Purpose: To evaluate the effect of carvacrol against
Salmonella
saintpaul biofilms on stainless steel
surface.
Methods: The effect of carvacrol on planktonic cells of S. saintpaul was evaluated by determining the
minimum inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The action of
carvacrol on S. saintpaul biofilms on stainless steel surface was evaluated on established biofilm and on
biofilm formation by counting the number of bacterial cells that adhered to the surface and by scanning
electron microscopy.
Results: The antimicrobial activity of carvacrol against planktonic cells of S. saintpaul was observed.
The highest inhibitory effect of carvacrol was observed during biofilm formation at 78 and 117 μg ml
-1
when S. saintpaul biofilms were reduced by 3 log cycles (
p < 0.05).
Conclusion: Carvacrol reduced the number of bacterial cells that adhered to stainless steel surface,
making it a potential compound for Salmonella saintpaul control.
