CN112892646A - Rice processing method - Google Patents
Rice processing method Download PDFInfo
- Publication number
- CN112892646A CN112892646A CN201911130840.9A CN201911130840A CN112892646A CN 112892646 A CN112892646 A CN 112892646A CN 201911130840 A CN201911130840 A CN 201911130840A CN 112892646 A CN112892646 A CN 112892646A
- Authority
- CN
- China
- Prior art keywords
- rice
- impurities
- processing method
- polishing
- hulling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B5/00—Grain treatment not otherwise provided for
- B02B5/02—Combined processes
Landscapes
- Cereal-Derived Products (AREA)
- Adjustment And Processing Of Grains (AREA)
Abstract
The invention relates to a rice processing method, which sequentially comprises the following steps: (1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice; (2) removing large impurities; (3) removing stones by magnetic separation; (4) soaking in alkaline water: soaking the rice with impurities removed in an edible alkali aqueous solution; (5) drying: drying the soaked rice until the water content of the rice is 12-14%; (6) hulling rice; (7) separating the rough rice; (8) whitening; (9) polishing; (10) selecting and grading; (11) sterilizing and packaging. The method does not need to dry the fresh rice in the sun at first and is directly used for processing the rice, thereby not only improving the processing efficiency, but also leading the nutrition retention rate of the rice to be high and the broken rice processing rate to be low through scientific process conditions. The processing method is simple and easy to popularize.
Description
Technical Field
The invention relates to the field of grain processing, in particular to a processing method of rice.
Background
The rice is the first large food variety in China, and rice is used as staple food in many areas of China. Rice and its products have a wide range of consumption targets, huge development potential and a broad market. At present, the rice is firstly aired, harvested rice is difficult to be directly processed and manufactured, so that the production efficiency is low, new impurities can be brought in the airing process, and a large amount of places, storage spaces and logistics can be occupied by airing.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for processing rice by taking fresh unhusked rice as a raw material, and the method is directly used for processing rice without drying the fresh unhusked rice in the sun, so that the processing efficiency is improved, and the rice has high nutrition retention rate and low broken rice processing rate through scientific process conditions. The processing method is simple and easy to popularize.
The invention aims to provide a rice processing method, which sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: soaking the rice with impurities removed in an edible alkali aqueous solution;
(5) drying: drying the soaked rice until the water content of the rice is 12-14%;
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the husked brown rice into a rice mill for whitening;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the polished rice is controlled to be 2-8 ℃;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing the rice, and then quantitatively vacuum packaging and warehousing for storage.
Preferably, the edible alkali aqueous solution in the step (4) has the mass concentration of 3-8%, the soaking time is 0.5-1.5h, and the soaking temperature is 35-50 ℃.
Most preferably, the edible alkali aqueous solution in the step (4) has the mass concentration of 5 percent, the soaking time of 1h and the soaking temperature of 40 ℃.
Preferably, the step (5) is carried out by drying with a dryer until the water content of the rice is 13%.
Preferably, the number of whitening in the step (8) is 2 to 3.
Preferably, the temperature of the rice is 5-7 ℃ at the time of polishing in the step (9).
According to the invention, the rice is processed by taking the fresh rice as the raw material, and the airing link of the traditional rice processing is omitted, so that the processing efficiency is improved, the expenses of airing a field storage warehouse and the like are saved, and the increase of impurities caused by the airing link is reduced. The rice without impurities is soaked in the aqueous solution of edible alkali, and proper temperature and time are selected, so that a great amount of nutrient components in the cortex and the rice embryo are soaked into the rice, the loss of the nutrient components of the rice caused by fine processing is ensured, and the processed rice is plump and glittering and translucent in appearance. The invention can reduce the generation of broken rice by scientifically controlling the water content before rice hulling. In addition, the invention adopts low-temperature polishing, and can greatly reduce the broken rice rate by selecting proper temperature. Through the synergistic effect of the scientific process conditions, the processed rice has high nutrition retention rate and low broken rice processing rate. The processing method is simple and easy to popularize.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
The rice processing method of the embodiment sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: preparing an aqueous solution of edible alkali with the mass concentration of 5%, and soaking the rice with impurities removed in the aqueous solution at the soaking temperature of 40 ℃ for 1 h;
(5) drying: and (3) drying the soaked rice by a hot air dryer until the water content of the rice is 13% (weight percentage).
