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Chemical composition and antimicrobial activity of leaves and berries essential oils from Juniperus foetidissima Willd. (Cupressaceae) grown in R. Macedonia (RM) was investigated. GC/FID/MS analysis was carried out and 93 components were identified, representing 89.7-96.5% of the oils. The major components of the berries essential oil were α-pinene (19.2%), limonene (24.9%) and cedrol (23.1%), followed by smaller amounts of b-funebrene, trans-caryophyllene, germacrene D and d-cadinene. The composition of the leaves essential oil was variable depending on the region of collection. Accordingly, samples originated from southeastern RM contained essential oil with α-pinene (67.6%) and limonene (10.0%), from central part of RM with limonene (17.9-27.1%) and cedrol (28.8-33.9%), while samples from southwestern RM contained oil with terpinen-4-ol (19.1%), cis-thujone (8.3%), germacrene D (11.0%) and d-cadinene (6.3%) as predominant components in the oil. Antimicrobial screening of the essential oils was made by disc diffusion and broth dilution method against 16 bacterial strains of Gram-positive and Gram-negative bacteria and one strain of Candida albicans. The leaves essential oil showed stronger antimicrobial activity against Staphylococcus aureus, Streptococcus pyogenes and Haemophilus influenzae (MIC = 125 ml/ml) and moderate activity against Campylobacter jejuni (MIC > 500 ml/ml). Other investigated bacterial strains and Candida albicans were completely resistant to the antimicrobial activity of J. foetidissima essential oils.

Antimicrobial activity of berries and leaves essential oils of Macedonian Juniperus foetidissima Willd. (Cupressaceae)