system
Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, RESULTS. Meshes: Bacterial Adhesion, Food Handling, Food Microbiology, Listeria monocytogenes, Metals, Plastics, Rubber.
user
Does listeria monocytogenes adhere to many materials found in food-processing environments? Context: To investigate the adhesion of Listeria monocytogenes 10403S to 17 different, food-use approved materials representing metals, rubbers and polymers. Adhesion assays were conducted by placing 'coupons' of the materials in planktonic cultures at 30 degrees C, and then immediately withdrawing them ('short contact') or leaving them submerged in the cultures for 2 h. Adherent cells were recovered by sonication. In the short contact experiments, the logarithm of the mean viable counts ranged from 3.67 +/- 0.43 to 4.78 +/- 0.38. After 2 h contact time, the numbers of adherent cells had increased significantly for all materials with the exception of polypropylene. The highest count (6.33 +/- 0.31) recorded was for stainless steel 405.
assistant
Adhesion to a wide range of materials was time-dependent and characterized by reversible and irreversible stages. Final Decision: yes