Participants argued that reductions in listeriosis will require implementation of fundamental preventive controls, true “seek and destroy” efforts, and risk-based approaches. Dose-response models suggesting that low contamination may confer low risk were also discussed.
Longer application times, shorter nozzle distances, and spray patterns that deliver sufficient physical force to surfaces may contribute to improved microbial reduction. Sanitizer efficacy experiments could misrepresent real-world sanitation outcomes when shear stress and application time are not considered.
This episode of Food Safety Five discusses new research on avocado oil authenticity in processed foods, the effects of nanoplastics on bacterial biofilms in drinking water systems, factors influencing Listeria monocytogenes persistence on plastic food contact surfaces, and stress-adaptation traits that may help E. coli persist from farm to fork.
The findings suggest that pathogen persistence on plastic food contact surfaces is governed by the combined effects of material composition, engineered surface topography, and microbial ecology rather than any single factor.
A new hypothesis suggests Listeria monocytogenes persists by colonizing nutrient-rich voids left behind when Gram-negative bacterial biofilms disperse. If the theory is validated, the authors suggest shifting food safety strategies toward managing biofilm ecology and ecological succession, rather than focusing solely on pathogen detection.
This episode of Food Safety Five highlights new research on cold storage practices for fresh-cut produce, food safety perspectives among small-scale produce growers exempt from FDA's FSMA Produce Safety Rule, and water management strategies that reduce arsenic in rice.
L. monocytogenes is the fourth-leading foodborne illness-related cause of death in the U.S. Despite continued efforts, listeriosis incidence rates have not declined, prompting FDA to launch a series of public engagements to discuss best practices for managing the pathogen.
The label claim “STABILIZED” would indicate that a ready-to-eat (RTE) product had been formulated or processed to inhibit Listeria monocytogenes growth. The researchers advocate for formulation and process changes as listeriosis rates climb in Europe and stricter EU Listeria regulations come into effect.
Effective July 1, the amended Regulation (EU) 2073/2005 on the microbiological criteria for foods expands the requirements for food business operators regarding Listeria monocytogenes in ready-to-eat (RTE) foods.
The Center for Produce Safety (CPS)-funded study also found that some produce items may naturally inhibit Listeria monocytogenes growth and that peracetic acid may sometimes promote Listeria growth during storage.
