive Director (Iowa State University; Distillers Grains Technology Council )

Topic: 2019 Update on DDGS Proximate and Mycotoxin Proficiency Testing Program

Summary: In late 2018 the Distillers Grains Technology Council initiated a proficiency testing program for DDGS that includes proximate analysis (protein, fat, fiber, ash, moisture) and four key mycotoxins (aflatoxin, DON, zearalenone, and fumonisin). This proficiency program builds upon the successful completion of the DDGS inter-laboratory studies that were initiated by POET to assess DON. This presentation will provide an update on the program and will illustrate laboratory results from the first year of data collection. At this point in time, there are almost 50 participating laboratories, including commercial labs, mycotoxin test kit companies, as well as ethanol plant labs. There are many opportunities for all laboratories to reduce variability for all analytes, both amongst and within laboratories.


Dr. Kurt Rosentrater is the Executive Director of the Distillers Grains Technology Council. He is also an Associate Professor in the Departments of Agricultural and Biosystems Engineering, and Food Science and Human Nutrition at Iowa State University. He is actively pursuing a research program to improve the sustainability of biofuel, grain, feed, food, and agricultural-based systems. He is developing sustainable, economical co-products and value-added products, such as enhanced feeds, foods, biofuels, bioplastics, biocomposites, industrial intermediates, and ingredients. A key component to these efforts is life cycle assessment and techno-economic analysis in order to understand and improve environmental impacts as well as reduce costs.