Antimicrobial and antioxidant activities of the essential oil and various extracts of Salvia tomentosa Miller (Lamiaceae) |
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| Affiliation: | 1. Department of Biology, Faculty of Science and Literature, Cumhuriyet University, 58140 Sivas, Turkey;2. Laboratory of General Chemistry, Agricultural University of Athens, Iera Odos 75, Athens 118 55, Greece;3. Department of Chemistry, Faculty of Science and Literature, Cumhuriyet University, 58140 Sivas, Turkey;1. School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People’s Republic of China;2. Anhui Province Key Laboratory of Functional Compound Seasoning, Anhui Qiangwang Seasoning Food Co., Ltd., Jieshou 236500, People’s Republic of China;1. Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, Jordan;2. Department of Applied Sciences, Faculty of Engineering Technology, Al-Balqa Applied University, Marka, Jordan;3. Department of Chemistry, Faculty of Science, The University of Jordan, Amman, Jordan;1. Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal;2. CEB, Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal;3. GIP-USAL, Faculty of Pharmacy, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain;1. Department of Biology and Pharmaceutical Botany, Medical University of Lodz, Muszyńskiego 1, 90-151 Lodz, Poland;2. Department of Pharmaceutical Microbiology and Microbiological Diagnostics, Medical University of Lodz, Pomorska 137, 90-235 Lodz, Poland;3. Department of Pharmacognosy and Molecular Basis of Phytotherapy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland;1. Laboratoire 3BS, Faculté des sciences biologiques et sciences agronomiques, Université Mouloud Mammeri de Tizi Ouzou, Tizi Ouzou, Algérie;2. Laboratoire 3BS, Faculté des sciences de la nature et de la vie, Université A. Mira de Bejaia, Bejaia, Algérie |
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| Abstract: | This study was designed to examine the in vitro antimicrobial and antioxidant activities of the essential oil and various extracts (prepared by using solvents of varying polarity) of Salvia tomentosa (Miller). The essential oil was particularly found to possess strong antimicrobial activity while other non-polar extracts and subfractions showed moderate activities while polar extracts remained almost inactive. GC and GC/MS analyses of the oil resulted in the identification of 44 compounds, representing 97.7% of the oil; β-pinene (39.7%), α-pinene (10.9%) and camphor (9.7%) were the main components. The samples were also subjected to screening for their possible antioxidant activity by using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and β-carotene-linoleic acid assays. In the first case, the free radical scavenging activity of aqueous methanol extract (MW) was superior to all other extracts (IC50=18.7 μg/ml). Polar extracts exhibited stronger activities than non-polar extracts. In the case of the linoleic acid system, oxidation of the linoleic acid was effectively inhibited by the polar subfraction of the MW extract, while the oil was less effective. The MW extract showed 90.6% inhibition, that is close to the synthetic antioxidant BHT. |
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