Abstract
Essential oils were isolated by hydrodistillation from the stems, flowers and seeds of Pimpinella aurea D.C. They were collected individually from Fasham (north-west of Tehran province). The yields of stem + leaf, flower and seed oils were 0.4%, 1.5% and 2.0% w/w, respectively; 32 constituents were identified in the stem + leaf oil, 18 in the flower oil and eight in the seed oil. Major constituents of the stem + leaf oil were: 1,8-cineol and limonene (21.4%), viridiflorol (12.8%), α-pinene (11.5%), kessane (10.5%), germacrene D (4.9%), β-bisabolene (4.2%), α-zingiberene (3.3%) and citronellyl acetate (3.1%). Major constituents of the flower oil were: viridiflorol (32.5%), β-bisabolene (29.5%), caryophyllene oxide (6.6%), 1,8-cineol + limonene (8.9%) and estragol (5.1%). Major constituents of the seed oil were: β-bisabolene (50.8%), and viridiflorol (37.0%). Three compounds (β-bisabolene, viridiflorol and caryophyllene oxide) were common to all three oils. 1,8-Cineol and limonene, kessane and α-pinene were the major compounds in the stem + leaf and flower oils but were not found in the seed oil. Copyright © 2004 John Wiley & Sons, Ltd.
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