The EOCz, EOCc, and (E)-cinnamaldehyde exhibited bacteriostatic and bactericidal activity against S.
pyogenes biofilms shows that the (E)-cinnamaldehyde concentration was approximately eight times higher than that of EOCc and four times higher than that of EOCz. In this case, it may be suggested that other components of the essential oils also participate synergistically in the antibiofilm action.
NC: negative control; EOCc: essential oil Cinnamomum cassia; EOCz: essential oil Cinnamomum zeylanicum.