JPH03216150A - Turbidity prevention of extracted solution of tea - Google Patents

Turbidity prevention of extracted solution of tea

Info

Publication number
JPH03216150A
JPH03216150A JP632490A JP632490A JPH03216150A JP H03216150 A JPH03216150 A JP H03216150A JP 632490 A JP632490 A JP 632490A JP 632490 A JP632490 A JP 632490A JP H03216150 A JPH03216150 A JP H03216150A
Authority
JP
Japan
Prior art keywords
black tea
turbidity
tea
oligosaccharides
oligosaccharide
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.)
Pending
Application number
JP632490A
Other languages
Japanese (ja)
Inventor
Katsuhiro Takahara
高原 勝広
Etsuo Igai
猪飼 悦雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Soft Drinks Co Ltd
Original Assignee
Calpis Food Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Calpis Food Industry Co Ltd filed Critical Calpis Food Industry Co Ltd
Priority to JP632490A priority Critical patent/JPH03216150A/en
Publication of JPH03216150A publication Critical patent/JPH03216150A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To readily prevent turbidity occurring in cooling without damaging characteristic flavor and color tone of tea by adding an oligosaccharide to an extracted solution of tea. CONSTITUTION:An extracted solution of tea, for example, is mixed with 1-50wt.% oligosaccharide (e.g. fructooligosaccharide, isomaltooligosaccharide, galactooligosaccharide or isomerized lactose) to prevent turbidity of extracted substance of tea.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、紅茶抽出液の混濁を防止する方法および発生
した混濁を解消する方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for preventing turbidity of black tea extract and a method for eliminating turbidity that has occurred.

〔従来の技術〕[Conventional technology]

紅茶の葉を熱水で抽出した紅茶抽出液いわゆる紅茶は、
そのまま放置しておくと液温か低下するにつれて混濁し
てきて、透明感がなくなることが知られている。この現
象は、紅茶抽出液に含まれているタンニンやカフェイン
が液温か下がるとともに複合体を形成して不溶化するた
めと考えられおり、ミルクダウンとかクリームダウンと
かいう語句でも表現されている。缶入りや壜入りの紅茶
を冷やして飲用しようとする場合や家庭や喫茶店等でア
イスティーとして飲用しようとする場合には、この混濁
は紅茶飲料としての美観を損ねるため、従来より種々の
防止法が検討されている。
Black tea is a black tea extract made by extracting black tea leaves with hot water.
It is known that if left as is, as the temperature of the liquid decreases, it will become cloudy and lose its transparency. This phenomenon is thought to be due to the tannins and caffeine contained in the black tea extract forming a complex and becoming insolubilized as the temperature drops, and is also expressed in terms such as milk down and cream down. When trying to chill black tea in cans or bottles, or when drinking it as iced tea at home or in a coffee shop, various methods have been used to prevent this cloudiness, which impairs the aesthetic appearance of the black tea beverage. is being considered.

すなわち、サイクロデキストリンを添加して混濁の発生
を防止する方法(特開昭63−317044号)、フル
クトースやエタノールを添加して混濁の発生を防止する
方法(特開昭61−187747号)、限外シ戸過膜を
用いて混濁したものを除去する方法(特開昭63−36
745号)、遠心分離により混濁したものを除去する方
法(特公昭52−39920号).pH調整と高温での
加熱により混濁の発生を防止する方法(特開昭63−2
54949号)、酵素処理により混濁したものを分解す
る方法(特開昭50−154462号)等である。
Specifically, there are methods for preventing the occurrence of turbidity by adding cyclodextrin (Japanese Patent Application Laid-Open No. 63-317044), methods for preventing the occurrence of turbidity by adding fructose or ethanol (Japanese Patent Application Laid-open No. 187747-1987), Method for removing turbid substances using an outer filter membrane (Japanese Patent Application Laid-Open No. 63-36
745), a method for removing turbid substances by centrifugation (Japanese Patent Publication No. 52-39920). Method for preventing turbidity by adjusting pH and heating at high temperature (Unexamined Japanese Patent Publication No. 63-2
54949), a method of decomposing turbid substances by enzymatic treatment (Japanese Patent Application Laid-open No. 154462/1983), and the like.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

サイクロデキストリンやフルクトース等を添加する方法
は、工業的にはともかく、一般家庭では簡単には入手で
きず、また添加量を容易には決められないという難点が
ある。また、フルクトースやエタノールは、添加量を5
%以上としなければ効果がなく、エタノールを用いた場
合には清涼飲料というよりもアルコール飲料の範躊に入
るものであり、その意味でも問題である。限外炉過膜や
遠心分離による方法は、その設備が必要であり、設備投
資という面での問題がある。pH調整と高温での加熱に
よる方法は、製造工程の管理が必要であり、酵素処理法
は、酵素自体が高価なことと、酵素の添加や失活にそれ
なりの技術が必要である。
The method of adding cyclodextrin, fructose, etc. has the disadvantage that, although it is industrially possible, it is not easily available in households, and the amount to be added cannot be easily determined. In addition, the amount of fructose and ethanol added should be 5
% or more, it is not effective, and when ethanol is used, it falls into the category of alcoholic beverages rather than soft drinks, which is also a problem. Methods using ultrafilter membranes or centrifugal separation require equipment and are problematic in terms of equipment investment. The method of pH adjustment and heating at high temperature requires control of the manufacturing process, and the enzyme treatment method requires the enzyme itself to be expensive and the addition and deactivation of the enzyme to require certain techniques.

