A technology for preparing dried apples by combined drying with microwave and hot air

A technology that combines drying and microwave hot air is applied in the fields of fruit and vegetable preservation, fruit/vegetable preservation by dehydration, food science, etc. The softening time is prolonged and the drying effect is good.

Active Publication Date: 2022-01-21
雅安职业技术学院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a process for preparing dried apples by combining microwave and hot air drying, which can make the production process of dried apples easier to operate, can control the rate of moisture entering and leaving dried apples / apple slices, and then solve the problem of drying apple slices under high-power microwaves. The gap between the internal and external water loss rate can be solved, the problem of coking phenomenon and the problem of prolonging the softening time can be solved

Method used

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  • A technology for preparing dried apples by combined drying with microwave and hot air
  • A technology for preparing dried apples by combined drying with microwave and hot air

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Embodiment 1

[0035] A method for preparing dried apples by combined drying with microwave and hot air, comprising the following steps:

[0036] (1) Ripe apples are peeled and cored and cut into apple slices with a thickness of 2 cm;

[0037] (2) Soak the apple slices in a color-protecting solution containing 0.4% citric acid and 0.5% calcium chloride for 3 hours;

[0038] (3) Soak the apple slices in the slow-release solution for 20 minutes, refrigerate at 4°C for 1 hour after soaking, and then take 1000 pieces of uniform size for staged microwave drying and staged hot air drying; dry until the water content is low The dried apple product is obtained at 5%; the components of the sustained-release solution are: 3% agar powder, 6% hydroxypropyl distarch phosphate, and 6% xylitol.

[0039]The staged microwave drying process includes:

[0040] Use 900W microwave power to dry for 2 minutes; use 600W microwave power to dry for 3 minutes; use 300W microwave power to dry for 4 minutes; microwave...

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Abstract

The invention discloses a process for preparing dried apples by combining microwave and hot air drying, which comprises cleaning, removing the peel and core, and cutting the pulp into apple slices; soaking the apple slices in a color-protecting solution for 3 to 5 hours; Staged microwave drying and staged hot air drying; dried apples are dried until the water content is less than 5%; finally, the dried apples are aseptically packaged. The invention adopts the combined drying method of microwave and hot air. Compared with microwave drying, hot air drying is easier to operate, and the process of microwave puffing is more optimized. Therefore, the prepared dried apples preserve the original flavor of apples and are convenient for preservation.

Description

technical field [0001] The invention relates to the technical field of fruit processing, in particular to a process for preparing dried apples through combined drying with microwave and hot air. Background technique [0002] Dried apples, that is, apple crisps, are products with a water content of about 5% obtained by evaporating the moisture in the apples by frying or other methods in a vacuum or negative pressure state without changing the shape and color. . It contains no coloring, no preservatives, rich in fiber, and is a pure natural snack food. [0003] Microwave drying is different from traditional drying methods, and its heat conduction direction is the same as that of moisture diffusion. Compared with the traditional drying method, it has the advantages of high drying rate, energy saving, high production efficiency, uniform drying, clean production, easy automatic control and improved product quality. [0004] Microwave drying is an internal heating method. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L19/00A23L5/41A23B7/02A23B7/022
CPCA23B7/02A23B7/022A23L5/41A23L19/03
Inventor 何靖柳韦婷董赟刘翔罗小莉张恒杨冬雪胡燕杨文君刘晓璐
Owner 雅安职业技术学院
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