BIOLOGICAL ACTIVITY OF FATTY ACID CONSTITUENTS OF THE EGYPTIAN STRAWBERRYAND CARICA- PAPAYA LEAVES.

In our study we aimed to identify the fatty acid constituents of both Strawberry and Carica papayaleavesby using gas liquid chromatography (GLC). The results showed that we have nine fatty acids for Strawberry leaves, with main constituents 30.28 % of 9,12,15- Octadecatrienoic acid methyl ester and 23.37 % Palmitic acid methyl ester, but for Carica papaya we obtained eight fatty acid compounds with main constituents 35.6% Palmitic acid methyl ester and 14.527 % Eicosanoic acid methyl ester. Antimicrobial activities of fatty acids of both two plants were studied against fivebacterial strains and five fungal species. Results founded that; 0.3 ml concentration of the two plant extracts (10 mg / 1 ml) had inhibitory effect forall bacterial spp. and fungal spp.,but 0.1 ml concentration of two fatty acid extracts (10 mg / 1 ml) showed inhibitory effect against some bacterial spp. and fungal spp. indicating that the inhibitory effect increase with increasing the concentration of the extract.