An improved vacuum precooling treatment method for rice

A processing method and technology for rice, applied in food science and other directions, can solve the problems of uneven water distribution in rice, increase the risk of microbial contamination, and affect quality, and achieve the effects of avoiding quality deterioration, reducing water loss, and convenient operation.
CN109619376BActive Publication Date: 2022-03-15SHAOGUAN COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAOGUAN COLLEGE
Publication Date
2022-03-15

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Abstract

The invention belongs to the field of rice processing and relates to an improved vacuum precooling treatment method for rice. The method is as follows: before vacuum precooling of the rice, the refrigerating unit (4), the cryogenic liquid circulation pump (5) and the electric valve (13, 14) are turned on earlier, and the auxiliary device group (7) and The temperature of the condenser (18) drops to the set temperature; then, put the cooked rice into the auxiliary device group (7), open the vacuum pump (2) and control the pressure drop rate simultaneously, according to the location of the rice In the temperature section, by adjusting the opening of the electric valve (13, 14) to control the flow of the corresponding branch pipeline I (22), II (23), so as to realize the control of the auxiliary device group (7) and the condenser (18) temperature control. The invention not only enables the rice to obtain a high cooling rate and low water loss, but also maintains a high color quality of the rice, and is simple in operation and low in energy consumption.
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Description

Technical field:

[0001] The invention belongs to the technical field of food processing, and in particular relates to an improved vacuum precooling treatment method for rice. Background technique:

[0002] Vacuum precooling is mainly to cause the evaporation of free water in the material by reducing the pressure of the material environment, and the huge latent heat required for water evaporation comes from the material itself, so that the material can be cooled rapidly. It is not difficult to find that the material has a certain pore structure and free water content is the key to ensure that it can be vacuum precooled. Rice has obvious void structure and high moisture content, which is very suitable for vacuum precooling technology in principle. Related research results also show that compared with air cooling, rice can obtain extremely fast pre-cooling rate under vacuum pre-cooling conditions. On the contrary, although vacuum pre-cooling can obtain a fast pre-cooling rate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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