Solid lipid peach kernel polypeptide ferrous chelate nanoparticles and preparation method thereof

The invention discloses solid lipid peach kernel polypeptide ferrous chelate nanoparticles and a preparation method thereof. The preparation method comprises the steps as follows: (1) enzymolysis of peach kernel protein; (2) membrane separation; (3) microwave solid-phase chelation; (4) alcohol precipitation; (5) vacuum drying; (6) multi-phase mixing; (7) preparation of solid lipid nanoparticles with a membrane contact method; (8) centrifugal separation; and (9) microwave vacuum drying. The microwave solid-phase synthesis technology, the membrane contact method, the solid lipid nanoparticle embedding method and the like are adopted in the preparation method, and the chelation rate of polypeptides and ferrite as well as the chemical stability and bioavailability of chelates is significantly improved. The prepared solid lipid peach kernel polypeptide ferrous chelate nanoparticles serve as an iron nutrient supplement, taste good, have no iron taste, cause no irritation to intestinal tracts, have good absorption p