CN112934309A - Rice production method capable of reducing broken rice rate - Google Patents
Rice production method capable of reducing broken rice rate Download PDFInfo
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- CN112934309A CN112934309A CN201911176635.6A CN201911176635A CN112934309A CN 112934309 A CN112934309 A CN 112934309A CN 201911176635 A CN201911176635 A CN 201911176635A CN 112934309 A CN112934309 A CN 112934309A
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- 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
Abstract
The application aims to disclose a rice production method for reducing broken rice rate, which is characterized by comprising the following steps: primarily cleaning and screening by using a roller and a vibrating screen to remove impurities in the paddy to obtain pretreated paddy; stirring potassium carbonate and water, adding the pretreated paddy under the stirring state, and continuously stirring to obtain alkali-treated paddy; drying the rice subjected to alkali treatment, adding a high-hardness adsorption compound, uniformly mixing, shelling, separating the brown rice from unhulled rice by a rice-husk separator, and increasing automatic classification to realize separation of rice grains and rice husks by utilizing the difference of specific gravity, granularity and surface friction coefficient between the rice grains and the rice husks and the action of a working plate with bidirectional inclination and reciprocating motion; peeling and whitening the rice grains, automatically sorting and removing the heterochromatic particles in the rice grains, and grading the rice grains into rice, medium rice, millet and broken rice by using an automatic sorting machine according to the sizes of the rice grains; and then packaging.
Description
Technical Field
The invention relates to the technical field of food processing, in particular to a production method for reducing broken rice rate of rice.
Background
The rice is one of staple food grains in China, the rice is rich in nutritive value, about 75% of carbohydrate, 7% -8% of protein, 1.3% -1.8% of fat, rich in B vitamins and the like. The carbohydrate in the rice is mainly starch, the protein is mainly glutelin, and secondly gliadin and globulin, the biological value of the protein and the composition ratio of amino acid are higher than that of cereal crops such as wheat, barley, millet, corn and the like, the digestibility is 66.8-83.1%, and the carbohydrate is also one of the cereal proteins. Therefore, the edible rice has higher nutritional value.
At present, the rice processing technology which is commonly used has many defects: when the rice is processed, a special rice cooling bin is not arranged, so that the rice is not stored for a long time and is easy to deteriorate; when the polishing ring is performed, only one-time polishing is usually performed, and because the number of working procedures is large, the original polished rice cannot keep the original smooth finish; during grading and link, grading is usually carried out only once, and broken rice can reappear in the last step of the rice in the subsequent process, so that the grading effect is not ideal; the rice processing is carried out on a production line, and if the previous working procedures are too fast, the problems of untimely packaging and the like can also occur; the series of problems not only can greatly reduce the product quality of the rice, but also can bring certain economic loss to related production enterprises.
Therefore, how to develop a method for producing rice with reduced broken rice rate can solve the above problems, and thus, a technical problem to be solved is needed.
Disclosure of Invention
The invention provides a rice production method for reducing broken rice rate, and aims to provide a production process which is low in production cost, high in efficiency, good in processing effect, capable of promoting quick separation of rice hulls, extremely high in rice hull removal degree, high in impurity removal efficiency, strictly controlling water content of rice, improving the shelling rate, reducing the broken rice rate, improving the quality of rice products and reducing economic risks of related production enterprises, namely a rice production process.
In order to solve the technical problems, the invention discloses a rice production method for reducing broken rice rate, which adopts the following technical scheme:
a method for producing rice with reduced broken rice rate, comprising:
s1, primarily cleaning and screening by using a roller and a vibrating screen to remove impurities in the paddy to obtain pretreated paddy;
s2, stirring potassium carbonate and water, adding the pretreated paddy under the stirring state, and continuously stirring to obtain alkali-treated paddy;
s3, drying the rice treated by the alkali, adding a high-hardness adsorption compound, uniformly mixing, shelling, separating the brown rice from unhulled rice by a rice and husk separator, and increasing automatic classification to realize the separation of the rice and the husk of the rice by utilizing the difference of specific gravity, granularity and surface friction coefficient between the rice and the husk of the rice and the action of a working plate which tilts and reciprocates in two directions;
s4, peeling and whitening the rice grains, automatically sorting and removing the heterochromatic grains in the rice grains, and grading the rice grains into rice, medium rice, millet and broken rice according to the sizes of the rice grains by using an automatic sorting machine;
s5, packaging the rice, the medium rice and the millet respectively.
Further, in S2, the weight ratio of potassium carbonate, water and pretreated rice is 1-4: 80-100: 20-40.
