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An electrostatic field generating device for food preservation

A generating device and a food preservation technology, applied in the field of food preservation and storage, can solve the problems of increasing vegetable preservation cost, high technical support requirements, shrinking preservation objects, etc., so as to improve economic value and social value, ensure production safety, reduce The effect of oil oxidation rate

Active Publication Date: 2022-01-04
SHANDONG INST OF COMMERCE & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if cold storage is used for fresh-keeping, after a certain period of storage, the fresh-keeping objects will shrink and dry due to loss of moisture, which will affect the appearance of the product and cause a decrease in taste; the use of controlled atmosphere fresh-keeping can ensure that the fresh-keeping objects lose water slowly to a certain extent, but Mildew damage caused by excessive humidity in the fresh-keeping room; fresh-keeping methods using technologies such as coating and irradiation require high technical support during the implementation process, which increases the cost of fresh-keeping vegetables
All of the above techniques have certain limitations

Method used

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  • An electrostatic field generating device for food preservation
  • An electrostatic field generating device for food preservation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 , figure 2 The shown a kind of electrostatic field generating device for food preservation includes: a safety control module 1, a boost module 2, a rectification module 3, a shunt module 4, a discharge module 5 and a display module 6; the safety control module 1 The input terminal is connected to the mains, the output terminal of the safety control module 1 is connected to the boost module 2; the rectifier module 3 is connected to the boost module 2, the shunt module 4 and the display module 6 respectively; the discharge module 5 is connected to the shunt module 4; The safety control module 1 is used for stabilizing the input voltage, protecting the circuit and automatic power-off protection; the booster module 2 is used for boosting the mains 220V to 1.0kV-10.0kV; the rectifier module 3 is used for rectifying the alternating current It is any one of half-wave, full-wave or bridge-type unidirectional pulse direct current, and the current frequency is con...

Embodiment 2

[0036] On the basis of Embodiment 1, by adjusting the boost module, rectifier module, shunt module and discharge module, the electrostatic field generator can generate a field strength of 2.8kV / m, wherein the current is ≤0.1mA and the frequency is 25Hz.

[0037] Under the condition that the storage environment temperature is 0°C, the cherries are placed in the above-mentioned electrostatic field for long-term preservation. Compared with the pre-determined cold preservation control group, the preservation period of the electrostatic field treatment group can be extended from 25 days to 40-45 days, the good fruit rate can be increased from 75% to 95%, the weight loss rate is less than 2%, and the sugar content is basically unchanged.

Embodiment 3

[0039] On the basis of Embodiment 1, by adjusting the boost module, rectifier module, shunt module and discharge module, the electrostatic field generator can generate a field strength of 5.0kV / m, wherein the current is ≤0.5mA, and the frequency is 100Hz.

[0040] Under the condition that the storage environment temperature is -2°C, the winter jujube is placed in the above-mentioned electrostatic field for long-term preservation. Compared with the pre-determined control group using cold storage, the preservation period of the electrostatic field treatment group can be extended from 70d to 100-120d, the good fruit rate can be increased from 80% to 93%, the weight loss rate is lower than 3%, and the sugar content is higher than 22 %, the conversion rate is less than 10%.

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PUM

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Abstract

The disclosure of the present invention provides an electrostatic field generating device for food preservation, which controls the voltage between 1kV-10kV, reduces the current to 0.001mA-50mA, and the frequency is 25Hz-100Hz, which greatly reduces the safety of use. Hidden dangers ensure production safety. By establishing a space electric field, affecting the surrounding perishable food, effectively slowing down the rate of food deterioration, reducing the rate of oil oxidation, inhibiting the metabolism of fruit and vegetable respiration and after-ripening, affecting the formation of ice crystals and inhibiting microbial activities, etc., so as to ensure food quality and freshness Degree, greatly extending the shelf life and logistics cycle. The invention guarantees the quality and freshness of perishable food, improves the economic value and social value of perishable food, so it has great economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of food preservation and storage, and more specifically relates to an electrostatic field generating device for food preservation. Background technique [0002] my country has a huge output of grain, fruits, vegetables, aquatic products and most foods. Taking fruits and vegetables as an example, my country's output of fruits and vegetables ranks first in the world. Due to the large output, insufficient supporting storage and transportation facilities, backward technology and other reasons, the spoilage rate of perishable food in my country remains high. [0003] As the market and consumers have increasingly higher requirements for the quality of perishable food, the storage, transportation and preservation capacity of perishable food in my country urgently needs to be improved. Researchers have been using technologies such as refrigeration, controlled atmosphere, coating, and irradiation to explore the app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L3/00A23L3/32
Inventor 郭风军李军张长峰靳辰
Owner SHANDONG INST OF COMMERCE & TECH
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