
Preventing Foodborne Pathogens With Plant-Derived Compounds with Karl Matthews
From Meet the Microbiologist by Ashley Hagen, M.S.
September 25, 2025 · 59 min · Episode 168
About this episode
Karl Matthews discusses methods to eliminate foodborne pathogens from fresh produce using plant-derived compounds.
Karl Matthews, Ph.D., Professor of Microbial Food Safety at Rutgers University, discusses ways to eliminate pathogens like Salmonella , E. coli O157:H7 and Listeria from fresh fruits and vegetables. He highlights the importance of preventative measures from farm to table, including the use of water antimicrobials, like chlorine, and photosensitizers, like curcumin. Watch this episode: https://youtu.be/6Wkef9RyUVE Ashley's Biggest Takeaways We consume billions of microorganisms in the food that we eat each day. Fresh fruits and vegetables that are not thermally processed are likely to carry a higher microbial load than cooked foods. Many of those microbes are not concerning to human health. However, when pathogens of human health concern are present, the food can become unsafe to eat. Scientists use many methods from pre-harvest through post-harvest to keep food free of human pathogens. Water antimicrobials, such as chlorine, and photodynamic inactivation using photosensitizers, such as curcumin, are 2 preventative measures that Matthews and colleagues are investigating. Curcumin is a natural chemical compound found in the turmeric plant. It is responsible for giving tumeric its…
People in this episode
Host: Ashley
Guest: Karl Matthews
Topics covered
- food safety
- microbiology
- plant-derived compounds
- pathogen prevention
Keywords
- Salmonella
- E. coli
- Listeria
- curcumin
- chlorine
- water antimicrobials
Mentioned in this episode
Products: curcumin, chlorine
Places: the United States, U.S.
More episodes of Meet the Microbiologist
- Diagnostics in Action: Telling Microbial Stories · April 17, 2026 · 44 min
- Decoding the Pneumococcal Capsule With Moon Nahm · March 28, 2026 · 42 min
- From Earth to Orbit: Applied and Environmental Microbiology With Veronica Garcia · February 13, 2026 · 36 min
- Unraveling Introns and Expectations With Marlene Belfort, Ph.D. · January 24, 2026 · 46 min
- The Gut Healing Power of Microbes and Cruciferous Vegetables · October 24, 2025 · 43 min
- Early Microbial Life with Michael Lynch and Vaughn Cooper · August 22, 2025 · 40 min
Explore listener stats, chart rankings, contacts and more on the Meet the Microbiologist podcast page.