Method for quickly thawing frozen pork

A technology of freezing pork and pork, which is applied in the direction of freezing/cooling to preserve meat/fish, etc., which can solve the problems of insufficient radio frequency understanding and few radio frequency equipment, and achieve the effects of improving enterprise competitiveness, convenient operation, and high efficiency

Inactive Publication Date: 2015-10-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of radio frequency in the food industry in China is not as common as that of microwave, mainly because there are not many radio frequency equipment and people's understanding of radio frequency is not deep enough.

Method used

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  • Method for quickly thawing frozen pork
  • Method for quickly thawing frozen pork
  • Method for quickly thawing frozen pork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) When thawing for the first time, drill a temperature measuring hole on the meat piece: Take a piece of frozen pork hind leg meat at -18°C with a length of 15cm×15cm×6cm, and drill it from the center of the side of the meat to the center of the meat with an electric drill Drill a hole with a diameter slightly larger than the diameter of the fiber optic thermometer probe, and the depth is to reach the center of the meat piece. Insert the fiber optic thermometer probe into the bottom of the well.

[0026] (2) Select a frequency of 27.12MHz and a plate voltage of 8kV, place the meat between the two plates, set the distance between the plates to 12cm, turn on the power, observe the display of the fiber optic thermometer, stop thawing when the temperature of the center of the meat is -5°C .

[0027] Table 2 shows the results of radio frequency thawing compared with air thawing (temperature 15° C., relative humidity 95%) in this embodiment. It can be seen that the radio ...

Embodiment 2

[0031] (1) When thawing for the first time, drill a temperature measuring hole on the meat piece: Take a piece of frozen pork hind leg meat at -18°C with a length of 15cm x width 15cm x thickness 8cm, and drill it from the center of the side of the meat to the center of the meat with an electric drill Drill a hole with a diameter slightly larger than the diameter of the fiber optic thermometer probe, and the depth is to reach the center of the meat piece. Insert the fiber optic thermometer probe into the bottom of the well.

[0032] (2) Select the radio frequency thawing equipment with a frequency of 27.12MHz and a plate voltage of 7.2kV, place the meat between the two plates, set the distance between the plates to 15cm, turn on the power, and observe the display of the optical fiber thermometer. When the temperature of the center of the meat is - Stop thawing at 2°C.

[0033] The results of radio frequency thawing and microwave thawing (frequency 2450MHz, input power 1300W, ...

Embodiment 3

[0038] (1) When thawing for the first time, drill a temperature measuring hole on the meat piece: Take a piece of frozen pork hind leg meat at -18°C with a length of 15cm x width 15cm x thickness 12cm, and use an electric drill to drill the meat piece from the center of the side of the meat piece to the center of the meat piece Drill a hole with a diameter slightly larger than the diameter of the fiber optic thermometer probe, and the depth is to reach the center of the meat piece. Insert the fiber optic thermometer probe into the bottom of the well.

[0039] (2) Select a radio frequency thawing device with a frequency of 27.12MHz and a plate voltage of 7.2kV, place the meat between the two plates, set the distance between the plates to 20cm, turn on the power, and observe the display of the optical fiber thermometer. When the temperature of the center of the meat is - Stop thawing at 2°C.

[0040] The results of radio frequency thawing in this embodiment are listed in Table ...

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Abstract

The invention relates to a method for quickly thawing frozen pork, in which radio frequency equipment with the frequency of 27.12 MHz is employed to quickly thaw bulk frozen pork. The process is as follows: placing the bulk frozen pork in a space between two metal polar plates of the radio frequency equipment, setting a spacing between the polar plates, starting a radio frequency power supply to perform thawing, and stopping thawing when the temperature at the center of the bulk pork reaches -5-0 DEG C. With the adoption of the method, thawing can be quickly achieved, it only takes few tens of minutes to thaw thick bulk frozen pork, and furthermore, temperature distribution in the pork is uniform after thawing, and little thawing liquid is lost with few contaminant colonies.

Description

technical field [0001] The invention relates to the technical field of food industry, in particular to a method for rapidly thawing block frozen pork through radio frequency thawing equipment. Background technique [0002] Freezing is a better way to keep meat quality stable, but frozen meat often needs to be thawed before use. The thawing process has an effect on the meat quality. Traditional thawing methods, such as air thawing and water thawing, rely on heat transfer from the surface of the meat to the interior, not only the thawing time is as long as 10 to 24 hours, but also the quality of thawed pork is poor, such as high juice loss rate, easy to be contaminated by microorganisms Wait. Microwaves can be used to thaw. The advantage is that the thawing speed is fast. The disadvantage is that the temperature of the surface of the meat after thawing is very different from the temperature of the center, especially for thick meat. The reason is that the microwave frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B4/07
Inventor 谢正军郭洁玉赵建伟徐学明金征宇周星田耀旗王玉川
Owner JIANGNAN UNIV
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