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The composition of the water-distilled essential oils of the berries and leaves of Juniperus excelsa. M. Bieb. were analyzed by gas chromatography-mass spectrometry (GC-MS). The main components in the berries of J. excelsa., accounting for 56.1% of the oil, were determined as α-pinene (34.0%), cedrol (12.3%), L-verbenol (5.4%), and D-verbenol (4.4%) while in the leaves of J. excelsa., accounting for 63.2% of the oil, were found to be α-pinen (29.7%), cedrol (25.3%), α-muurolene (4.4%), and 3-carene (3.8%). Cytotoxic and antimicrobial potential of the berries and leaves of J. excelsa. were investigated.

The chemical composition of the hydrodistilled essential oil of the air-dried aerial parts of wild red wormwood (Artemisia campestris. L.) was analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The species is poor in essential oil (yield = 0.1%). Seventy-one constituents representing 57.0% of total oil have been identified. The result show that oxygenated compounds compose the major part of oil (43.7%) and the main components are (Z,E.)-farnesol (10.3%) followed by cedrol (5.4%) and verbenone (3.8%). Toxic ketones such as α.- and β.-thujone are not detected in the oil.

The essential oils of fresh fruits and terminal branchlets with adherent leaves (leaves) of Platycladus orientalis (L.) Franco, growing wild in Iran, were analyzed by GC-MS, and screened for bacteriostatic and fungistatic activities (MIC determination). Eighteen components were identified in the essential oils. The major constituents of both cases were α-pinene, sabinene, 3-carene, limonene and cedrol. The essential oil of leaves has no antimicrobial activity, while the essential oil from fruit showed a modest and slightly antimicrobial activity against Bacillus subtilis, Candida albicans and Escherichia coli, Staphylococcus aureus, respectively. The defatted ethanol extract of leaves and fruits were rich in flavonoids and tannins.