JP4059382B2 - Shochu manufacturing method - Google Patents

Shochu manufacturing method Download PDF

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JP4059382B2
JP4059382B2 JP2002085661A JP2002085661A JP4059382B2 JP 4059382 B2 JP4059382 B2 JP 4059382B2 JP 2002085661 A JP2002085661 A JP 2002085661A JP 2002085661 A JP2002085661 A JP 2002085661A JP 4059382 B2 JP4059382 B2 JP 4059382B2
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buckwheat
shochu
raw material
liquefaction
protease
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JP2003274922A (en
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克弘 境
淳二 柳生
彰二 垂水
康次郎 高橋
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宝ホールディングス株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、そば種子類を主原料とし、香味良好でアルコール収率の高い焼酎を製造する方法に関する。
【0002】
【従来の技術】
そば種子類は、麺類や菓子類などの食品素材として、古くから日本人になじみのある穀類であり、デンプン質やアミノ酸バランスのよい良質のタンパク質を豊富に含み、ミネラルをも適度に含むことから健康食品としても親しまれてきた。ところが、米、麦をはじめ多くの穀類を原料とし、そのデンプン質を糖化、発酵させて得られる酒類は、世界中に多種多様なものがあるが、そば種子類を原料とする酒類は、僅かに日本において、そば焼酎と試験的に生産されているそば酒が認められるに過ぎない。そのそば焼酎にしても、宮崎県で昭和40年代後半に製造が開始されてから、わずか30年程度の歴史しかなく、またその他信州など一部の地域で生産されているのが実状である。したがって、消費者の嗜好が多様化している現在、そば種子類を原料とする、従来にない酒質のそば焼酎などの新たな酒類が求められている。
【0003】
しかしながら、そば種子類を酒類の製造原料として用いる場合、吸水及び糊化によって生じる粘りが問題となることが知られている。つまり、そば粉に含まれるタンパク質は、可溶性タンパク質であるグロブリンとアルブミンが主成分で、そば粉を水に加えて練ると、水に触れた部分の該タンパク質が溶け、非常に高い粘性を示す〔そば・うどん技術教本(第1巻)、そばの基本技術、第46項〜第47項、発行所(株)柴田書店、昭和59年1月20日初版発行〕。したがって、酒類の製造原料として用いられるそば種子類への吸水及び糊化方法としては、次の方法が知られている。そば種子類に対して30〜40%程度の撒水をして、1時間以上吸水させた後50分間程度蒸しを行う方法、及び水浸漬を30分間、水切りを2時間程度行った後40分間程度蒸す方法である。しかし、これらの限定吸水操作を誤るとそば種子類に粘りが発生し、その後の原料の輸送などの原料処理操作が極めて困難になるという問題点を有しており、撒水率の厳守や撒水時の吸水斑の防止、水浸漬時間の厳守など細心の注意が求められる。更に、酒類を製造する方法において液化を行う場合には、高温温水中で長時間のα−アミラーゼ等の酵素を反応させることが常法であるため、その過程で粘りが発生し、かくはんが困難になるという問題が生じる。
【0004】
上述の問題点を解決するために、例えば、特開2000−189084公報に、そば種子類に焙炒処理を施して吸水時の粘りを低下させ、そのそば種子類を用いて酒類を製造する方法が開示されている。また、特開2001−95511公報に、そば種子類を乾燥させた後、蒸気接触処理を行い、そのそば種子類を用いて酒類を製造する方法が開示されている。しかし、これらの方法では、処理後のそば種子類を浸漬する時に粘りを低下させることはできるものの、前処理としての焙炒等の加熱処理がされており、更に仕込前にも再度の加熱処理が必要であった。また、これらの繰り返しの加熱処理による香味への良くない影響も考えられるので、加熱臭が少なくそば原料特有の良好な香味を生かした焼酎の製造方法の開発が求められていた。
【0005】
【発明が解決しようとする課題】
本発明の目的は、上記従来技術にかんがみ、そば種子類を液化処理しても粘りの発生が少なく、また良好で新規な酒質を持つ焼酎の製造方法を提供することにある。
【0006】
【課題を解決するための手段】
本発明を概説すれば、本発明は、原料の少なくとも一部にそば種子類を用いる焼酎の製造方法において、掛原料として、そば種子類を用い、液化工程で得られる液化液、あるいは当該液化工程後の糖化工程で得られる糖化液のいずれかを使用し、かつ当該液化工程ではそば種子類と水とを混合して昇温し、45〜75℃になった時に液化酵素及びプロテアーゼを作用させること、また当該糖化工程では、当該液化液を冷却し、80〜45℃になった時に糖化酵素及びプロテアーゼを作用させることを特徴とする焼酎の製造方法に関する。
