Document Type : Research Paper
Authors
1 MSc. Student, Department of Phytochemistry, Islamic Azad University, Pharmaceutical Sciences Branch, Tehran, Iran
2 Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
Abstract
Anthemis, belonging to Asteraceae family, has 23 native annual species in Iran whose flowers and other organs contain essential oil. To study the quantitative and qualitative characteristics of the Anthemis pseudocotula Boiss. essential oil, the seeds were collected from natural habitat in Maraveh Tapeh, and planted in the Alborz Research Station. In full flowering stage, samples were prepared from plant flowers, leaves, stems and flowering shoots. After air-drying, the essential oil was extracted by hydro-distillation method and analyzed by GC and GC/MS. According to the obtained results, the essential oil yield of flowers, leaves, stems, and flowering shoots were calculated to be 0.06, 0.02, 0.06, and 0.06-plant dry weight. Twenty-three components were identified in the leaf essential oil whose main components were β-thujone (27.3%), cadin-4-en-7-ol (cis) (11%), caryophyllene oxide (10%) and β-eudesmol (6.7%). In the stem essential oil, 14 components were identified and Z-β-farnesene (62.4%), lavandulyl and 2-methyl butanoate (12.4%) were the two main components. The three main components identified in the flower essential oil were β-thujone (33.6%), spathulenol (20.3%) and Z-β-farnesene (9.5%). The three main components identified in the flowering shoots were β-thujone (34%), Z-β- farnesene (12.3%) and caryophyllene oxide (12.3%). The results showed that β-thujone as a main component of essential oils ranged from 3% in leaves to 34% in flowering shoots. Our results clearly showed that more essential oil yield could be obtained from the flowering shoots of Anthemis pseudocotula at full flowering stage. As well, the desired parts could be extracted to obtain higher amount of essential oil components for specific objectives.
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