Effect of Three Medicinal Plants Extracts on the Growth of Some Yeasts

Abstract

This study conducted to detect the effect of the ethanolic extracts for some medicinal plants on 16 yeast species isolated from the oral cavity of cancer patients, three plants which are  Lavandula angustifolia, Salvia officinalis and Syzygium aromaticum were used to study their inhibition  bioactivity and compare their effect with three antifungal drugs (Fluconazole, Ketoconazole and Nystatin), the results showed that Ethanolic extract of L. angustifolia exhibited antifungal bioactivity against all yeast species and revealed inhibition zones ranged from 16-36 mm. with highest effect on C. parapsilosis whereas the lowest effect was on species H. uvarum, while the ethanolic extract of S. officinalis and S. aromaticum showed inhibition zones 16-27 mm. and 17-31 mm. respectively, the results showed that the plants extracts having much more effect on the yeasts growth from the antifungal drugs.

Keywords: yeasts, medicinal plants, Ethanolic extracts.