【0007】
本発明者らは、そば種子類を原料とし新規な酒質を持つ焼酎を提供すべく、鋭意検討を行った。その結果、そば種子類を液化及び/又は糖化する工程においてプロテアーゼを作用させることによって、粘度の上昇が抑制され、アルコールの収率が上昇し、また新規な酒質を持つ焼酎が得られることを見出し、本発明を完成させた。
【0008】
【発明の実施の形態】
以下、本発明について具体的に説明する。
まず、そば種子類としては、いわゆる日本でそばと言われているものであればよく、例えば通常の普通種であるファゴピラム・エスクレンタム(Fagopyrum・esculentum)が挙げられる。また、そば種子類には、そば殻のついたもの(玄そば)、そば殻を除去したもの(抜きそば)、玄そば又は抜きそばを2〜3分割したもの(引き割りそば)、玄そば又は抜きそばを粉状にしたもの(そば粉)等があるが、本発明に用いるそば種子類はこれらの形態に限定されない。
【0009】
本発明でいうプロテアーゼとは、タンパク質のペプチド結合をランダムに加水分解して種々のペプチドを生成する酵素反応を行う酵素のことをいい、その由来は微生物起源、植物起源、動物起源などさまざまなものがあるが特に限定はされない。例えば、市販のプロテアーゼ製剤として、スミチームTP〔新日本化学工業(株)製〕、ヌクレイシン〔阪急共栄物産(株)製〕、オリエンターゼ22BF〔阪急共栄物産(株)製〕、オリエンターゼONS〔阪急共栄物産(株)製〕、ニュートラーゼ0.8L〔ノボザイムス ジャパン(株)製〕、アルカラーゼ2.4L〔ノボザイムス ジャパン(株)製〕などが挙げられる。本発明では、そば種子類を液化及び/又は糖化する工程において、プロテアーゼを添加して作用させることができる。
【0010】
本発明でいう液化とは、穀類を水と混合して十分に浸漬、吸水させた後に、糊化温度付近で一定時間以上保持し、α化された穀類のデンプン質を液化酵素で溶解させることをいう。ここでいう液化酵素とは例えばα−アミラーゼ剤などのことをいい、その由来は限定されず、また麹そのもので代用してもよい。液化工程でプロテアーゼを作用させる場合において、例えばそば種子類と水を混合して昇温し、45〜75℃になった時にプロテアーゼを0.01〜0.2重量%対原料当り添加することが好ましい。そば種子類は、水と接触した後は、粘りが発生するが、通常の液化酵素のみによる方法ではこの粘りの発生を抑制することが困難であり、上述のようにプロテアーゼを添加することにより、粘度が上昇することを抑え、かくはんを容易にすることができる。
【0011】
本発明でいう糖化とは、上述の液化工程にて生成された液化液に糖化酵素を作用させ、デンプンやデキストリンを単糖類や二糖類まで分解することをいう。ここでいう糖化酵素とは例えばグルコアミラーゼ製剤などであり、その由来は限定されず、また麹そのもので代用してもよい。更にプロテアーゼは、上述の液化液を冷却し、80〜45℃になった時に0.01〜0.2重量%対原料当り添加するとよい。プロテアーゼを添加後の液は、より一層の粘度の低下がみられ、かくはんも容易になった。
【0012】
焼酎の製造方法は、本発明では、上述の方法で得られた液化液又は糖化液を二次醪の原料として用いる。通常、焼酎の製造において、一次醪は米麹や麦麹などの麹を水と混合して仕込み、酵母を添加して増殖させて得ることができる。次に得られた一次醪に、そば種子類を液化した液化液、又はその液化液を糖化した糖化液を添加して発酵させ二次醪を得ることができる。これらの液化液又は糖化液は、少なくとも原料の一部として用いればよく、これらの液化液又は糖化液を添加した後、例えば通常の蒸きょう法で得られた蒸し麦や蒸し米などの原料、焙炒法によって得られた焙炒麦や焙炒米などの原料を添加して発酵させてもよい。本発明の方法による二次醪は、粘性が低くて流動性が良く、したがって発酵が順調に進みやすいので発酵歩合も高くなり、アルコール収率も向上した。次に得られた二次醪を蒸留することによって焼酎を得ることができる。蒸留方法には特に限定はなく、例えば、甲類焼酎を得るための連続蒸留法、乙類焼酎を得るための単式蒸留法、また醪を通常の大気圧下で蒸留する常圧蒸留法、真空ポンプで醪を大気圧より低くして蒸留する減圧蒸留法などがある。本発明の方法で得られた焼酎は、プロテアーゼで処理しない醪から得られた焼酎と比較して、生臭さや過度の加熱による加熱臭等が少なく、そば原料特有の程よい香や香ばしさ、甘く柔らかい味わいを持った焼酎であった。
【0013】
【実施例】
以下に本発明の具体的な実施例を説明するが、本発明がこれらの実施例に限定されるものではない。
【0014】
実施例1
普通種の抜きそば原料を用いてそば焼酎の製造を行った。一次原料には、麦麹を用い、二次掛原料に上述の普通種抜きそば原料を用いた。仕込配合を表1に示す。
【0015】
【表1】

Figure 0004059382
【0016】
一次仕込は、8.0kgの70%精白麦を常法により水浸漬吸水後、水切り、蒸きょう及び放冷して、白麹河内菌〔(株)河内源一郎商店製〕を接種し、麦麹を製造し、この麦麹に汲水9.6L及び酵母を加え、25℃で7日間発酵させ、一次醪を得た。
