Antibiofilm activities and in vitro susceptibility testing of eucalyptus (Eucalyptus camaldulensis) essential oil (EO) against fish pathogen Pseudomonas species


Bektaş S., Özdal M., Gürkök S.

The Trout Journal of Atatürk University, cilt.1, sa.1, ss.8-14, 2023 (Hakemli Dergi)

Özet

Essential oils are concoctions of aromatic and volatile chemicals extracted from several plant species. These mixes have been used by society for a variety of reasons, and they play significant functions in nature. This study aimed to analyze the biological properties of essential oil extracted from Eucalyptus camaldulensis leaves, including its antipseudomonal and antibiofilm effects. Antibiotics have been heavily used both to treat bacterial infections and to stimulate fish growth, which has led to the emergence of germs that are resistant to the drugs. The study inoculums have been defined by the McFarland 0.5 standard and disk diffusion method has been used to analyze antimicrobial activity. The essential oils from E. camaldulensis possessed antibacterial activity against tested Pseudomonas aeruginosa, P. fluorescens, and P. putida at 5-10 μg/disc. The antibacterial effect has been established to be dependent on the concentration. Our findings showed that E. camaldulensis essential oil has been a great source of antipseudomonal, and also exhibited inhibition of Pseudomonas species biofilm formation. Based on its antibacterial and antibiofilm potential, E. camaldulensis essential oil shows promise as a potential source of antibacterial agents. Therefore, the use of E. camaldulensis essential oil in applications may have the potential to be a natural antibacterial agent against pathogenic and spoiling microorganisms.