JP2711644B2 - Washing rice production equipment - Google Patents

Washing rice production equipment

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Publication number
JP2711644B2
JP2711644B2 JP7020276A JP2027695A JP2711644B2 JP 2711644 B2 JP2711644 B2 JP 2711644B2 JP 7020276 A JP7020276 A JP 7020276A JP 2027695 A JP2027695 A JP 2027695A JP 2711644 B2 JP2711644 B2 JP 2711644B2
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JP
Japan
Prior art keywords
rice
water
washed
washing
washing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP7020276A
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Japanese (ja)
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JPH07274857A (en
Inventor
慶二 雑賀
Original Assignee
株式会社東洋精米機製作所
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Publication of JPH07274857A publication Critical patent/JPH07274857A/en
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  • Adjustment And Processing Of Grains (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、洗米を必要とせず水を
入れるだけで直ちに炊飯できる洗い米を製造するための
装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing washed rice which can be cooked immediately by simply adding water without requiring rice washing.

【0002】[0002]

【従来の技術】米は消費者に於いて炊飯の都度、何度も
水を入れ替えて洗っている。これは煩わしいし、炊飯に
時間もかかる。また、研ぎ汁による河川汚染の防止の点
からも、出来れば消費者に渡るまでに洗米処理をしてお
くのが望ましい。従来、水で洗った後、乾燥して得られ
る乾燥洗い米としては、例えば、精米した米を洗い水切
りをし自然乾燥または加熱乾燥したもの(特開昭57−
141257号公報)、精米した米を洗い、冷風または
常温の送風により乾燥したもの(特開昭61−1158
5号公報)、白米を水洗、水切りした後、水分を15%
〜16%に調整したもの(特公昭51−22063号公
報)などが知られている。しかしながら、実際には、一
度洗った後、乾燥させた米で、水を加えて炊いた後もお
いしく食べられる乾燥洗い米は今まで製造されていな
い。洗い米を製造する際の問題点は、米の腐敗と砕粒化
である。即ち、米を洗った場合、その間に吸水して含水
率が高くなり、そのままでは腐敗したり、カビが生えた
りしてしまう。しかし、それを避ける為に洗った米を乾
燥させて吸水により一旦上昇した含水率を下げようとす
ると、米にまず亀裂が入り、更に、砕粒化してしまい、
炊いてもダラダラの飯になり到底飯として通用しないも
のになってしまうのである。このように、精白米は一旦
水に漬けたら、これを乾燥せしめると必ず亀裂が入り、
その内に砕粒化してしまうので、今までに知られている
乾燥洗い米は炊いて食しても美味というものでなく、炊
飯には適さなかった。また、乾燥洗い米と同じく研がず
に炊ける米(無洗米)として、水洗い以外の方法で調製
したものも知られている。代表的なものは、精白米に微
量の水分を添加しながら研米を行い除糠して得られた研
磨米と、精白米をアルコールで洗い乾燥してアルコール
を除いた無洗米(特開昭60−54650号公報)であ
る。しかしながら、前者の研磨米は、米を水の中へ漬け
て洗ったものではないから、米肌の肉眼では見えない、
無数で微細な陥没部に入り込んでいるミクロン単位の糠
粉や、小さな洞穴状の胚芽の抜け跡に入り込んでいる糠
粉群などは除去されずに残っている。このため、研磨米
の洗滌水の濁度数値(社団法人 日本精米工業会の測定
方式による洗米時に於ける洗滌水の濁度数値。本明細書
記載の濁度は全て同じ。)は100P.P.M前後にし
かならず、従って炊飯時に際して、普通の精白米が10
回の洗米すすぎが必要なところを5回ですむという程度
のもので、洗米が不要と云うものではない。また、後者
のアルコールで洗った米は、アルコールを完全に除かね
ばならない上に、炊いた米飯の食味も落ちるという問題
があった。
2. Description of the Related Art Consumers wash rice by replacing water many times each time they cook rice. This is bothersome and time consuming to cook. In addition, from the viewpoint of prevention of river contamination by the sharpening juice, it is desirable to wash rice before reaching consumers if possible. Conventionally, as the dry-washed rice obtained by washing with water and drying, for example, one obtained by washing polished rice, draining the water, and naturally drying or heat-drying (Japanese Patent Laid-Open No. 57-57).
(Japanese Unexamined Patent Publication (KOKAI) No. 141257), rice washed and dried by blowing with cold air or normal temperature
No. 5), after washing and draining white rice, the water content is reduced to 15%.
A composition adjusted to 1616% (Japanese Patent Publication No. 51-22063) is known. However, in practice, dry-washed rice that has been washed once and dried, and that can be eaten delicious even after adding water and cooking has not been produced. The problem in producing washed rice is the spoilage and crushing of rice. That is, when the rice is washed, it absorbs water during that time and the moisture content increases, and as it is, it rots or molds. However, if you try to reduce the water content once increased by water absorption by drying the washed rice to avoid it, the rice will crack first, and further, it will be granulated,
Even if it is cooked, it will be lazy and will not be accepted as rice. In this way, once the polished rice is soaked in water, it will be cracked whenever it is dried.
The dry-washed rice known so far is not delicious even if cooked and eaten, because it is crushed and granulated therein, and is not suitable for cooking rice. Also, as well as dried and washed rice, rice that can be cooked without grinding (washed rice) is also known that is prepared by a method other than washing with water. The typical ones are polished rice obtained by polishing and polishing rice while adding a small amount of water to polished rice, and unwashed rice from which polished rice is washed with alcohol and dried to remove alcohol (Japanese Unexamined Patent Publication No. 60-54650). However, the former polished rice is not immersed in water and washed, so it is not visible to the naked eye of rice skin.
Micron-sized rice flour that has entered into countless fine depressions, and rice flour that has entered small cave-shaped germ traces remain without being removed. For this reason, the turbidity value of the washing water of the polished rice (turbidity value of the washing water at the time of washing the rice according to the measuring method of the Japan Rice Milling Industry Association. The turbidity described in this specification is the same) is 100P. P. M, so when cooking rice, 10 pieces of ordinary polished rice
Only five washings are needed in places where rice washing is necessary, which does not mean that washing is unnecessary. In addition, in the latter case of washing with alcohol, there is a problem that the alcohol must be completely removed and the cooked rice also loses its taste.

