Listeria monocytogenes Behaviour in Presence of Non-UV-Irradiated Titanium Dioxide Nanoparticles

• DOI: 10.1371/journal.pone.0084986
• Publication Date: 2014-01-09T21:40:24Z
• Authors: Maria Grazia Amme...; Francesca Iosi; Barbara De Berardis; Giuliana Guccione; Fabiana Superti; Maria Pia Conte; Catia Longhi
• Keywords: Titanium Dioxide; Nanomaterials; Silicon dioxide

Listeria monocytogenes is the agent of listeriosis, a food-borne disease. It represents serious problem for food industry because its environmental persistence mainly due to ability form biofilm on variety surfaces. Microrganisms attached surfaces are potential source contamination environment and animals humans. Titanium dioxide nanoparticles (TiO2 NPs) used in products it was reported that daily exposure these nanomaterials very high. Anti-listerial activity TiO2 NPs investigated only with UV-irradiated nanomaterials, based generation reactive oxigen species (ROS) antibacterial effect after UV exposure. Since both veicolated foods, this study explores interaction between non NPs, special focus formation intestinal cell interaction. Scanning electron microscopy quantitative measurements mass indicate influence production structural architecture listerial biofilm. Moreover, show interfere bacterial cells. Increased may favour survival transmission animal human hosts.