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]

Larry Keener, CFS, PA is President and CEO of International Product Safety Consultants Inc. and an internationally regarded microbiologist and process authority in the food industry. His areas of expertise range from applied food microbiology to the development and application of novel preservation technologies.

In this bonus episode of Food Safety Matters, we speak to Jenny Du, Ph.D., Co-Founder of Apeel Sciences, about Apeel—a clean alternative to traditional post-harvest produce coatings and treatments—its transparent approach to disrupting an $11 billion industry.

In this episode of Food Safety Matters, we speak to Sandro Tarchini of the Cardano Foundation, a nonprofit dedicated to advancing the blockchain ecosystem, about the applications for blockchain throughout the food supply chain and how it can improve farm-to-retail traceability and transparency.

Suzette Stalker is Director of FSQA Program Compliance at FreshRealm Inc. Formerly, she served as Director of Food Safety, Quality, and Regulatory compliance at Target Corporation. At Target, Suzette was responsible for food safety standards and programs, covering nearly 2,000 stores and more than 60 supply chain facilities. Her work encompassed owned brand supplier manufacturing facilities, product labeling, produce farms, supply chain facilities, retail stores, and managing food recalls. Previously, Suzette led teams to develop and execute comprehensive internal audits of food safety and operational risks across Target. 

Sabrina Terada is the Manager for Food Safety Risk Management and Measurement at Yum! Brands. She is a seasoned professional in food safety and quality assurance with extensive experience at Yum! Brands, where her roles have included Manager of Global Food Safety Risk Management and Measurement and Manager of Global FSQA. In these positions, Sabrina held responsibilities supporting the Food Safety Governance Framework, coaching, and assisting business units with crisis management. 

Chris McGarvey is the Director of the Regulatory and Compliance Team for Walker Morris LLP in the UK. He has more than 25 years of experience working in both the private and public sector, and has a track record of helping clients navigate complex legal challenges in areas of highly regulated economic activity. Chris specializes in food law and led the Food Standards Agency's (FSA's) Legal Team through Brexit, the COVID-19 pandemic, and supply chain challenges associated with the Ukraine conflict. Chris' typical clients are Directors, Senior Managers, and specialists, particularly food scientists, who demand quick, accessible, and accurate advice. His work often has national reach and spans all four nations of the UK.

Kye Luker serves as the Chief Product Officer at FlexXray, where he leads development of the company's innovative X-ray inspection process and technology. With more than two decades of experience in the service, consumer packaged goods (CPG), and food and beverage industries, Kye brings a wealth of knowledge in continuous improvement, quality assurance, and formulations to his role.