Active compounds found in some plants have antiseptic action; for example, thyme has thymol and carvacrol, clove has eugenol and isoeugenol, and oregano has carvacrol and terpinenol-4. In some cases, terpenes from essences that are soluble in water have higher antibacterial power than others (47).
The sites or structures of the bacterial cell that are considered targets for action by the components of natural products are illustrated
Figure 1.