<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Background</bold>: In view of the high recurrence rate of urinary tract infections and the increasing number of germs resistant to multiple antibiotics, the aim of the present study was to evaluate the antibacterial properties of clove, oregano, thyme, eucalyptus, tea tree essential oils (EOs) against 32 isolates of Escherichia coli and 28 isolates of Klebsiella pneumoniae from patients with urinary tract infections (UTI).
<bold>Methods</bold>: The agar disk diffusion method was used to assess the susceptibility of these isolates to essential oils and the minimal inhibitory concentration (MIC), and the minimal bactericidal concentration (MBC) were determined.
<bold>Results</bold>: Our results suggest that volatile phenols (such as carvacrol in oregano EO, thymol in thyme EO, and eugenol in clove EO) are more efficacious as antibacterial than non-aromatic compounds (such as eucalyptol in eucalyptus EO and terpinene derivatives in tea tree EO).
<bold>Conclusion</bold> : The oregano EO, followed by thyme appear to have the highest efficacy against Escherichia coli and Klebsiella pneumoniae isolates investigated.
</abstract>

Background: In view of the high recurrence rate of urinary tract infections and the increasing number of germs resistant to multiple antibiotics, the aim of the present study was to evaluate the antibacterial properties of clove, oregano, thyme, eucalyptus, tea tree essential oils (EOs) against 32 isolates of Escherichia coli and 28 isolates of Klebsiella pneumoniae from patients with urinary tract infections (UTI).
Methods: The agar disk diffusion method was used to assess the susceptibility of these isolates to essential oils and the minimal inhibitory concentration (MIC), and the minimal bactericidal concentration (MBC) were determined.
Results: Our results suggest that volatile phenols (such as carvacrol in oregano EO, thymol in thyme EO, and eugenol in clove EO) are more efficacious as antibacterial than non-aromatic compounds (such as eucalyptol in eucalyptus EO and terpinene derivatives in tea tree EO).
Conclusion : The oregano EO, followed by thyme appear to have the highest efficacy against Escherichia coli and Klebsiella pneumoniae isolates investigated.

Antibacterial Activity of Clove, Oregano, Thyme, Eucalyptus, and Tea Tree Essential Oils against <italic>Escherichia coli</italic> and <italic>Klebsiella pneumoniae</italic> strains

“Carol Davila” University of Medicine and Pharmacy

“Carol Davila” University of Medicine and Pharmacy Bucharest

Revista Romana de Medicina de Laborator

This work is licensed under the Creative Commons Attribution 4.0 International License.

Antibacterial Activity of Clove, Oregano, Thyme, Eucalyptus, and Tea Tree Essential Oils against  and  strains

Background: In view of the high recurrence rate of urinary tract infections and the increasing number of germs resistant to multiple antibiotics, the aim of...

Antibacterial Activity of Clove, Oregano, Thyme, Eucalyptus, and Tea Tree Essential Oils against Escherichia coli and Klebsiella pneumoniae strains

Publié en ligne: 18 juil. 2022

Pages: 327 - 338

Reçu: 05 janv. 2022

Accepté: 12 mai 2022

DOI: https://doi.org/10.2478/rrlm-2022-0023

Mots clés
Escherichia coli, essential oils, urinary tract infections, Klebsiella pneumoniae

© 2022 Anda Băicuș et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Antibacterial Activity of Clove, Oregano, Thyme, Eucalyptus, and Tea Tree Essential Oils against Escherichia coli and Klebsiella pneumoniae strains

Publié en ligne: 18 juil. 2022

Pages: 327 - 338

Reçu: 05 janv. 2022

Accepté: 12 mai 2022

DOI: https://doi.org/10.2478/rrlm-2022-0023

Mots clésEscherichia coli, essential oils, urinary tract infections, Klebsiella pneumoniae

© 2022 Anda Băicuș et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
Escherichia coli, essential oils, urinary tract infections, Klebsiella pneumoniae