found that Citrus
essential volatile oil extracts at minimum inhibitory concentrations (MIC) ranging from 0.125% to 0.5% had a good
inhibitory activity against the Salmonella spp. Barbosa et al. found that the MIC of oregano (Origanum
vulgare L.) essential volatile oil extracts was 5% and 0.46% v/v against grampositive
(S. aureus and Listeria
monocytogenes) and gramnegative
(E. coli and S. Enteritidis) bacteria, respectively.