Chemical constituents of essential oil of Dracocephalum moldavica L. and Dracocephalum kotschyi Boiss. from Iran

Abstract

<em>Dracocephalum moldavica </em>L. and <em>Dracocephalum kotschyi </em>Boiss. are aromatic plants belonging to Lamiaceae family.<strong> </strong>The aim of this study was to identify the chemical components of <em>D. kotschyi<strong> </strong></em>and <em>D. moldavica</em> from Iran.<strong> </strong>The aerial parts of <em>D. kotschyi </em>were collected from (Kamu Mountain) Isfahan province and the aerial parts of <em>D. moldavica</em> were collected from Sari (Mazandaran province) North of Iran, during 2014. The essential oil was extracted by a Clevenger approach and analyzed using GC/MS. In total, 32 and 24 compounds were identified in the essential oil from the aerial parts <em>D. kotschyi<strong> </strong></em>and <em>D. moldavica</em>, respectively. The results obtained in our study indicated that the major components in the oil <em>D. kotschyi<strong> </strong></em>were limonene (23.56 %), carvacrol (14.65 %), γ-terpinene (12.99 %), α -pinene (12.62 %), 2-methyl-1-octen-3-yne (9.73 %), camphene (4.66 %), myrcene (3.65 %) and α -terpinene (3.12 %). The major constituents of the oil <em>D. moldavica</em> were geranyl acetate (36.62 %), geraniol (24.31 %), neral (16.25 %) and geranial (11.21 %). <em>D. kotschyi </em>is one of the important sources of limonene and<em> D. moldavica </em>is one of the important sources of geranyl acetate.