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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Sep 2014, 35 (5)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Antimicrobial activity of the essential oils of three species

of Pogostemon

 

 

J.E. Thoppil1*, A. Tajo1, J. Minija1, M.J. Deena1, K. Sreeranjini1, L. Leeja1, M. Sivadasan2 and A.H. Alfarhan2

1Cell and Molecular Biology Division, Department of Botany, University of Calicut, Calicut–673 635, India

2Department of  Botany and Microbiology, College of Science, King Saud University, P.B. No. 2455, Riyadh–11451, Kingdom of Saudi Arabia

*Corresponding Authors Email : jethoppil@gmail.com

 

 

 

Publication Data

Paper received:

10 January 2013

 

Revised received:

25 July 2013

 

Re-revised received:

05 September 2013

 

Accepted:

31 October 2013

 

Abstract

Antimicrobial studies on 7 strains of bacteria and 8 strains of fungi using disk diffusion assay, revealed potential activities of crude essential oils in Pogostemon  benghalensis, P. purpurascens and P. vestitus. Essential oils produced highest inhibition zones against Staphylococcus aureus (39.33, 37.33 and 35.67 mm for P. benghalensis essential oil) and Candida albicans (34.33, 26.33 and 17.67 mm for P. purpurascens essential oil) among bacteria and fungi respectively, when compared with pure reference standards (35 mm for Gentamycin sulphate (40 mg ml-1) against S. aureus and 30.33 mm for Nystatin [50 IU] against C. albicans). Results also indicated the existence of potential antimicrobial activity of Pogostemon essential oils against other microorganisms viz., Proteus vulgaris, E. coli and Aspergillus parasiticus. Leaf essential oils of P. purpurascens and P. benghalensis can be considered as a new source for developing local antifungal and antibacterial agents. An attempt was made to highlight the promising plant species for further investigation which leads to drug development.  

 

 Key words

Antibacterial, Antifungal, Antimicrobial, Lamiaceae, Pogostemon

 

 

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