そこで、従来の方法よりも手間がかからず、特別の設備
も必要とせずに紅茶抽出液の混濁を防止もしくは発生し
た混濁を解消する方法を検討したものである。
Therefore, we investigated a method for preventing or eliminating turbidity in black tea extract, which is less time-consuming than conventional methods and does not require special equipment.

〔課題を解決するための手段〕[Means to solve the problem]

上記の!#!題は、紅茶抽出液にオリゴ糖を添加するこ
とにより紅茶抽出液の混濁が防止できることに着目して
、その点について研究を重ねて本発明を完成した。さら
に,冷えて混濁が生じた紅茶抽出液にオリゴ糖を添加す
ることにより混濁が解消する点についても研究を重ねて
本発明を完成した。
above! #! The authors focused on the fact that clouding of black tea extract can be prevented by adding oligosaccharides to black tea extract, and completed the present invention after repeated research on this point. Furthermore, the present invention was completed after repeated research on the point that adding oligosaccharides to black tea extract, which has become cloudy upon cooling, can eliminate the cloudiness.

これに用いるオリゴ糖は、単糖が2個から10個くらい
が連なったものであればよい。オリゴ糖は天然には、大
豆、さとう大根、ごぼう等の各種の野菜に微量に含まれ
ているものであるが、数年前よりオリゴ糖はビフィズス
菌を増殖する糖類として注目されるようになり、天然物
から抽出したり、天然物と同じ構造のものを合成したり
してオリゴ糖として市販されており、フラクトオリゴ糖
、イソマルトオリゴ糖、ガラクトオリゴ糖、異性化乳糖
等は市中で簡単に購入できる。
The oligosaccharide used for this purpose may be one in which about 2 to 10 monosaccharides are linked together. Oligosaccharides are naturally contained in small amounts in various vegetables such as soybeans, sugar radish, and burdock, but a few years ago, oligosaccharides have attracted attention as sugars that promote the growth of bifidobacteria. They are commercially available as oligosaccharides extracted from natural products or synthesized with the same structure as natural products, and fructooligosaccharides, isomalto-oligosaccharides, galactooligosaccharides, isomerized lactose, etc. are easily purchased in the market. can.

以下に混濁を防止する方法を具体的に記載する。A method for preventing turbidity will be specifically described below.

常法に従って紅茶の葉を熱水で抽出して紅茶の葉を除い
て得た紅茶抽出液(いわゆる紅茶)100m1に対して
オリゴ糖を1〜50グラムを添加し、溶解するまで十分
に混合する。この際に数種のオリゴ糖を混合して用いて
も混濁防止の効果には影響がない。オリゴ糖を添加する
時期としては、紅茶抽出液に直接5抽出する紅茶の葉に
あらかじめ混合、あるいは抽出に用いる水にあらかじめ
混合のいずれでも良い。また、甘味を補填する意味で砂
糖を添加したりしても効果を損うことはない。
Add 1 to 50 grams of oligosaccharides to 100 ml of black tea extract (so-called black tea) obtained by extracting black tea leaves with hot water and removing the black tea leaves according to a conventional method, and mix thoroughly until dissolved. . At this time, even if several kinds of oligosaccharides are used in combination, the effect of preventing turbidity is not affected. The timing of adding oligosaccharides may be either by pre-mixing them with the black tea leaves that are to be extracted directly into the black tea extract, or by pre-mixing them with the water used for extraction. Furthermore, even if sugar is added to compensate for the sweetness, the effect will not be impaired.

市販されているオリゴ糖は、液体や粉末のものがあり、
そこに含まれているオリゴ糖含量は各社の製品によって
異なっているため,実際の使用に当ってはあらかじめ混
濁防止に効果のある添加量を確認する必要がある。
Commercially available oligosaccharides are available in liquid or powder form.
The oligosaccharide content contained in the product differs depending on the product of each company, so it is necessary to check in advance the amount added that is effective in preventing turbidity before actual use.