【0003】[0003]

【発明が解決しようとする課題】生の米で、然も洗米の
要らない米は、炊飯時の煩雑さをなくすると同時に汚濁
水の防止にも寄与することから、水を加えるだけで直ち
に炊ける「乾燥洗い米」が消費者より要望されて久し
い。そして、上記のように、従来よりこのような乾燥洗
い米を得るための研究がなされているが、炊いた米飯の
食味が優れたものは今までに製造されていない。本発明
はこのような点に鑑み、水洗後も米粒に亀裂が入らず、
しかも、炊いた米飯の食味が低下しない乾燥洗い米を製
造することが出来る洗い米の製造装置を提供することを
目的とするものである。
The raw rice, which does not need to be washed, contributes to the prevention of polluted water while at the same time eliminating the complexity of cooking, so that it can be cooked immediately by simply adding water. "Dried washed rice" has long been requested by consumers. As described above, studies have been made to obtain such dry-washed rice, but cooked rice with excellent taste has not been manufactured so far. In view of such a point, the present invention does not crack rice grains even after washing with water,
Moreover, it is another object of the present invention to provide a washing rice production apparatus capable of producing dry-washed rice that does not reduce the taste of cooked cooked rice.

【0004】[0004]

【課題を解決するための手段】本発明者は、洗米後も亀
裂が入らず、炊いた米飯の食味も優れている洗い米を得
るべく鋭意研究を重ねた結果、精白米の水中での洗滌、
除糠工程及び除水工程を従来とは桁違いに短かい時間内
に行えば、米粒に亀裂が入らず炊飯に適する乾燥洗い米
が得られることを見出し、発明を完成した。即ち、本発
明に係る洗い米の製造装置は、連続洗米機と該洗米機の
次工程に設けた除水装置とを備えた洗い米の製造装置で
あって、前記連続洗米機が、毎分600回転以上で回転
する攪拌体を備え、かつ該連続洗米機に供給される精白
米を前記連続洗米機と除水装置を極短時間で通過させる
ことができ、前記連続洗米機と該除水装置とを通過させ
た洗い米の含水率を16%以下としうる除水能力を備え
ていることを特徴とするものである。上記のような本発
明に係る洗い米の製造装置においては、連続洗米機へ精
白米を供給すると、精白米は該連続洗米機の水中で洗
滌、除糠が行なわれ、更に次工程の除水装置によって強
制的に除水が行なれる。このとき、前記連続洗米機の攪
拌体は毎分600回転以上の高回転で回転しており、極
短時間で充分な洗滌、除糠が行なわれて米肌面にある陥
没部の糠分がほとんど除去された状態で次の除水工程へ
送られ、連続洗米機の水への浸漬から除水までが数分以
内に行なわれる。このため、洗米、除水の間の米粒の主
な吸水部は米粒の表層部であり、除水後の洗い米の米肌
には亀裂が生成しておらず、平均含水率は約13%〜1
6%となる。既に述べたように、洗滌時に水が米粒内部
まで浸透した米は乾燥した時に砕粒化の原因になる亀裂
が生じ、炊いた時においしい米飯とならない。この点、
前記のように、本発明に係る装置を用い、洗滌、除水の
各工程での米粒の吸水部が主に米粒の表面部であるうち
に洗滌と除水を行えば、除水後に亀裂は入らない。この
ような含水状態を保った後の除水時の米粒の平均含水率
(以下、単に「含水率」という。)は16%以下であ
る。吸水部が米粒の表面部である時間巾は、洗滌法、洗
滌条件等によって変わるが数分以内である必要がある。
数分以内とは大体3分〜4分より短い時間であり、好ま
しくは2分〜3分で、更に好ましくは1分以内である。
米粒の含水率が16%をこえないというのは、それ以上
の水分である時は、その後の水分放散により亀裂が生じ
ることと米粒を常温で保存した時に腐敗が防止できる上
限の含水率でもある。含水率の下限を約13%としたの
は、精白米の含水率が通常約13%以上であるからであ
る。尚、本発明で洗い米の「含水率」というのは、付着
水を除いた時の「平均含水率」のことである。含水率は
平均値であるので米粒全体の含水状態が均一かどうかに
は関係なく含水率が上記範囲に含まれるものであればよ
い。尚、含水率は米粒における通常の測定方法(食糧庁
方式)を用いるものである。
Means for Solving the Problems The present inventors have conducted intensive studies to obtain washed rice which has no cracks even after washing and has excellent taste of cooked cooked rice, and as a result, washed rice in water. ,
The inventors have found that if the bran removing step and the water removing step are performed within an order of magnitude shorter than the conventional method, the rice grains will not crack and dry washed rice suitable for cooking rice will be obtained, thus completing the invention. That is, the apparatus for producing washed rice according to the present invention is an apparatus for producing washed rice including a continuous rice washing machine and a water removal device provided in the next step of the rice washing machine, wherein the continuous rice washing machine is operated every minute. The continuous rice washing machine and the water removal device can be provided with a stirring body that rotates at 600 rotations or more, and can pass milled rice supplied to the continuous rice washing machine through the continuous rice washing machine and the water removal device in a very short time. It is characterized by having a water removing ability capable of reducing the water content of the washed rice passed through the device to 16% or less. In the apparatus for producing washed rice according to the present invention as described above, when the polished rice is supplied to the continuous rice washing machine, the polished rice is washed in the water of the continuous rice washing machine, the bran is removed, and the water is removed in the next step. Water is forcibly removed by the device. At this time, the stirring body of the continuous rice washing machine is rotating at a high speed of 600 revolutions per minute or more, and sufficient washing and removing the bran are performed in a very short time, and the bran content of the depressed portion on the rice skin surface is reduced. After being almost removed, it is sent to the next water removal step, and the process from immersion in the continuous rice washing machine to water removal is performed within several minutes. For this reason, the main water-absorbing part of the rice grains during the washing and water removal is the surface layer of the rice grains, and no cracks are formed on the rice skin of the washed rice after water removal, and the average water content is about 13%. ~ 1
6%. As described above, rice that has penetrated into the rice grains during washing has cracks that cause crushing when dried, and does not become delicious rice when cooked. In this regard,
As described above, if the apparatus according to the present invention is used for washing and dewatering while the water-absorbing portion of the rice grains in each step of washing and dewatering is mainly the surface of the rice grains, cracks are formed after the dewatering. not enter. The average water content (hereinafter, simply referred to as "water content") of the rice grains at the time of water removal after maintaining such a water-containing state is 16% or less. The length of time during which the water-absorbing part is the surface of the rice grain varies depending on the washing method, washing conditions and the like, but must be within several minutes.
Within a few minutes is a time shorter than about 3 to 4 minutes, preferably 2 to 3 minutes, and more preferably within 1 minute.
The fact that the water content of the rice grain does not exceed 16% means that when the water content is higher than that, cracks are generated due to the subsequent diffusion of water, and the upper limit of moisture content that prevents rot when the rice grain is stored at room temperature. . The lower limit of the water content is set to about 13% because the water content of the polished rice is usually about 13% or more. In the present invention, the “water content” of the washed rice refers to the “average water content” when the attached water is removed. Since the water content is an average value, it is sufficient if the water content is within the above range regardless of whether the water content of the whole rice grain is uniform. Note that the water content is measured by using a usual measuring method for rice grains (Food Agency method).

