Moreover, the lower antifungal property of the oil in comparison to the carvone activity could be attributed to the high percentage of limonene present, since this terpenoid showed no or low antifungal activity compared to the other components. However, it does not mean that limonene has no antifungal value, as it has been demonstrated that some oils such as citron oil (rich in limonene) has some antifungal action.