The invention provides fat-soluble
rutin ester as well as a preparation method and application thereof, and belongs to the technical field of food. Comprising the following steps: S1, respectively weighing
rutin, an acyl donor and a biocatalyst, putting the
rutin, the acyl donor and the biocatalyst into a reaction flask, and adding a mixed
solvent for reaction; s2, after the reaction in the step S1 is finished, filtering out the biocatalyst, and collecting
clear liquid; and S3, removing the reaction
solvent to obtain the fat-soluble rutin ester product. According to the method, edible
vegetable oil which is in a
liquid state at
room temperature is used as an acyl donor, and
lipase is used as a biocatalyst to synthesize the fat-soluble rutin ester. The biocatalyst used in the method is low in cost and high in
catalytic efficiency, and the acyl donor used in the method is low in cost and high in safety. The synthesized fat-soluble rutin ester is good in safety and can be directly applied to
grease and
grease-rich systems without separation and purification. The technology has the advantages of simplicity, high efficiency and the like and is suitable for industrial production.