JPH06209724A - Whole rice preparation process and apparatus therefor - Google Patents

Abstract

PURPOSE:To remarkably improve the remaining ratio of embryo by heating brown rice with microwave irradiation. CONSTITUTION:A rice grain cooler 3 is connected to a microwave heating apparatus 2 to heat raw brown rice by microwave irradiation. A rice polisher 4 is placed after the rice grain cooler 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing embryo rice and an apparatus for producing embryo rice, which greatly improve the residual rate of embryo of rice grains.

[0002]

2. Description of the Related Art Embryo rice contains more nutritional components such as vitamin B1 and protein than ordinary white rice, and has recently attracted attention as a nutritional food. This germ rice is white rice that has been subjected to a rice-polishing action to remove only the bran layer while leaving the germ, and it is standardized that the germ survival rate is 80% or more. In order to secure this standardized value, it is necessary to select a suitable variety of germinal rice with high residual sproutability, but the suitable variety is expensive and the absolute amount is small, it is difficult to secure the raw brown rice and the taste is good. There were few good varieties. For this reason,
Studies have been conducted to process general brand rice to increase the germ survival rate and use it as a raw material for germ rice. 1. The rice grain structure is hardened by cooling the rice grain,
A method for increasing the adhesion between the germ and the endosperm. 2. A method in which the rice grains are dried to shrink the germs and make it difficult for the germs to contact the Kongo roll of the rice polishing machine during rice polishing. 3. A method of gelatinizing and binding an embryo and an endosperm by heating rice grains.

[0003]

However, the method of cooling rice grains and the method of drying rice grains have a drawback in that there is a large difference in the survival rate of germs due to the difference in shape and properties depending on the rice variety. . Further, the method of heating rice grains is effective in improving the survival rate of germs, but it has a drawback that the whole rice grains are gelatinized and the taste is deteriorated.

The present invention eliminates the drawbacks of the conventional method for producing germ rice and irradiates the raw brown rice with microwaves to heat it, whereby the residual rate of germ can be significantly improved, and It is an object of the present invention to provide an apparatus for producing germ rice.

[0005]

[Means for Solving the Problems] Raw brown rice is irradiated with microwaves and heated to dry the brown rice to a water content of 13% or less,
Next, the brown rice having an increased grain temperature is cooled to a grain temperature of the raw brown rice or less and then milled.

[0006] The step of irradiating the raw brown rice with microwaves to heat it and then cooling it is repeated a plurality of times to dry the brown rice to a water content of 13% or less and to cool the brown rice to the grain temperature of the raw brown rice or less and then to polish the rice. To do.

A rice grain cooling device is connected to a microwave heating device that heats the raw brown rice by irradiating it with microwaves, and a rice polishing machine is provided in a subsequent step of the rice grain cooling device to form an embryo rice production device.

[0008] The step of irradiating the raw brown rice with microwaves to heat and then cooling is repeated a plurality of times to dry the brown rice to a water content of 13% or less and to cool the brown rice to the grain temperature of the raw brown rice or less and then to polish the rice. Then, after washing the polished rice,
The surface of the polished rice is sprayed with an aqueous solution of one or more water-soluble dietary fibers and then dried.

[0009] A microwave heating device for irradiating microwaves to the raw brown rice by microwaves, a rice grain cooling device for cooling the brown rice whose grain temperature has risen, a rice polishing machine for polishing the cooled brown rice, and washing the polished rice An embryo rice producing device is constituted by a rice washing device and a coating device that sprays an aqueous solution of one or more water-soluble dietary fibers on the surface of the polished rice and then dries it.

[0010]

[Function] The raw brown rice is irradiated with microwaves to be heated to dry the brown rice to a water content of 13% or less, and then the brown rice having an increased grain temperature is cooled to the grain temperature of the raw brown rice or less. By the way, when the brown rice grain is dried, most of the moisture is discharged to the outside of the rice grain through the germ part, so that the moisture content at the joint between the germ of the rice grain and the endosperm becomes the highest. Further, since the microwave energy is absorbed in water, the heat generation at the junction between the germ having the highest water content and the endosperm is maximized, and the germ and the endosperm are gelatinized and bonded. Because the germ and the endosperm are gelatinized and bonded, and when the brown rice is polished, it is difficult for the germ to be germinated, so that the germ rice has a high germ survival rate. In addition, brown rice, which is cooled and has a low grain temperature, is milled at a low temperature so that the taste is not deteriorated and the rice is delicious.