【0005】以下、本発明の洗い米の製造装置について
更に詳しく説明する。本発明の洗い米の製造装置におけ
る連続洗米機としては、公知の連続洗米機を用いること
も出来るが一部改造の要がある。即ち、洗米槽を小径と
なし攪拌体の回転数も毎分600回転以上が可能となる
ように改造する必要がある。洗米機で洗滌する場合、そ
の機械の回転数や槽径は処理量との関係で定まるものだ
が、要は供給された精白米が、槽内で充分な洗米に必要
な攪拌回数を受けるだけの時間を経ても、除水後、即ち
付着水分を除かれた時の水分、いわゆる内部含水率が1
6%以下の含水率になっているように洗米機が設計され
ることが重要である。そもそも米は、収穫後、1部の地
域を除き、玄米で含水率15%以下になるよう乾燥する
ことが義務付けられており、それ以上であると検査が通
らないので、通常13%〜14%の含水玄米で流通され
ている。又、調質が行われたとしても、搗精過程で0.
5%〜1%程度の水分発散が避けられないので、結局、
精白米に仕上った時の含水率は14%程度である。その
ように通常の14%前後の含水率の精白米では、腐敗や
発カビのおそれはないが、そのような精白米を、前記の
洗米機で水洗する時に、水洗槽を通過する時の在槽時間
が長いと、その間に米粒内に深く水が浸透し、表面付着
水が除去されても内部含水率が高くなり、腐敗や発カビ
の因となる。そして、それを防ぐために内部水分を乾燥
により除去せしめると、ひずみが生じて砕粒化の原因で
ある亀裂が出来る。そこで、内部水分を除去しなくとも
よいように、表面付着水を除去された時の水分、即ち内
部含水率を16%以下に押える必要があり、その為に
は、洗米時における米粒への給水を出来るだけ防ぐべ
く、洗米機での米粒の在槽通過時間が短くなるよう考慮
して、回転数や槽の大きさを定める必要がある。いずれ
にしても、本発明の目的とする洗い米を製造するには、
連続洗米機の在槽通過時間を従来よりも桁違いに短時間
にしなければならない。尚、在槽時間の設定は、精白米
の吸水性のよしあし、及び洗滌水温によっても勘案する
要がある。即ち、水温が高い程、吸水速度が早くなるの
で在槽通過時間を短くする要がある。要は、連続洗米機
による洗米時に、米粒の内部にはほとんど水が浸透しな
い在槽時間とすることである。このため、本発明では、
連続洗米機の攪拌体の回転数を毎分600回転以上とす
ることで、極く短い在槽通過時間であるにもかかわら
ず、充分な洗米に必要な攪拌が行われ、洗滌と除糠が行
われるようにしている。米粒が連続洗米機の水中で攪拌
される回数が少ないと、必要最小限の洗米効果が得られ
ないから、前記の通り、短かい在槽時間内で、充分な洗
米に必要な数だけ攪拌を行なおうとすれば、洗米機の攪
拌体の回転数を速くする必要がある。つまり、本発明で
は、連続洗米機により洗滌を行う場合、従来とは桁違い
に短かい在槽通過時間内に、充分な洗米に必要な攪拌回
数が行なわれる回転数を設定している。尚、ここに云う
充分な洗米とは、そのまま炊飯した場合、飯が糠臭くな
い程度、即ち、現在一般的に消費者で洗米している程度
を意味するものであり、物理的には精白米表面にある肉
眼では見えない無数の微細な陥没部や、胚芽の抜け跡に
入り込んでいるミクロン単位の糠粉等を、ほとんど除去
している程度、即ち、再びそれを洗米した場合、洗滌水
がほとんど濁らない状態を指すものである。このよう
に、連続洗米機で充分な洗米が行なわれて洗い米が該洗
米機より排出されるが、米粒は大量の洗滌水と共に洗米
機から排出されるので、これを間髪をいれず、直ちに前
記洗米機の後工程に設けた除水装置にて、洗滌水は勿論
のこと、米粒表面に付着している付着水をも除去するの
である。尚、除水装置は、洗滌水及び付着水を除去出来
る機能さえあれば公知の機器でよいが、除水後の洗い米
の含水率が16%以下となるような除水能力を備えてい
ることが必要である。公知の除水装置の中には、吸水の
要因となる洗滌水や付着水の大部分を、瞬間に近い短時
間に除去出来るものがあるから、それを選べばよい。以
上の通りの要領で、精白米を本発明装置の洗米工程と除
水工程を通過させると、精白米は極く短時間に洗滌、除
水が行なわれるので、米粒内に水がほとんど浸透するこ
となく、除水装置より排出されたときには約13%以上
で16%をこえない含水率になっており、長期間室内で
そのまま放置しても表面にはほとんど亀裂も生じず、勿
論砕粒化もしていない乾燥洗い米が得られる。除水した
時の米粒は、付着水を除去したとは云えその表面部は内
部よりも含水率が高いことは想像に易いが、一粒当りの
平均含水率が16%をこえないものになっていると云う
ことは、表面部の含水率の高い部分は極めて薄いもので
あり、それゆえに亀裂さえも生じないのである。つま
り、従来の概念では、洗米すると云うと、即、米粒内部
まで水を吸収し、1粒全体が高含水化すると云うことで
あり、それを除こうとすると、乾燥させる以外になかっ
たのである。然るに、本発明に係る洗い米の製造装置に
よれば、洗米しても高含水化するのは極表面だけで、内
部まで高含水化させないから、1粒全体としては、僅か
に含水率が高くなるだけで、ほとんど元の乾燥した状態
のままになっているのである。それが16%をこえない
含水率と云うことである、尚、除水したての米粒表面部
の水分は間もなく内部に移行し均衡する。
Hereinafter, the apparatus for producing washed rice of the present invention will be described in more detail. As the continuous rice washing machine in the apparatus for producing washed rice of the present invention, a known continuous rice washing machine can be used, but some remodeling is required. That is, it is necessary to remodel the rice washing tank so that the diameter of the washing tank is small and the rotation speed of the stirring body can be 600 rotations or more per minute. When washing with a rice washing machine, the number of revolutions and the tank diameter of the machine are determined by the relationship with the amount of processing, but the point is that the supplied milled rice only receives the number of stirrings necessary for sufficient washing in the tank. Even after a lapse of time, the water content after removal of water, that is, when the adhered moisture is removed, the so-called internal water content is 1
It is important that the rice washer is designed to have a water content of 6% or less. In the first place, except for a part of the area, rice is required to be dried in brown rice to a moisture content of 15% or less except for a part of the area. It is distributed in wet brown rice. In addition, even if the refining is performed, the refining process is performed at 0.
Since about 5% to 1% of water escaping is inevitable,
The water content when finished to polished rice is about 14%. Such normal polished rice having a water content of about 14% does not cause decay or mold generation, but such polished rice is not liable to pass through the washing tank when the polished rice is washed with the rice washing machine. If the tank time is long, water penetrates deeply into the rice grains during that time, and even if water adhering to the surface is removed, the internal moisture content increases, causing rot and mold generation. If the internal moisture is removed by drying in order to prevent this, a strain is generated and a crack, which is a cause of granulation, is formed. Therefore, it is necessary to reduce the water content when the water adhering to the surface is removed, that is, the internal water content to 16% or less so that it is not necessary to remove the internal water content. In order to prevent this as much as possible, it is necessary to determine the rotation speed and the size of the tank in consideration of shortening the passage time of the rice grains in the tank in the rice washing machine. In any case, to produce the washed rice object of the present invention,
