Figure 2.

Persister cells of B. cereus and P. fluorescens after BAC, GA, GO, and PAA treatment (continuous bars) and regrown biofilms (dashed bars). Control corresponds to the untreated biofilms. Values are mean ± SDs of three independent assays with two replicates. ▪—No culturable persister/regrown cells were detected (<1.5-log CFU/cm²). *—Initial persister cells were statistically different from regrown biofilms of persister cells (unpaired t-test with Welch’s correction, p < 0.05); a—persister cells were statistically different from untreated cells (control) (Dunnett’s multiple comparisons test, p < 0.05); b—regrown biofilms of persister cells were statistically different from regrown biofilms of untreated cells (control) (Dunnett’s multiple comparisons test, p < 0.05).