CN103357457A - Method for producing milled rice with embryo - Google Patents
Method for producing milled rice with embryo Download PDFInfo
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- CN103357457A CN103357457A CN2013103083675A CN201310308367A CN103357457A CN 103357457 A CN103357457 A CN 103357457A CN 2013103083675 A CN2013103083675 A CN 2013103083675A CN 201310308367 A CN201310308367 A CN 201310308367A CN 103357457 A CN103357457 A CN 103357457A
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Abstract
The invention discloses a method for producing milled rice with embryo. The method comprises the steps of A, selecting rice; B, screening the rice; C, hulling the rice and separating the husked rice; D, drying the rice; E, milling the rice for multiple times; F, primarily polishing the rice; G, secondarily polishing the rice; H, carrying out the color sorting; and I, measuring and packaging the rice. Due to the adoption of the method, the defects of the prior art can be solved, and the retention rate of the embryo can be further increased on the basis of not changing the quality of the rice.
Description
Technical field
The present invention relates to the rice germ preparing technical field, especially a kind of production method of rice germ.
Background technology
Rice germ is again rice with remained germ, refer to the plumule retention rate more than 80%, and meet the polished rice of rice classification standard, general rice is comprised of cortex, endosperm, plumule three parts, wherein endosperm accounts for the overwhelming majority, plumule is positioned at rice belly lower end, is connected not bery closely with endosperm, is easy to come off when husk rice, therefore, the key of producing rice with remained germ is how to take into account rate of kernels with remained germ and precision in the rice milling process, and this not only relates to special equipment, and is also directly related with pearling technique.Existing theory is preferably 13%～14% to the moisture content in the rice germ husk rice operation process, and the rice milling roller rotating speed is preferably below the 1000r/min.This setting parameter can guarantee that the plumule retention rate is 80%～85%.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of production method of rice germ, can solve the deficiencies in the prior art, on the basis that does not change grain of rice quality, has further improved the plumule retention rate.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
A kind of production method of rice germ is characterized in that step is as follows:
A, choosing rice
The grain of rice axial-radial ratio≤3:1 that chooses;
B, screening
Remove other impurity that is mixed with in the grain of rice;
C, rice huller paddy, the rough separation of paddy
The husking yield of rice huller behind the paddy 〉=95% contains husk rate≤0.2% after the rough separation of paddy;
D, drying
The moisture content of the grain of rice is dried to 8%～10%;
E, repeatedly husk rice
Use vertical stone roller to cut the formula rice mill, the grain of rice is carried out repeatedly husk rice; The rice milling roller rotating speed is controlled at 1200r/min～1600r/min, and husk rice pressure is controlled at 60kPa～80kPa;
F, for the first time polishing
It is moistening to use atomizer water to grain of rice surface, carries out the polishing first time;
G, for the second time polishing
To quickly heat up to 55 ℃～65 ℃ through the grain of rice skin of for the first time polishing, carry out the polishing second time;
H, look choosing
Use NI Vision Builder for Automated Inspection to carry out selected according to grain of rice colourity to the grain of rice;
I, metering packing
The grain of rice after selected is carried out weighing, and quantitative package.
As a kind of optimal technical scheme of the present invention, in the step e, carry out 3 husk rices.
As a kind of optimal technical scheme of the present invention, in the step e, the process of 3 husk rices is as follows:
E-1, for the first time husk rice
The length of rice milling roller is 200mm, and husk rice muscle angle of inclination is 3 °, and rice milling roller surface granularity is 30#, and the husk rice rotating speed is 1200r/min, and husk rice pressure is 80kPa, and the whitening chamber gap is 9mm, and the husk rice temperature is 40 ℃;
E-2, for the second time husk rice
The length of rice milling roller is 140mm, and husk rice muscle angle of inclination is 2 °, and rice milling roller surface granularity is 50#, and the rice milling roller rotating speed is 1400r/min, and husk rice pressure is 70kPa, and the whitening chamber gap is 9.5mm, and the husk rice temperature is 35 ℃;
E-3, for the third time husk rice
The length of rice milling roller is 100mm, and husk rice muscle angle of inclination is 1 °, and rice milling roller surface granularity is 70#, and the rice milling roller rotating speed is 1600r/min, and husk rice pressure is 60kPa, and the whitening chamber gap is 10.0mm, and the husk rice temperature is 25 ℃.
