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Santos B, Farias JHA, Simões MM, Medeiros MAA, Alves MS, Diniz AF, Soares APO, Cavalcante APTM, Silva BJN, Almeida JCS, Lemos JO, Rocha LES, Santos LC, Azevedo MLG, Vieira SWF, Araújo VE, Oliveira Filho AA. Evaluation of the antimicrobial activity of Eucalyptus radiata essential oil against Escherichia coli strains isolated from meat products. BRAZ J BIOL 2024; 84:e281361. [PMID: 38451631 DOI: 10.1590/1519-6984.281361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/14/2024] [Indexed: 03/08/2024] Open
Abstract
The present study sought to evaluate the antimicrobial and anti-adherent potential of Eucalyptus radiata essential oil against food-borne strains of Escherichia coli. The study was performed using the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC). In addition, the disk diffusion technique was used to evaluate the association of Eucalyptus radiata essential oil with synthetic antimicrobials. The Minimum Inhibitory Adherence Concentration (MIC) was also performed. The results revealed that E. radiata showed antimicrobial activity against the E. coli strains tested, with MIC values ranging from 500 μg/mL to 1000 μg/mL and MBC values ranging from 500 μg/mL to 1,024 μg/mL. As for the associations, it was observed that E. radiata oil exhibited a synergistic effect for some antibiotics, especially Ceftriaxone, with greater interference from the essential oil. Furthermore, it was effective in inhibiting the adherence of bacterial strains of E. coli, showing a more significant antibiofilm effect than the antibacterial agent 0.12% chlorhexidine digluconate. In summary, the essential oil of E. radiata showed antimicrobial potential against strains of E. coli of food origin, and can therefore, through in-depth studies, be used alone or in association with synthetic antimicrobials to combat infections caused by this pathogen.
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Affiliation(s)
- B Santos
- Universidade Federal de Campina Grande - UFCG, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - J H A Farias
- Universidade Federal de Campina Grande - UFCG, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - M M Simões
- Universidade Federal de Campina Grande - UFCG, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - M A A Medeiros
- Universidade Federal de Campina Grande - UFCG, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - M S Alves
- Universidade Federal de Campina Grande - UFCG, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - A F Diniz
- Universidade Federal de Campina Grande - UFCG, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - A P O Soares
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | | | - B J N Silva
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - J C S Almeida
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - J O Lemos
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - L E S Rocha
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - L C Santos
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - M L G Azevedo
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - S W F Vieira
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
| | - V E Araújo
- Universidade Federal de Campina Grande - UFCG, Patos, PB, Brasil
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