Figure 7.

Antibacterial property of fine-particle bombardment (FPB)-treated surface against E. coli. (a, c) Normal antibacterial property test with an E. coli concentration of (a) 7.3 × 10⁵ CFU/mL and (c) 1.1 × 10⁶ CFU/mL. (b, d) Antibacterial property test using (b) bacterial solution (2.7 × 10⁵ CFU/mL E. coli in a sterile saline solution containing 1.0% w/v sodium pyruvate) and rinse-away solution containing 1.0 w/v% sodium pyruvate and (d) bacterial solution (1.1 × 10⁶ CFU/mL E. coli) and 1.0 w/v% sodium pyruvate added only to the rinse-away solution. Error bars are standard error.