【0017】
次に二次仕込用の掛原料の液化処理を実施した。液化仕込の配合は表2に示したとおりであり、まず汲水を58℃に昇温保持して、賦活剤(硫酸カルシウム、塩化ナトリウム)、少量の抜きそば(普通種、水分含量13.0%)を投入してよくかくはんし、次にα−アミラーゼ酵素製剤としてタカラチームA〔ナガセケムテックス(株)製〕及びXP−404〔ナガセケムテックス(株)製〕、プロテアーゼ製剤としてスミチームTP〔新日本化学工業(株)製〕を添加し、最後に残りの抜きそばを投入した。全量投入後、58℃で90分間保持することによって、酵素製剤を含んだ温水を十分に吸水させ、その後1℃/3分の速度で昇温して70℃に到達後、30分間保持した。更に1℃/3分の速度で昇温して95℃に到達後、30分間保持した後に冷却して液化液を製造し、掛原料とした(本発明1)。本発明2は、本発明1と同様の液化を行った後、95℃からの冷却途中である60℃で糖化酵素としてタカラチームMT〔ナガセケムテックス(株)製〕を作用させて糖化を行い、同時にスミチームTPを添加して作用させ、得られた糖化液を掛原料としたものである。スミチームTPの添加量は、液化時、糖化時にそれぞれ1/2量ずつとした。また比較例1は、液化時、糖化時にスミチームTP(プロテアーゼ製剤)を使用せずに、本発明1と同様の液化工程にて製造した液化液を掛原料としたものである。対照1は、上述と同様の抜きそば(普通種、水分含量13.0%)を45分間水に浸漬、60分間水切り後、プロテアーゼ等の酵素剤を使用せずに60分間蒸し処理したものを掛原料としたものである。
【0018】
【表2】
Figure 0004059382
【0019】
一次醪に上述の方法で得られた各掛原料を添加して二次仕込を行い、25℃で14日間発酵させて、蒸留前の熟成醪とした。熟成醪の分析値を表3に示す。
【0020】
【表3】
Figure 0004059382
【0021】
得られた熟成醪を減圧蒸留(60torr、中留カットアルコール度数20v/v%)し、得られた蒸留液に冷却ろ過を実施することによりそば焼酎を製造した。得られたそば焼酎の発酵成績、蒸留成績を表4に示す。
【0022】
【表4】
Figure 0004059382
【0023】
得られたそれぞれの焼酎について、アルコール分を25v/v%に調整した後官能検査を行い、その結果を表5に示す。官能検査は4点法(1:優、2:良、3:可、4:不可)で行い、パネラー18名の平均値で表した。
【0024】
【表5】
Figure 0004059382
【0025】
表4より、本発明のそば種子類を液化及び/又は糖化する工程においてプロテアーゼを作用させている本発明1及び本発明2は、プロテアーゼを作用させていない比較例1より醪のアルコール分が高く、発酵歩合も高かった。また表5の官能検査の結果より、本発明1及び本発明2は、比較例1及び対照1より、香、味、総合どの面でも評点が高く、原料特有の程よいそば臭が感じられ、なめらかで丸く、全体でもバランスの良い香味良好な焼酎であった。
【0026】
実施例2
一次原料には、実施例1と同様の麦麹を用い、二次掛原料に普通種抜きそば原料と70%精白米原料を用いた焼酎の製造を行った。仕込配合を表6に示す。
【0027】
【表6】
Figure 0004059382
【0028】
二次仕込用のそば原料について、本発明3には実施例1と同様にスミチームTPを作用させる液化法によって得られた液化物を用い、対照2には液化ではなく蒸きょう法で処理した蒸そばを用いた。また、米原料は浸漬後蒸きょうして二次仕込に用いた。二次仕込後、実施例1と同様に25℃で14日間発酵させて熟成醪を得、更に減圧蒸留を行った後、冷却ろ過して焼酎を得た。得られたそれぞれの焼酎について、実施例1と同様に官能検査を行い、その結果を表7に示す。
【0029】
【表7】
Figure 0004059382
【0030】
表7より、そばを液化する工程でプロテアーゼを作用させた本発明3は、対照2より評点がかなり高く、またソフトで果実様の芳香があり、味のバランスもよい香味良好な焼酎であった。
【0031】
【発明の効果】
本発明により、そば種子類を少なくとも原料の一部に用いる焼酎において、該そば種子類の醪の粘性が低くて扱いやすく、またアルコール収率が高くて、程よい原料特性を持ち、味のバランスがよく香味良好な焼酎を得ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing shochu with good flavor and high alcohol yield using buckwheat seeds as a main raw material.
[0002]
[Prior art]
