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. 2022 Feb 13;12(2):215. doi: 10.3390/membranes12020215

Figure 5.

Figure 5

The optical density of bacterial strains L. monocytogenes and S. aureus after 24-h culture in the presence of nanocomposite membrane material based on polyethyleneimine (PEI) with incorporated metallic NPs. Key to the symbols: PEI-Au—polyethylenimine incorporating gold nanoparticles; PEI-Ag—polyethylenimine incorporating silver nanoparticles; PEI-Fe—polyethylenimine incorporating Fe3O4 nanoparticles; PEI-Cu—polyethylenimine incorporating copper nanoparticles. The values are presented as mean ± SD.