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. 2010 Jul 20;5(7):e11674. doi: 10.1371/journal.pone.0011674

Figure 5. Photoinactivation of E. Coli by THPTS.

Figure 5

Photoinactivation of E. coli (DSM8698) by THPTS photosensitizer (PS) after incubation times of 30; 90 and 180min in PBS (A) or in PBS+10% HS (B). Viability of bacterial cells was determined by a CFU assay. 100µM of THPTS for 90min, or 10µM for 180min were sufficient to obtain an efficient bactericidal effect. However, serum addition reduced the efficiency of the treatment without abolishing it when THPTS was incubated for 90min. Each bar is the mean ± standard deviation of three experiments (P<0.005). CD: control in the dark, CL: control with light, PI: photoinactivation.