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In vitro antibacterial activity of some plant essential oils

BACKGROUND: To evaluate the antibacterial activity of 21 plant essential oils against six bacterial species. METHODS: The selected essential oils were screened against four gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus vulgaris) and two gram-positiv...

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Autores principales: Prabuseenivasan, Seenivasan, Jayakumar, Manickkam, Ignacimuthu, Savarimuthu
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2006
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1693916/
https://www.ncbi.nlm.nih.gov/pubmed/17134518
http://dx.doi.org/10.1186/1472-6882-6-39
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author Prabuseenivasan, Seenivasan
Jayakumar, Manickkam
Ignacimuthu, Savarimuthu
author_facet Prabuseenivasan, Seenivasan
Jayakumar, Manickkam
Ignacimuthu, Savarimuthu
author_sort Prabuseenivasan, Seenivasan
collection PubMed
description BACKGROUND: To evaluate the antibacterial activity of 21 plant essential oils against six bacterial species. METHODS: The selected essential oils were screened against four gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus vulgaris) and two gram-positive bacteria Bacillus subtilis and Staphylococcus aureus at four different concentrations (1:1, 1:5, 1:10 and 1:20) using disc diffusion method. The MIC of the active essential oils were tested using two fold agar dilution method at concentrations ranging from 0.2 to 25.6 mg/ml. RESULTS: Out of 21 essential oils tested, 19 oils showed antibacterial activity against one or more strains. Cinnamon, clove, geranium, lemon, lime, orange and rosemary oils exhibited significant inhibitory effect. Cinnamon oil showed promising inhibitory activity even at low concentration, whereas aniseed, eucalyptus and camphor oils were least active against the tested bacteria. In general, B. subtilis was the most susceptible. On the other hand, K. pneumoniae exhibited low degree of sensitivity. CONCLUSION: Majority of the oils showed antibacterial activity against the tested strains. However Cinnamon, clove and lime oils were found to be inhibiting both gram-positive and gram-negative bacteria. Cinnamon oil can be a good source of antibacterial agents.
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spelling pubmed-16939162006-12-09 In vitro antibacterial activity of some plant essential oils Prabuseenivasan, Seenivasan Jayakumar, Manickkam Ignacimuthu, Savarimuthu BMC Complement Altern Med Research Article BACKGROUND: To evaluate the antibacterial activity of 21 plant essential oils against six bacterial species. METHODS: The selected essential oils were screened against four gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus vulgaris) and two gram-positive bacteria Bacillus subtilis and Staphylococcus aureus at four different concentrations (1:1, 1:5, 1:10 and 1:20) using disc diffusion method. The MIC of the active essential oils were tested using two fold agar dilution method at concentrations ranging from 0.2 to 25.6 mg/ml. RESULTS: Out of 21 essential oils tested, 19 oils showed antibacterial activity against one or more strains. Cinnamon, clove, geranium, lemon, lime, orange and rosemary oils exhibited significant inhibitory effect. Cinnamon oil showed promising inhibitory activity even at low concentration, whereas aniseed, eucalyptus and camphor oils were least active against the tested bacteria. In general, B. subtilis was the most susceptible. On the other hand, K. pneumoniae exhibited low degree of sensitivity. CONCLUSION: Majority of the oils showed antibacterial activity against the tested strains. However Cinnamon, clove and lime oils were found to be inhibiting both gram-positive and gram-negative bacteria. Cinnamon oil can be a good source of antibacterial agents. BioMed Central 2006-11-30 /pmc/articles/PMC1693916/ /pubmed/17134518 http://dx.doi.org/10.1186/1472-6882-6-39 Text en Copyright © 2006 Prabuseenivasan et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Prabuseenivasan, Seenivasan
Jayakumar, Manickkam
Ignacimuthu, Savarimuthu
In vitro antibacterial activity of some plant essential oils
title In vitro antibacterial activity of some plant essential oils
title_full In vitro antibacterial activity of some plant essential oils
title_fullStr In vitro antibacterial activity of some plant essential oils
title_full_unstemmed In vitro antibacterial activity of some plant essential oils
title_short In vitro antibacterial activity of some plant essential oils
title_sort in vitro antibacterial activity of some plant essential oils
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1693916/
https://www.ncbi.nlm.nih.gov/pubmed/17134518
http://dx.doi.org/10.1186/1472-6882-6-39
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