Figure 6.

Correlating H₂O₂-induced loss of ATP production with bacterial viability. H₂O₂-induced disruption of ATP production correlated statistically with abolishment of CFU viability for all organisms tested except PsA (p = 0.15) at concentrations up to 5 mM. Though the decline of ATP production in PsA for this oxidant was statistically significant in this range, the percent change remains independent of the percent reduction in CFU viability. Solid circles and lines: ATP recovery after oxidant exposure. Open circles and dotted lines: CFU viability. Both parameters are measured as percent relative to oxidant-free controls. P-values represent linear regression of the raw data values from percent ATP recovery versus CFU viability. Values less than 0.05 were considered significant and denote correlation between the parameters; values greater than 0.05 indicate independence of the parameters. Error bars represent standard deviation of at least n = 3 experiments.