CN104174455A - Low-temperature-rise rice processing method - Google Patents
Low-temperature-rise rice processing method Download PDFInfo
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- CN104174455A CN104174455A CN201410405573.2A CN201410405573A CN104174455A CN 104174455 A CN104174455 A CN 104174455A CN 201410405573 A CN201410405573 A CN 201410405573A CN 104174455 A CN104174455 A CN 104174455A
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Abstract
Disclosed is a low-temperature-rise rice processing method. The low-temperature-rise processing method includes two times of graded hulling, rice milling through a low-temperature-rise rice milling unit, one time of graded crushing, two times of grading and three times of polishing, wherein the step of graded hulling for two times includes using a hulling machine to specially process raw grain rice, and using another hulling machine to specially process unhusked rice, a KFM2525B-type low-temperature-rise air-jetting sand-roller rice milling unit is adopted for multi-machine slightly-milling, strong air jetting and multi-point air incoming, a whitening chamber is good in bran discharging effect, and temperature difference between the inside and the outside of rice grains is reduced. One time of graded crushing, two times of grading and three times of polishing are performed before polishing, starch on the surfaces of the rice grains is pre-gelatinized and gelled, and cracks are filled through gelatinizing of the starch; an MPGU-50K/60K rice polisher is adopted, spraying for dampening is realized through high-pressure air, and smoothness and cleanliness of the surfaces of all rice grains can be guaranteed; an air suction system is adopted, so that humidity and temperature of rice are lowered, and smoothness and cleanliness of the rice are realized; polishing is performed for three times, so that rise speed of surface temperature of the rice grains is reduced effectively, and rice breaking rate is lowered.
Description
Technical field
The invention belongs to processing of farm products field, relate in particular to a kind of low-temperature-rise rice processing technique method.
Background technology
Paddy is processed into rice by existing machinery equipment, all adopt streamlined processing mode, the streamlined production line using, once complete continuously from paddy to rice finished product, although this traditional processing technology efficiency is higher, but because the grain of rice is rubbed and collide and will produce a large amount of heat, grain of rice surface temperature is raise in the operations such as husk rice, polishing, classification.Due to grain of rice poor thermal conductivity, heat is inwardly transmitted slower by the top layer of the grain of rice, make the grain of rice form larger thermograde (being the temperature difference).The larger temperature difference produces thermal stress in the grain of rice, and thermal stress exceedes the intrinsic intensity of meter matter and will cause the grain of rice to break or quick-fried waist, has improved broken rice rate.Adopt traditional handicraft processing to there is the shortcoming of broken rice rate high (can reach 5% left and right), the reduction of polished rice rate.
The present invention is based on above background technology and propose, reduce finished product rice crackle thereby reach, reduce increasing broken, improve head rice yield, keep the objects such as food flavor.
Summary of the invention
The object of this invention is to provide a kind of low temperature rice processing technique method, adopt secondary grading rice huller paddy, low temperature rice mill husk rice, secondary grading, three polishings to slow down the rate of climb of grain of rice surface temperature, reduce to greatest extent broken rice rate, improve head rice yield.For achieving the above object, the present invention adopts following technical proposals:
1, secondary grading rice huller paddy: rice processing broken rice rate nearly 10% occurs in rice huller paddy operation.Looping back rice huller for brown rice in conventional processes heavily grinds, cause quick-fried waist to increase, the vicious circle problem increasing of cracking rice, the present invention specially processes raw grain paddy with a hulling machine, and another special disposal is returned rice huller paddy, process respectively above two kinds of grain that structure is different with different roll gap pressures like this, avoided brown rice return rice huller heavily grind and cause grain of rice surface temperature rise the too fast problem that causes cracking rice and increase.
2, low-temperature-rise husk rice unit husk rice
In paddy process, more than 60% cracking rice is created in husk rice workshop section.Conventionally the specific yield whitening movement area of rice machine is certain, the flow of the grain of rice by rice machine or the external pressure applying are larger, and in whitening chamber, grain of rice density is more greatly that pearling intraventricular pressure is larger, and it is faster that the grain of rice is cut temperature rise in process at stone roller, windage through husk rice chamber increases, and causes a large amount of increasings broken.The present invention adopts KFM2525B type low-temperature-rise spray wind sand roller rice unit (multimachine gently grinds), this type rice mill has powerful spray wind (air quantity that penetrates whitening chamber is 2.1 times of conventional rice machine), (whitening chamber row chaff is effective for multiple spot air intake, body chamber row chaff is unimpeded) feature, add the present invention and use the light mode of grinding of multimachine, slow down to greatest extent the rate of rise in temperature of rice milling process mesogranule appearance, reduced the temperature difference of grain of rice appearance and internal layer.Thereby temperature rise is low, can keep to greatest extent the original mouthfeel of rice.
