YAP-Zn, CGA-Zn and phlorizin-Zn complexes were prepared by thinned-young apple polyphenols (YAP), chlorogenic acid (CGA), and phlorizin with zinc chloride. Scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis), Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance spectroscopy (