Preparation method of natural lemon slice and fruit powder

The invention discloses a preparation method of natural lemon slice and fruit powder. The preparation method comprises the following steps: (1) slicing lemon fruit and performing dipping treatment, then carrying out microwave vacuum drying till the water content of lemon fruit slices is 12wt% to 15wt%; (2) then carrying out hot-air drying on the lemon fruit slices, then drying by using a hot-air drying oven till the water content of the fruit slices is lower than or equal to 9wt%, and then packing to obtain lemon slices; and (3) finally crushing the lemon slices into 80-100 meshes through a crusher so as to obtain lemon fruit powder. The method combines vacuum microwave puffing treatment and lemon slice preparation by hot-air drying and preparation of a natural fruit powder product, the color, flavor and nutrient content of the prepared product are effectively stored, and the product quality is improved. Along with the growth of the living standard of people and attention to food safety, the preparation method can be applied to composite vegetable and fruit powder and natural health leisure food. Moreover, through vacuum microwave drying, the processing cycle is shortened, the energy is saved, and the consumption is reduced.