JP2648258B2 - Method and apparatus for producing washed and soaked rice - Google Patents

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 washed and soaked rice in which polished rice is washed and immersed in warm water to remove water adhering to the polished rice after immersion, and to implement the method. It relates to a manufacturing device.

[0002]

2. Description of the Related Art In a method and an apparatus for producing such washed and immersed rice, conventionally, the treatment for removing the adhering water is carried out by drying with a heating means using a heater, hot air or the like (for example, see Japanese Patent Application Laid-Open No. H11-157556). See JP-A-02-219549).

[0003]

However, according to the above-mentioned prior art, when removing the adhering water, a portion near the surface of the polished rice is unnecessarily dried, and the inner portion of the polished rice is unnecessarily dried. There is a possibility that a difference in the water content between the portion near the surface and the defective portion of the polished rice such as cracks and body cracks may occur. Washed soaked rice in such a defective state becomes so-called "watery rice" after cooking, and the taste is remarkably reduced.
There was a drawback that storage stability was also reduced. An object of the present invention is to eliminate the above-mentioned conventional disadvantages.

[0004]

A first characteristic configuration of the method for producing washed and soaked rice according to the present invention is that the treatment for removing the adhering water is performed by forcibly moving the milled rice after the soaking. is there.

[0005] The second method of the present invention for producing washed soaked rice.
The fifth to fifth characteristic configurations specify preferred specific configurations when implementing the first characteristic configuration. That is, the second characteristic configuration is that the hot water used for the cleaning and immersion treatment is at least 70 degrees Celsius.

A third characteristic configuration is that the moisture (weight ratio) of the polished rice from which the adhering water has been removed is 25 to 30%.

A fourth characteristic configuration is that the polished rice from which the adhering water has been removed is subjected to deaeration packaging processing or vacuum packaging processing.

[0008] A fifth characteristic configuration resides in that packaging is performed together with a deoxidizer in the deaeration packaging process or the vacuum packaging process.

First of the apparatus for producing washed and soaked rice according to the present invention.
The feature configuration specifies a suitable apparatus when the manufacturing method according to the first feature configuration in the above-described method for manufacturing washed and immersed rice is performed.

Second Embodiment of the Apparatus for Producing Washed and Soaked Rice According to the Present Invention
Is characterized in that in the manufacturing apparatus according to the first feature configuration, there is provided an apparatus for performing degassing packaging processing or vacuum packaging processing of the polished rice from which the attached water has been removed.

[0011]

The operation of the method for producing washed and soaked rice according to the present invention is as follows. According to the first characteristic configuration, adhered water is removed by subjecting the washed and soaked rice after immersion to forced movement such as centrifugal movement or vibration. Therefore, in the removal treatment of the adhered water, it is possible to prevent drying of the portion near the surface in the polished rice, and as a result, it is possible to suppress the occurrence of defective states of the polished rice such as cracks and body cracks.

The operation according to the second characteristic configuration is as follows. In general, the water absorption effect of polished rice is promoted as the temperature of the immersed water increases. Therefore, the immersion treatment with warm water has a quick water absorbing action. In addition, the use of hot water of 70 degrees Celsius or more can simultaneously exert pasteurization.

The operation of the third characteristic configuration is as follows. The main purpose of rice cooking, a rice cooking method, is to gelatinize starch, which is a main component of rice, and requires a certain amount of moisture. Therefore, by adding water to the polished rice in advance, it is possible to uniformly supply the water required for gelatinizing starch without further adding water during cooking. On the other hand, the amount of water remaining after cooking rice greatly affects the taste of rice, which is a finished product of rice cooking. That is, if the amount of water is less than the appropriate amount, it is “Katai”, and if it is more, it is “Betcha”. Therefore, adding 25 to 30% by weight of water to the polished rice has the effect of producing a good taste of the rice.