The step of irradiating the raw brown rice with microwaves to heat it and then cooling it is repeated a plurality of times to give the brown rice a moisture content of 13%.
%, And the brown rice is cooled to below the grain temperature of the raw brown rice and then milled. Supply polished rice to the rice washing machine,
The glue powder layer remaining on the surface layer of the rice grains is removed, and the washed white rice is sent to the coating device. In a coating device, the surface of white rice is sprayed with one or more aqueous solutions of water-soluble dietary fiber and then dried. By washing the white rice, which has been made into germ rice having a high germ survival rate by heating with microwave irradiation, it is processed into non-washed rice that does not require washing during rice cooking. Then, by spraying an aqueous solution of water-soluble dietary fiber on the surface of the washed rice, and then drying it, the taste of cooked rice is significantly improved, and the oxidation that causes an off-taste or off-odor is prevented. ,
White rice with stable quality for a long time. Further, since the brown rice is dried to have a water content of 13% or less, even if the water content of the white rice is improved by washing the rice, the white rice having a water content of about 15% is finished by drying with the coating device. Therefore, there is no need for a special device for drying white rice with an improved water content by washing.

[0012]

EXAMPLE FIG. 1 is a flow chart showing a method for producing embryonic rice, in which embryonic rice was experimentally produced by the following methods A to D, and the survival rate of the embryo was investigated.

Method A is a method in which raw brown rice is simply milled. In the method B, the raw brown rice is irradiated with microwaves to be heated and then cooled, and the cooled brown rice is polished. In the method C, the raw brown rice was irradiated with microwaves and then cooled, and the cooled brown rice was irradiated with microwaves again to be heated and then cooled, and then the brown rice was heated and cooled twice by microwave irradiation. It was done. In the method D, the raw brown rice was irradiated with microwaves to be heated and then cooled, the cooled brown rice was irradiated with microwaves again to be heated and then cooled, and further irradiated with microwaves to be heated and then cooled. The brown rice is produced by repeating heating and cooling by microwave irradiation once.

The raw brown rice weighs 500 g,
Heating by microwave irradiation uses microwave oven (frequency 245
It was heated for 30 seconds at 0 MHz), cooled for 30 seconds in a refrigerating machine (internal temperature of 4 ° C.), and the rice was polished by a small rice mill for testing. The test results are shown in Table 1.

[0015]

[Table 1] As can be seen from this table, the germination residual rate of only the rice polished by the rice polishing machine is 38.8% (A), and the germ survival rate of the rice which has been heated by microwave and cooled is 52. % (B), 2
The germ survival rate after repeated microwave heating and cooling was 69.2% (C), and the germ survival rate after repeated microwave heating and cooling was 86.6% (D).
Is. From this test result, it is possible to dramatically improve the residual rate of germs by irradiating the raw brown rice with microwaves and heating and then cooling and polishing the rice, as compared with normal rice polishing without microwave heating. There was found.

Next, a first embodiment of an embryo rice producing apparatus according to the present invention will be described with reference to the drawings. FIG. 2 is a flow chart of the embryo rice producing apparatus, FIG. 3 is a partial side sectional view of the grinding type rice polishing machine, and FIG. 4 is a side sectional view of the microwave heating apparatus.

The embryo rice producing apparatus 1 comprises a microwave heating apparatus 2, a cooling tank 3 and a grinding type rice polishing machine 4. The grain elevator 7 having the hoppers 5 and 6 at the bottom communicates with the input gutter 9 of the microwave heating device 2 via the input tank 8, and the discharge gutter 10 of the microwave heating device 2 includes the belt conveyor 11 and the hopper 12. , Is connected to the cooling tanks 3A and 3B via the grain elevator 13 and the switching valve 14. Discharge shutters 15A and 15B are provided at the discharge portions of the cooling tanks 3A and 3B, respectively, and the cooling tanks 3A and 3B are supplied to the grinding type rice milling machine 4 via a belt conveyor 16, a hopper 17, a grain elevator 18 and a switching valve 19. Contact hopper 20.

