Figure 2. Effects of flavonoids in A. conyzoides on the conductivity of bacterial culture medium and the nucleic acid exudation in S. aureus, E. coli and P. aeruginosa. (A) Compared to the control group, flavonoids in A. conyzoides significantly elevated the culture medium conductivities of S. aureus, E. coli and P. aeruginosa to the peak after administrated for 2 hours. Such conductivities dropped to a relative steady status since the 4th hour. (B–D) The absorption value at 260 nm was recorded, which represents the nucleic acid exudation in bacteria. Upon the administration of flavonoids in A. conyzoides for 2 hours, the nucleic acid exudation in S. aureus, E. coli and P. aeruginosa was remarkably raised to the peak, followed by a relative steady status, respectively.