As a kind of optimal technical scheme of the present invention, in the step e, the screen cloth that vertical stone roller is cut the formula rice mill has 1.5 ° angle of inclination.
The beneficial effect that adopts technique scheme to bring is: the rice kernel shape of axial-radial ratio≤3:1 is short and thick, and the contact area in rice mill is little, can reduce percentage of damage.Higher husking yield and lower contain the husk rate and can reduce husk destruction to the grain of rice in rice milling process.By reducing the moisture content of rice germ, and suitably improve husk rice speed and pressure, by three husk rices, can under the prerequisite that guarantees the rice germ quality, the plumule retention rate be brought up to more than 95%.
The specific embodiment
A kind of production method of rice germ is characterized in that step is as follows:
A, choosing rice
The grain of rice axial-radial ratio≤3:1 that chooses;
B, screening
Remove other impurity that is mixed with in the grain of rice;
C, rice huller paddy, the rough separation of paddy
The husking yield of rice huller behind the paddy 〉=95% contains husk rate≤0.2% after the rough separation of paddy;
D, drying
The moisture content of the grain of rice is dried to 9%;
E, three husk rices
Use vertical stone roller to cut the formula rice mill, the grain of rice is carried out three husk rices, screen cloth has 1.5 ° angle of inclination, adopts the mode of movement of charging end opening suitable for reading discharging, and the rice germ input amount remains on every rice mill 25kg/h.
For the first time husk rice
The length of rice milling roller is 200mm, and husk rice muscle angle of inclination is 3 °, and rice milling roller surface granularity is 30#, and the husk rice rotating speed is 1200r/min, and husk rice pressure is 80kPa, and the whitening chamber gap is 9mm, and the husk rice temperature is 40 ℃;
For the second time husk rice
The length of rice milling roller is 140mm, and husk rice muscle angle of inclination is 2 °, and rice milling roller surface granularity is 50#, and the rice milling roller rotating speed is 1400r/min, and husk rice pressure is 70kPa, and the whitening chamber gap is 9.5mm, and the husk rice temperature is 35 ℃;
For the third time husk rice
The length of rice milling roller is 100mm, and husk rice muscle angle of inclination is 1 °, and rice milling roller surface granularity is 70#, and the rice milling roller rotating speed is 1600r/min, and husk rice pressure is 60kPa, and the whitening chamber gap is 10.0mm, and the husk rice temperature is 25 ℃.
F, for the first time polishing
It is moistening to use atomizer water to grain of rice surface, carries out the polishing first time; Mainly remove the chaff powder on grain of rice surface.
G, for the second time polishing
To quickly heat up to 55 ℃～65 ℃ through the grain of rice skin of for the first time polishing, carry out the polishing second time; With grain of rice surface gelatinization, improve polishing effect by high temperature.
H, look choosing
Use the CV-5000 high speed machines vision system of Keyemce company, carry out selected according to grain of rice colourity to the grain of rice;
I, metering packing
The grain of rice after selected is carried out weighing, and quantitative package.
The below specifies principle and the technic index of present embodiment with each group experimental data.
Because the grain of rice of present rice germ processing normal operation high-moisture cooperates the rice mill of the slow-speed of revolution, low-pressure to carry out husk rice, although the plumule retention rate can guarantee can't further improve more than 80%.Find through overtesting, suitably reduce the moisture content of the grain of rice and improve rotating speed and the husk rice pressure of rice mill, can increase the hardness of grain of rice shell and the bond strength of plumule, so that the grain of rice can bear quick high strength husk rice.Owing to shortened the time of husk rice and the number of times of husk rice, so increase substantially the plumule retention rate, the correction data of single husk rice sees the following form.
Table suitably reduces grain of rice moisture content as can be known thus, improves the rice mill rotating speed, can reduce the plumule percentage of damage.
