Liha töötlemine
effective on attached microorganisms com- Listeria monocytogenes is a pathogenic bac-
pared with free cells (Holah et al. 1990a). terium that is widely spread throughout the
Resistance of treated biofilms to sanitizing environment. It has been isolated from soil,
Plant Cleaning and Sanitation 295
water, silage, and many other environmental the dicing machine, L. monocytogenes origi-
sources. Listeriosis may develop in birds, nally found in plant A was soon also found
animals, and humans. L. monocytogenes is in plants B and C, and was frequently iso-
especially pathogenic to high-risk popula- lated from the diced products. This particular
tions, including newborns, pregnant women, strain of L. monocytogenes proved to have
elderly, and immunocompromized persons. a high level of adherence to stainless steel
annaabi.ee 
