Food refrigeration and fresh-keeping method

A fresh-keeping method and food refrigeration technology, which are applied in food preservation, fruit and vegetable preservation, and fruit/vegetable preservation through freezing/refrigeration, etc., can solve problems such as loss of water in fruits and vegetables, dry consumption of fruits or vegetables, affecting quality and sales volume, etc. , to reduce the number of molds, prevent the loss of nutrients, and prolong the shelf life

Inactive Publication Date: 2017-07-04
HENAN UNIV OF ANIMAL HUSBANDRY & ECONOMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, fresh fruits and vegetables are cooled and refrigerated during the period of sorting and refrigerating. Although it can slightly prolong the preservation time of fruits and vegetables, it only suppresses the respiration of fruits or vegetables from the aspect of temperature. There will still be a large amount of water loss in fruits and vegetables, resulting in dry consumption, rot and deterioration of fruits or vegetables, seriously affecting their quality and sales, and bringing huge losses to business operators, and the power consumption is large, which greatly increases refrigeration cost
[0004] Therefore, existing refrigerated and fresh-keeping technology can not satisfy people's demand, urgently needs a kind of food refrigerated and fresh-keeping method that can keep fresh and harmless to fruit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A cold preservation method for apples, comprising the steps of: transporting apples to a cool and cool place in time after harvesting, performing quality classification, and removing defective products to obtain fresh apples; soaking apples in rice-washing water, and using aseptic Wash with water to obtain rice-washing water-treated apples; prepare a mixed enzyme solution, apply the mixed enzyme solution to the surface of the rice-washing water-treated apples, leave for 1.5 hours, and then wash with sterile water, wherein each liter of mixed enzyme solution contains 3g of lysozyme , 5g cellulase and 20ml vinegar, and the solvent is sterile water; spray 0.2mol / L sodium bicarbonate solution on the surface of the processed apples, and finally clean them with precooled sterile water to obtain sterilized apples; The sterilized apples are soaked in the fresh-keeping liquid for 1 min, and then picked up and dried; wherein, the fresh-keeping liquid is prepared from the following...

Embodiment 2

[0026] A method for cold storage and preservation of grapes, comprising the steps of: transporting grapes to a cool and cool place in time after harvesting, performing quality classification, and removing defective products to obtain fresh grapes; Wash to obtain grapes treated with rice-washing water; prepare mixed enzyme solution, smear the mixed enzyme solution on the surface of grapes treated with rice-washing water, leave for 1 hour, and then wash with sterile water, wherein each liter of mixed enzyme solution contains 3g lysozyme, 5g Cellulase and 20ml vinegar, the solvent is sterile water; spray 0.2mol / L sodium bicarbonate solution on the surface of the treated grapes, and finally wash it with pre-cooled sterile water to obtain sterilized grapes; sterilized grapes Soak in the preservative solution for 0.5min, then pick up and dry; wherein, the preservative solution is prepared from the following components in parts by weight: 8 parts of polysaccharides, 1.1 parts of wheat...

Embodiment 3

[0031] A refrigerated and fresh-keeping method for Crown pears, comprising the steps of: transporting Crown pears to a cool place in time after being harvested, performing quality classification, and removing defective products to obtain fresh Crown pears; soaking Crown pears in rice-washing water for 28 minutes Afterwards, wash with sterile water to obtain crown pears treated with rice-washing water; prepare a mixed enzyme solution, apply the mixed enzyme solution to the surface of crown pears treated with rice-washing water, leave for 2 hours, and then wash with sterile water, wherein each liter of mixed enzyme solution Contain 3g lysozyme, 5g cellulase and 20ml vinegar in it, and solvent is sterile water; Spray the sodium bicarbonate solution of 0.2mol / L to the surface of the processed crown pear, clean up with pre-cooled sterile water at last , to obtain the sterilized Crown pear; soak the sterilized Crown pear in the fresh-keeping solution for 0.6min, then pick up and dry;...

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PUM

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Abstract

The invention provides a food refrigeration and fresh-keeping method, and belongs to the technical field of refrigeration and fresh keeping. The specific method comprises the steps: selecting fresh fruits, transporting to a cool place timely after harvesting, carrying out quality grading, and eliminating defective products; soaking the fruits in washing water of rice, and 25-30 min later, cleaning with sterile water, to obtain fruits treated by the washing water of rice; preparing a mixed enzyme solution, coating the surface of the fruits treated by the washing water of rice with the mixed enzyme solution, placing for 1-2 h, then carrying out sterile cleaning to obtain enzyme-treated fruits, spraying the surface of the enzyme-treated fruits with a 0.2 mol/L sodium bicarbonate solution, finally, cleaning cleanly with pre-cooled sterile water to obtain sterilized fruits, soaking for 0.5-1 min in a fresh-keeping solution, then fishing up, and air-drying; and loading the fruits after being soaked in the fresh-keeping solution into polyethylene thin film fresh-keeping bags, putting the packaged fruits in a refrigeration house, and refrigerating with the refrigeration temperature of 0-4 DEG C.

Description

technical field [0001] The invention belongs to the technical field of refrigeration and preservation, and in particular relates to a method for refrigeration and preservation of food. Background technique [0002] Fruit and vegetable production is one of the characteristic agricultural industries and plays an important role in agricultural production. Due to the seasonality, regionality and diversity of fruit and vegetable production, the off-season and peak season of fruit production are obvious. Fruits and vegetables are fresh products with tender tissues, high water content, perishable deterioration, and not resistant to storage and transportation. They are easy to lose their freshness and reduce their quality after harvest, thereby reducing or losing their nutritional value and commodity economic value. In order to enable people to obtain a balanced supply of fruits and vegetables, in addition to strengthening off-season planting, annual stubble arrangements, promotion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154A23B7/155A23B7/157A23B7/04
CPCA23B7/04A23B7/154A23B7/155A23B7/157
Inventor 鲍琳周丹刘群生杜鹃丽程花蕊耿李珊党美珠李云芳袁玉超王明栓杨涛
Owner HENAN UNIV OF ANIMAL HUSBANDRY & ECONOMY
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