Prevalence of Listeria Species and Listeria monocytogenes on Raw Produce Arriving at Frozen Food Manufacturing Facilities

A study published in J Food Protection determined the frequency and numbers of Listeria species and L. monocytogenes on raw produce arriving at frozen food facilities. Five raw vegetables were selected: corn, carrots, green beans, peas, and spinach after arrival at the facilities. A total of 290 samples were collected. 33.1% were positive for Listeria spp, and 5.9% for L. monocytogenes. Enumeration of the positive samples showed that 85% had >100 MPN of Listeria spp. per g. The prevalence of Listeria spp. varied by commodity: spinach (66.7%), peas (50%), corn (32.2%), green beans (22.2%), and carrots (13%). L. monocytogenes prevalence was determined in corn (13.6%), peas (6.3%), and green beans (4.2%). @ https://meridian.allenpress.com/jfp/article/84/11/1898/466694/Prevalence-of-Listeria-Species-and-Listeria