Further, in S2, stirring potassium carbonate and water for 20-40min at 60-66 ℃, adding the pretreated rice under stirring, and continuing stirring for 15-25min at a stirring speed of 120-.
Further, in S3, the weight ratio of the alkali-treated rice to the high-hardness adsorption composite is 60 to 80: 1-2.
Further, in S3, drying the alkali-treated paddy until the water content is 16-18 wt%, adding high-hardness adsorption compound, mixing uniformly, and feeding into a bone huller for hulling, wherein the distance between rubber rollers of the bone huller is 0.8-1.2 mm.
Further, in S3, the high-hardness adsorption composite is prepared by the following process: mixing weathered coal and water, adding concentrated nitric acid under stirring, stirring under boiling state, filtering, washing, drying solid, adding sodium hydroxide solution, stirring, filtering, washing, drying, adding p-aminophenyl trimethoxy silane, sodium lignosulfonate and water, uniformly mixing, adjusting the pH value of the system to 4-5, adjusting the temperature, stirring, filtering, washing, drying and calcining to obtain the high-hardness adsorption composite.
Furthermore, in the preparation process of the high-hardness adsorption compound of S3, the weight ratio of weathered coal, concentrated nitric acid, sodium hydroxide solution, p-aminophenyl trimethoxy silane and sodium lignosulfonate is 4-10: 2-8: 30-50: 2-8: 1-2, and the concentration of the sodium hydroxide solution is 0.8-1.2 mol/L.
According to the rice production method for reducing broken rice rate, weathered coal is acidized and degraded by concentrated nitric acid, is subjected to sodium hydroxide alkalization treatment, has high bonding strength with p-aminophenyl trimethoxy silane, and is calcined, so that the rice production method has extremely high adsorption activity and high hardness.
The invention removes impurities from the paddy, then soaks in potassium carbonate water solution, soaks and stirs at a certain temperature, can promote the separation of the paddy hull, after drying to a certain water content, the paddy is not connected to be agglomerated in the subsequent processing, simultaneously, the nutrition components in the cortex and the rice embryo are further absorbed into the rice in the drying process, and the hulling treatment is carried out by matching with the high-hardness adsorption compound, which not only can promote the rapid separation of the paddy hull, the removal degree of the paddy hull is extremely high, but also the impurities and the water generated in the separation process of the paddy hull can be rapidly adsorbed by the high-hardness adsorption compound, the water content of the paddy is strictly controlled, the hulling rate is improved, the broken rice rate is reduced, the glossiness of the processed rice is ensured, the sense effects of jade pearl and crystal clear can be achieved, the purity of the paddy is ensured, the purity of the produced rice is high, and the quality of the finished rice is improved, the safety and the processing efficiency in the processing process are ensured.
The broken rice rate of the invention is less than or equal to 0.8 percent, the rice yield is more than or equal to 62 percent, the glue consistency is more than or equal to 51.3mm, the maximum impurity is less than or equal to 0.04 percent, the imperfect grains are less than or equal to 0.46 percent, the yellow grain rice is less than or equal to 0.1 percent, and the color and the smell are not abnormal.
The preservation time of the rice can be effectively prolonged, and deterioration is avoided; the rice can still keep the original smooth finish through secondary polishing; through secondary grading, broken rice is prevented from reappearing in the last step of working procedure, and the grading effect is ideal; meanwhile, the problems of untimely packaging and the like are also avoided; improves the product quality of the rice and greatly reduces the economic risk of related production enterprises.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
The first embodiment is as follows:
a method for producing rice with reduced broken rice rate, comprising:
s1, primarily cleaning and screening by using a roller and a vibrating screen to remove impurities in the paddy to obtain pretreated paddy;
s2, stirring potassium carbonate and water, adding the pretreated paddy under the stirring state, and continuously stirring to obtain alkali-treated paddy;
s3, drying the rice treated by the alkali, adding a high-hardness adsorption compound, uniformly mixing, shelling, separating the brown rice from unhulled rice by a rice and husk separator, and increasing automatic classification to realize the separation of the rice and the husk of the rice by utilizing the difference of specific gravity, granularity and surface friction coefficient between the rice and the husk of the rice and the action of a working plate which tilts and reciprocates in two directions;
s4, peeling and whitening the rice grains, automatically sorting and removing the heterochromatic grains in the rice grains, and grading the rice grains into rice, medium rice, millet and broken rice according to the sizes of the rice grains by using an automatic sorting machine;
s5, packaging the rice, the medium rice and the millet respectively.