The passage time in a continuous rice washing machine must be made orders of magnitude shorter than before. In addition, it is necessary to consider the setting of the storage time depending on the water absorption of the polished rice and the temperature of the washing water. In other words, the higher the water temperature, the faster the water absorption speed, and therefore, it is necessary to shorten the tank passage time. The point is that the rice is kept in the tank during the rice washing with the continuous rice washing machine so that water hardly penetrates into the inside of the rice grains. Therefore, in the present invention,
By setting the rotation speed of the stirrer of the continuous rice washing machine to 600 rotations per minute or more, sufficient stirring for rice washing is performed, even though the passage time in the tank is extremely short, and washing and bran removal are performed. To be done. If the number of times the rice grains are agitated in the water of the continuous rice washing machine is small, the necessary minimum rice washing effect cannot be obtained, so as described above, within a short tank time, agitate only the number necessary for sufficient rice washing. To do so, it is necessary to increase the rotation speed of the stirring body of the rice washing machine. In other words, in the present invention, when washing is performed by a continuous rice washing machine, the number of rotations required to perform the number of times of stirring required for sufficient rice washing is set within a passage time in the tank which is orders of magnitude shorter than in the past. In addition, the sufficient rice washing referred to here means that rice is not bran odor when cooked as it is, that is, it is the degree that rice is generally washed by consumers at present, and it is physically polished rice. To the extent that countless microscopic depressions on the surface that are invisible to the naked eye, micron-scale bran powder that has entered the germ traces, are almost removed, that is, if the rice is washed again, the washing water It refers to a state that hardly becomes cloudy. As described above, the rice is sufficiently washed in the continuous rice washing machine, and the washed rice is discharged from the rice washing machine. The water removal device provided in the subsequent process of the rice washing machine removes not only the washing water but also the attached water attached to the rice grain surface. The water removing device may be a known device as long as it has a function of removing the washing water and the adhering water. The water removing device has a water removing ability such that the water content of the washed rice after the water removal is 16% or less. It is necessary. Some known water removal devices can remove most of the washing water and the attached water that cause water absorption in a short time, almost instantaneously. In the manner described above, when the polished rice is passed through the rice washing step and the water removal step of the apparatus of the present invention, the polished rice is washed and dewatered in a very short time, so that water almost penetrates into the rice grains. When discharged from the water removal device, the water content is about 13% or more and does not exceed 16%. Even if it is left indoors for a long time, almost no cracks are generated on the surface, and of course, it may be crushed and granulated. Not dried and washed rice is obtained. Although it is easy to imagine that the water content of the rice grains after removing water is higher than that of the inside, it is easy to imagine that the adhered water has been removed, but the average water content per grain does not exceed 16%. This means that the high moisture content of the surface is very thin and therefore does not even crack. In other words, according to the conventional concept, washing rice means that water is immediately absorbed into the inside of the rice grains and one whole grain becomes highly water-containing. To remove it, there was no other than drying. . However, according to the apparatus for manufacturing washed rice according to the present invention, even if the rice is washed, the water content is high only on the very surface, and the inside is not made high water content. It just remains almost dry. That is to say that the water content does not exceed 16%. In addition, the moisture on the surface of the freshly removed rice grain will soon migrate to the inside and be balanced.

