(75.16%). It is important to highlight that the same dramatic
reduction of contamination was observed with total adherent
flora (data not shown), indicating that therewas no bacteriostatic
effect of the biosurfactants on the strains of L. monocytogenes.
Considering all these results, it seems clear that the biological
pre-treatment of stainless steel substrata by both biosurfactants
led to noticeable drops (from 75 to 99%) in the adhesion of the
four Listeria strains to these surfaces (Table 4). This antiadhesive
effect observed with both biosurfactants against foodborne
pathogenic germs should be compared to data obtained by Busscher’s
team on the adhesion of Enterococcus faecalis [39] and
Candida albicans [40], two uropathogen microorganisms found
in the biomedical domain.