3, secondary grading: because polishing process is most important link, entering cracking rice in machine rice is the principal element that affects polishing effect, also affects the flow of polishing machine simultaneously, increases power consumption.Affect polishing effect in order to reduce to greatest extent after cracking rice of producing in husk rice operation enters polishing machine, the present invention carries out scalping and carries broken before polishing, not only can improve the operating efficiency of polishing machine, also can avoid polishing classification again to damage grain of rice surface and cause broken rice rate increase.Therefore the present invention adopts secondary grading, before throwing classification and throw after classification again, on the one hand can increase polishing effect, reduce power consumption, also alleviated rice grading pressure after polishing simultaneously.Carrying out polishing front and back Er road classification is to kill two birds with one stone.
4, three polishings: because brown rice is after whitening through multiple passage, removal is cracked rice and chaff sheet, after spray damping, profit rice, (adhesion of endosperm and rice bran is reduced, because the water adding is little, only form the film of thin layer on the surface of the grain of rice, polishing time is not long in addition, moisture content on rice does not affect), enter in the polishing room of polishing machine, under certain pressure and temperature, make grain of rice surface glazing by friction.By polishing, not only can remove the floating chaff in grain of rice surface, also play and make the pre-gelatinization of grain of rice surface starch and gelatinize effect, starch gelatinization makes up crackle, thereby obtains the sparkling and crystal-clear bright and clean presentation quality of color and luster, improves storage property and the practical quality of rice.The present invention adopts MPGU-50K/60K polishing rice machine, and this type not only, by pressure-air spray damping, can ensure the cleaning of whole grain of rice smooth surface, and have rational air draft system, reduces the humidity and temperature of rice, makes rice surface bright and clean.Carry out three polishings, effectively slowed down long speed in grain of rice performance temperature, reduce increasing broken, and guaranteed the polishing effect of rice.
implementation result:
Taking 100 tons, Meitan County, Guizhou Province bamboo scented rice industry Co., Ltd processing high grade rice as example:
Crack rice≤1.0%; The white grain of chalk rate≤30.0%, glue denseness >=50.0mm, impurity≤0.10%, unsound grain≤1.0%, yellow rice kernel≤0.2%, color and luster, smell be without abnormal color and luster and smell to greatest extent; Rice milling yield >=57%.
Be 1000 yuan by 18 yuan/kg of high quality white rice unit price, 14 yuan/kg of processing cost, the byproduct output value that often processes 1 ton of rice, can realize 1,900,000 yuan of processing incomes, 400,000 yuan of net profits.
In sum: the present invention has effectively slowed down the rate of climb of rice process mesogranule surface temperature, effectively reduce the objects such as broken, raising head rice yield, maintenance food flavor.
Detailed description of the invention
A kind of low-temperature-rise rice processing technique method of the present invention,
1, secondary grading rice huller paddy: this method is specially processed raw grain paddy with a hulling machine, and another special disposal is returned rice huller paddy, process respectively above two kinds of grain that structure is different with different roll gap pressures like this, avoided brown rice return rice huller heavily grind and cause grain of rice surface temperature rise the too fast problem that causes cracking rice and increase.
2, low-temperature-rise husk rice unit husk rice the inventive method adopts KFM2525B type low-temperature-rise spray wind sand roller rice unit (multimachine gently grinds), this type rice mill has powerful spray wind (air quantity that penetrates whitening chamber is 2.1 times of conventional rice machine), (whitening chamber row chaff is effective for multiple spot air intake, body chamber row chaff is unimpeded) feature, add the inventive method and use the light mode of grinding of multimachine, slow down to greatest extent the rate of rise in temperature of rice milling process mesogranule appearance, reduced the temperature difference of grain of rice appearance and internal layer.Thereby temperature rise is low, can keep to greatest extent the original mouthfeel of rice.
3, the inventive method before polishing, carry out scalping carry broken, secondary grading: not only can the husk rice of low-temperature-rise husk rice unit improve the operating efficiency of polishing machine, also can avoid polishing classification again to damage grain of rice surface and cause that broken rice rate increases.Therefore the inventive method adopts secondary grading, before throwing classification and throw after classification again, on the one hand can increase polishing effect, reduce power consumption, also alleviated rice grading pressure after polishing simultaneously.Carrying out polishing front and back Er road classification is to kill two birds with one stone.
