The invention relates to the technical field of plant extraction, and provides a method for preparing apple polyphenol. The conventional processing steps for preparing the apple polyphenol have heavy environmental pollution and poor safety, and are not suitable for large-scale industrial production. The method for preparing the apple polyphenol provided by the invention comprises the following steps of: preparing raw materials, extracting, performing membrane filtration, adsorbing with macroporous adsorption resin, eluting, concentrating and drying. In the extracting and separating process, water and ethanol is used as solvents, so the environmental pollution is light; the using amount of an organic solvent is reduced, so the environment can be effectively protected; and the method has the advantages of high safety, short production period and suitability for large-scale industrial production.
The present invention will provide a kind of preparation method of apple polyphenol, to overcome the problem that the rate of recovery is low, solvent consumption reaches living production cycle length more that prior art exists.
In order to overcome the problem that prior art exists, technical scheme provided by the present invention is: a kind of preparation method of apple polyphenol comprises the steps: successively
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