Year: 2020 | Month: October | Volume 10 | Issue 5
Evaluation of Selected Essential Oils as Biocontrol Agents Against Listeria monocytogenes
Chinta Siva Swetha
Porteen Kannan
Elango A.
Ronald B.S.M.
Senthil Kumar T.M.A.
Sureshkannan Sundaram
DOI:10.30954/2277-940X.05.2020.19
Abstract:
The increased concern towards food safety led to application of natural extracts as antimicrobial agents to control food borne pathogens. The aim of the present study was to determine antimicrobial activity of the four essential oils viz., cinnamon bark, cinnamon leaf, clove bud and garlic oils against Listeria monocytogenes by agar well diffusion method. All these essential oils were characterized by Gas chromatography-mass spectrophotometer (GC-MS) to know the chemical constituents present in them. Out of these four oils, L. monocytogenes was found to be sensitive to cinnamon bark oil, followed by cinnamon leaf oil, clove bud oil and garlic oil. Further, all these oils were evaluated to know minimal inhibitory concentration (MIC) and the cinnamon bark oil alone was found to be effective with a MIC of 1% against L. monocytogenes. The present study findings suggest that plant based natural extracts might be used as antimicrobial, flavouring and food biopreservative agent.
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