Vacuum frozen and dried mulberry product and preparation technology thereof

The invention belongs to the technical field of food processing, and particularly relates to a vacuum frozen and dried mulberry product and a preparation method thereof. The product uses mulberry fruits as raw materials. Through technologies including preprocessing, pre-freezing, sublimating, resolving and drying, and packaging of the raw materials and the like, the purple black product is obtained. The microcosmic shape of the product is in a porous sponge shape, and the water content of the product is within 4.14%. In the processing course of freezing and drying the mulberries, the highest processing temperature does not exceed 50 DEG C, so that the activity of functional components in the mulberries can be maintained to the maximum, and the original property, the original color and the nutritional value of the mulberries can be maintained. The sweetness and the taste of the product are better than those of a fresh mulberry product, and the product has a longer shelf life. The product disclosed by the invention is suitable for industrialized production and can be promoted to food processing enterprises.