different materials and their surface topography, since adhesion occurred in great extent to materials with
higher values of roughness (SS 304 - average roughness of 30.9 nm and wST – 31.5 nm and bST – 24.6
nm) but is quite similar to the smoothest material (marble – average roughness of 8.5 nm). Moreover, the
source of L. monocytogenes isolates does not seem to affect the ability of adhesion. Stepanovic et al. [38]
also reported that the source of Listeria isolates (from humans, animals, or foods) did not affect biofilm
formation. In conclusion, it was observed that L. monocytogenes adhesion to abiotic surfaces is not
dependent on the substratum hydrophobicity and roughness being a multi-factorial process strongly
dependent on the strain and the kind of surface.