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]

In this episode of Food Safety Matters, we speak to Jay Berglind, the CEO of Aegis Foods and the maker of Fearless Eggs, known for its novel pasteurization process. Jay discusses the science behind Fearless Eggs’ method and what sets it apart from traditional pasteurization, and the importance of food safety innovation.

Tom Black is the First Assistant Secretary of the Exports and Veterinary Services Division at the Australian Government's Department of Agriculture, Fisheries, and Forestry. In this role, he is responsible for regulating and facilitating Australia's exports of animal commodities and certified organic products, while also providing the overarching technical food safety framework for both food exports and imports.

Gabor Molnar, Ph.D. is an Industrial Development Officer at the United Nations Industrial Development Organization (UNIDO), technically leading UNIDO's food safety work. As part of his responsibilities, Dr. Molnar designs and implements food safety capacity-building initiatives, mostly in Asia and Africa. He also represents UNIDO in various global forums, including the Codex Alimentarius Commission. Dr. Molnar is the main organizer of the Vienna Food Safety Forum (VFSF) and specializes in the domain of digitalization for food control and safety systems. Dr. Molnar holds a Ph.D. from Université Laval, as well as multiple master's degrees and certifications.

Kris Sollid, RD, is the Senior Director for Research and Consumer Insights at the International Food Information Council (IFIC). A registered dietitian with a passion for improving nutrition science communications, his role at IFIC includes leading consumer research projects, educational resource development, social and traditional media engagement, and written contributions to various consumer, trade, and peer-reviewed publications.

John Spink, Ph.D. is the Director and Lead Instructor for the Food Fraud Prevention Academy, as well as an Assistant Professor in the Department of Supply Chain Management (SCM) in the College of Business at Michigan State University (MSU). His food fraud prevention research focuses on policy and strategy to understand and prevent supply chain disruptions and to implement procurement best practices. He is widely published in leading academic journals and has helped lead national and global regulatory and standards activity. More recently, his teaching and research has expanded to supply chain disruption management and procurement best practices.

Roy Fenoff, Ph.D. is an Associate Professor in the Department of Criminal Justice at The Military College of South Carolina (The Citadel). He is also a Forensic Handwriting and Document Examiner and an expert in forgery detection. Dr. Fenoff specializes in forgery and document fraud, food fraud and protection, and transnational crime.

David T. Dyjack, Dr.P.H., CIH has served as Executive Director and CEO of the National Environmental Health Association (NEHA) since May 2015. Dr. Dyjack's 30-year career includes expertise in environmental health, emergency preparedness and response, public health informatics, infectious disease, workforce development, governmental infrastructure, maternal and child health, health equity, and chronic disease. A board-certified industrial hygienist, Dr. Dyjack also has advanced degrees in public health with a doctorate from the University of Michigan and a master's degree from the University of Utah.

Kathy Knutson, Ph.D., PCQI, is educated in bacteriology, food science, and education. She speaks, writes, and trains on compliance for the Food and Drug Administration's (FDA's) Food Safety Modernization Act (FSMA). She has trained over 500 Preventive Controls Qualified Individuals (PCQIs). Dr. Knutson works with managers to write thorough hazard analyses, food safety plans, recall plans, environmental monitoring programs, and allergen programs. In 2020, she published a book, Food Safety Lessons for Cannabis-Infused Edibles. Dr. Knutson travels to manufacturers for swabbing to locate a pathogen during recall investigations and for gap assessments of Good Manufacturing Practices (GMPs).