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Biological material sterilization method and application thereof

A technology of biomaterials and beverages, which is applied in applications, preservation of food ingredients as antimicrobials, and preparation of alcoholic beverages. It can solve problems such as complex equipment and auxiliary equipment, questionable operational safety, and poor operating conditions. The effects of little impact on sensory and flavor, high safety and convenient operation

Pending Publication Date: 2022-02-08
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while it is sterilizing, it will inevitably bring about the problem of oxidation of easily oxidized substances in food to a certain extent, and it has certain limitations for fat-rich foods.
And the equipment used in this method is also open to question in terms of operational safety.
[0008] To sum up, the current mainstream thermal sterilization methods in the food field often have problems such as high energy consumption, affecting sensory quality, flavor and nutritional value, and complex equipment and auxiliary equipment; non-thermophysical sterilization methods exist more or less Problems such as poor sterilization effect, poor safety of operating conditions, complex equipment, etc.

Method used

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  • Biological material sterilization method and application thereof
  • Biological material sterilization method and application thereof
  • Biological material sterilization method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0058] A sterilizing method for fresh milk, said sterilizing method comprising the steps of:

[0059] (1) Put the fresh milk in a shaker at 20° C. with a rotation speed of 120 rpm for 12 hours, and carry out enrichment culture until the total number of colonies is 7.5 log to obtain pretreated fresh milk;

[0060] (2) Take 200mL of fresh milk pretreated in step (1) and place it in figure 1 In the treatment tank with cathode plate and anode plate installed as shown, the outside of the treatment tank is controlled by a 20°C low-temperature thermostat, so that the maximum temperature in the treatment tank is controlled at 55°C. Under the combined mode of constant pressure and constant current, The electric field strength is 9V / cm, the upper limit of the current is set to 0.6A (that is, when the system current increases to 0.6A, it will automatically switch to the constant current mode), and a low-voltage direct current electric field is applied to the treatment tank for 120min to ...

Embodiment 2

[0062] A sterilizing method for fresh milk, said sterilizing method comprising the steps of:

[0063] (1) Put the fresh milk in a shaker at 20° C. with a rotation speed of 120 rpm for 12 hours, and carry out enrichment culture until the total number of colonies is 7.5 log to obtain pretreated fresh milk;

[0064] (2) Put 200mL of fresh milk pretreated in step (1) into figure 1 In the treatment tank with the cathode plate and the anode plate installed as shown, the outside of the treatment tank is controlled by a 18°C ​​low-temperature thermostat, so that the maximum temperature in the treatment tank is controlled at 55°C. Under the condition of a constant current of 0.6A, A low-voltage direct current electric field with a strength of 0.01-100 V / cm is applied to the treatment tank for 150 minutes to complete the sterilization treatment of the fresh milk.

Embodiment 3

[0066] A kind of sterilizing method of fresh milk, described sterilizing method comprises: 200mL fresh milk (total number of colonies is 4.8log) is placed in such as figure 1 In the treatment tank with the cathode plate and the anode plate installed as shown, the outside of the treatment tank is controlled by a 23°C low-temperature thermostat, so that the maximum temperature in the treatment tank is controlled at 55°C. Under the condition of a constant current of 0.6A, A low-voltage direct current electric field with a strength of 0.01-100 V / cm is applied to the treatment tank for 90 minutes to complete the sterilization treatment of the fresh milk.

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Abstract

The invention provides a biological material sterilization method and application thereof; the sterilization method comprises the following steps: applying a low-voltage electric field to the biological material, the field intensity of the low-voltage electric field being 0.01-100V / cm, the application time of the low-voltage electric field being 0.5-300min, and completing sterilization treatment of the biological material. By controlling the intensity and the application time of the low-voltage electric field, the biological material is effectively sterilized at a relatively low temperature; the sterilization method is low in energy consumption and small in influence on the sense organ and flavor of the biological material, so that the nutritional value of the biological material is not damaged; equipment used in the sterilization method is simple, convenient to operate and low in current and voltage; therefore, the safety is very high, and industrial application is easy to realize.

Description

technical field [0001] The invention belongs to the technical field of food sterilization, and in particular relates to a biological material sterilization method and application thereof. Background technique [0002] Sterilization technology is one of the important technologies in food and other industries. It is a key process in food processing that determines food safety, nutrition, flavor, and quality. Therefore, it is closely related to human health, the utilization efficiency of food resources, and the commercial value of products. [0003] At present, common sterilization techniques can be divided into two categories: thermal sterilization and non-thermal sterilization. Thermal sterilization is relatively widely used in the traditional food processing industry, mainly including pasteurization, high temperature sterilization, ultra-high temperature instantaneous sterilization, ohmic heating, etc. Their common feature is to use heat to kill microorganisms in food to en...

Claims

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Application Information

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IPC IPC(8): A23L2/50A23L3/32A23B5/015A23C3/00C12H1/16
CPCA23L2/50A23L3/32A23B5/015A23C3/00C12H1/16A23V2002/00A23V2300/12A23V2200/10
Inventor 齐祥明季飞宏孙敬毛相朝林洪
Owner OCEAN UNIV OF CHINA
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