The Essential Oils Composition of Salvia mirzayanii

Essential oil of Salvia mirzayanii cultivated in Iran was obtained by hydrodistillation and microwave assisted extraction (MAE) methods. The oils were analysed by capillary gas chromatography using flame ionization and mass spectrometric detections. The compounds were identified according to their retention indices and mass spectra (EI, 70 eV). The effects of different parameters, such as microwave radiation power, temperature and type of solvent on the MAE of Salvia mirzayanii oil were investigated. Several solvents were used in MAE such as methanol, ethanol and hexane. Results show that methanol is the best solvent in the experiments. It is well discussed that the extraction rate of essential oil of Salvia mirzayanii is increased with the increase of dielectric constant of solvent. The extraction yield based on hydrodistillation was 1.7 % (w/w). Extraction yield based on the MAE in optimum conditions, was 13.5 % (w/w). The results revealed that, in Iranian Salvia mirzayanii oil, Linalyl acetate is a major component.