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CN-121986826-A - Duck liver fresh-keeping process and processing device based on low temperature heat treatment

CN121986826ACN 121986826 ACN121986826 ACN 121986826ACN-121986826-A

Abstract

The invention discloses a duck liver fresh-keeping process and a processing device based on low-temperature heat treatment, comprising the following steps of cleaning and sorting duck livers; placing the cleaned and sorted duck liver in a low-temperature heat treatment device for low-temperature heat treatment, placing the duck liver subjected to the low-temperature heat treatment in a high-pressure treatment device for high-pressure treatment, placing the duck liver subjected to the high-pressure treatment in a radiation sterilization device for radiation sterilization, and packaging the duck liver subjected to the radiation sterilization. The invention combines high-pressure treatment and radiation sterilization technology to thoroughly inactivate bacteria, mold, saccharomycetes and bacterial spores in a deeper level, ensures that the quality of the microorganisms at the inner part and the outer part of the product meets the standard, thereby effectively prolonging the shelf life of the product.

Inventors

  • Chen Baobang

Assignees

  • 霍邱悯农禽业有限公司

Dates

Publication Date
20260508
Application Date
20260210

Claims (10)

  1. 1. The duck liver fresh-keeping process based on low temperature heat treatment is characterized by comprising the following steps of: step S1, placing duck livers in a primary cleaning and sorting device, and cleaning and sorting to obtain duck livers meeting the requirements; S2, placing the cleaned and sorted duck livers in a low-temperature heat treatment device, and performing low-temperature heat treatment for 45 minutes in an environment with the temperature of 50 ℃; Step S3, placing the duck liver subjected to low-temperature heat treatment in a high-pressure treatment device, and applying high-pressure treatment with the pressure of 400MPa and the duration of 10 minutes; step S4, placing the duck liver subjected to high-pressure treatment in a radiation sterilization device, and performing radiation sterilization treatment of 2 kGy; And S5, packaging the duck liver subjected to radiation sterilization treatment by using an air-conditioning packaging or vacuum packaging mode, and storing the duck liver in an environment of 0-4 ℃ and 85-95%.
  2. 2. The duck liver preservation process based on low temperature heat treatment according to claim 1, wherein in the step S1, fresh duck liver is subjected to pretreatment, and the pretreatment comprises soaking the duck liver in clear water, and lightly rubbing to remove any residual blood clots or dirt.
  3. 3. The duck liver preservation process based on low temperature heat treatment according to claim 1, wherein in the step S2, the temperature range of the low temperature heat treatment is 40-60 ℃, and the time range of the low temperature heat treatment is 30 minutes-1 hour.
  4. 4. The duck liver preservation process based on low temperature heat treatment according to claim 1, wherein in the step S3, the high pressure of the high pressure treatment is 300MPa to 600MPa, and the time of the high pressure treatment is 5 minutes to 15 minutes.
  5. 5. The duck liver preservation process based on low temperature heat treatment according to claim 1, wherein in the step S4, the radiation is gamma-ray or electron beam radiation, and the radiation value ranges from 1.5kGy to 3kGy.
  6. 6. The duck liver preservation process based on low temperature heat treatment according to claim 1, wherein in the step S5, a vacuum packaging mode is adopted for sealing by a polyethylene plastic bag.
  7. 7. The processing device of the duck liver preservation process based on low-temperature heat treatment according to the claims 1-6 is characterized by comprising a primary cleaning and sorting device, a low-temperature heat treatment device, a high-pressure treatment device, a radiation sterilization device and a packaging and storage device; The primary cleaning and sorting device consists of a cleaning water tank, a conveyor belt system and a sorting machine capable of automatically removing defective products; The low-temperature heat treatment device consists of a temperature control system, an automatic drainage system and a constant-temperature controller for ensuring constant-temperature treatment; The high-pressure treatment device consists of a high-pressure processing tank and a control module for controlling pressure and time; the radiation sterilization device consists of a ray or electron beam radiation device and a control module for controlling radiation dose; the packaging and storing device consists of an automatic packaging machine, a storage warehouse, a temperature and humidity sensor for controlling the temperature and humidity of a storage environment and a controller.
  8. 8. The processing device of the duck liver preservation process based on low temperature heat treatment according to claim 7, wherein the constant temperature controller for guaranteeing the constant temperature treatment comprises heating elements, a circulating water channel and a PID controller which are uniformly arranged.
  9. 9. The processing device of the duck liver preservation process based on low temperature heat treatment according to claim 7, wherein the control module for controlling the pressure and the time comprises a high-pressure pump and a pressure sensor, and the pressure in the processing tank is monitored and adjusted in real time, and the processing duration is set.
  10. 10. The processing device of the duck liver preservation process based on low temperature heat treatment according to claim 7, wherein the control module for controlling the radiation dose comprises a dose monitoring instrument and a control system, and is used for monitoring the radiation dose in real time and adjusting the output of the radiation source.

