Potential application of Micromeria dalmatica essential oil as a protective agent in a food system
Marin, Petar D.
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Chemical composition of Micromeria dalmatica essential oil (EO) by gas chromatography mass spectrometry solid phase microextraction (GC/MS-SPME) analysis revealed that the dominant compounds were piperitenone (41.46\%), pulegone (19.02\%), piperitenone oxide (14.49\%), D-limonene (6.23\%) and p-menthone (5.06\%). The minimum inhibitory concentration (MIC) ranged from 0.03 to 2.32 mg/mL for bacteria, and from 0.62 to 2.49 mg/mL for yeast strains, while the minimum bactericidal/yeast-cidal concentration (MBC/MYC) varied from 0.07 to 1.15 mg/mL and 1.11-5.57 mg/mL for bacteria and yeasts, respectively. Growth inhibition concentration (GIC(50)) that caused 50\% of growth delay of Salmonella Typhimurium in pork meat system was calculated to be 0.048 mg/mL. Experimental results suggest that M. dalmatica EO possess high antimicrobial efficacy against food spoilage microorganisms. The present study has certainly set up an attractive platform for commercial applications of EO as natural preservative in food, such as pork meat. (C) 2015 Elsevier Ltd. All rights reserved.