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Chemical Composition and In Vitro Antibacterial Activity of Mint against Common Food-Borne Pathogenic Bacteria



Type of Spiritual Experience


The Essential oil has to be used for testing, however, eating mint is the answer - or mint tea!

A description of the experience

J Pathog. 2015;2015:916305. doi: 10.1155/2015/916305. Epub 2015 Aug 16.

Chemical Composition and In Vitro Antibacterial Activity of Mentha spicata Essential Oil against Common Food-Borne Pathogenic Bacteria.

Shahbazi Y1.

The aim of the present study was to investigate chemical composition and antibacterial activity of essential oil from the leaf of Mentha spicata plant against common food-borne pathogenic bacteria:

  • (Staphylococcus aureus,
  • Bacillus subtilis,
  • Bacillus cereus,
  • Listeria monocytogenes,
  • Salmonella typhimurium, and
  • Escherichia coli O157:H7

Chemical composition of the essential oil was identified by gas chromatography coupled with mass spectrometer detector (GC-MS). The antibacterial activity of the essential oil was evaluated by broth microdilution method and agar disk diffusion assay.

According to the result of GC-MS analysis, 18 components were identified, accounting for 99.89% of the whole essential oil. The main components were carvone (78.76%), limonene (11.50%), β-bourbonene (11.23%), cis-dihydrocarveol (1.43%), trans-caryophyllene (1.04%), menthone (1.01%), menthol (1%), and terpinen-4-ol (0.99).

The essential oil exhibited moderate level of antibacterial activity against all test microorganisms. In general, Gram-positive bacteria were more susceptible to M. spicata essential oil than Gram-negative bacteria.

L. monocytogenes was the most sensitive of the microorganisms to the antibacterial activity of M. spicata essential oil (inhibition zone = 22 mm and MIC and MBC = 2.5 µL/mL).

Based on our results, the essential oil of M. spicata plant collected from Kermanshah province, west of Iran, has a potential to be applied as antibacterial agent.



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