The invention discloses a producing method of debitterized low-
carbohydrate freeze-dried lemon slices, comprising the following steps of: selecting fresh lemons which are failed to be chosen in a commercialized classifying process and have been separated from rotten, mildewed and wormy lemons, wherein the
diameter of each selected fresh lemon is 50mm-60mm; cleaning the fresh lemons, sterilizing and then transversally
cutting into slices of 4mm-5mm; debitterizing the slices, dipping into
xylitol, putting in dishes, freezing for sublimation
drying in a vacuum condition, evaporating and
drying in a vacuum condition, absorbing clean dry air to break the vacuum condition, transfer-packaging the splices by using a
high oxygen-insulation material in a controlled dry environment, and then packaging the slices in a
low vacuum condition to obtain FD (freeze-dried) lemon slices. The producing method of debitterized low-
carbohydrate freeze-dried lemon slices is low in
energy consumption and high in production efficiency; the prepared lemon slices have biological characteristics of lemon in aspects of shape, color, freshness and
aroma, and have
low carbohydrate, low bitter and good taste; the slices can be made to be drunk as tea, and can be used as
medicine; the slices are convenient for storage and use and high in
additional values, have lemon
nutrition components and low-
carbohydrate health care function; and the producing method of debitterized low-carbohydrate freeze-dried lemon slices solves the problem that
orchard workers are difficult to sell defective lemons, and makes a contribution to increase of income.