Abstract
This study, it was aimed to investigate the antibacterial and antibiofilm activity of cis and trans-vaccenic acid against Pseudomonas aeruginosa. In the study, four different P. aeruginosa strains were used. Antibacterial activity was determined by microdilution and growth curve. The antibiofilm activity was determined by crystal violet assay. In addition, the effect of vaccenic acids on pyocyanin production was investigated. The minimum inhibitory concentration (MIC) of cis and trans-vaccenic acid against all strains was determined as 128-256 μg/mL, and the minimum biofilm inhibitory concentration (MBIC) value was 8-512 μg/mL. While vaccenic acids reduced cell growth in three strains, they also significantly inhibited pyocyanin production. In one strain, it inhibited biofilm formation without affecting cell growth. As a result, the presence of antibacterial and antibiofilm activity of cis and trans-vaccenic acid against P. aeruginosa was determined as potential agents in the fight against this bacteria.
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