In present study, puerarin phospholipids complex (PPC) was prepared by co-precipitation to improve oral absorption of puerarin according to its low solubility and low oral bioavailability. The research focused on the formation mechanism of PPC and its physicochemical and biological characteristics on the basis of optimizing the preparation conditions. The PPC was also prepared by supercritical fluid precipitation (SFP) technique and the physicochemical characteristics of PPC prepared by four different metho...