In the microwave heating apparatus 2, a spiral cylinder 24 is provided on a main shaft 22 rotatably provided in a resin cylindrical body 21 standing upright as shown in FIG.
The space formed by 1 and 1 will be referred to as a downflow path 24. The main shaft 22 includes a bearing 26, a bearing 27 of a lower bearing portion 25, and an upper bearing portion 28.
Of the lower bearing 25 is supported by the bearing 29 of
In addition, the upper bearing portion 28 is connected to the supply hopper 3 via the support rod 31.
2 are connected respectively.

The charging port 33 of the charging trough 9 is connected to a charging rotary valve 34, and a rotary blade 35 is rotatably mounted inside the rotary valve 34. Upper lid 3 of supply hopper 32
6, a supply port 37 and an exhaust port 38 are opened, and a disperser 39 that evenly disperses rice grains is provided below the supply port 37. The exhaust port 38 communicates with the exhaust fan 40 via the exhaust chamber 39, and a restriction plate 41 for collecting rice grains is attached to the center of the lower part of the supply hopper 32.

At the lower end of the spiral cylinder 23, a scraping wing piece 44 for discharging rice grains downward from a discharge port 43 opened in the bottom plate 42.
The discharge port 43 is connected to a discharge rotary valve 48 having a rotary blade 47 rotatably mounted via a discharge channel 46 of a discharge gutter 45. The blower 49 and the blower gutter 50,
The discharge gutter 10 connected to the downflow passage 46 via the air outlet 51 and connected to the rotary valve 48 is connected to the belt conveyor 11 outside the machine. Motor 52 for rotating main shaft 27
Attached to the base 30 and the pulley 53 attached to the motor 52
And the pulley 54 of the main shaft 22 are connected via a belt 123.

With respect to the microwave, the tips of the waveguides 56 and 56B connected to the oscillators 55A and 55B are made to face the cylindrical body 21,
The lid cylinder 5 is attached to the upper end of the machine frame 57 provided with the waveguides 56 and 56B.
Connect 8

As shown in FIG. 3, the grinding type rice milling machine 4 has a main shaft 60 rotatably provided on a horizontal wall white polishing cylinder 59,
A whitening chamber 6 in which a spiral trochanter 61 and a ground whitening trochanter 62 are axially mounted, and a porous wall whitening cylinder 59 and a ground whitening trochanter 62 are main parts.
3 is connected to the supply port 64 and the other to the discharge port 65. A resistance plate 67 biased by a weight 66 is provided at the discharge port 65, and the discharge port 65 communicates with the outside of the machine through a discharge gutter 68.
The perforated wall polishing cylinder 59 is connected to a dust collecting duct (not shown) through the bran collecting chamber 69, and a supply hopper is provided above the supply port 64. A pulley 70 attached to the main shaft 60 and a pulley 72 attached to a motor 71 are connected via a belt 73.

Next, the operation of the above configuration will be described. The raw brown rice put into the hopper 5 is sent by the grain elevator 7 and sent to the input tank 8. The brown rice in the input tank 8 flows down the input gutter 9 and is supplied to the rotary valve 34 from the input port 33. . Brown rice is intermittently introduced into the supply hopper 32 from the supply port 37 by the rotation of the rotary blades 35, and the disperser 3
Then, the brown rice is concentrated in the center of the lower part of the supply hopper 32 by the regulation plate 42.

The brown rice dropped from the regulating plate 41 to the upper end of the spiral cylinder 23 flows down the downflow path 21 by the rotation of the spiral cylinder 23 and is sent to the discharge port 43 side. The brown rice flowing down the flow-down path 24 is first heated by the microwave oscillated by the microwave oscillator 55A and irradiated through the waveguide 56A. The brown rice heated by the microwave oscillator 55A flows down the downflow path 24, and is then heated again by the microwaves oscillated by the microwave oscillator 55B and irradiated through the waveguide 56B. The brown rice heated by the microwave oscillator 55B flows down the downflow path 24 to reach the bottom plate 42, and is scraped out by the rotation of the scraping blades 44 and is discharged from the discharge port 4.
3 is discharged to the outflow gutter 45. Brown rice flows down the outflow passage 46 of the outflow gutter 45 and is supplied to the rotary valve 48.
Brown rice is intermittently discharged by the rotation of the rotary blades 47,
It is supplied from the discharge gutter 10 to the belt conveyor 11.