Buckwheat seeds are cereals that have been familiar to Japanese people for a long time as food materials such as noodles and confectionery, and are rich in high-quality proteins with good starch quality and amino acid balance, and also contain moderate amounts of minerals. It has been popular as a health food. However, there are a wide variety of alcoholic beverages that can be obtained by saccharifying and fermenting starch from rice, wheat, and many other grains, but there are only a few alcoholic beverages that use buckwheat seeds as raw materials. In Japan, only buckwheat shochu and soba sake produced on a trial basis are recognized. Even soba shochu, it has only been around 30 years since its production started in Miyazaki Prefecture in the late 1940s, and it is actually produced in some other areas such as Shinshu. Therefore, now that consumers' tastes are diversified, new liquors such as unprecedented liquor-like buckwheat shochu using buckwheat seeds as a raw material are required.
[0003]
However, it is known that stickiness caused by water absorption and gelatinization becomes a problem when buckwheat seeds are used as a raw material for alcoholic beverages. In other words, the protein contained in buckwheat flour is composed mainly of soluble proteins globulin and albumin. When buckwheat flour is added to water and kneaded, the protein in the part that has come into contact with water dissolves and exhibits a very high viscosity [ Soba / Udon Technical Textbook (Volume 1), Soba Basic Technology, Sections 46-47, Publisher Shibata Shoten Co., Ltd., published on January 20, 1984.] Therefore, the following method is known as a method for absorbing and gelatinizing buckwheat seeds used as a raw material for producing alcoholic beverages. About 30-40% of buckwheat seeds are soaked and absorbed for more than 1 hour, then steamed for about 50 minutes, and immersed in water for 30 minutes, drained for about 2 hours, and about 40 minutes It is a steaming method. However, if these limited water-absorbing operations are mistaken, the buckwheat seeds will become sticky, and the subsequent raw material processing operations such as transportation of raw materials will become extremely difficult. Careful attention is required such as prevention of water absorption spots and strict adherence to water immersion time. Furthermore, when liquefying in a method for producing alcoholic beverages, it is usual to react enzymes such as α-amylase for a long time in high-temperature hot water, so that stickiness occurs in the process and stirring is difficult. The problem of becoming.
