What characteristic of Listeria monocytogenes makes it a concern in food production environments?

Listeria monocytogenes is particularly concerning in food production environments due to its ability to form biofilms on food contact surfaces. Biofilms are clusters of microorganisms that adhere to surfaces and are encased in a protective layer of extracellular polymeric substances. This characteristic makes Listeria difficult to eliminate because biofilms can provide a shield against cleaning and sanitizing chemicals. When Listeria forms biofilms, it can persist in production facilities, leading to recurrent contamination of food products.

While other characteristics of Listeria monocytogenes may pose risks, the biofilm formation specifically highlights the importance of stringent cleaning protocols in food production settings to mitigate contamination risks. Organizations in the food industry must regularly monitor and maintain cleanliness on surfaces to prevent the establishment of biofilms, thereby reducing the chances of contamination in the food supply chain.