Preparation method of probiotic nutrition fortified dried fruits

By using desalted whey powder as a fermentation medium and a probiotic impregnation solution, combined with vacuum freeze-drying technology, the problems of decreased probiotic activity and nutrient loss in dried fruit have been solved, achieving efficient preparation of probiotic-fortified dried fruit and improving the product's health and portability.

CN121926337APending Publication Date: 2026-04-28ZHENGZHOU FRUIT RES INST CHINESE ACADEMY OF AGRI SCI
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Patent Information

Application Number
CN202610209521.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-13
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

In the existing technology, the preparation method of dried fruit leads to the loss of heat-sensitive nutrients, the activity of probiotics decreases during processing and storage, and the preparation process of probiotic functional dried fruit is complicated and costly, making it difficult to effectively protect the activity of probiotics and enhance the nutritional components of dried fruit during freeze drying.

Method used

Desalted whey powder was used as the fermentation medium for probiotics. Combined with a probiotic impregnation solution composed of maltodextrin, skim milk powder, antioxidants, and pectin, probiotic-fortified dried fruit was prepared by vacuum freeze-drying technology. This simplified the process and improved the activity of probiotics and the nutritional fortification effect of the dried fruit.

Benefits of technology

It achieves effective protection of probiotics during the freeze-drying process, improves the number of live probiotics and the retention of nutrients in dried fruit, and the product has the advantages of being healthy, safe, nutritionally balanced and easy to carry, in line with the concepts of "clean label" and "food-grade fermentation".

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Abstract

The invention discloses a preparation method of probiotic nutrition fortified dried fruits, and belongs to the technical field of food processing. The preparation method disclosed by the invention comprises the following steps: inoculating probiotics into fruit juice added with desalted whey powder, and fermenting to obtain fermentation liquor; adding a freeze-drying protective agent into the fermentation liquid to serve as probiotic impregnation liquid to impregnate the fruit slices or blocks; and performing pre-freezing and vacuum freeze-drying to obtain the probiotic nutrition fortified dried fruits. The food raw materials are directly added into the probiotic fermentation liquor to prepare the steeping liquor, thallus separation is not needed, the process is simple and convenient, and the label cleaning concept is met; the impregnation liquid has a remarkable protection effect on probiotics in the vacuum freeze-drying process, and can strengthen nutritional and functional components such as ascorbic acid and total phenols in the dried fruits at the same time. The viable count of probiotics in the prepared dried fruits can reach 10 < 9 > CFU / g or above, and the dried fruits are balanced in nutrition, have the natural flavor of fruits and the functions of the probiotics, are convenient to carry and store and have good industrial application prospects.
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