【0006】一般的に、洗米によって含水してから乾燥
させた米に先ず亀裂が入る原因は、ひずみに弱い特性を
有する米粒が吸水、除水の際、その都度、部分的に膨張
と収縮が生じ、ひずみが出来るからである。然らば、洗
米時や除水時に、ひずみの因子となる膨張と収縮が生じ
ない程度の、僅かの吸水量、及び除水量に押えることが
出来れば、精白米をたとえ水中へ漬けて洗米し、乾燥さ
せても亀裂が生じないことになる。ところで、精白米は
吸水に対して極めて特異な物性があり、先ずそれを理解
した上で対応する要がある。即ち、精白米は水中に浸漬
後、約1時間で飽和点の含水率約30%に到達する。尤
も、これも水温や米質によってかなりの時間の差が生じ
る。しかし、いずれの場合でも浸漬時間と水分上昇の関
係は定率で進行するのではなく、極めて反加速度的に進
行する。従って、浸漬直後、最初の1秒間の吸水量は、
最終の10分間の吸水量に匹敵する程、最初は最も急上
昇、更にその最初の1秒間について分析しても、最後の
0.1秒間の吸水量よりも、最初0.1秒間の吸水量の
方が、はるかに多いことは云うまでもないことである。
このように米の吸水特性は、水に浸漬直後より、時間の
経過と共に吸水速度は加速度的に鈍化する。従って、浸
漬直後は極く短時間でも、かなりの量の吸水をするの
で、乾燥させたときにひずみを生じさせないようにする
ためには、それに到らない僅かの時間内に洗米を完了
し、直ちに除水することである。一方、それに関連して
精白米の洗米特性をも考察する要がある。即ち、精白米
の表面には肉眼では見えない無数で微細な陥没部があ
り、それに入り込んでいる澱粉粒や糠粉を除去するに
は、やはり、どうしても米粒群を水の中にザブンと漬け
て、少なくとも30回以上は攪拌して洗米する必要があ
る。その理由は、糠粉等が入り込んでいる陥没部は、開
口面よりも深みが長く、然も大半はミクロン単位の狭い
開口面だから、その奥の方に入り込んでいる糠粉等を除
去するには、水中に浸して激しく攪拌されている間に、
糠粉等を水に浮遊させて洗い流す以外にない。然もその
ような洗米は、前記の通り、僅かの時間内に行なう必要
がある。そのような考察のもとに構成されている本発明
の製造装置により乾燥洗い米を製造する場合は、洗米工
程で、極く短時間に精白米を水の中に漬けた状態で洗米
して除糠を行ない、直ちに除水工程によって洗滌水と表
面付着水の除水が行われるのである。連続洗米機の水へ
の浸漬から除水完了までの時間は数分以内とし、除水さ
れた時の米の含水率は約13%〜16%をこえない範囲
とする。これにより洗米時に水分が米粒内部に浸透する
ことがなく、砕粒化はおろか米粒に亀裂のない整粒の乾
燥洗い米が得られる。以上のように、本発明の洗い米の
製造装置によれば、製造される洗い米は、連続洗米機に
供給される精白米が約2%の水分を吸収するまでの極く
短時間に、水洗から除水までの各行程を全部処理するこ
とにより製造されるものである。又、本発明に係る製造
装置で製造された洗い米は、これを再び水に漬けて洗米
しても水が濁らず、濁度76P.P.M以下である。
尚、この76P.P.Mと云う濁度数値は、精米工業会
の測定方法に於ける数値の最下限で、これ以下の濁度数
値のもの、即ち、これ以上きれいな洗滌水の場合は測定
不能と云うことになる。尤も、この測定方法で測定出来
ない程の除糠度の高い米と云うものは今まで存在しなか
ったから、この測定方法で充分測定出来たわけである
が、本発明装置で製造される乾燥洗い米は、濁度数値が
余りにも低く過ぎ、この測定方法では到底測定出来な
い。従って、本明細書に於いて、「76P.P.M以
下」と表現しているところは、従来の測定方法では測定
出来ないくらい、桁違いに濁度が低いのだと云うことを
意味しているのであり、かなりの下を意味した「以下」
なのである。 尚、本明細書で、乾燥洗い米と表現して
いる「乾燥」なる意味であるが、米粒を常温で保存して
いても、腐敗したり発カビしない限度、即ち、含水率が
ほぼ16%をこえない含水状態を指すのである。又、米
粒の「亀裂」の意味は、肉眼でも明確に確認出来る亀裂
のことを指すのである。更に、「精白米」の意味である
が、完全精白米は勿論のこと、過剰精白米や中途精白米
をも含めて指すのである。又、「洗米」又は「水洗」の
意味は、米粒群を水中に漬かる程の大量の水の中で攪拌
して洗うことである。
[0006] In general, the first cause of cracks in rice dried after being washed with water is that the rice grains, which have a weak characteristic against strain, partially expand and shrink each time water is absorbed and dewatered. This is because it causes distortion. If the amount of water absorption and water removal can be reduced to a level that does not cause expansion and shrinkage, which is a factor of distortion, at the time of washing and removing water, polished rice is immersed in water and washed. Even when dried, no cracks are formed. By the way, polished rice has a very specific property to water absorption, and it is necessary to understand it first and to respond. That is, the polished rice reaches the saturation point water content of about 30% in about 1 hour after immersion in water. However, this also varies considerably depending on water temperature and rice quality. However, in any case, the relationship between the immersion time and the rise in water does not progress at a constant rate, but progresses at extremely anti-acceleration. Therefore, immediately after immersion, the amount of water absorbed for the first one second is
At first, the steepest rise so as to be equivalent to the amount of water absorbed in the last 10 minutes, and even when analyzed for the first 1 second, the amount of water absorbed in the first 0.1 second was larger than that in the last 0.1 second. It goes without saying that there is much more.
As described above, as for the water absorption characteristics of rice, the water absorption speed decreases at an accelerated rate over time immediately after immersion in water. Therefore, even in a very short time immediately after immersion, a considerable amount of water is absorbed, so that in order not to cause distortion when dried, rice washing is completed within a short time that does not reach it, Immediately remove water. On the other hand, it is also necessary to consider the rice washing characteristics of the polished rice. That is, there are countless fine depressions on the surface of polished rice that are invisible to the naked eye, and to remove the starch granules and bran flour that has entered it, after all, soak the rice grains in the water. It is necessary to stir and wash the rice at least 30 times or more. The reason is that the depressed portion into which bran powder etc. enters is deeper than the opening surface, and since most of it is a narrow opening surface in micron units, it is necessary to remove the bran powder etc. Is immersed in water and stirred vigorously,
There is no alternative but to float the rice flour etc. in water. Needless to say, such rice washing needs to be performed within a short time as described above. When producing dry-washed rice with the production apparatus of the present invention configured based on such considerations, in the rice washing process, the rice is washed in a state where the milled rice is immersed in water in a very short time. After removing the bran, the washing water and the surface adhering water are immediately removed in the water removing step. The time from the immersion of the continuous rice washing machine in water to the completion of water removal is within several minutes, and the water content of rice when water is removed is in a range not exceeding about 13% to 16%. As a result, moisture does not penetrate into the inside of the rice grains at the time of washing the rice, and thus the dried and washed rice without cracks in the rice grains can be obtained. As described above, according to the apparatus for producing washed rice of the present invention, the washed rice to be produced can be produced in a very short time until the milled rice supplied to the continuous rice washing machine absorbs about 2% of water, It is manufactured by completely processing each process from washing to removing water. In addition, the washed rice produced by the production apparatus according to the present invention does not become turbid even when the rice is immersed in water again and washed. P. M or less.
In addition, this 76P. P. The turbidity value of M is the lower limit of the value in the measurement method of the Rice Milling Industry Association. If the turbidity value is lower than this value, that is, if the washing water is more clean, it cannot be measured. However, since there was no rice having a high degree of removal of bran that could not be measured by this measuring method, it could be measured sufficiently by this measuring method. Has a turbidity value that is too low and cannot be measured with this method. Therefore, in the present specification, the expression “76 PPM or less” means that the turbidity is extremely low because it cannot be measured by the conventional measurement method. It means "below"
That's it. In the present specification, the term “dry” means “dry-washed rice”, which means that even if the rice grains are stored at room temperature, they do not rot or mold, that is, the moisture content is about 16%. It refers to a water-containing state that does not exceed In addition, the meaning of "crack" of rice grain refers to a crack that can be clearly confirmed with the naked eye. Furthermore, in the meaning of "polished rice", it refers to not only completely polished rice but also excessively polished rice and intermediate polished rice. Further, the meaning of "washed rice" or "washed with water" is to wash rice grains with stirring in a large amount of water such that the rice grains are immersed in water.

