The effect of aqueous and alcoholic extracts of galls of quercus infectoria on the growth of some pathogenic fungi

الملخص EN

The present study was aimed to estimate the antifungal activity of galls of Quercus infectoria on the growth of eight species from six different genera of pathogenic fungi, which isolated from different sources, includes: Opportunistic (Aspergillus flavus, A.

fumigates, A.

ochraceus, Cladosporium cladosporioides, Penicillium citrinum and Stachybotry schartarum) and dermatophytes: Microsporum gypseum and Trichophyton rubrum.

The Gall extracts were prepared by aqueous and ethanol extraction and two concentrations of each extract were used (2.5 and 5) mg/ml and tested for their activity as antifungal.

The results of pour plate method showed that, ethanol extract at both concentrations affected more than aqueous extract on the growth of mycelia, that decreased the growth of mycelia of the pathogenic fungi when compared with control, while the antifungal activity of Quercus gall by filter paper disc diffusion method on the radial growth of pathogenic fungi showed that the aqueous extracts of Quercus gall have no any effect on the growth inhibition of all studied fungi, while the ethanol extracts of Quercus gall have low effect on the studied fungi