[0004]
In order to solve the above-mentioned problems, for example, Japanese Patent Application Laid-Open No. 2000-189084 discloses a method for producing a liquor using the buckwheat seeds by performing roasting treatment on the buckwheat seeds to reduce the stickiness upon water absorption. Is disclosed. Japanese Patent Application Laid-Open No. 2001-95511 discloses a method for drying liquor seeds, performing a steam contact treatment, and producing liquor using the buckwheat seeds. However, in these methods, although the buckwheat seeds after the treatment can be soaked, the stickiness can be reduced, but the heat treatment such as roasting is performed as a pretreatment, and the heat treatment is performed again before the preparation. Was necessary. Moreover, since the bad influence on the flavor by these repeated heat processing is also considered, development of the manufacturing method of the shochu which made use of the favorable flavor peculiar to a buckwheat raw material with few heating odors was calculated | required.
[0005]
[Problems to be solved by the invention]
In view of the above-described prior art, an object of the present invention is to provide a method for producing shochu with good and novel liquor quality, which is less viscous even when buckwheat seeds are liquefied.
[0006]
[Means for Solving the Problems]
Briefly describing the present invention, the present invention relates to a method for producing shochu using buckwheat seeds as at least a part of the raw material, using buckwheat seeds as a hanging raw material, and a liquefied liquid obtained in the liquefaction step or the liquefaction step. Any saccharified solution obtained in the subsequent saccharification step is used, and in the liquefaction step, buckwheat seeds and water are mixed and heated, and when the temperature reaches 45 to 75 ° C., the liquefaction enzyme and protease are allowed to act. In addition, the saccharification step relates to a method for producing shochu , wherein the liquefied liquid is cooled and saccharification enzymes and proteases are allowed to act when the temperature reaches 80 to 45 ° C.
[0007]
The present inventors diligently studied to provide shochu with new liquor quality using buckwheat seeds as a raw material. As a result, by allowing protease to act in the process of liquefaction and / or saccharification of buckwheat seeds, the increase in viscosity is suppressed, the yield of alcohol is increased, and shochu liquor having a novel liquor quality is obtained. The headline and the present invention were completed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be specifically described.
First, the buckwheat seeds may be those so-called buckwheat in Japan, and examples thereof include ordinary ordinary seeds such as Fagopyrum esculentum. In addition, buckwheat seeds include buckwheat husks (gen soba), buckwheat husks removed (buckwheat noodles), ginsoba or boiled noodles (split buckwheat), Alternatively, there are powdered buckwheat noodles (buckwheat flour), but the buckwheat seeds used in the present invention are not limited to these forms.
[0009]
The protease referred to in the present invention refers to an enzyme that performs an enzymatic reaction that randomly hydrolyzes the peptide bond of a protein to produce various peptides, and its origin is various from microbial origin, plant origin, animal origin, etc. There is no particular limitation. For example, as a commercially available protease preparation, Sumiteam TP [manufactured by Shin Nippon Chemical Industry Co., Ltd.], Nukurysin [manufactured by Hankyu Kyoei Bussan Co., Ltd.], orientase 22BF [manufactured by Hankyu Kyoei Bussan Co., Ltd.], orientase ONS [Hankyu] Kyoei Bussan Co., Ltd.], Neutase 0.8L (Novozymes Japan Co., Ltd.), Alcalase 2.4L (Novozymes Japan Co., Ltd.) and the like. In the present invention, protease can be added to act in the step of liquefying and / or saccharifying buckwheat seeds.
[0010]
Liquefaction as used in the present invention means mixing cereals with water and sufficiently immersing and absorbing water, and then maintaining the gelatinized cereal starchy with a liquefaction enzyme for a certain period of time near the gelatinization temperature. Say. The term “liquefying enzyme” as used herein means, for example, an α-amylase agent, the origin of which is not limited, and the koji itself may be substituted. When protease is allowed to act in the liquefaction step, for example, buckwheat seeds and water are mixed and heated, and when the temperature reaches 45 to 75 ° C., 0.01 to 0.2% by weight of protease may be added per raw material. preferable. Buckwheat seeds are sticky after contact with water, but it is difficult to suppress the stickiness by a method using only ordinary liquefaction enzymes. By adding a protease as described above, It is possible to suppress the increase in viscosity and facilitate stirring.
[0011]
The saccharification referred to in the present invention means that a saccharification enzyme is allowed to act on the liquefied liquid produced in the above liquefaction step to decompose starch or dextrin into monosaccharides or disaccharides. The saccharifying enzyme here is, for example, a glucoamylase preparation, and its origin is not limited, and the koji itself may be substituted. Further, the protease is preferably added in an amount of 0.01 to 0.2% by weight per raw material when the above-mentioned liquefied liquid is cooled to 80 to 45 ° C. The liquid after addition of protease was further reduced in viscosity, and stirring became easier.