The operation of the fourth characteristic configuration is as follows. By performing the deaeration packaging process or the vacuum packaging process on the previously washed and soaked rice, the contact with the outside air is cut off, and the effect of maintaining the water content and preventing the deterioration of the quality and hygiene condition is exerted.

The operation of the fifth characteristic configuration is as follows. By subjecting the washed and soaked rice to a deaeration packaging process or a vacuum packaging process together with a deoxidizer, the contact with oxygen is interrupted, thereby preventing the oxidation and preventing the deterioration of quality.

The operation of the apparatus for producing washed and soaked rice according to the present invention is as follows. The operation of the manufacturing apparatus according to the first feature configuration is the same as the operation of the manufacturing method according to the first feature configuration, and is an apparatus for forcibly moving the washed and soaked rice after immersion, such as centrifugal motion and vibration. The attached water is thereby removed, so that it is possible to prevent drying of a portion near the surface in the polished rice, and as a result, it is possible to suppress the occurrence of a defective state of the polished rice such as cracks and body cracks.

The operation of the manufacturing apparatus according to the second aspect is the same as the operation of the manufacturing method according to the fourth aspect, wherein the previously washed and soaked rice is packaged by a deaeration packaging or vacuum packaging apparatus. Therefore, the contact with the outside air is shut off, the water content can be maintained, and the deterioration of quality, hygiene and the like can be prevented.

[0018]

The effects of the method for producing washed and soaked rice according to the present invention are as follows. According to the first characteristic configuration, it is possible to suppress the occurrence of a defective state of the polished rice such as cracks and body cracks, so that it is possible to manufacture washed and immersed rice with improved taste and storage stability.

According to the second characteristic configuration, the immersion process can be performed quickly, and the sterilization process can be performed at the same time, and the working efficiency can be improved.

According to the third characteristic configuration, it is possible to manufacture washed and soaked rice with improved taste.

According to the fourth characteristic configuration, it is possible to improve the preservability of the washed and soaked rice and maintain the taste.

According to the fifth characteristic configuration, it is possible to maintain the quality of the washed and soaked rice.

The effects of the apparatus for manufacturing washed and soaked rice according to the present invention are as follows. According to the first feature configuration, it is possible to provide an apparatus that implements the first feature configuration of the above-described method for producing washed and soaked rice.

According to the second characteristic configuration, it is possible to provide an apparatus for implementing the fourth characteristic configuration of the above-described method for producing washed and soaked rice.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

The configuration of the present embodiment shown in FIG. 1 is such that hot water is supplied to the polished rice to wash and immerse the polished rice, and the immersion part A is attached by forcibly moving the polished rice after immersion. It is composed of an adhering water removing section B for removing water and a packaging section C for vacuum-packing the milled rice from which the adhering water has been removed.

The washing and immersing section A will be described in detail. The washing and immersing tank 1 for washing and immersing the polished rice is provided as a main part. Above the washing and immersing tank 1, a polished rice supply valve 2 (a fixed amount sending means) is provided. ) Is installed in the bottom of the washing and immersion tank 1, and a delivery valve 1 a for delivering the polished rice downward is provided at the bottom of the washing and immersion tank 1. A hot water supply pipe 5 controlled to be opened and closed by a hot water supply valve 4 and a drain pipe 1b controlled to be opened and closed by a drain valve 1c are connected. A dehydration vessel 8 is provided below the washing and immersion tank 1 on a table F so as to be able to store the polished rice that has been immersed and sent out from the delivery valve 1a.

The washing / immersion tank 1 has a stirrer 7. A stirrer 7 is provided at the center of the longitudinal axis of the washing and immersion tank 1 and has a rotating shaft 7a driven by a driving force of a washing motor 12, and a U-shaped stirring device having both ends connected to the rotating shaft 7a. And a rod 7b.

The upstream end of the hot water supply pipe 5 is connected to a water heater 6 to receive hot water.

The dewatering container 8 is formed of a net-like member, and is capable of storing only the polished rice after immersion and discharging only moisture.