Require under other prerequisite of one-level up to standard in husk rice, the length of rice milling roller is shorter, and the husk rice number of times that needs is more, and the plumule retention rate is also just lower.Do not have more beneficial effect but rice milling roller length is long yet, also can increase the input cost of equipment.By following test data the length of rice milling roller is carried out preferably.
| Rice milling roller length (mm) | The husk rice number of times (inferior) that needs |
| 50 | 8 |
| 100 | 4 |
| 200 | 3 |
| 250 | 3 |
In rice milling process, temperature also has certain influence to the grain of rice.Find through overtesting, suitably heat and to soften the entry material of the grain of rice, to reach the effect that reduces the husk rice number of times.But too high temperature can cause grain of rice slaking, affects the quality of the grain of rice, is lower than 40 ℃ so will guarantee the husk rice temperature, and it is long-time that high temperature should not keep, by the husk rice first time with entry material is softening remove after, processings of can lowering the temperature, the degree of minimizing grain of rice slaking.
The whitening chamber gap is too small, and the extruding force between the grain of rice is excessive, and the grain of rice is broken easily; The whitening chamber excesssive gap, the impact force between the grain of rice is excessive, also produces easily broken.By the experimental result of following table, can optimize the scope in gap, husk rice chamber.
| Gap, husk rice chamber (mm) | Percentage of damage (%) |
| 6 | 15 |
| 9 | 9 |
| 10 | 8.3 |
| 14 | 16 |
In addition, during owing to for the first time husk rice, need to process the harder entry material of grain of rice surface ratio, so need less gap, husk rice chamber produce larger extruding force, along with the removal of entry material, can suitably increase gap, husk rice chamber.
Husk rice muscle angle of inclination is used for controlling the holdup time of the grain of rice in whitening chamber.Time is longer, and the extrusion and collision effect is more obvious.By alleged cause in the preceding paragraph as can be known, in order to remove entry material, need the long holdup time.By the experimental result of following table, can optimize the scope at husk rice muscle angle of inclination.
| Husk rice muscle angle of inclination (degree) | Percentage of damage (%) |
| 0.5 | 3.1 |
| 1 | 4.6 |
| 3 | 5.3 |
| 5 | 15 |
The granularity of rice milling roller also is one of factor that affects husk rice effect and plumule retention rate.Granularity is higher, and the husk rice effect is poorer, but the plumule retention rate is higher.The initial stage of husk rice can be used the lower rice milling roller of granularity.The concrete experimental result by following table draws.
| The rice milling roller granularity | Percentage of damage (%) |
| 10# | 5 |
| 30# | 5.4 |
| 70# | 6.1 |
| 90# | 9.9 |
Be to have 1.5 ° angle of inclination with screen designs, can improve the expansion flatness of the grain of rice in rice mill, avoid occurring the inhomogeneous situation of husk rice.
Rice mill in the present embodiment adopts vertical stone roller to cut the formula rice mill, and the sand sword by sand roller surface acts on grain of rice surface, reaches the purpose of removing grain of rice cortex, and the husk rice room pressure is little, so collision, rolling all relax, is conducive to keep plumule.The production capacity of the rice mill in the present embodiment is about 30kg/h, and input amount is not used the production capacity of producing at full capacity, and can strengthen like this space between the grain of rice, reduces percentage of damage.Through cost accounting, use about 80% production capacity can realize maximum economic benefit.
Through the method for using present embodiment rice germ is processed, through three tests, final plumule retention rate sees the following form.
| Test | The plumule retention rate |
| For the first time | 96.7% |
| For the second time | 97.1% |
| For the third time | 96.9% |
The production method of rice germ provided by the invention, its physical and chemical index is carried out the relevant criterion of GB1354-1986 " rice "; Sanitary index is carried out GB2715-2005 " grain sanitary standard ", fatty acid value :≤20mg KOH/l00g; Raw grain select to meet GB/T1789-1999 " high quality paddy " second-class above, when the paddy of producing per year as entering the machine raw material, having ready conditions and selecting green rice, organic rice is raw material; Packing high density polyethylene (HDPE) bag, vacuumize packing, or in-builtly pack from the Polythene Bag of locking device with band, overcoat common polythene double casing, packing can guarantee that the shelf-life of product under normal temperature condition is not less than 3 months; Hygienic requirements in the processing process: the rice with remained germ production process should meet the regulation of GB 14881-1994, and raw material should meet the requirement of GB 1350-1999, GB/T 17891-1999 and GB/T 18810-2002.In the rice with remained germ production process, except the water that meets GB 5749-2006 requirements, do not add any material.
Foregoing description only proposes as the enforceable technical scheme of the present invention, not as the Single restriction condition to its technical scheme itself.