【0007】次に、本発明の乾燥洗い米は略脱気状態で
包装される。乾燥洗い米は水洗前に比べて表面が脆くな
っていて、輸送中などに米粒同士が擦れ合うと、米粒表
面に荒れ、即ち、無数の微細な傷が発生したりして、食
味を低下させる原因となる。この為、包装に関しては米
粒同士が擦れ合わないようにすることが必要である。本
発明の包装方法によってこの目的が達成できる。即ち、
被包された乾燥洗い米と包装材との間に、ほとんど余剰
空隙が存在しない密封包装なので米粒は移動抑制され、
粒々間の位置関係もほとんど変わらない状態を保持す
る。従って、持ち運びの時などに包袋が立てたり寝かし
たりされても、袋内での米粒の擦れ合いが起こらず、荒
れが発生しない。又、保管時、或は輸送時などに外圧が
かかっても、それを内部の米粒にかかることを防げるの
で、肌あれや砕粒が生じない。元来、米と云うものは、
真空袋詰が不活性ガス封入袋詰できないかぎり、通気孔
のある包装材によって被包されている。その理由はいろ
いろあるが、米の品質保持の為にしているのが第一の理
由である。そのような包装形態では、輸送時の持ち運び
の際、包袋が立てたり寝かされたりするが、その都度、
袋内の米粒群のみかけ体積が変化する。即ち包袋を横に
寝かせた時は米粒群が薄平ったくなり、最もそのみかけ
体積が小さく、立てた時は米粒群が下に移動してずんぐ
り太くなり、みかけ体積が大きくなる。そしてみかけ体
積が大きくなった分は袋材に設けた通気孔から入った空
気によって占められる。反対に立てた袋を寝かせた時
は、内部の米粒群が薄平ったく広がり、みかけ体積が小
さくなるので、その余った分の空気が包材の通気孔から
排出される。このように米の包袋では立てたり寝かせた
りする都度、包袋内の米粒群が移動するが、その際米粒
どうしが摺れ合うのである。従来の米でもこのような摺
れ合いは弊害はないとは云えないが乾燥洗い米は、洗米
によって米肌に付着していた糠粉、即ちいわゆる「服」
にあたるものを除去しているだけに、裸の米肌どうしの
摺れ合いによる弊害は大きいところ、本発明の包装方法
では米粒群の最もみかけ体積が小さい状態で包袋内の余
剰空気をだいたい脱気して密封しているので、包袋の向
きが変って、みかけ体積が大きくなろうとしても、その
分の空気が外部から入らないから、結局当初の最もみか
け体積の小さい形態のままで維持出来、その結果、米粒
どうしの摺れ合いが起きないと云うことである。次に、
保管時、或は輸送時などに外圧がかかっても、その圧力
を内部の米粒にかかるのを防げるのは、通常この種の米
の包袋保管の際は横に寝かせて積み上げるが、この際本
発明の包袋方法では前述した通り気密性の包材で、ほと
んど余剰空隙が存在しないように脱気して密封されてい
るが、前記の如く包袋が横に寝かされた時は最もみかけ
体積が小さいから、云いかえると米粒群と包袋材との間
で余剰空間が最も大きいわけである。従ってこの包袋の
上に積み上げた包袋の過重がかかっても、この余剰空間
を占めている空気に圧力がかかり、米粒にはそれほどか
からないと云うことである。なお、本発明に於ける気密
性の包袋材とは、アルミニウム蒸着プラスチックフィル
ムや特殊なプラスチックフィルムなどのような通気性の
全くないものを意味するだけではなく、通気孔などがな
くて通気性が低いという程度の意味でもあり、例えば、
通常のポリエチレンフィルムや、フィルムコーティング
紙袋なども含まれる。又、本明細書に記載する「ほとん
ど余剰空間が存在しないような密封した」との意味は、
一般にある真空包袋のように、大気圧以下に減圧して、
加圧緊締状態にするのではなく、むしろ若干の空隙部が
あるものの、寝かしていた包袋を立てた時に米粒群が下
に移動してずんぐり太くならない程度の脱気と密封度を
指すのである。
Next, the dried and washed rice of the present invention is packaged in a substantially degassed state. The surface of dried and washed rice is more brittle than before washing, and if the rice grains rub against each other during transportation etc., the surface of the rice grains will be rough, that is, countless fine scratches will occur, causing the taste to deteriorate Becomes For this reason, it is necessary to prevent the rice grains from rubbing each other in packaging. This object can be achieved by the packaging method of the present invention. That is,
Between the encapsulated dry-washed rice and the packaging material, rice packaging is suppressed because it is a sealed package with almost no excess voids,
The state where the positional relationship between the particles hardly changes is maintained. Therefore, even if the wrapping bag is set up or laid down when carrying the rice bag, the rice grains in the bag do not rub, and the rice does not become rough. Further, even if an external pressure is applied during storage or transportation, it can be prevented from being applied to the rice grains inside, so that rough skin and broken granules do not occur. Originally, rice was
As long as the vacuum bag cannot be filled with an inert gas filling bag, it is wrapped in a vented packaging material. There are various reasons, but the first is to maintain the quality of rice. In such a packaging form, the wrapper is erected or laid down during transportation, but each time,
The apparent volume of rice grains in the bag changes. That is, when the wrapper is laid on its side, the rice grain group becomes thinner and its apparent volume is smallest, and when it stands up, the rice grain group moves downward and becomes thicker and bulkier. The increase in the apparent volume is occupied by the air that has entered through the ventilation holes provided in the bag material. On the other hand, when the bag is laid up, the rice grains inside the bag spread flat and the apparent volume is reduced, so that the excess air is discharged from the air holes of the packaging material. In this way, every time the rice wrapper is set up or laid down, the rice grains in the wrapper move, and the rice grains rub against each other. It cannot be said that such rubbing does not cause any harm with conventional rice, but dry-washed rice is rice bran powder that has adhered to rice skin by washing rice, that is, so-called “clothes”.
However, the harmful effect of the rubbing between the bare rice skins is great, but with the packaging method of the present invention, the excess air in the wrapper is almost completely removed in the state where the apparent volume of the rice grain cluster is small. Even if the direction of the wrapper changes and the apparent volume becomes large, the air does not enter from the outside, so it is maintained in the form with the smallest apparent volume after all. The result is that rice grains do not rub each other. next,
Even if external pressure is applied during storage or during transportation, etc., this pressure can be prevented from being applied to the inside of the rice grains. In the wrapping method of the present invention, as described above, the air-tight wrapping material is evacuated and sealed so that there is almost no excess space. Since the apparent volume is small, the surplus space between the rice grains and the wrapping material is the largest. Therefore, even if the wrapping bags stacked on the wrapping bag are overloaded, the air occupying the surplus space is pressured, and the rice grains are not so affected. The air-tight wrapping material in the present invention means not only a material having no air permeability such as an aluminum vapor-deposited plastic film or a special plastic film, but also a gas permeable material having no air holes. Is also low, for example,
It also includes ordinary polyethylene films and film-coated paper bags. Further, the meaning of "sealed such that there is almost no excess space" described in the present specification is,
Like general vacuum envelopes, reduce the pressure to below atmospheric pressure,
Rather than pressurizing and tightening, it refers to the degree of deaeration and sealing that rice grains do not move down and become thicker when the wrapper that was lying down is raised, although there are some voids. .

