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      Antibacterial and Antifungal Properties of Essential Oils

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      Current Medicinal Chemistry
      Bentham Science Publishers Ltd.

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          Abstract

          In recent years there has been an increasing interest in the use of natural substances, and some questions concerning the safety of synthetic compounds have encouraged more detailed studies of plant resources. Essential oils, odorous and volatile products of plant secondary metabolism, have a wide application in folk medicine, food flavouring and preservation as well as in fragrance industries. The antimicrobial properties of essential oils have been known for many centuries. In recent years (1987-2001), a large number of essential oils and their constituents have been investigated for their antimicrobial properties against some bacteria and fungi in more than 500 reports. This paper reviews the classical methods commonly used for the evaluation of essential oils antibacterial and antifungal activities. The agar diffusion method (paper disc and well) and the dilution method (agar and liquid broth) as well as turbidimetric and impedimetric monitoring of microorganism growth in the presence of tested essential oils are described. Factors influencing the in vitro antimicrobial activity of essential oils and the mechanisms of essential oils action on microorganisms are reported. This paper gives an overview on the susceptibility of human and food-borne bacteria and fungi towards different essential oils and their constituents. Essential oils of spices and herbs (thyme, origanum, mint, cinnamon, salvia and clove) were found to possess the strongest antimicrobial properties among many tested.

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          Author and article information

          Journal
          Current Medicinal Chemistry
          CMC
          Bentham Science Publishers Ltd.
          09298673
          May 01 2003
          May 01 2003
          : 10
          : 10
          : 813-829
          Article
          10.2174/0929867033457719
          12678685
          55e12509-780a-49c1-aaef-e6cb9c80b684
          © 2003
          History

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