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Comparing Stem and Seed Essential Oil in Dorema ammoniacum D. Don. From Iran

Abstract: Dorema ammoniacum from Apiacea family (Vasha in Persian) is one of the most important species in Iran from medicine point of view. The genus Dorema is represented in the flora of Iran by six species and D.ammoniacum is one of them that have valuable essential oils. This wild plant grows in central regions of Iran particularly at eastern margin of Zagros Mountain ranges. The aim of this research was detection of essential oi composition in stem and seed of D.ammoniacum. For this purpose stems and seed of D.ammoniacum were collected in seed-yielding stage from Abadeh region (Fars province). The essential oils were extracted by hydro-distillation and analyzed by a combination of GC-MS. Thirty seven constituents were characterized representing 94.7 % of the total component which were detected from stem samples and twenty-six constituents were characterized representing 87.3 % of the total component which were detected from seed samples. Results showed hexadecanal (11.1 %), α-cadinol (6.6 %), sesquicineol-2-one (6.6 %), ethyl linoleate (6.3 %), ledol (5.1 %) and γ-eudesmol (4.4 %) were found to be the major constituents of the oil from stems and 2-pentadecanone (19.1 %), β-eudesmol (17.2 %), germacrene D (5.8 %), α-eudesmol (5.8 %) and spathulenoll (5.0 %) were the major components in essential oil of seeds.