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The effect of essential oils on methicillin-resistant Staphylococcus aureus using a dressing model
V Edwards-Jones1, R Buck, S G Shawcross
1Department of Biological Sciences, the Manchester Metropolitan University, Chester Street, Manchester, M15GD, UK. v.e.jones@mmu.ac.uk
Burns : Journal of the International Society for Burn Injuries
|November 24, 2004
Summary
Essential oils like geranium and tea tree show significant antibacterial activity against Staphylococcus aureus, including MRSA strains. These natural compounds, particularly in combination with grapefruit seed extract, hold potential for wound dressings and treating infections.
Area of Science:
- Microbiology
- Natural Product Chemistry
- Dermatology
Background:
- Staphylococcus aureus, including Methicillin-resistant Staphylococcus aureus (MRSA), poses a significant threat in healthcare settings.
- Essential oils and plant extracts are increasingly explored for their antimicrobial properties as alternatives to conventional antibiotics.
Purpose of the Study:
- To evaluate the antibacterial activity of various essential oils and grapefruit seed extract against different strains of Staphylococcus aureus.
- To assess the efficacy of essential oil combinations in a wound dressing model for treating S. aureus infections.
Main Methods:
- Essential oils (patchouli, tea tree, geranium, lavender) and Citricidal (grapefruit seed extract) were tested individually and in combination against S. aureus strains using agar diffusion assays.
- Antibacterial activity of essential oil vapors was also assessed.
- The most effective oil combinations were incorporated into a four-layer wound dressing model and tested for zones of inhibition.
Main Results:
- A combination of Citricidal and geranium oil demonstrated the strongest antibacterial effect against MRSA.
- Geranium and tea tree oil combination was most effective against the methicillin-sensitive S. aureus (Oxford strain).
- TelfaClear as a primary dressing layer yielded greater zones of inhibition compared to Jelonet.
Conclusions:
- Essential oils and their vapors exhibit promising antibacterial potential against Staphylococcus aureus, including MRSA.
- Specific essential oil combinations show targeted efficacy against different S. aureus strains.
- These findings suggest the utility of essential oils in developing novel wound care strategies for MRSA infections.