Further, in S2, the weight ratio of potassium carbonate, water and pretreated rice is 1-4: 80-100: 20-40.
Further, in S2, stirring potassium carbonate and water for 20-40min at 60-66 ℃, adding the pretreated rice under stirring, and continuing stirring for 15-25min at a stirring speed of 120-.
Further, in S3, the weight ratio of the alkali-treated rice to the high-hardness adsorption composite is 60 to 80: 1-2.
Further, in S3, drying the alkali-treated paddy until the water content is 16-18 wt%, adding high-hardness adsorption compound, mixing uniformly, and feeding into a bone huller for hulling, wherein the distance between rubber rollers of the bone huller is 0.8-1.2 mm.
Further, in S3, the high-hardness adsorption composite is prepared by the following process: mixing weathered coal and water, adding concentrated nitric acid under stirring, stirring under boiling state, filtering, washing, drying solid, adding sodium hydroxide solution, stirring, filtering, washing, drying, adding p-aminophenyl trimethoxy silane, sodium lignosulfonate and water, uniformly mixing, adjusting the pH value of the system to 4-5, adjusting the temperature, stirring, filtering, washing, drying and calcining to obtain the high-hardness adsorption composite.
Furthermore, in the preparation process of the high-hardness adsorption compound of S3, the weight ratio of weathered coal, concentrated nitric acid, sodium hydroxide solution, p-aminophenyl trimethoxy silane and sodium lignosulfonate is 4-10: 2-8: 30-50: 2-8: 1-2, and the concentration of the sodium hydroxide solution is 0.8-1.2 mol/L.
Example two:
a production method for reducing broken rice rate of rice comprises the following steps:
s1, harvesting the paddy, and removing impurities by adopting a roller primary cleaning sieve and a vibrating sieve to obtain pretreated paddy;
s2, stirring 2kg of potassium carbonate and 95kg of water for 25min at the stirring temperature of 64 ℃, adding 25kg of pretreated paddy under the stirring state, and continuing stirring for 22min at the stirring speed of 140r/min to obtain alkali-treated paddy;
s3, drying 75kg of rice treated by alkali until the water content is 16.5 wt%, adding 1.7kg of high-hardness adsorption compound, uniformly mixing, conveying into a bone huller for hulling, separating the brown rice from unhulled rice by a rice huller with the spacing of rubber rollers of the bone huller being 0.8-1.2mm, and then husking, whitening and polishing.
The high-hardness adsorption compound is prepared by adopting the following process: mixing 6kg of weathered coal and 45kg of water, adding 4kg of concentrated nitric acid under stirring, stirring for 3.5min under boiling, filtering, washing, drying the solid, adding 35kg of sodium hydroxide solution with the concentration of 1.1mol/L, stirring for 38min, filtering, washing, drying, adding 6kg of p-aminophenyl trimethoxy silane, 1.3kg of sodium lignosulfonate and 56kg of water, uniformly mixing, adjusting the pH value of a system to be 4-5 by using 1.2mol/L of hydrochloric acid, adjusting the temperature to 7 ℃, stirring for 5h, filtering, washing, drying, and calcining for 6min at 880 ℃ to obtain the high-hardness adsorption compound.
Example three:
a production method for reducing broken rice rate of rice comprises the following steps:
s1, harvesting the paddy, and removing impurities by adopting a roller primary cleaning sieve and a vibrating sieve to obtain pretreated paddy;
s2, stirring 2.5kg of potassium carbonate and 90kg of water for 30min at the stirring temperature of 63 ℃, adding 30kg of pretreated paddy under the stirring state, and continuing stirring for 20min at the stirring speed of 160r/min to obtain alkali-treated paddy;
s3, drying 70kg of the rice subjected to alkali treatment until the water content is 17 wt%, adding 1.5kg of high-hardness adsorption compound, uniformly mixing, conveying to a bone huller for hulling treatment, separating the brown rice from unhulled rice by a brown rice separator, and then husking, whitening and polishing, wherein the spacing between rubber rollers of the bone huller is 0.8-1.2 mm.
