FIGURE 1.

Effects of flavonoids on A. baumannii biofilm formation. Chemical structures of the flavonoids used in this study (A). Effect of flavonoids on A. baumannii ATCC 17978 biofilm formation in TSB medium at 37°C after 24 h in 96-well plates. Total biofilm formation (OD₅₇₀) in the presence of each flavonoid. All flavonoids were used at 50 μg/ml, except luteolin, which was used at 25 μg/ml because of its antimicrobial activity (B). Dose-dependent effects of fisetin, phloretin, and curcumin on A. baumannii ATCC 17978 biofilm formation (C). *p < 0.05 versus untreated controls.