FIGURE 1.

Residual charge of live Escherichia coli on the BGs surfaces after 24 hr incubation at 30°C. Inoculum was diluted in NB/500 medium supplemented (green bars) or not (yellow bars) with 200 mM phosphate buffer (pH 7.0). Controls were incubated in the absence of BGs. The reported data (enumeration in LB plates) are means ± standard deviations of three independent experiments