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Brazilian Journal of Food Technology

versão On-line ISSN 1981-6723

Resumo

PEREIRA, Lívio Antônio Silva et al. Sanitizing cinnamaldehyde solutions against Pseudomonas aeruginosa biofilms formed on stainless steel surfaces. Braz. J. Food Technol. [online]. 2019, vol.22, e2018144.  Epub 16-Maio-2019. ISSN 1981-6723.  https://doi.org/10.1590/1981-6723.14418.

Pseudomonas aeruginosa is an opportunistic pathogen capable of forming biofilms of great relevance to medical microbiology and the food industry. Essential oil (EOs) constituents have been researched as new strategies for the control of biofilms. In the present study cinnamaldehyde was shown to be an effective EO against the planktonic cells of P. aeruginosa strains (p < 0.05). Thus it was used to prepare sanitizing solutions, which were tested against P. aeruginosa biofilms formed on stainless steel surfaces. Cinnamaldehyde showed antibacterial activity against sessile P. aeruginosa cells (p < 0.05). A 100% (5.87 log-reduction) elimination of viable bacterial cells was obtained after treatment with a 6xMIC (0.06% Minimal Inhibitory Concentration) solution for the strain ATCC 9027. Sanitizing cinnamaldehyde solutions can be used as new alternatives to control such microbial sessile communities in food industries.

Palavras-chave : Essential oil constituent; Natural sanitizing solution; Bacterial adhesion; Bacterial biofilms; Industrial surfaces; Pseudomonas aeruginosa.

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