Slow-release emulsion filling gel, preparation method and application thereof

The invention relates to filling gel, in particular to slow-release emulsion filling gel as well as a preparation method and application thereof, and belongs to the technical field of gel materials. The sustained-release type emulsion filling gel is an oil-in-water type emulsion which takes a network interpenetrating structure as a main body, wherein the network interpenetrating structure is obtained by crosslinking gellan gum (GG) and sodium alginate (SA) through calcium ions and reassembling, and the oil-in-water type emulsion is coated with oil-soluble mildew-proof factors. The slow-release emulsion filling gel can achieve an efficient and lasting mildew-proof effect only by selecting one mildew-proof factor, is good in slow-release effect, can continuously prevent mildew for more than 90 days, and has a wide application prospect in the aspect of slow release of mildew-proof agents. Compared with a traditional emulsion, the emulsion wrapped by the hydrogel is more stable and not prone to being affected by