(6) Hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 2 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the rice is controlled to be 5-7 ℃ by an air cooler during polishing;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Example 2
The rice processing method of the embodiment sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: preparing an aqueous solution of edible alkali with the mass concentration of 3%, and soaking the rice with impurities removed in the aqueous solution at the soaking temperature of 40 ℃ for 0.5 h;
(5) drying: drying the soaked rice by a hot air dryer until the water content of the rice is 14% (weight percentage);
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 3 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, and controlling the temperature of the rice to be 5 ℃ through air-conditioning refrigeration during polishing;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Example 3
The rice processing method of the embodiment sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: preparing an edible alkali aqueous solution with the mass concentration of 8%, and soaking the rice with impurities removed in the aqueous solution at the soaking temperature of 50 ℃ for 0.5 h;
(5) drying: drying the soaked rice by a hot air dryer until the water content of the rice is 12% (weight percentage);
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 2 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the rice is controlled to be 5-7 ℃ by an air cooler during polishing;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Example 4
The rice processing method of the embodiment sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: preparing an edible alkali aqueous solution with the mass concentration of 8%, and soaking the rice with impurities removed in the aqueous solution at the soaking temperature of 45 ℃ for 0.8 h;
(5) drying: drying the soaked rice by a hot air dryer until the water content of the rice is 14% (weight percentage);
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 3 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the rice is controlled to be 5-7 ℃ by an air cooler during polishing;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Example 5
The rice processing method of the embodiment sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: preparing an aqueous solution of edible alkali with the mass concentration of 6%, and soaking the rice with impurities removed in the aqueous solution at the temperature of 40 ℃ for 0.6 h;
(5) drying: drying the soaked rice by a hot air dryer until the water content of the rice is 14% (weight percentage);
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 2 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the rice is controlled to be 7 ℃ by an air cooler during polishing;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Comparative example 1
The rice processing method of the comparative example sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) hulling rice and husking: carrying out rice hulling treatment on rice;
(5) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(6) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 2 times;
(7) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature is 28 ℃ during polishing;
(8) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(9) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Comparative example 2
The rice processing method of the embodiment sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: preparing an aqueous solution of edible alkali with the mass concentration of 5%, and soaking the rice with impurities removed in the aqueous solution at the soaking temperature of 40 ℃ for 1 h;
(5) drying: drying the soaked rice by a hot air dryer until the water content of the rice is 13% (weight percentage);
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 2 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the polished rice is controlled to be 28 ℃;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
Comparative example 3
The rice processing method of the comparative example sequentially comprises the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(6) hulling rice and husking: carrying out hulling treatment on the dried rice;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the hulled brown rice into a rice mill to be milled for 2 times;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the rice is controlled to be 7 ℃ by an air cooler during polishing;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing rice with ultraviolet rays, quantitatively vacuum filling nitrogen, packaging, and warehousing for storage.
All experimental samples were subjected to the relevant performance tests, and the results are summarized in table 1 below:
TABLE 1
Claims (6)
1. A rice processing method is characterized by sequentially comprising the following steps:
(1) removing light impurities: removing weeds, leaves and dust from the newly harvested rice;
(2) removing big impurities: then removing large impurities through a rice screening machine;
(3) magnetic separation stone removal: then removing small impurities, broken stones and metals by a stone remover;
(4) soaking in alkaline water: soaking the rice with impurities removed in an edible alkali aqueous solution;
(5) drying: drying the soaked rice until the water content of the rice is 12-14%;
(6) hulling rice and husking: cooling the dried paddy and then carrying out hulling treatment;
(7) separating the rough rice: sending the hulled brown rice into a brown rice separator for separating brown rice, screening unhulled rice, and sending the unhulled rice into a rice huller for hulling again;
(8) and (3) whitening: sending the husked brown rice into a rice mill for whitening;
(9) polishing: conveying the polished rice to a polishing machine for polishing, wherein the temperature of the polished rice is controlled to be 2-8 ℃;
(10) color selection and grading: carrying out color selection and grading on rice, and removing broken rice;
(11) and (3) sterilization and packaging: sterilizing the rice, and then quantitatively vacuum packaging and warehousing for storage.
2. The rice processing method according to claim 1, wherein the edible alkali aqueous solution of step (4) contains alkali at a mass concentration of 3-8%, and is soaked for 0.5-1.5h at a temperature of 35-50 ℃.