The high-hardness adsorption compound is prepared by adopting the following process: mixing 7kg of weathered coal and 40kg of water, adding 5kg of concentrated nitric acid under stirring, stirring for 3min under boiling, filtering, washing, drying the solid, adding 40kg of sodium hydroxide solution with the concentration of 1mol/L, stirring for 40min, filtering, washing, drying, adding 5kg of p-aminophenyl trimethoxy silane, 1.5kg of sodium lignosulfonate and 55kg of water, uniformly mixing, adjusting the pH value of the system to be 4-5 by using 1.5mol/L of hydrochloric acid, adjusting the temperature to 6 ℃, stirring for 6h, filtering, washing, drying, and calcining for 8min at 850 ℃ to obtain the high-hardness adsorption compound.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (7)
1. A method for producing rice with reduced broken rice rate, comprising:
s1, primarily cleaning and screening by using a roller and a vibrating screen to remove impurities in the paddy to obtain pretreated paddy;
s2, stirring potassium carbonate and water, adding the pretreated paddy under the stirring state, and continuously stirring to obtain alkali-treated paddy;
s3, drying the rice treated by the alkali, adding a high-hardness adsorption compound, uniformly mixing, shelling, separating the brown rice from unhulled rice by a rice and husk separator, and increasing automatic classification to realize the separation of the rice and the husk of the rice by utilizing the difference of specific gravity, granularity and surface friction coefficient between the rice and the husk of the rice and the action of a working plate which tilts and reciprocates in two directions;
s4, peeling and whitening the rice grains, automatically sorting and removing the heterochromatic grains in the rice grains, and grading the rice grains into rice, medium rice, millet and broken rice according to the sizes of the rice grains by using an automatic sorting machine;
s5, packaging the rice, the medium rice and the millet respectively.
2. The method for producing rice with reduced broken rice rate as claimed in claim 1, wherein in S2, the weight ratio of potassium carbonate, water and pre-treated rice is 1-4: 80-100: 20-40.
3. The method for producing rice with reduced broken rice rate as claimed in claim 2, wherein in S2, the potassium carbonate and water are stirred for 20-40min at 60-66 ℃, the pretreated rice is added under stirring, and the stirring is continued for 15-25min at a stirring speed of 120-200r/min, thereby obtaining the alkali-treated rice.
4. The method for producing rice with reduced broken rice rate as claimed in claim 3, wherein the weight ratio of the alkali-treated rice to the high-hardness adsorbent composite in S3 is 60 to 80: 1-2.
5. The method for producing rice with reduced rice breakage rate as claimed in claim 4, wherein in S3, the alkali-treated rice is dried to a water content of 16-18 wt%, and then added with a high-hardness adsorption compound to be mixed uniformly, and then the mixture is sent to a bone huller for hulling treatment, wherein the pitch between rubber rollers of the bone huller is 0.8-1.2 mm.
6. The method for producing rice with reduced broken rice rate as claimed in claim 5, wherein the high-hardness adsorption complex is prepared by the following process in S3: mixing weathered coal and water, adding concentrated nitric acid under stirring, stirring under boiling state, filtering, washing, drying solid, adding sodium hydroxide solution, stirring, filtering, washing, drying, adding p-aminophenyl trimethoxy silane, sodium lignosulfonate and water, uniformly mixing, adjusting the pH value of the system to 4-5, adjusting the temperature, stirring, filtering, washing, drying and calcining to obtain the high-hardness adsorption composite.
7. The method for producing rice with reduced broken rice rate as claimed in claim 6, wherein in the preparation process of the high-hardness adsorption composite of S3, the weight ratio of weathered coal, concentrated nitric acid, sodium hydroxide solution, p-aminophenyl trimethoxy silane and sodium lignosulfonate is 4-10: 2-8: 30-50: 2-8: 1-2, and the concentration of the sodium hydroxide solution is 0.8-1.2 mol/L.
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| CN109174261A (en) * | 2018-08-30 | 2019-01-11 | 怀宁县佳禾米业有限公司 | A kind of processing method reducing broken rice rate |
| CN109759174A (en) * | 2018-11-23 | 2019-05-17 | 颍上县迪沟米业有限公司 | A kind of glutinous rice decontamination method |
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2019
- 2019-11-26 CN CN201911176635.6A patent/CN112934309A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008000085A1 (en) * | 2006-06-30 | 2008-01-03 | The University Of Western Ontario | Process for producing a concrete additive from an agricultural residue |
| CN103691508A (en) * | 2013-12-12 | 2014-04-02 | 聂俊 | Rice machining process |
| CN105013553A (en) * | 2014-04-23 | 2015-11-04 | 贵州省施秉县黔香米业有限公司 | Method for processing and purifying rice |
| CN104668021A (en) * | 2015-03-10 | 2015-06-03 | 安徽天利粮油集团股份有限公司 | Rice screening method |
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Application publication date: 20210611 |