Preparation method of coconut essence

The invention relates to the technical field of essence production, in particular to a preparation method of coconut essence, which specifically comprises the following steps: selecting fruits, cutting the fruits, pulping coconut meat, performing primary pressure sterilization, performing secondary pressure sterilization, adding ethanol, and concentrating. Natural coconut milk obtained by squeezing coconut endosperm is adopted as a raw material, and the natural coconut milk is concentrated by a nanofiltration membrane to obtain substances which do not lose trace flavor, can truly restore all characteristic fragrance of coconuts, is free of artificially synthesized essence traces and worries about food safety, is a green and safe additive, and meets the current requirements for safe and healthy food. A wall material is added into the coconut essence to prepare nano microcapsules, so that the fragrance component can be wrapped in the capsules, the volatilization loss is inhibited, the fragrance retention time i