L. monocytogenes was less sensitive to the action of EO than Salmonella. With respect to Listeria in fresh chicken sausage, a concentration of 1.5% was the most efficient for both EO. The best inhibitory effect on Salmonella was shown by 1.0% of O. vulgare EO, for which 5 hours ofcontact was sufficient to promote a reduction in the bacte-rial determination; in contrast, O. basilicum EO showed a significant reduction at the same concentration after 24 hours. Inhibitory effects of EO on bacterial strains were not immediate. The results showed an inhibitory effect at 5 hours, which remained constant or increased after 24 hours. Both EO have the potential to be explored by the food industry, and the combination of processes for food protection has shown a promising reduction of the factors limiting the use of these compounds, such as a negative impact on taste and high cost.