Brown rice is fed from the belt conveyor 11 to the hopper 1
2, sent to the switching valve 14 through the grain elevator 13, and the switching valve 14
Is switched to the cooling tank 3A or the cooling tank 3B. The brown rice heated by the microwave heating device 2 and having an increased grain temperature is cooled to the grain temperature of the raw brown rice or less in the cooling tanks 3A and 3B. The cooled brown rice is supplied to the belt conveyor 16 from the cooling tank 3A or the cooling tank 3B by opening the shutter 15A or the shutter 15B. Brown rice is sent from the belt conveyor 16 to the switching valve 19 via the hopper 17 and the grain elevator 18,
Brown rice is supplied from the switching valve 19 to the microwave heating device 2 via the hopper 6, the grain elevator 7, the input tank 8 and the input gutter 9, and is heated again by the microwave. in this way,
The brown rice that has been dried to a moisture content of 13% or less and cooled to the grain temperature of the raw brown rice or less by repeating the heating by the microwave heating device 2 and the cooling tank 23 a plurality of times switches the switching valve 19. Supply hopper 20 by
Is supplied to the grinding-type rice milling machine 4 through.

The rice grains (brown rice) supplied to the spiral rotator 61 from the supply port 64 of the grinding type rice milling machine 4 are laterally fed to the milling chamber 63 by the spiral rotator 61. In the whitening chamber 63, the rice grains are whitened by the whitening action caused by the rotation of the ground whitening trochanter 62. Dust such as bran generated by the whitening action in the whitening chamber 63 is discharged to the rice bran chamber 69 from the through hole of the porous wall whitening cylinder 59 by the suction action of a suction device (not shown).
It is sent from the bran collecting chamber 69 to a bran collecting device such as a cyclone (not shown). The refined rice grains reach the discharge port 65, flow down the discharge gutter 68 while resisting the resistance plate 67, and are discharged to the outside of the machine. Note that the number of times of rice polishing is not limited to once as in the present embodiment, and a grain-raising machine may be installed side by side in the grinding-type rice-polishing machine 4 to circulate a plurality of times for rice-polishing. Plural units may be arranged in series to polish rice.

By the way, when the brown rice grain is dried, most of the moisture is discharged to the outside of the rice grain through the germ part, so that the water content at the joint between the germ of the rice grain and the endosperm becomes the highest. In addition, since the microwave energy is absorbed in water, the heat generated at the junction between the germ with the highest water content and the endosperm is maximized,
The germ and endosperm are gelatinized and bonded. Since the germ and the endosperm are gelatinized and bonded, it is difficult for the unpolished rice to sprout when the rice is polished, so that the germ rice has a high germ survival rate. In addition, brown rice, which is cooled by the cooling tank 3 and has a low grain temperature, is milled at a low temperature, so that it is delicious rice.

Next, a second embodiment of the embryo rice producing apparatus according to the present invention will be described with reference to the drawings. FIG. 5 is a flow chart of the embryo rice producing apparatus, FIG. 6 is a side sectional view of the rice washing apparatus, and FIG. 7 is a side sectional view of the coating apparatus.

The embryo rice producing apparatus 1 comprises a microwave heating apparatus 2, a cooling tank 3, a grinding type rice milling machine 4, a rice washing apparatus 74 and a coating apparatus. The grinding type rice milling machine 4 comprises a grain fried machine 76 and a feeding hopper. The rice washing device 74 is connected via 77, and the rice washing device 74 is connected to the coating device 75 via a grain elevator 78 and a supply hopper 79. The microwave heating device 2, the cooling tank 3, the grinding-type rice milling machine 4, and the auxiliary device have the same configurations as those in the first embodiment, and the description thereof will be omitted.

