A freeze-dried kiwi fruit slice and a processing method thereof

Abstract

A freeze-dried kiwi fruit slice and a processing method thereof are provided. The freeze-dried kiwi fruit slice is prepared by the processing method as follows. The processing method includes a step of preparing a starching liquid, namely a step of selecting honey and maltodextrin, adding the maltodextrin into the honey with the maltodextrin being 25-35% of the honey, adding drinking water for regulation until the content of soluble solids is 10-20%, stirring fully to obtain the starching liquid and keeping for later use; a step of raw material pretreatment, namely a step of cleaning prepared kiwi fruit, peeling, slicing, putting the kiwi fruit slices into the starching liquid in order, fully starching, taking out and spreading on a material tray; and a step of freeze-drying including prefreezing and vacuum freeze drying, namely a step of putting the material tray containing the kiwi fruit slices into a freezing chamber, prefreezing, setting the vacuum degree of a vacuum freeze drying device to be not more than 100 Pa, and performing staged heating and drying by setting a staged drying curve according to the water sublimation rate of the starched kiwi fruit slices so as to prevent loss of heat-sensitive components of the starched kiwi fruit slices and to protect product color from browning.

Description

technical field [0001] The invention relates to a freeze-dried kiwifruit slice and a processing method thereof, in particular to a freeze-dried kiwifruit slice coated with honey prepared by vacuum freeze-drying equipment and a processing method thereof. Background technique [0002] Kiwi fruit is considered to be the fruit with the highest nutritional density. It is not only rich in various vitamins and amino acids needed by the human body, but also has the highest vitamin C content in fruits. When ripe, the fresh fruit also contains chlorophyll, and is known as the "king of Chinese fruits"; It also has high medicinal efficacy, has the function of lowering blood cholesterol and triglyceride, has the pharmacological activities of scavenging active oxygen free radicals, inhibiting tumor cells, and improving immune function. my country is the main producing country of kiwifruit, with rich varieties and resources. Among them, Chinese kiwifruit tastes sweet and sour, has excellen...

AI Technical Summary

Problems solved by technology

[0003] However, the fresh kiwifruit skin is thin and juicy, and it is easy to become soft and rotten after harvesting, which seriously affects the added value of kiwifruit products and restricts the extension and expansion of the kiwifruit processing industry chain

At present, kiwifruit processed products mainly include preserved fruit, canned food, fruit juice, fruit wine, etc., the loss of natural nutritional and active ingredients is serious, and the content of additives is high

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