[0012]
Method of manufacturing shochu, the present invention, the liquefied Ekimata obtained by the above method are use the saccharified solution as a raw material for the secondary moromi. Usually, in the production of shochu, the primary koji can be obtained by mixing koji such as rice koji or wheat koji with water and adding it to the yeast and growing it. The next resultant primary moromi, liquefied liquid liquefied buckwheat seeds, or may be obtained secondary moromi was fermented by adding saccharified solution saccharifying the liquefied solution. These liquefied Ekimata is saccharified solution may be used at least as part of the raw material, these liquefied Ekimata After addition of sugar solution, for example, conventional steam such as obtained steamed wheat and steamed rice in today method You may ferment by adding raw materials, such as roasted wheat and roasted rice obtained by roasting method. The secondary koji according to the method of the present invention has low viscosity and good fluidity, and therefore, fermentation tends to proceed smoothly, so that the fermentation rate is increased and the alcohol yield is improved. Next, shochu can be obtained by distilling the obtained secondary soot. There are no particular limitations on the distillation method, for example, a continuous distillation method for obtaining class A shochu, a single-type distillation method for obtaining class B shochu, an atmospheric distillation method for distilling koji at normal atmospheric pressure, vacuum There is a vacuum distillation method in which soot is distilled at a pressure lower than atmospheric pressure using a pump. The shochu obtained by the method of the present invention has less raw odor, heated odor due to excessive heating, etc., compared to shochu obtained from protease-free koji, moderately scented and fragrant, unique to buckwheat materials, sweet and soft It was a shochu with a taste.
[0013]
【Example】
Specific examples of the present invention will be described below, but the present invention is not limited to these examples.
[0014]
Example 1
Soba shochu was produced using ordinary varieties of raw buckwheat. Wheat straw was used as the primary raw material, and the above-mentioned ordinary seed-free buckwheat raw material was used as the secondary hanging raw material. The charging composition is shown in Table 1.
[0015]
[Table 1]
Figure 0004059382
[0016]
The primary charge is 8.0 kg of 70% white wheat soaked in water using a conventional method, drained, steamed and allowed to cool, and inoculated with Shiraki Kawauchi fungus (manufactured by Kawauchi Genichiro Shoten Co., Ltd.) 9.6 L of pumped water and yeast were added to this wheat straw and fermented at 25 ° C. for 7 days to obtain primary straw.
[0017]
Next, the liquefaction treatment of the hanging raw material for secondary charging was performed. The composition of the liquefaction charge is as shown in Table 2. First, the temperature of the pumped water is maintained at 58 ° C., and the activator (calcium sulfate, sodium chloride), a small amount of extracted buckwheat (ordinary species, water content 13.0). %)), And then α-amylase enzyme preparations Takara Team A (manufactured by Nagase ChemteX Corporation) and XP-404 (manufactured by Nagase ChemteX Corporation), and protease preparations such as Sumiteam TP [ Shin Nihon Chemical Industry Co., Ltd.) was added, and the remaining noodles were added. After the entire amount was added, warm water containing the enzyme preparation was sufficiently absorbed by holding at 58 ° C. for 90 minutes, and then the temperature was raised at a rate of 1 ° C./3 minutes to reach 70 ° C. and then held for 30 minutes. Further, the temperature was raised at a rate of 1 ° C./3 minutes, reached 95 ° C., held for 30 minutes, and then cooled to produce a liquefied liquid, which was used as a hanging raw material (Invention 1). In the present invention 2, after liquefaction similar to the present invention 1, saccharification is carried out by allowing Takara Team MT (manufactured by Nagase ChemteX Corp.) to act as a saccharifying enzyme at 60 ° C. during cooling from 95 ° C. At the same time, Sumiteam TP is added and allowed to act, and the resulting saccharified solution is used as a starting material. The amount of Sumiteam TP added was ½ each for liquefaction and saccharification. Comparative Example 1 uses a liquefied liquid produced in the same liquefaction process as that of the present invention 1 without using Sumiteam TP (protease preparation) at the time of liquefaction or saccharification. Control 1 was prepared by immersing the same buckwheat noodles (ordinary seeds, water content 13.0%) as described above in water for 45 minutes, draining for 60 minutes, and then steaming for 60 minutes without using an enzyme such as protease. It is a hanging raw material.