3. The rice processing method according to claim 2, wherein the edible alkali aqueous solution of the step (4) has an alkali concentration of 5% by mass, and is soaked for 1 hour at a temperature of 40 ℃.
4. The rice processing method according to claim 1, wherein the step (5) of drying is performed by using a dryer until the moisture content of the rice is 13%.
5. A rice processing method as claimed in claim 1, wherein the number of whitening in said step (8) is 2-3.
6. A rice processing method as claimed in claim 1, wherein the temperature of the rice at the time of polishing in said step (9) is 5-7 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130840.9A CN112892646A (en) | 2019-11-19 | 2019-11-19 | Rice processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130840.9A CN112892646A (en) | 2019-11-19 | 2019-11-19 | Rice processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112892646A true CN112892646A (en) | 2021-06-04 |
Family
ID=76103086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911130840.9A Pending CN112892646A (en) | 2019-11-19 | 2019-11-19 | Rice processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112892646A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114130450A (en) * | 2021-11-25 | 2022-03-04 | 湖南益芝通生物科技有限公司 | Low-arsenic rice and preparation method thereof |
| CN115532344A (en) * | 2022-10-08 | 2022-12-30 | 五常葵花阳光米业有限公司 | Processing method of Wuchang rice |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028328A (en) * | 2014-06-12 | 2014-09-10 | 贵州凤冈县神农米业有限公司 | Processing method allowing lower broken rice rate |
| CN106391168A (en) * | 2016-06-14 | 2017-02-15 | 金健粮食（益阳）有限公司 | Rice fine processing technology |
| CN108579851A (en) * | 2017-12-28 | 2018-09-28 | 姚明武 | A kind of rice fine-processing technique |
| CN109225394A (en) * | 2018-09-28 | 2019-01-18 | 安徽省全椒县龚记米业有限公司 | A kind of big rice processing method |
-
2019
- 2019-11-19 CN CN201911130840.9A patent/CN112892646A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028328A (en) * | 2014-06-12 | 2014-09-10 | 贵州凤冈县神农米业有限公司 | Processing method allowing lower broken rice rate |
| CN106391168A (en) * | 2016-06-14 | 2017-02-15 | 金健粮食（益阳）有限公司 | Rice fine processing technology |
| CN108579851A (en) * | 2017-12-28 | 2018-09-28 | 姚明武 | A kind of rice fine-processing technique |
| CN109225394A (en) * | 2018-09-28 | 2019-01-18 | 安徽省全椒县龚记米业有限公司 | A kind of big rice processing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114130450A (en) * | 2021-11-25 | 2022-03-04 | 湖南益芝通生物科技有限公司 | Low-arsenic rice and preparation method thereof |
| CN115532344A (en) * | 2022-10-08 | 2022-12-30 | 五常葵花阳光米业有限公司 | Processing method of Wuchang rice |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104028329B (en) | A kind of processing method of nutrient rice | |
| CN109550546B (en) | Processing technological process of organic rice | |
| CN109550545B (en) | Rice fine processing technology | |
| CN104815714A (en) | Refined rice processing method | |
| CN104668021A (en) | Rice screening method | |
| CN104028327A (en) | Rice processing method | |
| CN106391168A (en) | Rice fine processing technology | |
| CN104624282A (en) | Processing method for nutritional rice | |
| CN104923332A (en) | Green fine processing method for rice | |
| CN112892646A (en) | Rice processing method | |
| CN105478183A (en) | Processing technology of high-quality rice | |
| CN111644221A (en) | Production process of high-quality germ rice | |
| CN112934312A (en) | Process method for reducing broken rice based on rice processing impurity removal | |
| CN110786449A (en) | Processing method of nutritional rice | |
| CN108906170B (en) | Rice processing method | |
| CN111363618A (en) | Pretreatment method of camellia oleifera fruits | |
| CN109043064A (en) | A kind of coffee bean effectively improving quality of coffee and its processing technology | |
| CN105768029B (en) | New method for processing white pepper | |
| CN108786965B (en) | Polished rice processing method capable of reducing broken rice rate | |
| CN112121879A (en) | Processing and production process of nutritional rice | |
| CN112108205A (en) | Quinoa rice processing method | |
| CN107042133A (en) | A kind of rice processing technique | |
| CN220494171U (en) | Processing system of light board pumpkin seed benevolence | |
| CN112206851B (en) | Fine processing method of rice | |
| CN112892647A (en) | Processing method of nutritional rice |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |