Comparison of the Essential Oils from Leaves and Flower of Artemisia marschalliana Sprangel. from Iran

Artemisia (family Asteraceae) is a genus of small herbs or shrubs found in northern temperate regions. Thirty-four species of the genus are found in Iran of which two are endemic: A.melanolepis Boiss. And A.kermansis Podl [1]. The genus Artemisia has been investigated chemically and acetylenic compounds, flavonoids, cumarins and terpenoids, especially sesquiterpene lactones, have been reported [2]. Previously we reported the essential oils from the aerials parts, stem, leaf and flower of Artemisiachamaemelifolia. Menthyl acetate (26.5%, 22.0%, 20.5%, and 20.5%) and (Ζ)-nerolidol (20.8%, 26.3%, 14.7% and 18.1%) were the main constituents in the aerial parts, stem, leaf and flower oils, respectively [3]. The aim of our study is to identify the constituents of the essential oils of leaves and flowers of A.marschalliana, growing wild in East Azarbaijan, Iran, in July 2015. The oils were obtained by solvent free microwave extraction and analyzed by GC and GC/MS. Thirty-one components representing 91.6% and twenty-nine constituents representing 97.3% were identified in the leaf and flower oils of A.marschalliana, respectively. The major components of both oils were spathulenol ( 27.7% and 24.7% ), 2-propenoic acid-2-ethyl hexyl ester ( 11.2% and 17.3% ) and bicyclogermacrene ( 9.2% and 10.0% ), respectively and other notable components were caryophyllene oxide ( 8.8% and 7.7% ) and germacrene D ( 5.1% and 9.7% ), respectively. In both oils sesquiterpenes (72.2% and 69.8%) predominated over monoterpenes (0.9% and 3.7%) and aliphatic compounds (21.5% and 14.0%), respectively.