Description

Duck liver fresh-keeping process and processing device based on low temperature heat treatment Technical Field The invention relates to the field of food preservation, in particular to a duck liver preservation process based on low-temperature heat treatment and a processing device. Background The duck liver is a liver organ in the duck body, is an edible animal viscera, and has great edible and nutritional values. The duck liver is tender in texture, delicious in taste and rich in protein, fat, vitamins, minerals and other nutrient components. Wherein, the protein is an important nutrient necessary for the growth and development of human body and maintaining normal physiological functions, while the fat in duck liver is mainly unsaturated fatty acid, which is helpful for regulating blood fat and protecting cardiovascular and cerebrovascular health. In addition, duck liver also contains abundant vitamin A, vitamin B, vitamin E, etc., and has positive effects on protecting vision, improving nervous system function and enhancing immunity. The existing duck liver preservation technology mainly comprises methods of freezing, vacuum packaging, air-conditioning packaging and the like. In addition, in recent years, a thermal low-temperature heat treatment technology is also attracting attention, and the thermal low-temperature heat treatment technology is an emerging food processing technology, and the purposes of sterilization and fresh-keeping are achieved by performing short-time heat treatment on food at a low temperature. For duck livers, the heat low-temperature heat treatment technology is adopted, so that surface microorganisms can be effectively killed under the condition that the taste and nutritional ingredients of the duck livers are not affected, and the aging speed of the duck livers is delayed, so that the shelf life of the duck livers is prolonged. Although the low-temperature heat treatment method can effectively kill surface microorganisms and delay the aging speed of duck livers so as to prolong the shelf life of the duck livers, a single low-temperature heat treatment method can not completely kill microorganisms with stronger heat resistance or spore forms, such as bacillus and the like, and the microorganisms still can survive and cause the deterioration of the duck livers under the low-temperature condition. Disclosure of Invention The invention aims to provide a duck liver fresh-keeping process based on low-temperature heat treatment and a processing device, so as to solve the problems in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: A duck liver fresh-keeping process based on low temperature heat treatment comprises the following steps: step S1, placing duck livers in a primary cleaning and sorting device, and cleaning and sorting to obtain duck livers meeting the requirements; S2, placing the cleaned and sorted duck livers in a low-temperature heat treatment device, and performing low-temperature heat treatment for 45 minutes in an environment with the temperature of 50 ℃; Step S3, placing the duck liver subjected to low-temperature heat treatment in a high-pressure treatment device, and applying high-pressure treatment with the pressure of 400MPa and the duration of 10 minutes; step S4, placing the duck liver subjected to high-pressure treatment in a radiation sterilization device, and performing radiation sterilization treatment of 2 kGy; And S5, packaging the duck liver subjected to radiation sterilization treatment by using an air-conditioning packaging or vacuum packaging mode, and storing the duck liver in an environment of 0-4 ℃ and 85-95%. Preferably, in step S1, the fresh duck liver is subjected to pretreatment, wherein the pretreatment includes soaking the duck liver in clear water, and lightly rubbing to remove any residual blood clots or dirt. Preferably, in the step S2, the temperature range of the low-temperature heat treatment is 40 ℃ to 60 ℃, and the time range of the low-temperature heat treatment is 30 minutes to 1 hour. Preferably, in the step S3, the high pressure range of the high pressure treatment is 300MPa to 600MPa, and the time range of the high pressure treatment is 5 minutes to 15 minutes. Preferably, in the step S4, the radiation is gamma ray or electron beam radiation, and the radiation value ranges from 1.5kGy to 3kGy. Preferably, in the step S5, the vacuum packaging mode is a polyethylene plastic bag. A processing device of duck liver fresh-keeping technology based on low temperature heat treatment comprises a primary cleaning and sorting device, a low temperature heat treatment device, a high pressure treatment device, a radiation sterilization device and a packaging and storage device; The primary cleaning and sorting device consists of a cleaning water tank, a conveyor belt system and a sorting machine capable of automatically removing defective products; The low-temperature h