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. 2019 Dec 6;20(24):6150. doi: 10.3390/ijms20246150

Figure 6.

Figure 6

Activity of PDDA against E. coli in original dispersions (○), their precipitates () and supernatants (). Dispersions are PMMA/ PDDA (a) or PMMA/PDDA/amphiphile where the amphiphile is CTAB (b), DODAB (c) or lecithin (d). Original dispersions are those obtained after exhaustive dialysis. Cells and dispersions or supernatants interacted for 1 h before plating for CFU counting. Dialysates were centrifuged (9000 g/40 min.) in order to separate NPs and supernatant for further separate the antimicrobial activity from the supernatant and the precipitate.