Phytochemical study and biological effects of the essential oil of Fraxinus dimorpha Coss & Durieu § .

The present study describes the phytochemical study, antioxidant and antimicrobial activities of Fraxinus dimorpha essential oil, obtained from the leaves collected in the High Atlas Mountains. Forty compounds representing 86.2% with (E)-nerolidol as a major constituent and 29 compounds corresponding to 80.3% with eugenol as main components were identified from Ait M'hamed and from Siti Fadma, respectively. The F. dimorpha essential oil presents IC50 using DPPH varying from 5.33 to 6.03 mg/mL and EC50 using FRAP varying from 0.83 to 1.21 mg/mL. The antimicrobial activity of the oil was evaluated for ten microorganisms showed that the oil had a moderate potential activity. Fungal strains are more sensitive to the investigated oils, with a MIC varied between 1.8 and 3.8 mg/mL.