Preparation method and application of wild jujube root aqueous extract

The invention relates to the field of natural product chemistry, in particular to a preparation method and application of a wild jujube root aqueous extract. The method comprises the following steps: adding wild jujube roots, L-methionine and glycerol into water, and heating and refluxing to obtain the wild jujube root aqueous extract, the mass volume ratio of the wild jujube root to the L-methionine to the glycerol to the water is 1g: 0.5 g: (0.3-0.9) g: (5-20) mL. The L-methionine and the glycerol are added into the water, so that the dissolution of alkaloid, flavone and sterol substances in the wild jujube roots can be promoted, and the preparation method has the characteristics of simplicity, low cost and easiness in industrial preparation. The wild jujube root aqueous extract prepared by the method disclosed by the invention is good in oxidation resistance and remarkable in enzyme activity, and can be applied to the fields of medicines, health-care products and drinks. 本发明涉及天然产物化学领域，特别是涉及一种酸枣根水提物的制备方法及其应