Preparation and Process Optimization of Polygonum multiflorum-Resistant Starch-Zein-Loaded Ester Bufogenin Nanoparticles
In order to improve the drug properties of ester bufogenin and increase its bioavailability,Polygonum polygonatum resistant starch-zein nanoparticles were prepared by reverse-solvent method.Single factor and orthogonal experiments were used to optimize the preparation process with the encapsulation rate as the index.The optimized preparation process was as follows:pH 4,stirring speed 400 r·min-1,ratio of resistant starch to zein 1∶1,ratio of zein to esterbufogenin 1∶1,the encapsulation rate of prepared nanoparticles was 86.84%.