Figure 8
Schematic representation of antibacterial mechanism of Catechin-Cu nanoparticles.
Firstly, the positive charged Catechin-Cu nanoparticles tend to be adsorbed and accumulated on the surface of negative charged cells by electrostatic attraction, which can change the permeability and enhance the antimicrobial activity. Secondly, the positive charged NPs mainly adsorb the negatively charged teichoic acid molecules in S. aureus, which made the NP can act on the cells effectively and fully, resulting in cell death.
