Bob Whitaker, Ph.D., recently retired, served as the chief science and technology officer for the Produce Marketing Association (PMA). In that role, Bob was responsible for food safety, technology, supply chain management, and sustainability. He also served on the Center for Produce Safety's Board of Directors as well as on the California Leafy Greens Technical Committee. Prior to joining PMA, Bob spent 16 years in the biotechnology arena with DNA Plant Technology Corporation as a researcher, and then as vice president of fruit and vegetable R&D. Bob's career has also included roles at NewStar Fresh Foods and its subsidiary MissionStar Processing.

Bob earned his doctorate in biology from the State University of New York at Binghamton.

Jennifer McEntire, Ph.D., is the vice president of food safety and technology at United Fresh Produce Association. Before that, she was the vice president of science operations for the Grocery Manufacturers Association. She has also had roles as vice president and chief science officer at The Acheson Group and as the senior staff scientist and director of science and technology projects for the Institute of Food Technologists. She is an advisory board member of the Global Food Traceability Center, the technical committee of the Center for Produce Safety, and she serves on the executive committee of the Food Safety Preventive Controls Alliance.

Jennifer earned her Ph.D. from Rutgers University as a U.S. Department of Agriculture (USDA) National Needs Fellow in food safety. 

In this episode of Food Safety Matters, we speak to Bob and Jen [14:07] about:

• How United Fresh and PMA work with retailers during recalls and foodborne outbreaks
• False beliefs that contamination within the leafy greens community doesn't or can't affect other food commodities
• How outbreaks that fly under the radar and go unannounced can hurt the industry
• The use of ag water and whether it's really the true root of contamination
• Their thoughts on the Produce Safety rule as it's currently written
• What trade associations are focusing on for the future

Bob's Articles in Food Safety Magazine
Latest Research Findings Hit on Produce Safety Priorities 
Confronting Food Safety Challenges Head-On in Produce 
The Supply Chain and Food Safety Culture: Primary Production 
The Supply Chain and Food Safety Culture: Sector Leaders Sharing Their Challenges and Recommended Practices

Jen's Articles in Food Safety Magazine
Fixing FSMA's Ag Water Requirements 
Environmental Monitoring in the Era of Whole-Genome Sequencing
Building Food Safety Leaders
Product Tracing in Food Systems: Legislation vs. Reality

News Mentioned in This Episode
USDA's New Swine Slaughter Rule Hit By Another Lawsuit [2:13]
GMA Debuts as CBA [5:51]
Three Separate Romaine Lettuce Outbreaks Declared Over [10:00]

Campbell Mitchell, M.B.A. is Head of Food Safety and Compliance for Kraft Heinz North America. He has more than 30 years of international experience in food safety, quality management, and risk mitigation. Prior to joining Kraft Heinz, Campbell served as Vice President of Quality and Safety at Fairlife LLC, a $4-billion Coca-Cola-owned dairy brand. He has also held senior leadership roles with Kerry Group and Almarai in the Middle East. Additionally, he founded a consultancy that supported Tiger Brands in Africa.

Helena Bottemiller Evich is the Founder and Editor-in-Chief of Food Fix. She previously led coverage of food and agriculture at POLITICO for nearly a decade, winning numerous awards for her work, including a prestigious George Polk Award for a series on climate change and two James Beard Awards for features on nutrition and science. In 2022, she was a James Beard Award finalist for a deep dive on diet-related diseases and COVID-19. Helena is also a sought-after speaker and commentator on food issues, appearing on CNN, MSNBC, CBS, BBC, NPR, and other outlets. Her work is widely cited in the media and has also been published in the Columbia Journalism Review and on NBC News.

Frank Yiannas, M.P.H. is a renowned food safety leader and executive, food system futurist, author, professor, past president of the International Association of Food Protection (IAFP), and advocate for consumers. Most recently, he served under two different administrations as the Deputy Commissioner for Food Policy and Response at the U.S. Food and Drug Administration (FDA), a position he held from 2018–2023, after spending 30 years in leadership roles with Walmart and the Walt Disney Company.

Drew McDonald is the Senior Vice President of Quality and Food Safety at Taylor Fresh Foods in Salinas, California, where he oversees the quality and food safety programs across the foodservice, retail, and deli operations under both FDA and U.S. Department of Agriculture (USDA) jurisdictions. Mr. McDonald works with an impressive team developing and managing appropriate and practical quality and food safety programs for fresh food and produce products. He has more than 30 years of experience in fresh produce and fresh foods.

John Besser, Ph.D. worked for ten years as Deputy Chief of the Enteric Diseases Laboratory Branch at the U.S. Centers for Disease Control and Prevention (CDC), where he was involved in national and global programs to detect, characterize, and track gastrointestinal diseases. Prior to CDC, Dr. Besser led the infectious disease laboratory at the Minnesota Department of Health (MDH) for 19 years and served as a clinical microbiologist at the University of Minnesota Hospital for five years. He currently works as an independent contractor and consultant. Dr. Besser is the author or co-author of more than 70 publications. He received his Ph.D. and M.S. degree from the University of Minnesota.

Craig Hedberg, Ph.D. is a Professor in the Division of Environmental Health Sciences at the University of Minnesota and Co-Director of the Minnesota Integrated Food Safety Center of Excellence. He promotes public health surveillance as a prerequisite for effective food control, and his work focuses on improving methods for collaboration among public health and regulatory agencies, academic researchers, and industry to improve foodborne illness surveillance and outbreak investigations.

In this year-end episode of Food Safety Matters, we round up the top stories of 2025, covering U.S. federal food safety policy changes under the Trump Administration, MAHA- and state-led moves against food additives of concern and ultra-processed foods, infant formula safety, science on Listeria and biofilms, ongoing monitoring of avian flu, and AI food safety applications.

In this episode of Food Safety Matters, we speak to legal expert Brian P. Sylvester, J.D. about the rapidly evolving U.S. food regulatory landscape under the MAHA movement, and how food companies can prepare for state and federal policy changes regarding food dyes, GRAS ingredients, ultra-processed foods, and other areas.

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.