His research expertise is in food-safety microbiology, foodborne pathogens, safety of fresh fruits and vegetables, preharvest control of pathogenic E. coli, bioterrorism agents, and safety of organic food. Dr. Diez-Gonzalez teaches courses in food safety and food microbiology. He has served on the University of Minnesota Institutional Biosafety Committee, and he has advised both undergraduate and graduate students. He is also the recipient of the New Career Excellence Award for the College of Human Ecology at the University of Minnesota. He is member of the Editorial Board of the Journal of Food Protection and the Journal of Food Analytical Methods. Dr. Diez-Gonzalez received his PhD in food science from Cornell University.