The invention provides a method for improving the
brittleness of crispy fruit slices and preventing the adhesion through combining high vacuum with negative pressure
pulse microwave drying, and belongs to the technical field of fruit and
vegetable food processing. According to the method, the processes for
processing the high-
vacuum drying crispy fruit slices comprise the steps of fresh fruit selection, cleaning, peeling, denucleation,
slicing, color protection,
brittleness protection,
adhesion prevention, high-
vacuum drying, negative pressure
pulse microwave later-period short-time
drying and
package. A
recipe adopted in the
brittleness protection work procedure comprises 0.01 percent to 6.0 percent of white granulated
sugar, 0.01 percent to 5.0 percent of
calcium chloride, 0.01 percent to 2.0 percent of
pectin and 0.01 percent to 2.0 percent of
xanthan gum, the materials are subjected to vacuum
osmosis in the combined water solution, and then, the negative-pressure pulse miciowave later-stage short-time
drying is combined. A
recipe adopted in the
adhesion prevention work procedure comprises 0.01 percent to 10 percent of
maltodextrin and 0.01 percent to 10 percent of
lactose, the materials are soaked for 10 to 300 minutes in combined water solution, and then, the later-stage short-time
microwave surface drying is combined. The improved crispy slices have the advantages that the mouth feeling is crispy, the
nutrition content is high, the
moisture absorption of products during the eating is avoided, and the
eating time of the high-
vacuum drying crispy fruit slice product is prolonged.