Objective:To enhance the water solubility and stability of hydrophobic active substances.Methods:A nano-delivery system of rice protein hydrolysate(RPH)-xanthan gum(XG)-curcumin(Cur)was developed,wherein curcumin served as the delivery object,and the encapsulation efficiency,stability,antioxidant activity,and formation mechanism of the nanoparticles were determined and analyzed.Results:The encapsulation efficiency of RPH-XG-Cur nanoparticles reached 78.40%,with a particle size of 74.78 nm,PDI of 0.36,and Zeta potential of-27.93 mV.Remarkably,t...