The rice washing device 74 has a cylindrical machine frame 82 provided with a supply gutter 80 at one end and a discharge gutter 81 at the other end.
3 is rotatably installed horizontally. One end opening of the inner cylinder 83 is communicated with a rice supply path 85 formed by a supply gutter 80 and an inclined supply chute 84 connected to the supply gutter 80, and the other end opening is connected to a discharge gutter 81.
The discharge pipe of the water supply pipe 87 provided with a flow rate adjusting means (not shown) is connected to the rice supply passage 85, which is communicated with the rice discharge passage 86 formed in 1. The end side of the inner cylinder 83 is formed by a porous wall 88 to form a dehydration section 89, and the other inner cylinder 83 is formed as a rice washing section 90. A partition 91 is provided around the dehydration section 89 to form a drainage chamber 92, and a drainage gutter 94 is disposed below a drainage port 93 at the lower end of the drainage chamber 92. A screw 96 having resin-made screw blades 95 is laterally provided over the entire length of the inner cylinder 83 so that the screw 96 rotates faster than the inner cylinder 83.

The coating device 5 will be described with reference to FIG. A hollow main shaft 96 having both ends opened and partition walls 97 provided in the middle is rotatably supported in a perforated wall cylinder 98.
The spiral rotator 99 and the stirring rotator 100 are axially attached to the shaft 6. Ventilation port 1 provided on main shaft 96 with hollow stirring trochanter 100
01, and the stirring projection 102
And a jet port 103 is formed along the stirring protrusion 102. The first half between the stirring trochanter 100 and the perforated wall cylinder 98 is formed in the spray chamber 104, and the second half is formed in the drying chamber 105.
Contact 7 respectively. A drain gutter 108 is provided so as to be connected to the outlet 107, and a resistance lid 110 is attached to the outlet 107 so that the degree of compression can be adjusted by a resistance lid adjusting device 109.

A dust collecting chamber 111 is formed around the perforated wall cylinder 98, and the lower portion thereof is connected to the dust collecting hopper 112. The dust collecting hopper 112 is blown by a cyclone (not shown) via a blower 113.
Contact the dust collector, etc. The two-fluid nozzle 114 is provided so as to face the opening end of the main shaft 96, and one of the supply sides of the two-fluid nozzle 114 has a water-soluble plant through the water pipe 115, the flow rate control valve 116, the flow meter 117, and the electromagnetic valve 118. The air compressor 12 is connected to a tank 119 that stores an aqueous solution of fibers, and the other is connected via a blower pipe 120 and an air filter 121.
Connected to 2. As the water-soluble plant fiber, guar gum, locust bean gum, tamarind gum, tara gum, pectin, xanthan gum, pullulan and the like are suitable, and one or more kinds of them are used in the aqueous solution.

Next, the operation of the above configuration will be described.
The brown rice that has been dried to a moisture content of 13% or less by being repeatedly heated by the microwave heating device 2 and cooled by the cooling tank 3 several times and cooled to the grain temperature of the raw brown rice or less is the grinding type rice polishing machine 4 Sent to and milled. The rice grain (embryo rice) that has been subjected to rice polishing is supplied to the rice washing device 74 via the grain elevator 76 and the supply hopper 77.

The rice washing device 74 includes a screw 96 and an inner cylinder 83.
And are rotating in the same direction.
3 at 1600 rpm and screw 96 at 172 per minute
It is 0 rotation. The rice grains falling from the supply hopper 77 into the supply gutter 80 are supplied to the water supply pipe 87 while flowing down the supply chute 84.
It comes into contact with the water supplied from and is sent to the rice washing section 90 in the inner cylinder 83 as it is. Since the inner cylinder 83 rotates at 1600 rpm, the rice grains and water spread by centrifugal force along the peripheral wall of the inner cylinder 83, while the screw 96 rotates at 1720 rpm, so the screw 96 rotates at 120 rpm. The rice grains will be transferred by rotation. Therefore, the rice grains soaked in water pass through the rice washing section 90 in about 4 to 5 seconds without being stirred, and during this time, the bran pieces attached to the surfaces of the rice grains absorb water and are softened.

