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Fruit and vegetable fresh-keeping and refrigeration processing process

A processing technology and fresh-keeping technology of fruits and vegetables, which are applied in the direction of preservation of fruits/vegetables through freezing/refrigeration, and preservation of fruits/vegetables through radiation/electrical treatment, etc. Pesticide residues in fruits and vegetables, etc., to achieve good sterilization effect, ensure green health, and prevent disease effects

Inactive Publication Date: 2015-04-29
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fresh-keeping and cold storage of fruits and vegetables are widely used in daily life to realize off-season sales and value-added preservation of fruits and vegetables. However, there are many problems in fresh-keeping and cold storage of fruits and vegetables. For example, if the storage temperature is too low, it will cause freezing, reduce the hardness of fruits and vegetables, and shorten the storage life. After being frozen during storage, it is easy to lose water and shrink, lose freshness, pesticide residues in fruits and vegetables cannot be eliminated, and the storage period is short. The application number is: CN51010294423. Fruits and vegetables are preserved and refrigerated by pre-cooling, ultraviolet radiation, gradient cooling, refrigerating, gradient heating, and out of the warehouse. During storage, the pesticide residues inside the fruits and vegetables cannot be eliminated, the bacteria cannot be sterilized efficiently, and the rate of oxygen reduction is slow, and the cooling of the warehouse is slow, which increases the process time

Method used

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  • Fruit and vegetable fresh-keeping and refrigeration processing process

Examples

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Effect test

Embodiment 1

[0018] A kind of fresh-keeping and refrigerated processing technology of fruits and vegetables of the present embodiment is characterized in that the processing steps are as follows:

[0019] (1) Harvesting and selection of fruits and vegetables: Harvesting fruits and vegetables and selecting mature fruits and vegetables with a height of 10cm and intact, which ensures the quality of cold storage of fruits and vegetables;

[0020] (2) Cleaning and cleaning: the fruits and vegetables harvested and selected in step (1) are cleaned and cleaned with clear water, which eliminates the residues on the surface of the fruits and vegetables and increases the humidity of the fruits and vegetables;

[0021] (3) Pre-cooling: the fruits and vegetables in step (2) are pre-cooled for 3.5 hours, and the pre-cooling temperature is 8°C to achieve low-temperature domestication of fruits and vegetables and prevent frostbite of fruits and vegetables in cold storage;

[0022] (4) Ultraviolet radiatio...

Embodiment 2

[0025] Embodiment 2: all the other are identical with described embodiment 1, and difference is that in step (3), precooling temperature is 23 ℃, and the volume fraction that adds ozone in step (5) is 2.5%, and in step (5), The temperature of the regulated refrigerator is 0° C., and the humidity is 90% of the relative humidity of the air.

Embodiment 3

[0026] Embodiment 3: all the other are identical with described embodiment 1, and difference is, in step (3), precooling treatment temperature is 8 ℃, and in step (5), the volume fraction that adds ozone is 3%, and in step (4) The ultraviolet wavelength of the ultraviolet radiation is 84nm, and the radiation dose is 2.0KJ / m 2 .

[0027]

[0028] Through the above three examples, it can be seen from the three sets of data in the above table that when the pre-cooling temperature is 23°C, the storage period of fruits and vegetables is the longest; Conducive to the preservation and refrigeration of fruits and vegetables.

[0029] The present invention completes the preservation and refrigeration of fruits and vegetables through six steps: harvesting and selection of fruits and vegetables, cleaning, pre-cooling, ultraviolet radiation, decompression and refrigeration, and gradient heating. The process is reasonable and simple, which not only ensures the freshness of fruits and v...

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Abstract

The invention discloses a fruit and vegetable fresh-keeping and refrigeration processing process. The process comprises the following steps: (1) harvesting and selecting fruits and vegetables; (2) washing and keeping clean; (3) pre-cooling; (4) carrying out ultraviolet radiation; (5) decompressing refrigerating; and (6) gradually increasing temperature. The process is reasonable and simple; the fresh degree of the fruits and vegetables is guaranteed and the storage period of the fruits and vegetables is prolonged; the process mainly has the characteristics of high cooling speed, rapid oxygen reduction, efficient sterilization and residue elimination; the fruits and vegetables can be stored for a long period, and green and healthy safety guarantees are realized; and the process is suitable for being popularized and applied in the fresh-keeping and refrigeration industry.

Description

technical field [0001] The invention relates to a fresh-keeping and cold storage technology, in particular to a fresh-keeping and cold storage processing technology for fruits and vegetables. Background technique [0002] Fresh-keeping and cold storage of fruits and vegetables are widely used in daily life to realize off-season sales and value-added preservation of fruits and vegetables. However, there are many problems in fresh-keeping and cold storage of fruits and vegetables. If the storage temperature is too low, it will cause freezing, reduce the hardness of fruits and vegetables, and shorten the storage life. Fruits and vegetables After being frozen during storage, it is easy to lose water and shrink, lose freshness, pesticide residues in fruits and vegetables cannot be eliminated, and the storage period is short. The application number is: CN51010294423. Fruits and vegetables are preserved and refrigerated by pre-cooling, ultraviolet radiation, gradient cooling, refri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/04A23B7/015
Inventor 张其蒙蔡福海余炼
Owner GUANGXI UNIV
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