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]

Adam Holt, BCE is a Board Certified Entomologist with decades of hands-on experience. He is the Founder and Principal Consultant at NameDatBug, a pest control consulting firm grounded in real-world success across every level of the pest control industry. Adam has held executive roles at several PCT Top 100 companies and brings unmatched industry expertise to every engagement. He holds a patent for an electronic rodent monitoring device, has worked in pest control software development, and has collaborated closely with manufacturers and distributors on both product design and market strategy.

Shannon Sked, Ph.D., BCE is an entomologist and the National Technical Director at Orkin. He received a B.S. degree from Rutgers University, an M.S. degree in Entomology from Penn State University, and a Ph.D. from Rutgers' Urban IPM Entomology lab. Dr. Sked's research focuses on distribution and temporal modeling of insect and rodent communities in order to design effective pest management programs. He began his career as a Navy Entomologist overseeing structural pests, specifically focusing on pests related to imports, exports, and within the logistics chain for Navy operations. He had the unique opportunity to practice applied entomology and invasive species management in the Middle East, North Africa, the Caribbean, and the eastern shore of the U.S.  

Michael Ciepiela is Vice President of Quality and Continuous Improvement at Southern Specialties. He brings over a decade of diverse experience in the food and beverage industry, along with experience in the pharmaceutical sector, specializing in quality assurance and food safety. Throughout his career, he has excelled in multi-site implementation and adherence to GFSI requirements and regulations. Michael has also been instrumental in promoting and educating Lean Six Sigma principles in fast-paced, cross-departmental settings. As a recognized thought leader, he frequently speaks at national conferences. He is also a senior member of the American Society for Quality (ASQ). Michael holds a bachelor's degree in Biology from Alfred University and a Six Sigma Master Black Belt from Villanova University.

Mindy Brashears, Ph.D. is the U.S. Department of Agriculture's (USDA's) Under Secretary for Food Safety. She previously served as Under Secretary for Food Safety from 2020–2021, and Deputy Under Secretary in 2019. Dr. Brashears returns to USDA from Texas Tech University, where she was a Paul Whitfield Horn Distinguished Professor of Food Safety and Public Health, the Roth and Letch Family Endowed Chair for Food Safety, and the Director of the International Center for Food Industry Excellence.

Carmen Rottenberg is a leader in food safety and agriculture policy, serving as Managing Director of Groundswell Strategy a Board Member for the Partnership for Food Safety Education. Prior to launching Groundswell Strategy, Carmen served as Administrator of USDA's Food Safety and Inspection Service. Over her 13 years with USDA, Carmen held several leadership roles and was credited with spearheading key agency initiatives including modernizing food safety inspection systems and establishing and updating pathogen performance standards. Carmen has extensive experience achieving collaboration across federal, state, and municipal agencies including with the Food and Drug Administration (FDA), the Occupational Safety and Health Administration (OSHA), with state departments of agriculture and across USDA's 29 agencies and offices.

Jules Shepard is the CEO and Founder of gfJules, the number-one‑voted gluten‑free flour and baking mixes company in the United States. A recognized gluten‑free baking expert, she has authored three award‑winning books in the field and recently released a new cookbook dedicated to gluten‑free bread. A long‑standing and respected leader in the gluten‑free and food allergy community, Jules championed the gluten‑free food labeling movement in 2011. Her tireless advocacy, education, and lobbying efforts culminated in her receiving the first‑ever "Gluten Free Person of the Decade" award in 2020.

Lily Yasuda is the Deputy Director of the Alliance to Stop Foodborne Illness, where she leads national initiatives that bring together food industry leaders to strengthen food safety culture and support continuous learning across the sector.

Athenais Boeffard is a collaborative and people-focused production leader with over a decade of experience in food manufacturing and food safety. 

John Boyce has over 45 years of experience in various aspects of food production, food safety, quality assurance, sanitation, training, and auditing.