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Method and device for ultrasonically enhanced controlled atmosphere drying

A drying method and enhanced air technology, which is applied in the field of ultrasonic enhanced controlled atmosphere drying and ultrasonic enhanced controlled atmosphere drying device, can solve the problems of long drying time, loss of active ingredients and low drying efficiency of densely structured materials, so as to protect product quality, Improved tissue structure and high drying efficiency

Active Publication Date: 2017-10-31
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a direct contact ultrasonically enhanced controlled atmosphere drying method, which solves the problems of long drying time, low drying efficiency and serious loss of active ingredients of existing easily oxidized and densely structured materials.

Method used

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  • Method and device for ultrasonically enhanced controlled atmosphere drying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The ultrasonically enhanced controlled atmosphere drying method of the present embodiment comprises the following steps:

[0037] 1) After washing the carrots, peel them and cut them into thin slices with a thickness of 4mm to obtain carrot slices;

[0038] 2) 200g carrot slices are placed in the drying box of the controlled atmosphere drying device, placed on the ultrasonic radiating plate, and the infrared radiating plate is installed above the ultrasonic radiating plate at a distance of 10 cm from the material;

[0039] Turn on the controlled atmosphere drying device, feed nitrogen into the drying box to adjust the volume content of oxygen in the drying medium to 5%, then carry out controlled atmosphere hot air drying to the carrot slices, the drying temperature is 50 ° C, and the wind speed is 0.5m / s; While the hot air is drying, ultrasonic treatment and infrared radiation treatment (i.e. ultrasonic-infrared radiation enhanced modified atmosphere drying) are carried...

Embodiment 2

[0042] The ultrasonically enhanced controlled atmosphere drying method of the present embodiment comprises the following steps:

[0043] 1) Get the carrots, wash them, peel them, and cut them into thin slices with a thickness of 5 mm to obtain carrot slices;

[0044] 2) 200g carrot slices are placed in the drying box of the controlled atmosphere drying device, placed on the ultrasonic radiating plate, and the infrared radiating plate is installed above the ultrasonic radiating plate at a distance of 10 cm from the material;

[0045] Turn on the controlled atmosphere drying device, feed nitrogen into the drying box to adjust the volume content of oxygen in the drying medium to 6%, then carry out controlled atmosphere hot air drying to the carrot slices, the drying temperature is 55 ° C, and the wind speed is 1.0 m / s; While the heat-adjusting air is drying, ultrasonic treatment and infrared radiation treatment (i.e. ultrasonic-infrared radiation enhanced modified atmosphere dryi...

Embodiment 3

[0048] The ultrasonically enhanced controlled atmosphere drying method of the present embodiment comprises the following steps:

[0049] 1) Get the carrots, wash them, peel them, and cut them into thin slices with a thickness of 6 mm to obtain carrot slices;

[0050] 2) 200g carrot slices are placed in the drying box of the controlled atmosphere drying device, placed on the ultrasonic radiating plate, and the infrared radiating plate is installed above the ultrasonic radiating plate at a distance of 10 cm from the material;

[0051] Turn on the controlled atmosphere drying device, feed nitrogen into the drying box to adjust the volume content of oxygen in the drying medium to 5%, then carry out controlled atmosphere hot air drying to the carrot slices, the drying temperature is 60 ° C, and the wind speed is 1.5m / s; While the heat-adjusting air is drying, ultrasonic treatment and infrared radiation treatment (i.e. ultrasonic-infrared radiation enhanced modified atmosphere dryin...

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Abstract

The invention discloses a method and device for ultrasonically enhanced controlled atmosphere drying. The method includes performing direct contact ultrasonic treatment on the material while the controlled atmosphere hot air is drying the material. The ultrasonic enhanced modified atmosphere drying method of the present invention effectively inhibits the oxidation reaction process in the drying process, protects the active ingredients in the material, effectively inhibits the browning of the color and luster, and solves the problem that nutrients are easily oxidized and degraded in conventional hot air drying; directly The synergistic effect of contact ultrasonic and modified atmosphere drying in low oxygen environment, under the premise of ensuring product quality, ultrasonic energy is directly transmitted into the material, effectively improving the moisture migration rate of controlled atmosphere drying, improving energy utilization and mass transfer Strengthen the efficiency, thereby improving the drying efficiency, shortening the drying time, and solving the problems of low drying rate and low product quality of conventional hot air drying, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of drying and processing of agricultural products, and in particular relates to an ultrasonic-enhanced controlled-atmosphere drying method, and also relates to an ultrasonic-enhanced controlled-atmosphere drying device. Background technique [0002] Carrot is one of the most commonly used agricultural products in today's society. It is rich in nutrients, has high nutritional value and multiple health benefits. It is known as "earth ginseng" and is deeply loved by consumers. During the processing of carrots, due to cell shrinkage or tissue structure damage, the sensitivity of carrot nutrients to light, heat, and oxygen is likely to increase, resulting in the loss of carotene-based nutrients. [0003] Drying is an important means of carrot processing and preservation, and hot air drying is currently the most commonly used method for carrot drying. However, during the drying process, carrots are prone to brown...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/02
Inventor 刘云宏苗帅孙悦朱文学白喜婷
Owner HENAN UNIV OF SCI & TECH
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