Claims (4)
1. the production method of a rice germ is characterized in that step is as follows:
A, choosing rice
The grain of rice axial-radial ratio≤3:1 that chooses;
B, screening
Remove other impurity that is mixed with in the grain of rice;
C, rice huller paddy, the rough separation of paddy
The husking yield of rice huller behind the paddy 〉=95% contains husk rate≤0.2% after the rough separation of paddy;
D, drying
The moisture content of the grain of rice is dried to 8%～10%;
E, repeatedly husk rice
Use vertical stone roller to cut the formula rice mill, the grain of rice is carried out repeatedly husk rice; The rice milling roller rotating speed is controlled at 1200r/min～1600r/min, and husk rice pressure is controlled at 60kPa～80kPa;
F, for the first time polishing
It is moistening to use atomizer water to grain of rice surface, carries out the polishing first time;
G, for the second time polishing
To quickly heat up to 55 ℃～65 ℃ through the grain of rice skin of for the first time polishing, carry out the polishing second time;
H, look choosing
Use NI Vision Builder for Automated Inspection to carry out selected according to grain of rice colourity to the grain of rice;
I, metering packing
The grain of rice after selected is carried out weighing, and quantitative package.
2. the production method of rice germ according to claim 1 is characterized in that: in the step e, carry out 3 husk rices.
3. the production method of rice germ according to claim 2, it is characterized in that: in the step e, the process of 3 husk rices is as follows:
E-1, for the first time husk rice
The length of rice milling roller is 200mm, and husk rice muscle angle of inclination is 3 °, and rice milling roller surface granularity is 30#, and the husk rice rotating speed is 1200r/min, and husk rice pressure is 80kPa, and the whitening chamber gap is 9mm, and the husk rice temperature is 40 ℃;
E-2, for the second time husk rice
The length of rice milling roller is 140mm, and husk rice muscle angle of inclination is 2 °, and rice milling roller surface granularity is 50#, and the rice milling roller rotating speed is 1400r/min, and husk rice pressure is 70kPa, and the whitening chamber gap is 9.5mm, and the husk rice temperature is 35 ℃;
E-3, for the third time husk rice
The length of rice milling roller is 100mm, and husk rice muscle angle of inclination is 1 °, and rice milling roller surface granularity is 70#, and the rice milling roller rotating speed is 1600r/min, and husk rice pressure is 60kPa, and the whitening chamber gap is 10.0mm, and the husk rice temperature is 25 ℃.
4. the production method of the described rice germ of any one according to claim 1～3 is characterized in that: in the step e, the screen cloth that vertical stone roller is cut the formula rice mill has 1.5 ° angle of inclination.
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|---|---|---|---|
| CN201310308367.5A CN103357457B (en) | 2013-07-22 | 2013-07-22 | Method for producing milled rice with embryo |
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| CN103357457B CN103357457B (en) | 2015-03-25 |
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Cited By (16)
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| CN103623889A (en) * | 2013-12-02 | 2014-03-12 | 湖北佳萌粮油有限公司 | Processing method for refined rice |
| CN103657769A (en) * | 2013-11-28 | 2014-03-26 | 邱珍君 | Method for processing health care milled rice with embryo |
| CN104826685A (en) * | 2015-04-29 | 2015-08-12 | 苏州科谷米业有限公司 | Preparation method for storable black rice |
| CN104826686A (en) * | 2015-04-29 | 2015-08-12 | 苏州科谷米业有限公司 | Preparation method for storable rice |
| CN105817282A (en) * | 2015-01-09 | 2016-08-03 | 陈文彬 | Fine brown rice and processing method thereof |
| CN107042133A (en) * | 2017-05-05 | 2017-08-15 | 东至县鸿棉工贸有限责任公司 | A kind of rice processing technique |