The method of using the washing and immersing section A is as follows. The polished rice as a material is once contained in the polished rice tank 3, and the polished rice supply valve 2 is driven to send the polished rice into the washing and immersion tank 1. By operating the hot water supply valve 4, a constant amount of hot water at an appropriate temperature is supplied from the hot water supply pipe 5 into the washing and immersion tank 1. The hot water supplied from the hot water supply pipe 5 is heated by a hot water supply 6.

The hot water at the appropriate temperature is, for example, 7 degrees Celsius.
It is warm water of 0 degrees or more. This is because pasteurization treatment can be performed simultaneously with the washing and immersion treatment.

In the washing and immersion tank 1, the polished rice supplied together with the hot water is accommodated for an appropriate period of time.
To perform washing and immersion treatment.
Meanwhile, the hot water supply valve 4 and the drain valve 1c
May be in a closed state, or the drainage valve 1c may be operated to discharge the washing water while the hot water supply valve 4 is operated to supply hot water appropriately.

The appropriate time is, for example, 4 to 5 minutes with 70 ° C. hot water. This is because the water content of the washed and immersed rice thus produced can be made 25 to 30% (a water content suitable for producing good taste in cooked rice).

After the washing and immersion treatment is completed, the polished rice immersed is sent out to the dewatering vessel 8 by operating the delivery valve 1a. The dewatering container 8 is housed in a centrifugal dewatering machine 9 which is an example of the adhering water removing section B by manual or automatic means.

The adhering water removal section B will be described. The dewatering vessel 8 and the centrifugal dehydrator 9 are provided.

The centrifugal dewatering machine 9 includes a center base 13, a dewatering vessel mounting part 11 rotatably mounted on the center base 13 about a vertical axis, and on which the dewatering vessel 8 can be placed. Dehydration motor 1 that rotates section 11 at high speed
0 and a housing 9a for preventing the dewatered water from scattering.

The housing 9a is provided with an upper opening / closing lid 9b through which the dewatering container 8 can be taken in and out, a water collecting tray 9c for draining dehydrated water, and a drain pipe 9d.

The method of using the adhering water removing section B is as follows. The dewatering container 8 containing the milled rice immediately after the immersion
Is fixed to the dewatering vessel mounting part 11, and the dewatering motor 10 is driven to perform a forced motion by high-speed rotation. Therefore, the polished rice immersed in the dewatering container 8 is subjected to centrifugal separation.
Only the excess excess on the surface is removed.

The polished rice from which the adhering water has been removed is taken out of the dehydrating container 8 by manual or automatic means and supplied to the packaging section C.

The packaging section C will be described in detail. A fixed quantity sending device 14 for measuring and sending fixed rice at regular intervals, and a packaging device 15 below it for performing vacuum packaging of the measured white rice. And a preservability improver supply device 16 for supplying a preservability improver such as an oxygen scavenger at the time of the treatment.

The fixed-quantity sending device 14 is provided with a hopper-like milled rice tank 14a and a metering / sending machine 14b which measures the milled rice and sends it down by a predetermined amount.

The packaging device 15 includes a device for performing vacuum processing and a device for sealing the packaging bag 17 in a main body 15a.
The packaging bag 17 is mounted on the packaging bag mounting portion 15b.

The preservability improving agent supply device 16 is located near the metering / sending device 14b, and is installed so as to supply a preservability improving agent such as an oxygen absorber to the packaging device 15 together with the measured milled rice. A storage tank 16a for storing the storability improving agent, and a supply device 16b for appropriately supplying a predetermined amount of the storability improving agent to the packaging device 15 are provided.

The method of using the packaging section C is as follows.
The polished rice from which the adhering water has been removed is once stored in a polished rice tank 14a, and is gradually supplied to the metering / sending device 14b. The weighing / sending machine 14b weighs the polished rice, and sets an appropriately set constant amount (for example, the capacity of the packaging bag 17).
Are sequentially sent to the packaging device 15.

