Anthocyanin-rich low-sugar type nutritional fruit powder and preparation method thereof

The invention discloses an anthocyanin-rich low-sugar type nutritional fruit powder and a preparation method thereof. The nutritional fruit powder comprises the following components: 500-950 parts of mulberries, 0-300 parts of blueberries, 0-300 parts of cranberries, 15-30 parts of beta-cyclodextrin, 10-30 parts of lecithin, 10-30 parts of soluble starch and 1-10 parts of probiotics. The preparation method comprises the following steps: (a) selecting and cleaning the fresh fruits; (b) grinding into ultrafine powder; (c) carrying out reverse osmosis membrane concentration; (d) sterilizing; (e) fermenting; (f) adding auxiliary materials; (g) carrying out spray freeze drying; (h) packaging and storing. The nutritional fruit powder is prepared from the fresh fruits such as the mulberries, is rich in anthocyanin and good in antioxidant effect, has the function of improving the immunity of human body, is suitable for the people having intestinal disorders; the fermentation step is carried out in the preparation process of the nutritional fruit powder prepared from fresh fruits such as the mulberries and has a function of removing sugar, so that the prepared nutritional fruit is low in sugar content, has a better function of reducing blood glucose and is suitable for the people having hyperglycemia.