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Articles by S. Shafiei
Total Records ( 2 ) for S. Shafiei
  H. Rostami , M. Kazemi and S. Shafiei
  Aromatic and medicinal plants are widespread throughout world. Essential oils obtained from different aromatic and medicinal plants parts have been shown antibacterial, antifungal, antiviral and antioxidant properties. The experiment was started in season 2010-2011. In this study we studied the chemical compositions of essential oils of Lavandula officinalis and Melissa officinalis and also tested antibacterial and anticandidal activities of essential oils. The essential oils of Lavandula officinalis and Melissa officinalis collected in Iran were obtained by hydrodistillation of the aerial parts and analysed by gas chromatography equipped with flame ionisation detector (GC-FID) and gas chromatography coupled to a mass spectrometry system (GC/MS) for their chemical composition. The main constituents of leave oils were α-pinene, Camphor, Menthol, 1,8-Cineole, β-pinene, linalool, thymol and carvacrol. This experiment indicated that the bacterial strains were sensitive to studied essential oils and also showed very effective bactericidal activity with the strongest inhibition zone. Among the eight of tested essential oil components, thymol, carvacrol and menthol showed the highest antibacterial activities than previous components and streptomycin while, β-Pinene and linalool showed lower antibacterial activity than streptomycin (p = 0.05). Essential oils of Lavandula officinalis and Melissa officinalis possess great antibacterial potential and could be used as natural preservatives and fungicides.
  M. Kazemi , H. Rostami and S. Shafiei
  The objective of the research was to determine the chemical compositions and antibacterial and antifungal activity of essential oils from 4 medicinal plants consist of Mentha piperita, Mentha spicata, Anethum graveolens and Foeniculum vulgare. Antibacterial and antifungal activity of these oils and their components were assayed against a variety of human pathogenic bacteria. Main components in Mentha piperita oil were menthol, limonene, 1,8-cineole, sabinene, menthyl acetate and menthone, in Mentha spicata oil carvone, menthol, limonene and menthone, in Anethum graveolens leaves oil α-phellandrene, Dill ether and β-phellandrene and in Foeniculum vulgare oil terpin-4-ol, t-anethole, fenchone and estragole. Present results showed that oils extracted from leaves of Anethum graveolens and Foeniculum vulgare plants did not show antibacterial or antifungal activities. Mentha piperita showed strong antibacterial and antifungal activities, however, lower than Mentha spicata. Carvone possessed the highest antibacterial and antifungal activity among the tested components. Essential oils of Mentha species possess great antibacterial and antifungal potential and could be used as natural preservatives and fungicides.
 
 
 
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