Figure 1. Antibacterial effects of flavonoids in A. conyzoides on S. aureus, E. coli and P. aeruginosa. (A–C) The growth curves of S. aureus, E. coli and P. aeruginosa upon the administrations of gradient doses of flavonoids in A. conyzoides, respectively. The horizontal coordinate represents the reaction time, and the vertical coordinate represents the absorption value at 600 nm. (D) Flavonoids in A. conyzoides significantly enlarged the bacteriostatic circles of S. aureus, E. coli and P. aeruginosa in a concentration-dependent manner. * P< 0.05 compared with treated groups; #<0.05 compared with group 1.25 mg/mL.