This study aimed to compare the chemical composition, the antioxidant activity and the antibacterial activity of essential oils (EOs) of Juniperus phoenicea, Juniperus thurifera and Juniperus oxycedrus, obtained from Ait Bouguemez region (Province of Azilal, Morocco). The analysis by GC/MS of essential oils led to identify 37, 54 and 38 components for J. phoenicea, J. thurifera, and J. oxycedrus, respectively. Monoterpenic fraction was found predominant in essential oils of the three samples. The DPPH free radical scavenging activity showed that essential oil of J. thurifera has the strongest antioxidant activity with an IC50 value of 12.07 μg/mL. The antibacterial activity showed that S. aureus was more sensitive than P. aeruginosa and E. coli for the three EOs tested.

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