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Research
5.
Study on the antimicrobial activity and minimum
inhibitory concentration of essential oils of
spices -
A. Jagadeesh Babu, A. RupaSundari, J. Indumathi,
R. V. N. Srujan, M. Sravanthi
Vet World. 2011; 4(7): 311-316
doi: 10.5455/vetworld.2011.311-316
Abstract
Antibacterial activity and minimum inhibitory
concentration (MIC) of essential oils of garlic,
clove and cinnamon were estimated by using various
bacterial pathogens. Among the bacterial pathogens
tested against essential oil of garlic,
Staphylococcus aureus was found to be highly
sensitive followed by E.coli. L.monocytogenes and
S.pyogenes were found to be less sensitive. The
essential oil of clove was found to be most active
against S.aureus followed by E. coli. B.cereus and
C. jejuni. The essential oil of cinnamon was also
most active against S.aureus followed by E.coli
and C.jejuni. Essential oil of cinnamon was found
to be active against all the bacterial pathogens
tested, when compared to garlic and clove oils.
However Staph. aureus, E. coli and C.jejuni were
found to be most sensitive to the action of
essential oils of garlic, clove and cinnamon.
Among the bacterial pathogens tested against
essential oils of spices to know the MIC by agar
diffusion method, C.jejuni was found to be most
sensitive to the essential oil of garlic followed
by E.coli, S. typhimurium and Staphylococcus
aureus. L. monocytogenes and Methicillin resistant
Staph. aureus were found to be comparatively less
sensitive. Essential oil of clove was also found
to be highly effective against C.jejuni followed
by E.coli, S.typhimurium and S.aureus. Again
L.monocytogenes and Methicillin resistant S.aureus
were comparatively less sensitive to the action of
essential oil of clove. All most all the bacterial
pathogens tested were found to be sensitive to the
essential oil of cinnamon. However C.jejuni and
E.coli were found to be most sensitive followed by
S.typhimurium, Staph. aureus and Methicillin
resistant Staph. aureus .
Keywords: Essential oils of garlic, clove,
cinnamon, antimicrobial activity, minimum
inhibitory concentration.