The rice grains and water that have passed through the rice washing section 90 are blown off from the porous wall 88 while passing through the dehydration section 89 in about 1 second, and along with this water, rice bran pieces and the like on the surface of which the rice grains have been softened easily. It is peeled off and forced to be blown away. In this way, the rice grains that have been drained by removing all of the bran pieces and attached water, that is, the washed rice grains fall in the discharge gutter 81 and are discharged, while the contaminated water mixed with the bran pieces is discharged into the discharge chamber 92.
After being blown inside, it is discharged through the drain gutter 94.
The washed rice grains discharged from the discharge gutter 108 are supplied to the coating device 75 from the grain elevator 78 via the supply hopper 79.

The rice grains flowing down from the supply hopper 79 through the supply port 106 are laterally fed to the spray chamber 104 by the spiral rotator 99. The solution of the water-soluble plant fiber (for example, guar gum decomposition product) in the tank 119 reaches the two-fluid nozzle 114 via the water pipe 115 by opening the solenoid valve 118, and is compressed by the compressed air from the air compressor 122 into a mist. It becomes wind and is ejected from the ventilation port 101 to the spray chamber 104 through the ejection port 103. The rice grains having the water-soluble vegetable fiber solution added to the surface in the spray chamber 104 are uniformly coated by the stirring action caused by the rotation of the stirring trochanter 100.
The rice grain coated with the water-soluble plant fiber in the spray chamber 104 is dried by the air blown from the air blow port 103 in the drying chamber 105, and the coating is further strengthened. The dried rice grains are discharged through outlet 10.
The discharge gutter 108 flows down from 7 against the resistance lid 110 and is discharged to the outside of the machine.

As described above, by washing rice grains (white rice) finished with germinated rice having a high germ survival rate by heating with microwave irradiation with a rice washing machine, so-called non-washed rice is not required during rice cooking. It can be processed. By spraying an aqueous solution of water-soluble vegetable fiber on the surface of washed rice grains (white rice) with a coating device, the taste of cooked rice is greatly improved and the oxidation that causes off-taste and off-odor is prevented. It is possible to obtain rice grains (white rice) that have been accumulated and have stable quality for a long period of time.

[0038]

EFFECTS OF THE INVENTION According to the present invention, since the raw brown rice is heated by being irradiated with microwaves, the energy of the microwaves is absorbed in the water, so that the heat generated at the junction between the germ and the endosperm, which has the highest water content, is heated. Is maximized, and the germ and endosperm are gelatinized and bonded. Since the germ and the endosperm are gelatinized and bonded, it is difficult for the unpolished rice to sprout when the rice is polished, so that the germ rice has a high germ survival rate. In addition, brown rice that has been cooled and has a low grain temperature is milled at a low temperature, so that the taste is not deteriorated by high temperature milled rice, and the rice is delicious.

Furthermore, by washing the white rice, which has been made into germ rice having a high germ survival rate by heating with microwave irradiation, with a rice washing machine, it is not necessary to wash the rice during cooking.
It can be processed into so-called unwashed rice. And by spraying an aqueous solution of water-soluble vegetable fiber on the surface of washed white rice with a coating device, the taste of cooked rice is significantly improved and the oxidation that causes an off-taste or off-odor is prevented. It can be white rice with stable quality for a long time. Further, since the brown rice is dried to have a water content of 13% or less, even if the water content of the white rice is improved by washing the rice with the rice washing device, the white rice having a water content of about 15% is finished by the drying with the coating device. Therefore, there is no need for a special device for drying the white rice having an improved water content in the washed rice.

[Brief description of drawings]

FIG. 1 is a flowchart showing a method for producing embryo rice.

FIG. 2 is a flowchart of an embryo rice production device.

FIG. 3 is a side sectional view of a part of a grinding type rice polishing machine.

FIG. 4 is a side sectional view of a microwave heating device.

FIG. 5 is a flowchart of an embryo rice production device.

FIG. 6 is a side sectional view of a rice washing device.

FIG. 7 is a side sectional view of the coating apparatus.

