Phenyllactic acid application to control Listeria monocytogenes biofilms and its growth in milk and spiced beef.

Listeria monocytogenes, as a food-associated pathogen, is able to develop biofilms on different surfaces of food contact, which seriously threatens food safety. Phenyllactic acid (PLA) exhibits excellent inhibitory effects on many bacterial strains including L. monocytogenes.

Andrographolide Inhibits Biofilm and Virulence in as a Quorum-Sensing Inhibitor.

is a major foodborne pathogen that can cause listeriosis in humans and animals. Andrographolide is known as a natural antibiotic and exhibits good antibacterial activity. We aimed to investigate the effect of andrographolide on two quorum-sensing (QS) systems, LuxS/AI-2 and Agr/AIP of , as well as QS-controlled phenotypes in this study.

Benzalkonium Chloride Adaptation Increases Expression of the Agr System, Biofilm Formation, and Virulence in .

Benzalkonium chloride (BC) is widely used for disinfection in food industry. However, prolonged exposure to BC may lead to the emergence of BC adapted strains of , an important foodborne pathogen. Until now, two communication systems, the LuxS/AI-2 system and the Agr system, have been identified in .

Role of the VirSR-VirAB system in biofilm formation of Listeria monocytogenes EGD-e.

The ability of Listeria monocytogenes, an important foodborne pathogen, to form biofilms in food processing environments leads to increased opportunity for contamination of food products, which is a major concern for food safety. In this study, the role of a complex system composed of the VirSR two-component signal transduction system (TCS) and the ATP-binding cassette (ABC) transporter VirAB in biofilm formation of L. monocytogenes EGD-e was investigated.