The invention relates to the field of foods, and particularly discloses freeze-dried kumquat slices and a preparation method thereof. The freeze-dried kumquat slices are prepared by adopting a freeze-
drying method. The preparation method comprises the following steps of S1, pretreating fresh kumquat fruits; S2, performing freshness locking
nursing on the kumquat fruits through a
nursing solution;S3,
slicing and dishing up the kumquat fruits; S4, pre-freezing kumquat slices; S5,
coating the kumquat slices with auxiliary materials; S6, sublimating and
drying the kumquat slices; S7, analyzing and
drying the kumquat slices; and S8, screening out kernels, and carrying out quality inspection and packaging to obtain the freeze-dried kumquat slices. The
water content of the freeze-dried kumquat slices prepared by the preparation method is lower than 5%, so that microbial
reproduction is not facilitated and product storage is facilitated; only natural auxiliary materials are added in the preparation and
processing process, so that the bitter and
astringent taste of kumquats can be reduced, the nutritional ingredients of the kumquat raw materials can be locked to the maximum extent, and thefreeze-dried kumquat slices are richer in nutritional value and more delicious to eat; and uniform
honeycomb structures are formed among freeze-dried
raw material cells or cells, so that the productis ideal in rehydration and good in
brittleness and
toughness.