4, three polishings: because brown rice is after whitening through multiple passage, removal is cracked rice and chaff sheet, after spray damping, profit rice, (adhesion of endosperm and rice bran is reduced, because the water adding is little, only form the film of thin layer on the surface of the grain of rice, polishing time is not long in addition, moisture content on rice does not affect), enter in the polishing room of polishing machine, under certain pressure and temperature, make grain of rice surface glazing by friction.By polishing, not only can remove the floating chaff in grain of rice surface, also play and make the pre-gelatinization of grain of rice surface starch and gelatinize effect, starch gelatinization makes up crackle.The inventive method adopts MPGU-50K/60K polishing rice machine, and this type not only, by pressure-air spray damping, can ensure the cleaning of whole grain of rice smooth surface, and have rational air draft system, reduces the humidity and temperature of rice, makes rice surface bright and clean.Carry out three polishings, effectively slowed down long speed in grain of rice performance temperature, reduce increasing broken, and guaranteed the polishing effect of rice.
Claims (5)
1. a low-temperature-rise rice processing technique method, is characterized in that: secondary grading rice huller paddy; The husk rice of low-temperature-rise husk rice unit; Scalping is carried broken, secondary grading; The technological method for processing of three polishings.
2. low-temperature-rise rice processing technique method according to claim 1, it is characterized in that: described secondary grading rice huller paddy: specially process raw grain paddy with a hulling machine, and another special disposal is returned rice huller paddy, process respectively above two kinds of grain that structure is different with different roll gap pressures like this, avoided brown rice return rice huller heavily grind and cause grain of rice surface temperature rise too fast cause cracking rice increase.
3. low-temperature-rise rice processing technique method according to claim 1, it is characterized in that: described low-temperature-rise husk rice unit husk rice, adopt KFM2525B type low-temperature-rise spray wind sand roller rice unit, multimachine gently grinds, this type rice mill has powerful spray wind, the air quantity that penetrates whitening chamber is 2.1 times, multiple spot air intake of conventional rice machine, whitening chamber row chaff is effective, the unimpeded feature of body chamber row's chaff, slow down to greatest extent the rate of rise in temperature of rice milling process mesogranule appearance, reduced the temperature difference of grain of rice appearance and internal layer.
4. low-temperature-rise rice processing technique method according to claim 1, it is characterized in that: described secondary grading: before polishing, carry out scalping and carry broken, secondary grading, carry out polishing front and back Er road classification, it is classification again after the front classification of polishing and polishing, increase on the one hand polishing effect, reduce power consumption, also alleviated rice grading pressure after polishing simultaneously.
5. low-temperature-rise rice processing technique method according to claim 1, it is characterized in that: three times described polishings: because brown rice is after whitening through multiple passage, removal is cracked rice and chaff sheet, through spray damping, after profit rice, the adhesion of endosperm and rice bran is reduced, because the water adding is little, only form the film of thin layer on the surface of the grain of rice, in addition polishing time is not long, moisture content on rice does not affect, enter in the polishing room of polishing machine, under certain pressure and temperature, make grain of rice surface glazing by friction, by polishing, not only can remove the floating chaff in grain of rice surface, also play the pre-gelatinization of grain of rice surface starch and the gelatinize effect of making, starch gelatinization makes up crackle, this method adopts MPGU-50K/60K polishing rice machine, this type is not only by pressure-air spray damping, can ensure the cleaning of whole grain of rice smooth surface, and there is rational air draft system, reduce the humidity and temperature of rice, make rice surface bright and clean, carry out three polishings, effectively slow down long speed in grain of rice performance temperature, reduced rice broken, guaranteed the polishing effect of rice.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138207A (en) * | 2017-05-26 | 2017-09-08 | 武汉轻工大学 | Polyploid paddy classification rice huller valley system system and polyploid paddy rice huller paddy method |
| CN108745451A (en) * | 2018-05-24 | 2018-11-06 | 益阳市福华米业有限公司 | A kind of low-temperature-rise rice processing technique method |
| CN109126938A (en) * | 2018-11-02 | 2019-01-04 | 宁夏昊王米业集团有限公司 | A kind of low temperature process method for rice finished product |
| 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 |
| CN109847849A (en) * | 2018-11-29 | 2019-06-07 | 浙江天下正方农业发展有限公司 | A kind of meter of skin powder and its production technology |
| CN111701636A (en) * | 2020-06-11 | 2020-09-25 | 安庆常润米业股份有限公司 | Processing method of low-temperature-rise rice |
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| 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 |
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| CN104174455B (en) | 2016-06-01 |
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