Hippophae rhamnoides leaf freeze-dried instant powder and preparation method thereof

The invention provides a method for preparing freeze-dried instant powder by using a hippophae rhamnoides leaf extract, and relates to the technical field of hippophae rhamnoides leaf extraction and instant powder processing. According to the specific technical scheme, the preparation method comprises the following steps: performing ultrasonic-assisted extraction on dried hippophae rhamnoides leaves by using an ethanol-water solution, adding maltodextrin into the concentrated extract as a drying aid, and finally performing a vacuum freeze-drying process to obtain the freeze-dried instant powder. The prepared hippophae rhamnoides leaf freeze-dried instant powder overcomes the defect of poor appearance of commercially available hippophae rhamnoides tea, has good flowability and solubility, and effectively maintains the aroma and taste of the hippophae rhamnoides leaves. The method has a wide market prospect, so that the economic value of the hippophae rhamnoides leaves is improved, and a certain guiding effect