Figure 3

Scanning Electron Microscope (SEM) micrograph and zeta potential of nanoparticles. (A) SEM image of CH-NPs (Chitosan nanoparticles). (B) SEM image of BER/CH-NPs (Berberine-loaded chitosan nanoparticles). (C) SEM image of CRE/CH-NPs (Cyperus rotundus rhizomes-loaded chitosan nanoparticles) indicated that the particles possessed a uniform, spherical-like shape with an average diameter.