Background & Aim:The genus Salvia (commonly known as sage) is a broad genus belonging to the family Lamiaceae. This study is aimed at assessing the essential oil composition and antimicrobial activities of two Salvia species. Experimental: The chemical composition of the essential oils of Salvia officinalis L. and Salvia virgata Jacq, cultivated in Estahban (Fars, South Iran), was studied by means of GC-MSanalyses. Antimicrobial activity was tested against a panel of microorganisms including one Gram-positive (Staphylococcus epidermidis PTCC NO. 1435) and one Gram-negative (Escherichia coli) and three fungal strain (Alternaria alternata PTCC NO. 5224, Penicillium funiculosum PTCC NO. 5301 and P. funiculosum PTCC NO. 5169) using the disk diffusion and agar-well diffusion methods and the Minimum Inhibitory Concentration (MIC) technique. Results: In all, 57 compounds were identified, 42 for S. officinalis, accounting for 98.94% ofthe total oil, 29 for S. virgata (98.81%). The major components of S. officinalis essential oil were α-thujone (37.18%), 1,8-cineole (12.71%), β-thujone (9.10%) and the major components of S. virgata essential oil were caryophyllene oxide (30.23%), β-caryophyllene (22.63%), sabinene (11.82%). The antimicrobial activity of the total essential oil evaluated by the agar-well diffusion method, the results showed that the highest active against S. epidermidis and also the least active against E. coli. Inhibition of growth was tested by the disk diffusion method, the results showed that essential oil of S. officinalis and S. virgata were highest active against E. coli and P. funiculosum (PTCC NO. 5301), respectively. Also the least active against A. alternata. Recommended applications/industries: The results showed thatS. officinalis oil had higher antimicrobial activity compare to S. virgata تفاصيل المقالة

Background & Aim:Mentha longifolia (L.) Huds is an aromatic perennial herb that belongs to the family Lamiaceae. The aim of this study was to identify chemical composition of aerial parts (including leaf, stem and flowers) of M. longifolia collected from (Kamu mountain) Isfahan province. Experimental: The essential oils were extracted using the hydrodistillation method and analysed by GC-MS. Results: The essential oil yields obtained from the aerial parts of M. Longifolia were1.34, 0.76 and 0.97 ml/100 g dry matter in leaf, stem and flowers, respectively. Results indicated significant differences (p < 0.01) among the aerial parts for the main constituents in the essential oil. The major constituents of the leaf oil were 1,8-cineole (37.16%), piperitenone oxide (18.97%), sabinene (13.94%), α-pinene (8.92%) and pulegone (6.14%). The major constituents of the stem oil were 1,8-cineole (36.81%), pulegone (18.61%), piperitenone oxide (12.21%), sabinene (7.05%) and the major constituents of the flower oil were piperitenone oxide (37.67%), 1,8-cineole (23.02%), sabinene (13.56%) and α-pinene (10.45%).Recommended applications/industries: Differences in the volatile composition of the plant material could be attributed to the growth and cultivation conditions of the plant, to the methods of extraction and to the harvesting time. تفاصيل المقالة

Background & Aim: The aim of this study was to investigate the antibacterial, antifungal properties and chemical composition screening of essential oils of Satureja khuzestanica Jamzad and Satureja hortensis L. Experimental: For determination of antibacterial and antifungal activity of these essential oils, Staphylococcus aureus and Candida albicans were targeted, respectively. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of each essential oil were determined individually. Also, chemical composition of essential oils was identified and characterized by gas chromatography armed by mass spectrometry (GC–MS). Results: The total of 22 and 21 compounds were identified in the essential oils of aerial parts of S. hortensis and S. khuzestanica, respectively. The major components of S. hortensis essence were carvacrol (56.36%), γ-terpinene (24.75%), p-cymene (5.81%) and the major constituents of S. khuzestanica essence was reported carvacrol (69.62%), γ-terpinene (9.25%) and p-cymene (8.36%). The obtained results showed the antibacterial and antifungal activity of both extracted essential oils against the tested pathogens. The MIC and MBC of S. hortensis and S. khuzistanica essential oils against S. aureus were determined 0.1 and 0.5 μl/ml, and 0.1 and 0.2 μl/ml against C. albicans, respectively. Recommended applications/industries: The results showed that S.hortensis oil had higher antimicrobial activity compare to S. khuzistanica. تفاصيل المقالة