[Explanation of symbols]

 1 Embryo Rice Manufacturing Device 2 Microwave Heating Device 3 Cooling Tank 4 Grinding Rice Milling Machine 5 Hopper 6 Hopper 7 Grain Grainer 8 Input Tank 9 Input Gutter 10 Discharge Gutter 11 Belt Conveyor 12 Hopper 13 Grain Drier 14 Switching Valve 15 Shutter 16 Belt conveyor 17 Hopper 18 Grain lifter 19 Switching valve 20 Supply hopper 21 Cylindrical body 22 Main shaft 23 Spiral cylinder 24 Downflow passage 25 Lower bearing part 26 Bearing 27 bearing 28 Upper bearing part 29 Bearing 30 Stand 31 Support rod 32 Feed hopper 33 Input port 34 Rotary Valve 35 Rotating Blade 36 Upper Lid 37 Supply Port 38 Exhaust Port 39 Exhaust Chamber 40 Blower 41 Control Plate 42 Bottom Plate 43 Discharge Port 44 Scratch Blade 45 Outflow Gutter 46 Outflow Path 47 Rotating Blade 48 Rotary Valve 49 Blower 50 Blower Gutter 51 Blower 52 Motor 53 Pulley 54 Pulley 55 Microwave Oscillator 56 Waveguide 57 Machine Frame 58 Lid Cylinder 59 Perforated Wall Whitening Cylinder 60 Main Spindle 61 Spiral Rotor 62 Grinding Whitening Transducer 63 Whitening Chamber 64 Supply Port 65 Discharge Port 66 Weight Weight 67 Resistance Plate 68 Discharge Gutter 69 Bran collecting chamber 70 Pulley 71 Motor 72 Pulley 73 Belt 74 Rice washing device 75 Coating device 76 Grain hopper 77 Supply hopper 78 Grain hopper 79 Supply hopper 80 Supply gutter 81 Discharge gutter 82 Machine frame 83 Inner cylinder 84 Supply chute 85 Supply Yoneji 86 Rice drainage 87 Water supply pipe 88 Porous wall 89 Dewatering part 90 Washing part 91 Partition wall 92 Drainage chamber 93 Drainage port 94 Drain trough 95 Screw blade 96 Main shaft 97 Partition wall 98 Perforated wall tube 99 Spiral rotor 100 Stirring rotor 101 Ventilation Mouth 102 Stirring projection 103 Blast port 104 Spraying chamber 105 Drying chamber 106 Supply port 10 7 Discharge Port 108 Discharge Gutter 109 Resistance Lid Control Device 111 Dust Collection Chamber 112 Dust Collection Hopper 113 Blower 114 Two-Fluid Nozzle 115 Water Pipe 116 Water Flow Control Valve 117 Flowmeter 118 Electromagnetic Valve 119 Tank 120 Air Pipe 121 Air Filter 122 Air Compressor 123 belt

Front page continued (72) Inventor Tsunehiko Shibata 2-30 Saijo Nishihonmachi, Higashihiroshima City, Hiroshima Prefecture Satake Manufacturing Co., Ltd.

Claims (5)

[Claims] 1. The raw rice brown rice is irradiated with microwaves to be heated to dry the brown rice to a moisture content of 13% or less, and then the brown rice having an increased grain temperature is cooled to a grain temperature of the raw brown rice or less and then milled. A characteristic method for producing embryo rice. 2. The step of irradiating the raw brown rice with microwaves for heating and then cooling is repeated a plurality of times to dry the brown rice to a moisture content of 13% or less and to cool the brown rice to the grain temperature of the raw brown rice or less. A method for producing embryonic rice, which comprises post-rice polishing. 3. A germ rice producing apparatus, characterized in that a rice grain cooling device is connected to a microwave heating device for irradiating and heating microwaves of raw brown rice, and a rice polishing machine is provided in a subsequent step of the rice grain cooling device. . 4. The step of irradiating the raw brown rice with microwaves for heating and then cooling is repeated a plurality of times to dry the brown rice to a moisture content of 13% or less and to cool the brown rice to the grain temperature of the raw brown rice or less. After milling the rice and washing the milled rice, one or two of water-soluble dietary fiber is added to the surface of the milled rice.
A method for producing embryonic rice, which comprises spraying an aqueous solution of at least one seed and then drying. 5. A microwave heating device for irradiating the raw brown rice with microwaves to heat it, a rice grain cooling device for cooling the brown rice whose grain temperature has risen, a rice mill for polishing the cooled brown rice, and a polished rice. An embryo rice producing device comprising: a rice washing device for washing rice and a coating device for spraying an aqueous solution of one or more water-soluble dietary fibers on the surface of the polished rice and then drying.