Starch nanocrystal-sodium alginate composite particle stable Pickering emulsion and preparation method thereof

The invention discloses a starch nanocrystal-sodium alginate composite particle stable Pickering emulsion and a preparation method thereof, the starch nanocrystal-sodium alginate composite particle stable Pickering emulsion comprises a water phase and an oil phase, the water phase comprises starch nanocrystal, sodium alginate and water, and the oil phase is vegetable oil. The surface wettability and electrostatic repulsive force of starch nanocrystal particles are improved in a mode of compounding sodium alginate and starch nanocrystal, so that the starch nanocrystal particles are more easily adsorbed on an oil-water interface and are not easy to agglomerate, the stability of an emulsion is improved, and the defect that a single starch nanocrystal is used as an emulsifier is overcome; in addition, two kinds of plant polysaccharides with natural sources are selected as raw materials, so that the plant polysaccharides have the advantages of being rich in source, low in price and good in biocompatibility ...