The packaging device 15 is provided with the packaging bag 17 in advance.
Is attached, and the fixed amount of polished rice is received and stored in the packaging bag 17. At that time, a preservability improver such as an oxygen scavenger is supplied by the preservability improver supply device 16,
The rice is stored in the packaging bag 17 together with the fixed amount of milled rice.

The packaging bag 17 is hermetically sealed by removing unnecessary air from the bag by a vacuum processing device.
Thereafter, the sealed packaging bag 17 is removed from the packaging bag mounting portion 15b to complete the washed and soaked rice.

[Another Embodiment] In the above embodiment, the treatment for removing adhering water is performed by forced movement using centrifugal action by high-speed rotation. The exercise may be based on a forced exercise using an exercise combining the above.

Further, in the washing and immersion treatment of the polished rice in the above embodiment, various other embodiments can be considered by adjusting the water temperature by the water heater 6 and adjusting the immersion time by opening and closing the delivery valve 1a. For example, an embodiment in which the immersion time can be shortened by using hot water of 70 ° C. or more, and the use of hot water of 50 ° C. or less causes cracks and body cracks during cleaning and immersion processing. Examples of suppressing occurrence of defective state of polished rice, etc. Examples of restricting the washing immersion time and the temperature of hot water to a certain range so that the grain temperature of polished rice after immersion does not become abnormally high (for example, washing) Example in which warm water at 60 to 80 degrees Celsius is used in the washing and immersion treatment for 3 minutes and 1 minute immersion time. Further, when the above various conditions are not adopted, warm water of 80 ° C. or more and warm water of 60 ° C. or less can be used, and the washing and immersion time can be appropriately selected.

The dewatering container 8 may be configured such that the bottom of the container can be opened and closed so that the stored milled rice can be easily discharged.

In the above embodiment, the case where the vacuum packaging process is performed has been described. However, a so-called deaeration packaging process may be performed to the extent that the air in the packaging bag 17 is pushed out. The oxygen scavenger is particularly effective in the case of this deaeration packaging process. That is, in the deaerated packaging process, the packing bag 17 is pressed in order to prevent the pressurization of the polished rice due to the pressurized state of the packed rice or the pressed state of the polished rice due to the vacuum state in the packaging bag.
This is because a certain amount of air is left when sealing is performed.

In the deaeration packaging process or the vacuum packaging process, the preservability improver can be variously changed.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of an apparatus for producing washed and soaked rice according to the method of the present invention.

[Explanation of symbols]

 A Cleaning and immersion section B Adhered water removal section C Packaging section 8 Dehydration container

Claims (7)

(57) [Claims] 1. A method for producing washed and soaked rice in which polished rice is washed and immersed in warm water to remove water adhering to the polished rice after immersion, the method comprising: A method for producing washed and soaked rice by forcibly exercising polished rice. 2. The method according to claim 1, wherein the temperature of the hot water used for the washing and the immersion treatment is 70 ° C. or higher. 3. The method according to claim 1, wherein the moisture (weight ratio) of the polished rice from which the adhering water has been removed is 25 to 30%. 4. The method for producing washed and immersed rice according to claim 1, wherein the polished rice from which the adhering water has been removed is subjected to deaeration packaging or vacuum packaging. 5. The method for producing washed and immersed rice according to claim 1, wherein the rice is packaged together with an oxygen scavenger in the deaeration packaging process or the vacuum packaging process. 6. An apparatus for manufacturing washed and soaked rice, comprising: a washing and immersing section A for washing and immersing polished rice with warm water; and an attached water removing section B for removing attached water of the polished rice after immersion. An apparatus for manufacturing washed and soaked rice, wherein the adhering water removing section B includes a dehydration container 8 for storing the polished rice after immersion, and a driving device for forcibly moving the same. 7. The apparatus according to claim 6, further comprising a packaging section C for performing deaeration packaging processing or vacuum packaging processing of the polished rice from which the adhering water has been removed.