Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preservation method of fresh plants by combination of vacuum pre-cooling and acidic electrolyzed oxidizing water

A technology of oxidizing potential water and freshness, which is applied in the fields of fruit and vegetable preservation, fruit/vegetable preservation through freezing/refrigeration, food preservation, etc. It can solve the problems of dehydration of deli meat, poor freshness preservation effect, and reduced commodity value. Achieve the effect of reducing the breathing rate, better fresh-keeping effect, and reducing operation steps

Inactive Publication Date: 2016-07-20
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the existing vacuum technology mainly has the following shortcomings: (1) the product of vacuum pre-cooling must contain moisture and is easy to evaporate, which limits the scope of application of vacuum pre-cooling technology; (2) due to excessive water loss during the pre-cooling process It is easy to cause adverse changes in product quality, such as wilting of fresh and fresh plants, dehydration of deli meat, resulting in a decrease in commodity value
Although this type of method can reduce the degree of water loss of the product, it still has the following disadvantages: (1) The method of soaking in clear water before pre-cooling adds a processing step, which increases the complexity of the operation, and the amount of water added is difficult to control, which may cause pre-cooling. After the end, there is still moisture remaining, which will adversely affect the subsequent storage of the product: (2) The method of spraying the pretreatment solution on the surface of the product is not universal, and the scope of application is small
[0011] (1) The vacuum pre-cooling fresh-keeping method published in the existing patents is mostly applied to leafy vegetables that contain a lot of water and are easy to evaporate, and the application range is narrow;
[0012] (2) Vacuum pre-cooling technology is only used, without considering the possible adverse changes in product quality due to water loss, and the freshness preservation effect is not good;
[0013] (3) Some fresh-keeping methods add a step of soaking in clear water before pre-cooling, which is complicated to operate, and the amount of water added is not easy to control, which may cause residual water after pre-cooling, which will adversely affect the subsequent storage of the product;
[0014] (4) Some fresh-keeping methods are combined with ordinary water immersion or water spray treatment while applying vacuum pre-cooling technology. Although it helps to reduce the water loss rate of the product, the amount of water added is not easy to control. Once the water accumulates, microbial contamination will easily occur, resulting in subsequent storage. Spoilage of products in the process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preservation method of fresh plants by combination of vacuum pre-cooling and acidic electrolyzed oxidizing water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Select lettuce with uniform size, uniform maturity, and no obvious defects, and pre-cool it within 3 hours after harvesting, stack the lettuce neatly in the sample basket, and put it into a pre-cooling vacuum machine (Dongguan Kemeisi Refrigeration Equipment Co., Ltd., VC-1601) in the vacuum chamber for pre-cooling treatment, the pre-cooling time is set to 12min through the operation panel, and the final pre-cooling temperature is 1°C. Turn on the acidic oxidation potential water generator (Guangzhou Meimei Medical Technology Co., Ltd., AEOW-2000), after pre-cooling for 5 minutes, start the first stage to spray acidic oxidation potential water, the duration is 30s, the holding time and the second stage to spray acidic oxidation potential water The time is 20s, and the repressing time is 1min. After the pre-cooling final temperature is reached, repressurization is carried out immediately: the pre-mixed gas (Dansensor gas mixer: Denmark Dansensor company, MAPMixProV3-Gas)...

Embodiment 2

[0066] Choose green peppers with consistent maturity, clean, fresh, crisp and tender, free from rot, odor, chilling damage, freezing damage, and machine damage as raw materials, and pre-cool them within 3 hours after picking, stack the green peppers neatly in the sample basket, and put them in the pre-cooling The pre-cooling treatment is carried out in the vacuum chamber of the vacuum machine (Dongguan Kemeisi Refrigeration Equipment Co., Ltd., VC-1601). The pre-cooling time is set to 40 minutes through the operation panel, and the final pre-cooling temperature is 15°C. Turn on the acidic oxidation potential water generator (Guangzhou Meimei Medical Technology Co., Ltd., AEOW-2000), pre-cool for 10 minutes and start the first stage of spraying acidic oxidation potential water, the duration of 150s, the holding time and the second stage of spraying acidic oxidation potential water The time is 60s, and the repressing time is 3min. After the pre-cooling final temperature is reach...

Embodiment 3

[0070] Choose broccoli with the same maturity and size, uniform color, no obvious defects, no mechanical damage, diseases and insect pests, and stack them neatly in the sample basket, and put them into the pre-cooling vacuum machine (Dongguan Kemeisi Refrigeration Equipment) within 3 hours after harvesting. Co., Ltd., VC-1601) vacuum pre-cooling treatment is carried out in the vacuum chamber, the pre-cooling time is set to 21min through the operation panel, and the final pre-cooling temperature is 5°C. Turn on the acidic oxidation potential water generator (Guangzhou Meimei Medical Technology Co., Ltd., AEOW-2000). After 7 minutes of pre-cooling, start the first stage of spraying acidic oxidation potential water for 90s, the holding time and the second stage of spraying acidic oxidation potential water for 40s, and the repressurization time for 2 minutes. After the pre-cooling final temperature is reached, repressurization is carried out immediately after the pre-cooling final...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of picked fresh plant preservation and discloses a preservation method of fresh plants by combination of vacuum pre-cooling and acidic electrolyzed oxidizing water treatment. The preservation method comprises the following steps: (1), screening the fresh plants picked from the field, so that fresh plants which are uniform in size, accordant in ripeness and free of obvious defects are obtained; (2), performing vacuum pre-cooling on the fresh plants selected in the step (1) in a vacuum pre-cooling machine; (3), sprinkling the acidic electrolyzed oxidizing water during the pre-cooling process for 30-150 seconds, turning off the vacuum pump when the final temperature of the pre-cooling is reached, maintaining low-pressure state of the vacuum cavity while sprinkling the acidic electrolyzed oxidizing water again, and stopping sprinkling when the pressure maintaining is over; (4), introducing pre-configured mixed air into the vacuum cavity after the pressure maintaining until the pressure in the vacuum cavity is recovered; and (5), taking the pressure-recovered fresh plants from the pre-cooling machine, carrying out modified atmosphere packaging, and refrigerating the packed fresh plants. The method is suitable to wide varieties of vegetables and simple to operate, and is capable of effectively prolonging shelf lives of the products.

Description

technical field [0001] The invention belongs to the technical field of post-harvest preservation of fresh plants, and in particular relates to a method for treating fresh plants with vacuum precooling combined with acid oxidation potential water. Background technique [0002] Fresh plants are still fresh organisms after harvest, and the continuous respiratory metabolism consumes the substances in the body, making the plants gradually aging and corrupting. In addition, many microorganisms adhere to the surface of fresh plants, and these microorganisms will accelerate the decline of vegetable freshness and deterioration of quality. The growth and reproduction of pathogenic microorganisms will directly affect the edible safety of fresh vegetables and endanger human health. [0003] Therefore, to prolong the preservation period of fresh plants, it is necessary to reduce the temperature on the one hand to maintain its living state while weakening the respiration and metabolism, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/148A23B7/04A23B7/157
CPCA23B7/148A23B7/04A23B7/157
Inventor 朱志伟吴欣蔚孙大文
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products