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Non-thermal sterilization method for apple cloudy juice

A technology for turbid juice and apples, applied in food science and other directions, can solve the problems of high energy consumption and long time consumption, and achieve the effects of low energy consumption, prolonged processing time and good flavor

Inactive Publication Date: 2008-07-09
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the continuous treatment method is mainly used in the world to sterilize and kill enzymes, which can achieve a certain bactericidal effect, but it takes a long time and consumes a lot of energy. It is necessary to further improve the bactericidal effect and shorten the total processing time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Reactor sterilization: soak the reactor with sterilizing solution, drain the sterilizing solution and then clean the reactor with sterile water. The preferred sterilizing solution is chlorine dioxide;

[0025] 2. Input the product to be processed: use a vacuum pump to form a vacuum, and suck the turbid apple juice into the reaction kettle;

[0026] 3. Temperature control: Control the internal temperature of the reactor at 20°C by adjusting the water bath circulation device;

[0027] 4. Pulse-type high-density carbon dioxide sterilization treatment: a. Inject high-density carbon dioxide and increase the pressure to 5MPa; b. Treat for 5 minutes at a temperature of 20°C and a pressure of 5MPa; c. Release carbon dioxide after the treatment is completed, making the reactor The pressure is reduced to normal pressure; d. Repeat operations a to c several times (so that the total treatment time is 30min), and perform pulse-type high-density carbon dioxide sterilization treatm...

Embodiment 2

[0031] 1. Reactor sterilization: soak the reactor with sterilizing solution, drain the sterilizing solution and then clean the reactor with sterile water. The preferred sterilizing solution is chlorine dioxide;

[0032] 2. Input the product to be processed: use a vacuum pump to form a vacuum, and suck the turbid apple juice into the reaction kettle;

[0033] 3. Temperature control: Control the internal temperature of the reactor at 35°C by adjusting the water bath circulation device;

[0034] 4. Pulse high-density carbon dioxide sterilization treatment: a. Inject high-density carbon dioxide and increase the pressure to 15MPa; b. Treat for 10 minutes at a temperature of 35°C and a pressure of 15MPa; c. Release carbon dioxide after the treatment is completed, making the reactor The pressure is reduced to normal pressure; d. Repeat operations a to c several times (so that the total treatment time is 30min), and perform pulse-type high-density carbon dioxide sterilization treatmen...

Embodiment 3

[0038] 1. Reactor sterilization: soak the reactor with sterilizing solution, drain the sterilizing solution and then clean the reactor with sterile water. The preferred sterilizing solution is chlorine dioxide;

[0039] 2. Input the product to be processed: use a vacuum pump to form a vacuum, and suck the turbid apple juice into the reaction kettle;

[0040] 3. Temperature control: Control the internal temperature of the reactor at 45°C by adjusting the water bath circulation device;

[0041] 4. Pulse high-density carbon dioxide sterilization treatment: a. Introduce high-density carbon dioxide and increase the pressure to 30MPa; b. Treat for 15 minutes at a temperature of 45°C and a pressure of 30MPa; c. Release carbon dioxide after the treatment is completed, making the reactor The pressure is reduced to normal pressure; d. Repeat operations a to c several times (so that the total treatment time is 30min), and perform pulse-type high-density carbon dioxide sterilization treat...

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Abstract

The invention discloses a liquid food novel non-thermal sterilization method, in particular a non-thermal sterilization method of cloudy apple juice which belongs to the food processing technology field. The technical scheme includes adopting the aseptic operation to send the cloudy apple juice into a reaction vessel and adopting pulse type carbon dioxide with high density for the sterilization. The concrete operation step is: firstly, pumping carbon dioxide with high density into the reaction vessel; secondly, treating for a certain period at the set temperature and pressure condition; thirdly, releasing the carbon dioxide after the treatment to lower the pressure in the reaction vessel to the normal pressure; fourthly, operating the steps from the first to the third repeatedly for more than two times for the pulse type carbon dioxide with high density treatment. The killing effect of Escherichia coli in the cloudy apple juice which is processed in the invention can achieve the result of lowering at least five logarithms to satisfy the commercial aseptic requirement. Compared with the present non-thermal sterilization method, the invention has more obvious sterilization effect and can shorten the treatment time and save energy. The invention has the advantages of low processing temperature, energy saving and environmental protection and can maintain the good flavor of the cloudy apple juice.

Description

technical field [0001] The invention relates to a novel non-thermal sterilization method for liquid food, in particular to a non-thermal sterilization method for turbid apple juice, and belongs to the technical field of food processing. Background technique [0002] Cloudy apple juice is a typical representative of mixed fruit juice. As an important NFC (not from concentrated juice, that is, freshly squeezed juice) juice, it is the fruit juice product closest to fresh apples in nutritional value and flavor. Because it is rich in sugar and water, as well as a small amount of protein and trace minerals, cloudy apple juice has become a breeding ground for the growth of most microorganisms. E.coli is the most dominant and most abundant bacterium in the intestinal tract of humans and many animals, mainly parasitic in the large intestine. When it invades some parts of the human body, it can cause infection, such as peritonitis, cholecystitis, cystitis and diarrhea. Symptoms of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L2/44
Inventor 廖小军廖红梅胡小松张燕
Owner CHINA AGRI UNIV
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