Antimicrobial activity of selected essential oils against cariogenic bacteria

Antimicrobial activity of selected essential oils against cariogenic bacteria

The antibacterial activity of nine selected essential oils (EOs) against a panel of oral pathogens was investigated in terms of their minimum inhibitory concentrations (MICs) by using the broth microdilution method. Most of the EOs displayed weak activity or were inactive against the selected oral p...

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Bibliographic Details
Published in:Natural product research Vol. 27; no. 18; pp. 1668 - 1672
Main Authors: Aguiar, G.P., Carvalho, C.E., Dias, H.J., Reis, E.B., Martins, M.H.G., Wakabayashi, K.A.L., Groppo, M., Martins, C.H.G., Cunha, W.R., Crotti, A.E.M.
Format: Journal Article
Language:English
Published: England Taylor & Francis Group 01-09-2013
Subjects:
Anti-Infective Agents - chemistry
Anti-Infective Agents - pharmacology
Asteraceae
Asteraceae - chemistry
Bacteria - drug effects
Bidens
Bidens sulphurea
essential oils
Oils, Volatile - chemistry
Oils, Volatile - pharmacology
oral pathogens
Sesquiterpenes - chemistry
Sesquiterpenes - pharmacology
Sesquiterpenes, Germacrane - chemistry
Sesquiterpenes, Germacrane - pharmacology
Streptococcus mitis
Streptococcus mutans
Streptococcus mutans - drug effects
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Summary:The antibacterial activity of nine selected essential oils (EOs) against a panel of oral pathogens was investigated in terms of their minimum inhibitory concentrations (MICs) by using the broth microdilution method. Most of the EOs displayed weak activity or were inactive against the selected oral pathogens, with MIC values ranging from 500 to 4000 μg/mL. However, the EO obtained from the leaves of Bidens sulphurea (Asteraceae) was found to display moderate activity against Streptococcus mutans (MIC = 250 μg/mL) and significant activity against Streptococcus mitis (MIC = 31.25 μg/mL). Germacrene D (38.3%), trans-caryophyllene (18.0%), β-elemene (13.9%) and bicyclogermacrene (13.1%) were identified as the main chemical components of this oil. 2,6-Di-tert-butyl-4-methylphenol, previously described as the major constituent in the EO from the flowers of B. sulphurea, was not detected in this study.
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ISSN:1478-6419
1478-6427
DOI:10.1080/14786419.2012.751595