Preparation process of egg yolk powder rich in egg yolk lecithin DHA (Docosahexaenoic Acid)

The invention relates to a preparation process of egg yolk powder rich in egg yolk lecithin DHA (Docosahexaenoic Acid). Firstly, an eucaryotic microorganism and marine microalgae are selected and used to perform proliferation fermentation in a nutrition agent and then used for preparing a DHA nutrition essence powder together with a powder mixture of deep-sea fish oil, fishbone powder and natural plant according to a certain proportion, and the DHA nutrition essence agent is used as an additive of laying hen feed; eggs laid by hens fed after 10 days are collected, egg yolks are taken and added with granulesten homogenate, and the mixture is subjected to homogeneity via a high-pressure homogenizer to form a liposome; an egg yolk lecithin DHA liposome used as a core material, glycerin monostearate sodium caseinate used as an emulsifier and a dextrin used as a wall material are mixed and emulsified with the high-pressure homogenizer, dried and sieved to obtain the finished product. The preparation process provid