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Two-step ultrahigh-pressure sterilization method of liquid matter

A technology of ultra-high pressure sterilization and liquid substances, which is applied in the direction of sterilization/microdynamic water/sewage treatment, food science, food preparation, etc., and can solve problems such as ineffective sterilization, reduction of ultra-high pressure and process continuity.

Active Publication Date: 2010-09-15
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the current situation that the current ultra-high pressure sterilization method can not effectively sterilize the pressure-resistant bacteria in the liquid substance, the present invention aims to provide a sterilization method for effectively killing the pressure-resistant bacteria in the liquid substance. The technical problem to be solved is to reduce the pressure of the ultra-high pressure and process continuity

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0011] Non-limiting examples are described as follows:

[0012] 1. Fruit and vegetable juice: Taking orange juice as an example, the first step is continuous dynamic sterilization with ultra-high pressure process pump at ultra-high pressure 100-400MPa; the second step is sterilization with static ultra-high pressure at 100-600MPa, and the holding time is ≤15min .

[0013] 2. Mineral water: The first step is to use an ultra-high pressure process pump to continuously and dynamically sterilize at an ultra-high pressure of 100-300 MPa; the second step is to use a static ultra-high pressure to sterilize at a temperature of 100-500 MPa, and the holding time is ≤ 10 minutes.

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Abstract

The invention relates to a two-step ultrahigh-pressure sterilization method of liquid matter, which is a two-step method combining both a dynamic processing and a static processing. The two-step ultrahigh-pressure sterilization method is characterized by comprising the following steps of: (1) dynamically and continuously processing the liquid matter at the pressure of 100-400 MPa; and (2) statically processing the liquid matter at the pressure of 100-600 MPa. The two-step sterilization process is carried out at 80 DEG C. The sterilization method can reduce the pressure of static ultrahigh-pressure sterilization to below 600 MPa, simultaneously ensures the killing effect on pressure-resistant bacteria and meets the requirements of food sanitation.

Description

1. Technical field [0001] The invention relates to a sterilization method, in particular to a liquid substance sterilization method, to be precise a two-step ultra-high pressure sterilization method for liquid substances. 2. Background technology [0002] Sterilization is a common unit process in the biological, food, beverage, and pharmaceutical industries. Heat sterilization often causes denaturation and odor. Ultra-high pressure sterilization can avoid the thermal denaturation of the processed object and maintain the original flavor of the material to the greatest extent; the so-called ultra-high pressure sterilization usually uses a pressure of about 600MPa to sterilize at room temperature; for pressure-resistant bacteria, such as Bacillus, even It is also difficult to achieve the killing effect even when the pressure reaches 1000MPa. [0003] Although ultra-high pressure sterilization has significant advantages, it is necessary to solve the problems of high pressure a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/015A23L2/70C02F1/50A23L5/20
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