Chemical Composition of the Essential Oil from Flower, Stem and Leaves of Astragalus schahrudensis Bge. from Iran
2007
Akhlaghi, H. | Rustaiyan, A. | Larijani, K. | Shafaghat, A. | Masnabadi, N. | Masoudi, S.
The essential oils obtained by hydrodistillation of the flowers, stems and leaves of Astragalus schahrudensis Bge, endemic in Iran, were analazed by GC and GC/MS. Seventeen compounds representing 96.6% of the flower oil of A. schahrudensis were identified; among them, germacrene D (47.6%) and germacrene B (17.8%) were the major ones. The stem oil was characterized by higher amount of beta-selinene(29.4%),delta-guaiene (21.7%), alpha-guaiene (13.4%) and alpha-selinene (10.9%) among the 14 components comprising 94.6% of the total oil detected. Eighteen compounds representing 97.3% of the leaf oil of the plant were identified; among them, alpha-pinene (33.8%) bornyl acetate (14.2%), limonene (12.2%) and alpha-fenchyl acetate (10.0%) were the major ones. The flower and stem oils of A. schahrudensis consisted mainly of sesquiterpenes, while in leaf oil monoterpenes predominated over sesquiterpenes.
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