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Jun 23, 2023 - Foods

Listeria Monitoring – What to Consider?

Listeria monitoring refers to the targeted sampling of processing areas and equipment for L. monocytogenes in a food operation and its documentation. The goal is to detect and eliminate persistent Listeria strains in the operation to avoid contamination of the food.

The examination for L. monocytogenes must be carried out on both equipment with food contact and in production areas without direct contact. Special attention should be paid to hard-to-reach areas, porous, uneven materials, water accumulations (e.g., drains), and difficult-to-clean devices and equipment where food residues can accumulate. Swab and sponge samples are suitable for sampling. 

To increase the likelihood of detection, sampling should be conducted during processing, i.e., before cleaning and disinfection.

Raw material investigations, intermediate and final product controls can also be part of Listeria monitoring.

We regularly conduct Listeria monocytogenes examinations in our laboratory, providing fast and reliable results.

Our customer advisors are happy to assist you with any questions.