【0008】[0008]

【実施例】【Example】

(実施例1)公知の構造の回転式連続洗米機の攪拌体を
毎分600回転となし、その出口のところに連続して除
水装置を設けてなる水洗行程と除水行程を構成し、該洗
米機に3℃の水を注入し乍ら水分14.2%の昭和60
年和歌山産なぎほの精白米を連続的に毎分1kgペースで
投入する。精白米は洗米機の洗米槽の中で運動している
注入水の中にザブンと入り、水中で攪拌され洗米され乍
ら洗米機の出口より洗滌水と共に排出され、直ちに次行
程の除水装置に入るが、ここで洗滌水及び付着水が強制
的に除去されて除水装置より排出される。その間、即ち
1粒当りの精白米が洗米槽の水に漬かった時から除水装
置より排出されるまでの時間は、45秒(大半は除水行
程での時間が占めている)であった。除水行程から出た
ての米は、水分15.9%になって居り、そのまま30
日間室内に放置していても腐敗も発カビもなく、又10
粒に1粒の割合でしか亀裂が入らず(元の精白米が約5
0粒に1粒の割合で亀裂の入った米であった)、又砕粒
化もなく(当初からの砕粒は除く)、元の整粒群のまま
であった。然もその洗い米を再洗米すると、その洗滌水
は濁度76P.P.M以下であり、洗わずに水だけ入れ
て炊いたが、よく洗米されているので通常の米よりも糠
臭もなく鮮度も落ちずおいしいご飯になった。更に前記
のように処理した洗い米をポリエチレン製の包装袋に入
れ横に寝かせた状態で上下両面から平板により軽く押圧
力を加え、扁平に整形すると共に、袋内の余剰空間のほ
とんどを排出させた上で、密封した、これを手で持ち上
げ、立てたり、斜めにしたりして揺り動かしたが、袋内
での米粒の移動はほとんどなかった。また、これを加重
及び配送試験したが、米粒の荒れは起こさなかった。
(Example 1) A water washing process and a water removing process in which a stirrer of a rotary continuous rice washing machine having a known structure is provided at 600 revolutions per minute and a water removing device is continuously provided at an outlet thereof, While pouring water at 3 ° C. into the rice washing machine, the water of 14.2% in Showa 60
Nagihono polished rice from Wakayama is continuously introduced at a rate of 1 kg per minute. The polished rice enters into the pouring water running in the rice washing tank of the rice washing machine, and is stirred and stirred in the water while being discharged from the outlet of the rice washing machine together with the washing water. Here, the washing water and the attached water are forcibly removed and discharged from the water removing device. During that time, that is, the time from when the polished rice per grain was immersed in the water of the rice washing tank to when it was discharged from the water removal device was 45 seconds (mostly the time in the water removal process). . Rice fresh from the water removal process has a water content of 15.9%,
Even if left indoors for days, there is no rot or mold, and 10
Only one grain cracks in the grains (the original milled rice is about 5
The rice was cracked at a ratio of 0 to 1) and was not crushed (excluding crushed particles from the beginning), and remained the original sized group. When the washed rice was washed again, the washing water became turbid at 76P. P. M or less and cooked with only water without washing, but the rice was washed well, so it was a delicious rice with no smell of bran and less freshness than normal rice. Further, the washed rice treated as described above is put in a polyethylene packaging bag, and while being laid sideways, light pressing force is applied by a flat plate from both upper and lower surfaces to form a flat shape and discharge most of the excess space in the bag. It was then sealed, lifted up by hand, rocked upright or tilted, but there was little movement of the rice grains in the bag. This was subjected to a weighting and delivery test, but no roughening of the rice grains occurred.

【0009】(実施例2)上記洗米機の回転数を毎分1
800回転となし、除水装置を高性能にした除水行程を
構成し、25℃の水を注入し乍ら、水分13.8%の昭
和60年和歌山県産日本晴の精白米を連続的に毎分10
kgペースの速さで投入する。この場合は精白米が洗米槽
の水に漬かった時から、除水装置から排出されるまでの
時間は約5秒であった。除水行程より出たての米は含水
率14.5%になって居り、このまま30日間、室内に
放置していても、腐敗も発カビもなく、又亀裂の入った
米粒は1粒もなく(当初からの亀裂米を除く)、勿論、
砕粒にもならず(当初からの砕粒は除く)元の整粒群の
ままであった。その洗い米を再洗すると濁度76P.
P.M以下であり、洗わずに水だけ入れて炊いても鮮度
もよく通常よりおいしいご飯になった。
(Embodiment 2) The rotation speed of the rice washing machine is set to 1 per minute.
With 800 rotations, a water removal process with a high performance water removal device was constructed, and while pouring water at 25 ° C, Nipponbare polished rice from Wakayama Prefecture with a water content of 13.8% in 1960 was continuously used. 10 per minute
Feed at a pace of kg. In this case, the time from when the polished rice was immersed in the water in the rice washing tank until it was discharged from the water removal device was about 5 seconds. The fresh rice from the water removal process has a moisture content of 14.5%. Even if it is left indoors for 30 days, there is no rot and no mold, and only one cracked rice grain. No (except crack rice from the beginning), of course,
It did not become crushed granules (excluding crushed granules from the beginning) and remained in the original sized group. When the washed rice is washed again, the turbidity is 76P.
P. M or less, and even when cooked with only water without washing, the rice became fresh and delicious.

【0010】(実施例3)本発明の乾燥洗い米を炊いた
ときの食味を評価するためにサンプル1〜4について2
4名のパネルに味覚テストを行った。サンプル米として
は、昭和63年産、あきたこまちの精白米を用い、いず
れも同一原料とした。また、炊飯条件はいずれも同じで
ある。サンプル1(対照品)は通常の方法で洗った後炊
いた米であり、サンプル2(対照品)は熱アルコールで
洗った後乾燥しアルコールを除いた洗い米を炊いたもの
である。サンプル3(対照品)は通常の方法で洗米した
後水切りし乾燥させた米を炊いたものであり、サンプル
4(本発明品)は実施例2の方法で洗米、除水した乾燥
洗い米を炊いたものである。評価方法はサンプル1を基
準にして、それより食味がよいか否かを各パネラーが評
価する方法を用いた。評価点は下記の通りであるが、サ
ンプル1は評価点0とした。 0 サンプル1と同じである。………… 0 0 〃 よりわずかにおいしい…+1 0 〃 より少しおいしい………+2 0 〃 よりかなりおいしい……+3 0 〃 よりたいそうおいしい…+4 0 〃 よりもっともおいしい…+5 0 〃 よりわずかにまずい……-1 0 〃 より少しまずい…………-2 0 〃 よりかなりまずい………-3 0 〃 よりたいそうまずい……-4 0 〃 よりもっともまずい……-5 味覚テストの結果を表1に示す。
(Example 3) Samples 1-4 were evaluated to evaluate the taste when the dried and washed rice of the present invention was cooked.
A taste test was performed on four panels. As a sample rice, polished rice of Akitakomachi, produced in 1988, was used as the same raw material. The cooking conditions are the same. Sample 1 (control product) is rice cooked after washing with a normal method, and sample 2 (control product) is cooked rice washed with hot alcohol and then dried to remove alcohol. Sample 3 (control product) was prepared by washing the rice with a conventional method, then draining and drying the dried rice, and sample 4 (the product of the present invention) was obtained by washing and removing the dried and washed rice by the method of Example 2. It is cooked. The evaluation method used was a method in which each panelist evaluated whether or not the taste was better based on Sample 1. The evaluation points are as follows. Sample 1 was set to evaluation point 0. 0 Same as sample 1. ………… 0 0 わ ず か Slightly more delicious ... + 1 0 少 し Slightly less delicious ……… + 2 0 か な り More delicious …… + 3 0 〃More delicious… + 4 0 〃More delicious… + 5 0わ ず か Slightly worse than… -1 0 少 し Slightly worse than ……… -2 0 か な り Much worse than…… -3 0 〃 Slightly worse… -4 〃 0 も っ と も Worst than… 5 Taste test Table 1 shows the results.

