Linolenic acid emulsion and preparation method thereof

The invention relates to the technical field of emulsion preparation, in particular to linolenic acid emulsion and a preparation method thereof. A starch-protein-polyphenol compound with high antioxidant activity is used as an emulsion stabilizer of a linolenic acid emulsion, an aqueous solution of the compound is used as a water phase of the emulsion, linolenic acid is used as an oil phase of the emulsion, and the starch-protein-polyphenol compound and the linolenic acid are mixed and then subjected to high-speed shearing to obtain a crude linolenic acid emulsion; and performing ultrasonic treatment on the linolenic acid crude emulsion to further obtain the linolenic acid emulsion with high oxidation stability. The emulsion stabilizer has excellent antioxidant activity, and can effectively improve the concentration of an antioxidant on an oil-water interface of the linolenic acid emulsion, so that the oxidation stability of the emulsion is improved, and an emulsifier and the antioxidant do not need to be add