Volatile Constituents of Origanum dubium Leaves and Stem-Bark.
The compositions of the essential oil of the leaves and stem-bark of ORIGANUM DUBIUM Boiss (Labiatae) were analysed for the first time by means of gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). A total of forty-one components were identified; qualitative and quantitative differences in the oil compositions were observed. The major constituents of the leaf oil were 1,8-cineole, linalool, and camphor while gamma-cadinene, linalool, beta-farnesene, and delta-cadinene were major components of the stem-bark oil.
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Laboratory of Pharmacognosy, Department of Pharmacy, University of Thessaloniki, 540 06 Thessaloniki, Greece.