Livestock and poultry meat freezing and unfreezing methods

Abstract

The invention provides a livestock and poultry meat freezing and unfreezing method. The freezing method comprises freezing fresh livestock and poultry meat in a freezer or a refrigerator with an electrostatic field device, wherein the output voltage of the electrostatic field is 2400-2600V, the current is 0.1-0.3mA, the freezing temperature is -22 to -18 DEG C, and the freezing time is 22-26 hours. The invention further provides an unfreezing method of the frozen livestock and poultry meat. The unfreezing method comprises unfreezing the frozen livestock and poultry meat in the freezer or the refrigerator with the electrostatic field device, wherein the unfreezing temperature is 2-6 DEG C, the unfreezing time is 22-26 hours, the output voltage of the electrostatic field is 2400-2600V, and the current is 0.1-0.3mA. Through the freezing and unfreezing under the electrostatic field condition, the juice loss of the frozen meat is reduced, and the quality of the unfrozen meat is improved, and the unfreezing time is shortened.

Description

technical field [0001] The invention belongs to the field of agricultural product processing, in particular to a method for freezing and thawing livestock and poultry meat. Background technique [0002] my country is the country with the largest amount of meat production and sales in the world, and pork accounts for 47% of my country's meat production. Frozen meat is the most important product form in meat production, transportation, and import and export trade circulation. Frozen meat is used as one of the important means for national meat reserves, regulation of meat market, and meat import and export trade. And meat processing occupies a very important position. Frozen meat needs to be thawed before being used as raw material for meat processing. Conventional thawing will cause serious thawing loss and quality deterioration, causing losses to meat production and consumption. [0003] The final quality of frozen meat depends not only on freezing technology but also on th...

AI Technical Summary

Problems solved by technology

In recent years, there have also been reports on the application of high-voltage electrostatic technology for pork preservation. Studies have found that high-voltage static electricity has beneficial effects on fresh meat tenderness and related eating quality, and significantly shortens the thawing time. Electric field thawing shows many advantages. However, most domestic electrostatic processing devices use direct current. The high-voltage generator outputs a high voltage, which is then applied to two parallel aluminum plates with a certain distance to form an electric field of a certain strength. The food needs to be in direct contact with the aluminum plate. Therefore, the current domestic electrostatic preservation technology can only be used for small batches of food. deal with

Moreover, the high-voltage electrostatic field has its own limitations due to the high output voltage

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