Chemical Composition of Essential Oil from Leaves, Stems, Flowers and Seeds of Heracleum rechingeri Manden. from Iran

Chemical composition of the essential oils extracted from the leaves, stems, flowers and seeds of  Heracleum rechingeri Manden. were analyzed by GC and GC/MS. Twenty-four components were characterized for the leaf oil with Octyl acetate(47.2%), Octanol(15.2%) and E-caryophyllen (5.7%) as the main constituents. 25 compounds were identified in the stem oil with Elemicin (65.3%), Octyl acetate (13.0%) and Octanol (3.5%) as the major components. 18 compound were identified in the  flower oil with Octyl acetate (46.8%), Elemicin (12.8%) and methyl chavicol (10.2%) as the major components. Among 13 compounds studying in the seed oil of H.rechingeri, the major constituents were Octyl acetate (91.7%), Octanol (3.5%) and Octanal (1.2%).