Keith Warriner, Ph.D., is a professor of food science at the University of Guelph. He is also the food science graduate coordinator of the department’s Master of Science and Ph.D. food science programs.

After completing his Ph.D. in microbial physiology at the University College of Wales, he worked for the Department of Medicine at the University of Manchester where he studied biosensors. He also attended the University of Nottingham as a research fellow in food microbiology, working with fresh produce.

He joined the Department of Food Science at the University of Guelph in 2002 and was promoted to full professor in 2011. He is the former president of the Ontario Food Protection Association, a member of the International Association of Food Protection, is an associate editor of the Canadian Journal of Microbiology, and is on the editorial board for Applied & Environmental Microbiology and International Journal of Food Microbiology.

​Keith's research revolves around food safety and food microbiology, allowing him to work closely with industry and apply his research findings in a practical way.

Keith was previously interviewed for Episode 37 of Food Safety Matters.

In this episode of Food Safety Matters, we speak to Keith [14:30] about:

• The history of Henry Fenton, the Fenton reaction, and the Fenton reagent
• The use of water, hydrogen peroxide, and UV light to kill pollutants, pesticides, etc.
• Applying hydroxyl radicals to fresh produce including spinach and other leafy greens
• The advanced oxidation process (AOP) and why it's so problematic with tomatoes
•  How the 2006 spinach outbreak change the leafy greens industry's outlook on food safety
• Thoughts on how to address polluted water affecting leafy greens and how his process would likely be effective
• The George Weston Seeding Innovation Program
• Why washing is so problematic in preventing cross-contamination in leafy greens
• What matters to food companies when it comes to AOP
• AOP's use with meat and fish
• The current pandemic, N95 masks, and how food recalls have been affected

News Mentioned in This Episode
FDA: Nearby Cattle Grazing Land Likely to Blame for Late 2019 Romaine Lettuce Outbreaks [7:50]
Pandemic Challenges Highlight the Importance of New Era of Smarter Food Safety [11:22]

Alfredo Fernández, J.D. is an attorney and Partner at Shipman & Goodwin LLP. As a member of the firm's national Environmental Practice, Alfredo advises clients across industry types on environmental, health, and safety issues that arise in all areas of business operations. Risk management pertaining to per- and polyfluoroalkyl substances (PFAS) is one area of focus. Alfredo also counsels private and public entities regarding abatement of hazardous materials and conditions. He received his J.D. from University of Connecticut School of Law and holds a B.S. degree from the University of Michigan.

Edward G. Dudley, Ph.D. is the Director of the E. coli Reference Center and a Professor of Food Science at the Pennsylvania State University. He has a broad background in molecular biology, physiology, and foodborne bacteria genomics, with expertise in both beneficial and pathogenic species. His current research program focuses on factors that drive the virulence of Escherichia coli O157:H7 and the development of DNA sequence-based methods for tracking pathogen spread during foodborne illness outbreaks, including wastewater monitoring. 

Phil Kafarakis is the President and CEO of IFMA The Food Away from Home Association, formerly known as the International Foodservice Manufacturers Association. He is responsible for overseeing IFMA's day-to-day operations and directing the activities of the association in support of its policies, goals, and objectives. Phil is a highly accomplished senior executive with broad experience leading major food industry companies and associations. He began his industry career in the manufacturing sector, successfully leading and managing businesses at Kraft, Jones Dairy Farm, Cargill, and McCormick & Co., where he also served on IFMA's Board of Directors. He also previously served as President of the Specialty Food Association (SFA) and as the Chief Innovation and Member Advancement Officer at the National Restaurant Association (NRA).

Mark Carter is the Senior Software Product Manager at Hygiena. He assumed the presidency of the International Association for Food Protection (IAFP) at the conclusion of the IAFP Annual Meeting in July 2024.

Mr. Carter has extensive international business and technical experience. He most recently served as COO of Matrix Sciences, as well as the Executive Vice President of Corporate Development, where he was responsible for Matrix Sciences Mergers and Acquisitions activity. He previously held positions as CEO of QC Laboratories and Corporate Vice President of Research and Development with the Silliker Group Corporation (now Mérieux NutriSciences). He has served within the food industry as Section Manager for Microbiology and Food Safety at Kraft Foods and Corporate Laboratory Group Leader at McKee Foods Corporation.

Jason Evans, Ph.D. is the Dean of the College of Food Innovation and Technology (CFIT) at Johnson & Wales University, which offers baccalaureate and graduate programming in Culinary Arts, Culinary Science, Culinary Nutrition, Food and Beverage Entrepreneurship, and Sustainable Food Systems.

Kimberly Baker, Ph.D. serves as the Food Systems and Safety Program Team Director and an Associate Extension Specialist with the Clemson University Cooperative Extension Service. She received her Ph.D. in Food Technology from Clemson University and is both a registered and licensed dietitian, as well as a trained chef.