Mehdi Mirza - Phytochemistry Group, Department of Medicinal plants & By-products, Research Institute of Forest and Rangeland, Tehran, Iran
Mehrdokht Najafpoor Navaei - Phytochemistry Group, Department of Medicinal plants & By-products, Research Institute of Forest and Rangeland, Tehran, Iran
Zahra Behrad - Phytochemistry Group, Department of Medicinal plants & By-products, Research Institute of Forest and Rangeland, Tehran, 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(۴۷.۲%), Octanol(۱۵.۲%) and E-caryophyllen (۵.۷%) as the main constituents. ۲۵ compounds were identified in the stem oil with Elemicin (۶۵.۳%), Octyl acetate (۱۳.۰%) and Octanol (۳.۵%) as the major components. ۱۸ compound were identified in the  flower oil with Octyl acetate (۴۶.۸%), Elemicin (۱۲.۸%) and methyl chavicol (۱۰.۲%) as the major components. Among ۱۳ compounds studying in the seed oil of H.rechingeri, the major constituents were Octyl acetate (۹۱.۷%), Octanol (۳.۵%) and Octanal (۱.۲%).

Heracleum rechingeri, essential oil, Octyl acetate, elemicin