Study on the Antimicrobial activity and Minimum Inhibitory Concentration of Essential Oils of Spices

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 .

Antibiotic Efficacy of Cinnamon (Cinnamon zeylanicum) against Urinary Pathogens in Type II Diabetic Men

“…The efficacy of essential oil of cinnamon in inhibiting human bacterial pathogens was determined by many researchers with varying reports depending upon the microorganism tested. The results of the present study were in agreement with previous reports demonstrating the inhibition of E. coli by cinnamon (2,3).…”

“…The results of this study indicated that the bacterial pathogen tested against the cinnamon extracts was highly sensitive to its action and was comparable to earlier reports (2). Use of cinnamon as alternative in the control of urinary tract infection may help to circumvent dysbiosis and microbial drug resistance induced by the repeated use of antibiotics.…”

Antibacterial activity of herbal mouth wash against clinical isolates of oral bacteria

“…In our study a poly herbal mouth wash showed a comparable result when tested against VGS with known antibiotic viz., ampicillin. In a study pudina extract at 50% concentration showed a comparable zone of inhibition to that of our [13] reported that clove showed an inhibitory zone of 18 mm against S.pyogenes which exactly corroborates with our result. To conclude our mouth wash had an excellent antibacterial activity against both the tested oral bacteria.…”

Potential of Herbal Drug and Antibiotic Combination Therapy: A New Approach to Treat Multidrug Resistant Bacteria

“…Antibacterial activity of essential oil of cinnamon was maximum against Staphylococcus aureus [105] followed by E. coli and Campylobacter jejuni [106].…”