What question did this study set out to answer?

To systematically compare the antimicrobial spectrum and potency of 52 plant essential oils and extracts against ten common bacterial and fungal pathogens using standardized dilution assays.

June 1, 1999Journal of Applied Microbiology

Antimicrobial activity of essential oils and other plant extracts

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Authors

KHKatherine A. HammerThe University of Western Australia CCChristine CarsonThe University of Western Australia TRT. V. RileyThe University of Western Australia

Discussion

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Overview

In vitro comparative study reveals strong antimicrobial effects of specific plant essential oils against diverse bacterial and fungal pathogens, suggesting utility as natural preservatives.

Key Points

To systematically compare the antimicrobial spectrum and potency of 52 plant essential oils and extracts against ten common bacterial and fungal pathogens using standardized dilution assays.
Screened 52 plant oils and extracts against 10 microbial species, including Acinetobacter baumannii, Candida albicans, and Staphylococcus aureus, using an agar dilution method at concentrations up to 2.0% (v/v).
Assayed 20 plant oils using a broth microdilution method to determine minimum inhibitory concentrations (MICs) against C. albicans, S. aureus, and Escherichia coli.
Lemongrass, oregano, and bay oils completely inhibited all 10 tested microorganisms at concentrations ≤ 2.0% (v/v), while six oils (apricot kernel, evening primrose, macadamia, pumpkin, sage, and sweet almond) showed no inhibition at 2.0% (v/v).
Broth microdilution identified lowest minimum inhibitory concentrations of 0.03% (v/v) for thyme oil against C. albicans and E. coli, and 0.008% (v/v) for vetiver oil against S. aureus.

Cite This Study

Hammer et al. (1999) studied this question.

synapsesocial.com/papers/69d761f2ef4aa71f97f310eb https://doi.org/10.1046/j.1365-2672.1999.00780.x

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June 1, 1999Journal of Applied Microbiology

Antimicrobial activity of essential oils and other plant extracts

View Full Paper

Ask AI

Bookmark

Authors

KHKatherine A. HammerThe University of Western Australia CCChristine CarsonThe University of Western Australia TRT. V. RileyThe University of Western Australia

Discussion

Member takes

Overview

In vitro comparative study reveals strong antimicrobial effects of specific plant essential oils against diverse bacterial and fungal pathogens, suggesting utility as natural preservatives.

Key Points

To systematically compare the antimicrobial spectrum and potency of 52 plant essential oils and extracts against ten common bacterial and fungal pathogens using standardized dilution assays.
Screened 52 plant oils and extracts against 10 microbial species, including Acinetobacter baumannii, Candida albicans, and Staphylococcus aureus, using an agar dilution method at concentrations up to 2.0% (v/v).
Assayed 20 plant oils using a broth microdilution method to determine minimum inhibitory concentrations (MICs) against C. albicans, S. aureus, and Escherichia coli.
Lemongrass, oregano, and bay oils completely inhibited all 10 tested microorganisms at concentrations ≤ 2.0% (v/v), while six oils (apricot kernel, evening primrose, macadamia, pumpkin, sage, and sweet almond) showed no inhibition at 2.0% (v/v).
Broth microdilution identified lowest minimum inhibitory concentrations of 0.03% (v/v) for thyme oil against C. albicans and E. coli, and 0.008% (v/v) for vetiver oil against S. aureus.

Cite This Study

Hammer et al. (1999) studied this question.

synapsesocial.com/papers/69d761f2ef4aa71f97f310eb https://doi.org/10.1046/j.1365-2672.1999.00780.x

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