Tunnel type microwave sterilization device and method for sterilizing starch type raw materials by microwave

A microwave sterilization and tunnel technology, applied in application, food science, food preservation, etc., can solve problems such as difficulty in completely killing Bacillus spores, impact on food quality, etc., and achieve reduced nutrient loss, good sterilization effect, and application prospects. expansive effect

CN109329695AInactive Publication Date: 2019-02-15GUANGDONG JIASHILI FOOD GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a tunnel type microwave sterilization device and a method for sterilizing starch type raw materials by microwave. The method for sterilizing the starch type raw materials by microwave is characterized in that a feeding mode and a transfer mode of the materials are determined according to the properties of the starch type raw materials to be sterilized, and the microwave sterilization effects are controlled by adjusting microwave power, sterilization time, material transfer rate, material feeding height and other process parameters. The sterilization method has high efficiency, short time and uniform sterilization, has good sterilizing effects aiming at microorganisms, particularly bacillus, in the starch type raw materials, has a bactericidal and fungicidal rate of99-100%, prolongs the storage time of the starch type raw materials, reduces nutrient loss, better maintains the color, fragrance, taste and nutrients of the materials, and has energy saving property,high efficiency, safety, no harm and broad application prospects.
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Description

Technical field:

[0001] The invention belongs to the technical field of microwave sterilization, and in particular relates to a tunnel type microwave sterilization device and a method for sterilizing starch raw materials by using microwaves. Background technique:

[0002] At present, the more commonly used food sterilization technology at home and abroad is mainly traditional heat sterilization, but the quality and nutritional content of food will be damaged to a certain extent while heat sterilization is heating. Therefore, some new sterilization technologies such as ultra-high pressure sterilization, pulsed electric field sterilization, and microwave sterilization have attracted much attention.

[0003] Microwave is a kind of electromagnetic wave. At present, the microwave frequencies commonly used in my country's food industry are 915MHz and 2450MHz, of which microwave ovens are generally 2450MHz, with strong penetrating power, mainly used for drying, thawing, etc., and 9...

Examples

Embodiment 1

[0027] Such as figure 1 As shown, the tunnel-type microwave sterilization device of the present invention includes a support 1, on which a material delivery mechanism 2 and a microwave sterilization tunnel 3 are arranged, and the material delivery mechanism 2 includes a conveyor belt 21 and a belt power unit 22, and the conveyor belt 21 Through the microwave sterilization tunnel 3, the materials can be transferred to the microwave sterilization tunnel 2 for sterilization. The microwave sterilization tunnel 3 is provided with a visible door 4 and a microwave generator 5. The microwave frequency of the microwave generator is 2450 MHz. The visible door 4 is provided with an automatic power-off protection device for opening the door, which can monitor the inside of the microwave sterilization tunnel 3 at any time. The situation of the microwave sterilization tunnel 3 can also be inspected, and the microwave sterilization tunnel 3 can be overhauled. When the visible door 4 is opene...

Embodiment 2

[0033] Utilize the microwave to sterilize the barley powder, comprising the following steps:

[0034] a) Turn on the main power switch of the tunnel microwave sterilization device in Example 1, set the microwave power: 2000Kw; sterilization time: 120 seconds; transmission speed: 1m / min; feed height: 80mm; Turn on microwave sterilization;

[0035] b) Put the barley powder into the vibrating feeding hopper, drop it on the conveyor belt for conveying, scrape off the adjustable scraper and adjust the feeding height, pass through the microwave suppressor at the feeding port, and send it to the microwave sterilization tunnel for microwave Sterilization, after the sterilization is completed, it is sent through the microwave suppressor at the discharge port to the discharge hopper for discharge, realizing the continuous transmission and sterilization of the barley powder.

[0036] The use of microwaves to sterilize barley powder has high efficiency, short time, and uniform sterilizat...

Embodiment 3

[0038] Utilize microwave to sterilize red bean powder, comprise the following steps:

[0039] a) Turn on the main power switch of the tunnel microwave sterilization device in Example 1, set microwave power: 1000Kw; sterilization time: 240 seconds; transmission speed: 3m / min; feed height: 80mm; sterilization temperature: 70°C, Turn on microwave sterilization;

[0040] b) Put the red bean powder into the vibrating feeding hopper, drop it on the conveyor belt for transmission, scrape off the adjustable scraper and adjust the feeding height, pass through the microwave suppressor at the feeding port, and send it to the microwave sterilization tunnel for microwave Sterilization, after the sterilization is completed, it is sent through the microwave suppressor at the discharge port to the discharge hopper for discharge, realizing the continuous transmission and sterilization of red bean powder.

[0041] The use of microwaves to sterilize red bean powder has high efficiency, short ti...