Method for preparing dried fruit of jerusalem artichoke by strain fermentation, obtained product and application thereof

The invention provides a method for preparing dried fruit of jerusalem artichoke by strain fermentation, and an obtained product. The method comprises the following steps: selecting jerusalem artichoke, peeling and cutting into blocks; blanching jerusalem artichoke blocks with the boiling water, then cooling with cold water; steeping the jerusalem artichoke blocks into a solution containing fructose syrup and soybean milk, spraying mycotic spore suspension on the surfaces of the jerusalem artichoke blocks and fermenting; floating hypha on the surfaces of the jerusalem artichoke blocks to form a hypha film; sleeping into sugar liquor containing 25wt% of fructose syrup, 0.5 wt% of citric acid and 0.05 wt% of vitamin C, and then drying to obtain the fermented dried fruit of jerusalem artichoke. The method is unique, simple in technological process, convenient to operate and low in cost, natural and pollution-free jerusalem artichoke and soybeans with dietotherapy effect are selected as main raw materials, so that the natural characteristics of the jerusalem artichoke are remained to the largest extent, the complementation of different nutrients is realized, and the fermented dried fruit of jerusalem artichoke has an improved taste. In addition, the invention further provides application of the dried fruit in preparing medicines for curing constipation.