Biofilm destruction activity of α-tocopherol against Staphylococcus aureus, Proteus mirabilis, and Pseudomonas aeruginosa.

FEMS Microbiol Lett

School of Science, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia.

Published: January 2025


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Article Abstract

Antibiotic resistance and the persistence of sessile cells within biofilms complicate the eradication of biofilm-related infections using conventional antibiotics. This highlights the necessity for alternate therapy methods. The objective of this study was to investigate the biofilm destruction activity of α-tocopherol against Staphylococcus aureus, Proteus mirabilis, and Pseudomonas aeruginosa on polystyrene. α-Tocopherol showed significant biofilm destruction activity on the pre-formed biofilms of S. aureus (45%-46%), Pr. mirabilis (42%-54%), and Ps. aeruginosa (28%). Resazurin assay showed that α-tocopherol disrupted all bacterial biofilms without interfering with their cell viability. Scanning electron microscope images showed lower bacterial cell count and less compacted cell aggregates on polystyrene surfaces after treatment with α-tocopherol. This study demonstrated the biofilm destruction activity of α-tocopherol against S. aureus, Pr. mirabilis, and Ps. aeruginosa. α-Tocopherol could potentially be used to decrease biofilm-associated infections of these bacteria.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11992689PMC
http://dx.doi.org/10.1093/femsle/fnaf020DOI Listing

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