High-internal-phase emulsion with stable polysaccharide substances as well as preparation method and application of high-internal-phase emulsion

The invention relates to a polysaccharide substance stable high internal phase emulsion and a preparation method and application thereof, and the preparation method comprises the following steps: dispersing any one of sodium carboxymethyl cellulose, sodium alginate and pectin in water or an aqueous solution, standing, and preparing a solution with the mass percent concentration of 0.05-3% and the pH value of less than 5.2 as an aqueous phase; the water phase and the oil phase prepared in the step S1 are subjected to shear mixing, and the high internal phase emulsion with the oil phase volume fraction of 74%-88% is obtained. According to the method, the high internal phase emulsion can be efficiently prepared through one-step shearing dispersion only by independently using polysaccharide substances (or polysaccharide derivatives) without other surfactants or coagulators, so that a thought is provided for developing a novel emulsion stabilizer for the high internal phase emulsion; the prepared high-internal-pha