Chemical Composition of the Essential Oil of Salvia Persepolitana Boiss. Obtained by Solvent Free Microwave Extraction

Salvia the largest genus of the family Lamiacea, includes about 900 species widespread all over the world. Sixty species are found in Iran, seventeen of which are endemic [1]. Some of these species are used as medicinal, aromatic and ornamental plants. Salviaofficinalis L. is one of the most widespread species and since ancient time, has been used in the treatment of various disorders, such as tuberculosis, psoriasis and seborrheic eczema. Previous chemical investigations on different species of Salvia have shown the presence of flavonoids, diterpeniods and even the rare sesterterpenes [2].Theleaves and stems of Salvia persepolitana, which is endemic to Iran, was collected from Mehran, Province of Ilam, in July 2015. The essential oil obtained by solvent free microwave extraction (SFME) from the leaves and stems of the plant were analyzed by GC and GC/MS.Fortyfour components representing 90.0%of solvent free microwave extraction oil of Salviapersepolitana were identified.The main compounds were spathulenol (26.6%), bicyclogermacrene (14.4%) andβ-caryophyllene (14.8%).Other notable constituents were bornylacetate (7.2%) and δ-elemene (6.3%).The oil of the plant was characterized by large amounts of sesquiterpenes (73.7%) and small amount of monoterpenes (26.4%).Spathulenol (14.6%) was also the main component of the oil of S. urumiensis [3].