| CN107051621A (en) * | 2017-05-05 | 2017-08-18 | 刘景芳 | A kind of processing method of rice germ |
| CN107552124A (en) * | 2017-09-21 | 2018-01-09 | 中国农业大学 | A kind of more qualities are fresh to grind rice automatic processing system and method |
| CN108450791A (en) * | 2018-01-09 | 2018-08-28 | 张伟强 | A kind of manufacture craft of full nutrition rice germ |
| CN108940409A (en) * | 2017-05-18 | 2018-12-07 | 句容靖昌生态农业有限公司 | A kind of purification rice production technique |
| CN109105730A (en) * | 2018-07-23 | 2019-01-01 | 深圳威琳懋生物科技有限公司 | The manufacturing method and selenium-rich rice germ of selenium-rich rice germ |
| CN110354936A (en) * | 2019-07-01 | 2019-10-22 | 江苏鼎丰生态农业发展有限公司 | A kind of production equipment and processing method of baby's germinating bud rice |
| CN110496662A (en) * | 2019-09-27 | 2019-11-26 | 武汉轻工大学 | A kind of long-grained nonglutinous rice protects embryo processing method and rice with remained germ |
| CN113351283A (en) * | 2021-05-31 | 2021-09-07 | 哈尔滨工程北米科技有限公司 | Rice moderate processing method based on big data, cloud technology and artificial intelligence |
| CN113713884A (en) * | 2021-08-31 | 2021-11-30 | 上海九穗农业科技有限公司 | Whitening method for germ-remaining rice |
| CN114471798A (en) * | 2022-01-21 | 2022-05-13 | 长沙荣业软件有限公司 | On-line detection method for rice processing reduction rate and rice milling pressure control method |
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| CN103657769A (en) * | 2013-11-28 | 2014-03-26 | 邱珍君 | Method for processing health care milled rice with embryo |
| CN103623889A (en) * | 2013-12-02 | 2014-03-12 | 湖北佳萌粮油有限公司 | Processing method for refined rice |
| CN105817282A (en) * | 2015-01-09 | 2016-08-03 | 陈文彬 | Fine brown rice and processing method thereof |
| CN104826685A (en) * | 2015-04-29 | 2015-08-12 | 苏州科谷米业有限公司 | Preparation method for storable black rice |
| CN104826686A (en) * | 2015-04-29 | 2015-08-12 | 苏州科谷米业有限公司 | Preparation method for storable rice |
| CN104826685B (en) * | 2015-04-29 | 2017-04-19 | 苏州润弘贸易有限公司 | Preparation method for storable black rice |
| CN104826686B (en) * | 2015-04-29 | 2017-04-19 | 苏州润弘贸易有限公司 | Preparation method for storable rice |
| CN107051621A (en) * | 2017-05-05 | 2017-08-18 | 刘景芳 | A kind of processing method of rice germ |
| CN107042133A (en) * | 2017-05-05 | 2017-08-15 | 东至县鸿棉工贸有限责任公司 | A kind of rice processing technique |
| CN108940409A (en) * | 2017-05-18 | 2018-12-07 | 句容靖昌生态农业有限公司 | A kind of purification rice production technique |
| CN107552124A (en) * | 2017-09-21 | 2018-01-09 | 中国农业大学 | A kind of more qualities are fresh to grind rice automatic processing system and method |
| CN108450791A (en) * | 2018-01-09 | 2018-08-28 | 张伟强 | A kind of manufacture craft of full nutrition rice germ |
| CN109105730A (en) * | 2018-07-23 | 2019-01-01 | 深圳威琳懋生物科技有限公司 | The manufacturing method and selenium-rich rice germ of selenium-rich rice germ |
| CN110354936A (en) * | 2019-07-01 | 2019-10-22 | 江苏鼎丰生态农业发展有限公司 | A kind of production equipment and processing method of baby's germinating bud rice |
| CN110496662A (en) * | 2019-09-27 | 2019-11-26 | 武汉轻工大学 | A kind of long-grained nonglutinous rice protects embryo processing method and rice with remained germ |
| CN110496662B (en) * | 2019-09-27 | 2021-07-23 | 武汉轻工大学 | Long-shaped rice embryo-preserving processing method and embryo-preserved rice |
| CN113351283A (en) * | 2021-05-31 | 2021-09-07 | 哈尔滨工程北米科技有限公司 | Rice moderate processing method based on big data, cloud technology and artificial intelligence |
| CN113713884A (en) * | 2021-08-31 | 2021-11-30 | 上海九穗农业科技有限公司 | Whitening method for germ-remaining rice |
| CN114471798A (en) * | 2022-01-21 | 2022-05-13 | 长沙荣业软件有限公司 | On-line detection method for rice processing reduction rate and rice milling pressure control method |
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