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A kind of pretreatment method before rice polishing

A pretreatment and rice technology, applied in grain treatment, grain finishing, grain milling, etc., can solve the problems of rice aleurone layer loss, reduction of rice nutritional value, rice loss, etc., to reduce aleurone layer loss, enhance Effect of high resistance and high production efficiency

Active Publication Date: 2020-04-24
安徽省东博米业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main problem in rice processing is that the husk of rice sticks relatively firmly, resulting in a lot of broken rice in the rice milling process, resulting in the loss of rice. At the same time, in the subsequent polishing process, the aleurone layer of rice will be damaged loss, reducing the nutritional value of rice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of pretreatment method before rice polishing processing, concrete steps are as follows:

[0028] 1) Screening and cleaning the harvested rice to obtain primary rice;

[0029] 2) Soak the first-selected rice in 5% saline solution, soak for 20 minutes under 200W ultrasonic wave, then take it out, drain the water and set aside;

[0030] 3) Move the treated rice into a vacuum container, pressurize to 0.2MPa, hold the pressure for 3 minutes, then quickly evacuate to 0.06MPa, hold the pressure for 2 minutes, then increase the pressure to 0.15MPa, hold the pressure for 2 minutes , and then quickly release the pressure to normal pressure;

[0031] 4) Take out the paddy and vacuum-dry it until the water content is 15%, put it into a rice mill for milling after cooling, and make brown rice;

[0032] 5) Grading and sorting the brown rice to remove broken rice and heterochromatic grains exceeding the requirements;

[0033] 6) Move the brown rice to a vacuum container, pre...

Embodiment 2

[0044] A kind of pretreatment method before rice polishing processing, concrete steps are as follows:

[0045] 1) Screening and cleaning the harvested rice to obtain primary rice;

[0046] 2) Soak the first-selected rice in 7% saline solution, soak for 25 minutes under 200W ultrasonic wave, then take it out, drain the water and set aside;

[0047] 3) Move the treated rice into a vacuum container, pressurize to 0.25MPa, hold the pressure for 3 minutes, then quickly evacuate to 0.07MPa, hold the pressure for 2 minutes, then increase the pressure to 0.16MPa, hold the pressure for 2 minutes , and then quickly release the pressure to normal pressure;

[0048] 4) Take out the rice and vacuum-dry it to a moisture content of 17%, and put it into a rice mill for milling after cooling to obtain brown rice;

[0049] 5) Grading and sorting the brown rice to remove broken rice and heterochromatic grains exceeding the requirements;

[0050] 6) Move the brown rice to a vacuum container, p...

Embodiment 3

[0061] A kind of pretreatment method before rice polishing processing, concrete steps are as follows:

[0062] 1) Screening and cleaning the harvested rice to obtain primary rice;

[0063] 2) Soak the first-selected rice in 8% saline solution, soak for 30 minutes under 300W ultrasonic wave, then take it out, drain the water and set aside;

[0064] 3) Move the treated rice into a vacuum container, pressurize to 0.3MPa, hold the pressure for 4 minutes, then quickly evacuate to 0.08MPa, hold the pressure for 3 minutes, then increase the pressure to 0.18MPa, hold the pressure for 3 minutes , and then quickly release the pressure to normal pressure;

[0065] 4) Take out the paddy and vacuum-dry it until the water content reaches 20%, put it into a rice mill after cooling, and grind the rice to obtain brown rice;

[0066] 5) Grading and sorting the brown rice to remove broken rice and heterochromatic grains exceeding the requirements;

[0067] 6) Move the brown rice to a vacuum c...

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Abstract

The invention discloses a pretreatment method before a rice polishing process. The pretreatment method comprises the following specific steps of: 1) carrying out primary selection of harvested rice; 2) soaking the rice; 3) moving the treated rice into a vacuum container for pressure transformation treatment; 4) taking out the rice for vacuum drying, then putting the rice into a rice milling machine for rice milling to obtain brown rice; 5) grading the brown rice to remove broken rice and different colored grains that do not meet the requirements; 6) moving the brown rice into the vacuum container, pressurizing and injecting aleurone layer enhancing atomization liquid for treatment; 7) carrying out vacuum freeze drying of the treated brown rice. The pretreatment method before the rice polishing process has simple steps and high production efficiency, can effectively reduce the broken rice rate of the brown rice and the loss of the aleurone layer in a subsequent polishing step, thereby improving the nutritional value of the rice.

Description

technical field [0001] The invention belongs to the technical field of rice processing, and in particular relates to a pretreatment method before rice polishing. Background technique [0002] Rice is one of the main food crops in my country, with a long history of planting and a large area of ​​planting. Rice is not only a grain, but also a raw material for making wine and caramel. Half of the world's population eats it, mainly in Asia, southern Europe, tropical America and parts of Africa. The total output accounts for the third place in the world's food crop output, lower than corn and wheat, but it can maintain the lives of a large number of people. Rice has high nutritional value, and its main nutrients are: protein, sugar, calcium, phosphorus, iron, glucose, fructose, maltose, vitamin B1, vitamin B2, etc. [0003] At present, the main problem in rice processing is that the rice husk sticks relatively firmly, resulting in a lot of broken rice in the rice milling proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02B3/00B02B1/00B02B1/04B02B1/08B02B7/00
CPCB02B1/00B02B1/04B02B1/08B02B3/00B02B7/00
Inventor 史自顺刘德田
Owner 安徽省东博米业有限公司
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