[0018]
[Table 2]
Figure 0004059382
[0019]
Each hanging raw material obtained by the above-mentioned method was added to the primary koji, followed by secondary charging, and fermented at 25 ° C. for 14 days to obtain an aged koji before distillation. Table 3 shows the analytical values of the ripened pods.
[0020]
[Table 3]
Figure 0004059382
[0021]
The obtained matured koji was distilled under reduced pressure (60 torr, middle-distilled cut alcohol content 20 v / v%), and the obtained distillate was subjected to cooling filtration to produce buckwheat shochu. Table 4 shows the fermentation results and distillation results of the soba shochu obtained.
[0022]
[Table 4]
Figure 0004059382
[0023]
About each obtained shochu, after adjusting alcohol content to 25 v / v%, a sensory test was performed, and the result is shown in Table 5. The sensory test was performed by a four-point method (1: excellent, 2: good, 3: acceptable, 4: impossible), and expressed as an average value of 18 panelists.
[0024]
[Table 5]
Figure 0004059382
[0025]
From Table 4, the present invention 1 and the present invention 2 in which the protease is allowed to act in the step of liquefying and / or saccharifying the buckwheat seeds of the present invention have a higher alcohol content of the straw than the comparative example 1 in which the protease is not acted. The fermentation rate was also high. Further, from the results of the sensory test in Table 5, the present invention 1 and the present invention 2 have higher scores in all aspects of incense, taste, and overall than the comparative example 1 and the control 1, and a moderate buckwheat odor peculiar to the raw material is felt and smooth. It was round and had a well-balanced flavor and good shochu.
[0026]
Example 2
The same wheat straw as in Example 1 was used as the primary raw material, and shochu using the normal seed-free buckwheat raw material and 70% polished rice raw material as the secondary hanging raw material was produced. The charging composition is shown in Table 6.
[0027]
[Table 6]
Figure 0004059382
[0028]
As for the buckwheat raw material for secondary charging, the liquefaction product obtained by the liquefaction method in which Sumiteam TP is allowed to act as in Example 1 is used for the present invention 3, and the control 2 is a steaming method processed by the steaming method instead of liquefaction. Soba was used. The rice raw material was steamed after soaking and used for secondary charging. After secondary charging, fermented at 25 ° C. for 14 days in the same manner as in Example 1 to obtain matured koji, and further distilled under reduced pressure, and then cooled and filtered to obtain shochu. About each obtained shochu, the sensory test was done like Example 1, and the result is shown in Table 7.
[0029]
[Table 7]
Figure 0004059382
[0030]
From Table 7, the present invention 3 in which the protease was allowed to act in the process of liquefying buckwheat was a highly shochu shochu with a considerably higher score than the control 2, soft and fruit-like aroma, and a good flavor balance. .
[0031]
【The invention's effect】
According to the present invention, in shochu using buckwheat seeds as at least a part of the raw material, the buckwheat seeds are low in viscosity and easy to handle, have a high alcohol yield, have appropriate raw material characteristics, and have a balanced taste. A well-flavored shochu can be obtained.

Claims (1)

原料の少なくとも一部にそば種子類を用いる焼酎の製造方法において、掛原料として、そば種子類を用い、液化工程で得られる液化液、あるいは当該液化工程後の糖化工程で得られる糖化液のいずれかを使用し、かつ当該液化工程ではそば種子類と水とを混合して昇温し、45〜75℃になった時に液化酵素及びプロテアーゼを作用させること、また当該糖化工程では、当該液化液を冷却し、80〜45℃になった時に糖化酵素及びプロテアーゼを作用させることを特徴とする焼酎の製造方法。In the method of producing shochu using buckwheat seeds as at least a part of the raw material, either liquefied liquid obtained in the liquefaction step using buckwheat seeds as the hanging raw material or saccharified liquid obtained in the saccharification step after the liquefaction step In the liquefaction step, buckwheat seeds and water are mixed and heated, and when the temperature reaches 45 to 75 ° C., the liquefaction enzyme and protease are allowed to act. In the saccharification step, the liquefaction solution is used. And a saccharification enzyme and a protease are allowed to act when the temperature reaches 80 to 45 ° C.
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