Microorganisms
within or on wet surfaces such as plants, utensils, and equipment
often form biofilms that promote resistance to various kinds
of stress. In particular, biofilms formed by Pseudomona aeruginosa, Staphylococcus aureus, Listeria
monocytogenes , and Salmonella pose serious
threats because of their strong resistance to disinfectants and their
roles in nosocomial infections.