【0011】[0011]

【表1】 [Table 1]

【0012】以上の結果から明らかなごとく、本発明の
乾燥洗い米(サンプル4)は対照品(サンプル2,3)
より大変美味であった。また、通常の方法で洗米、除水
した洗い米よりも本発明の乾燥洗い米の方が炊いたとき
食味が優れている。
As is clear from the above results, the dried and washed rice of the present invention (sample 4) was a control product (samples 2 and 3).
It was much more delicious. In addition, the dry-washed rice of the present invention has a better taste when cooked than the washed rice that has been washed and dewatered by an ordinary method.

【0013】[0013]

【発明の効果】本発明に係る洗い米の製造装置は、次の
(1)〜(4)に示すような効果を有するものである。 (1)本発明に係る製造装置によれば、乾燥洗い米を低
コストで生産することができると共に、それを炊飯する
時には、釜に水と共に入れても濁らず、そのままで炊く
事が出来、長年の願望であった消費者の洗米手間を省く
ことが出来る。又、米肌面に亀裂がなく、米肌面陥没部
の糠分がほとんど除かれているので、炊き上がった飯は
糠の臭みがなく、光沢があり、おいしいご飯である。
又、糠粉をほとんど除去された上記洗い米は、従来の米
よりも鮮度が落ちず、保存性がよい。 (2)本発明に係る製造装置により製造される乾燥洗い
米は、ビタミンが従来の米より多く摂取できる。これ
は、上記洗い米は、短時間洗米だから水溶性ビタミンの
流出が少ないし消費者がそれを洗米をせずに食べられる
からである。 (3)本発明に係る製造装置により洗い米を製造する場
合、洗米歩留りがよいので、社会的に有益である。これ
は、従来の米の洗米は、手作業でも機械式でも高圧でゴ
シゴシとやるので、本来米肌に残って欲しい物質も剥離
され流失してしまうが、本発明に係る製造装置では、洗
米槽の水を高速攪拌して洗米するので、米肌には圧力が
かからず、その結果、食味を低下させる残存糠以外の物
質の剥離が少ないからである。 (4)本発明に係る製造装置により製造される乾燥洗い
米は、水を加えただけで炊くことができるので、研ぎ汁
によって河川が汚染されるということがない。
The apparatus for producing washed rice according to the present invention has the following effects (1) to (4). (1) According to the production apparatus according to the present invention, dry-washed rice can be produced at low cost, and when rice is cooked, it can be cooked as it is without turbidity even if it is put in a pot with water, This eliminates the need for consumers to wash rice, a long-awaited desire. In addition, since the rice skin has no cracks and most of the rice bran depressed portions have been removed, the cooked rice has no odor of rice bran, is glossy, and is delicious rice.
In addition, the washed rice, from which the bran powder has been almost removed, has less freshness than conventional rice and has good storage stability. (2) The dried and washed rice produced by the production apparatus according to the present invention can take more vitamins than conventional rice. This is because the above-mentioned washed rice has a small amount of water-soluble vitamin effluent because it is washed for a short time, and the consumer can eat it without washing the rice. (3) When washing rice is produced by the production apparatus according to the present invention, the rice washing yield is good, which is socially beneficial. This is because conventional rice washing is performed with high pressure both manually and mechanically at high pressure, so that the substance that originally needs to remain on the rice skin is peeled off and washed away.However, in the manufacturing apparatus according to the present invention, the rice washing tank is used. This is because the water is stirred at a high speed to wash the rice, so that no pressure is applied to the rice skin, and as a result, there is little exfoliation of substances other than the remaining bran that lowers the taste. (4) Since the dry-washed rice produced by the production apparatus according to the present invention can be cooked only by adding water, the river is not contaminated by the sharpening juice.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 連続洗米機と該洗米機の次工程に設けた
除水装置とを備えた洗い米の製造装置であって、前記連
続洗米機が、毎分600回転以上で回転する攪拌体を備
え、かつ該連続洗米機に供給される精白米を前記連続洗
米機と除水装置を極短時間で通過させることができ、前
記連続洗米機と該除水装置とを通過させた洗い米の含水
率を16%以下としうる除水能力を備えていることを特
徴とする洗い米の製造装置。
1. An apparatus for producing washed rice comprising a continuous rice washing machine and a water removal device provided in the next step of the rice washing machine, wherein the continuous rice washing machine rotates at 600 rpm or more. And the washed rice supplied to the continuous rice washing machine can be passed through the continuous rice washing machine and the water removing device in an extremely short time, and the washed rice passed through the continuous rice washing machine and the water removing device. Characterized by having a water removal capacity capable of reducing the water content of the rice to 16% or less.
JP7020276A 1995-02-08 1995-02-08 Washing rice production equipment Expired - Lifetime JP2711644B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7020276A JP2711644B2 (en) 1995-02-08 1995-02-08 Washing rice production equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7020276A JP2711644B2 (en) 1995-02-08 1995-02-08 Washing rice production equipment

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP4179248A Division JP2615314B2 (en) 1989-03-14 1992-06-12 Washed rice and its packaging method

Publications (2)

Publication Number Publication Date
JPH07274857A JPH07274857A (en) 1995-10-24
JP2711644B2 true JP2711644B2 (en) 1998-02-10

Family

ID=12022657

Family Applications (1)

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Country Status (1)

Country Link
JP (1) JP2711644B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CO5300421A1 (en) * 2000-03-15 2003-07-31 Satake Eng Co Ltd METHOD OF AND APPARATUS TO MANUFACTURE CEREAL THAT DOES NOT CONTAIN SAVED
JP6703512B2 (en) * 2017-11-14 2020-06-03 株式会社銀シャリ亭 Cooking method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122063A (en) * 1974-08-19 1976-02-21 Fujitsu Ltd Tasokairobanno seizohoho

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