以下に発生した混濁を解消する方法を具体的に記載する
。前述の様にして得た紅茶抽出液(いわゆる紅茶)を空
冷、水冷、水冷等により冷やすと時間の経過とともに混
濁が生じてくる。この混濁した紅茶液100mlに対し
てオリゴ糖を1〜50グラム添加し、溶解するまで十分
に混合することにより混濁が解消し,透明になるととも
に紅茶本来の赤みのある色調となる。この際に数種のオ
リゴ糖を混合して用いても混濁解消の効果には影響がな
い。実際の使用に当っては、混濁防止の場合と同様にあ
らかじめ混濁解消に効果のある添加量を確認する必要が
ある, 以下に試験例実験例で本発明の内容を説明する。
A method for eliminating the turbidity that occurs will be specifically described below. When the black tea extract (so-called black tea) obtained as described above is cooled by air cooling, water cooling, water cooling, etc., it becomes cloudy over time. By adding 1 to 50 grams of oligosaccharide to 100 ml of this cloudy black tea liquid and thoroughly mixing until it dissolves, the cloudiness disappears, and the black tea becomes transparent and has the reddish color tone inherent in black tea. At this time, even if several types of oligosaccharides are used in combination, the effect of eliminating turbidity is not affected. In actual use, as in the case of preventing turbidity, it is necessary to confirm in advance the amount of addition that is effective in eliminating turbidity.The contents of the present invention will be explained below using test examples.

(試験例1) 実施例1と同様にして得た紅茶液を7個のビーカーに1
00gづつに分注して、大豆オリゴ糖を0、0.5、1
、5、10、25、50g添加して混合したものを冷蔵
して翌日に肉眼により観察した。その結果を表1に示し
た。大豆オリゴ糖は、実施例1と同じものを用いた。
(Test Example 1) Black tea liquid obtained in the same manner as in Example 1 was placed in 7 beakers.
Dispense soybean oligosaccharides into 0, 0.5, 1
, 5, 10, 25, and 50 g were added and mixed, and the mixture was refrigerated and observed with the naked eye the next day. The results are shown in Table 1. The same soybean oligosaccharide as in Example 1 was used.

表1 ++:かなり混濁して沈殿析出 +:混濁 ±:わずかに混濁 一二混濁していない 〔実施例〕 以下に実施例を記載する。実施例1〜実施例3では熱水
で抽出した紅茶液に各種のオリゴ糖を添加したものを、
実施例4では熱水で抽出した紅茶液を冷やしたものにオ
リゴ糖を添加したものを、比較例1では蔗糖を添加した
ものを示した。
Table 1 ++: Considerably cloudy and precipitated +: Cloudy ±: Slightly cloudy - Not turbid [Examples] Examples are described below. In Examples 1 to 3, various oligosaccharides were added to black tea liquid extracted with hot water,
In Example 4, oligosaccharide was added to a cooled tea liquid extracted with hot water, and in Comparative Example 1, sucrose was added.

(実施例1) セイロン紅茶25gを沸騰させた蒸留水1000mlに
入れて2分間浸漬してから、茶こしで紅茶の葉を取除い
て、糖度(R.Brix)1.2、pH5.2の紅茶液
を864g得た。この紅茶液100gに大豆オリゴ糖5
gを添加して混合したものを冷蔵して翌日に肉眼により
観察したところ、混濁は認められなかった。ここに用い
た大豆オリゴ糖は、カルピス食品工業株式会社が販売し
ている大豆オリゴ糖シロップ(固形分77%、オリゴ糖
はシロップ中の26%)である。
(Example 1) 25 g of Ceylon black tea was soaked in 1000 ml of boiled distilled water for 2 minutes, and then the black tea leaves were removed with a tea strainer to obtain black tea with a sugar content (R.Brix) of 1.2 and a pH of 5.2. 864g of liquid was obtained. 5 soybean oligosaccharides in 100g of this black tea liquid
When the mixture was refrigerated and visually observed the next day, no turbidity was observed. The soybean oligosaccharide used here is soybean oligosaccharide syrup (solid content 77%, oligosaccharide content 26% in the syrup) sold by Calpis Foods Industries, Ltd.

(実施例2) 実施例1で得た紅茶液100gにイソマルトオリゴ糖5
gを添加して混合したものを冷蔵して翌日に肉眼により
観察したところ、混濁はほとんど認められなかった。こ
こに用いたイソマルトオリゴ糖は、昭和産業株式会社が
販売しているシロップ状のイソマルト500 (固形分
75%、オリゴ糖はシロップ中の34%)である。
(Example 2) Add 5 isomalto-oligosaccharides to 100 g of black tea liquid obtained in Example 1.
When the mixture was refrigerated and observed with the naked eye the next day, almost no turbidity was observed. The isomaltooligosaccharide used here is syrup-like isomalt 500 (solid content 75%, oligosaccharide 34% in syrup) sold by Showa Sangyo Co., Ltd.

(実施例3) 実施例1で得た紅茶液100gにフラクトオリゴ15g
を添加して混合したものを冷蔵して翌日に肉眼により観
察したところ、混濁はほとんど認められなかった。ここ
に用いたフラクトオリゴ糖は、明治製菓株式会社が販売
しているシロップ状のメイオリゴG(固形分75%、オ
リゴ糖はシロップ中の41%)のものである。
(Example 3) Add 15 g of fructooligo to 100 g of black tea liquid obtained in Example 1.
When the mixture was refrigerated and observed with the naked eye the next day, almost no turbidity was observed. The fructooligosaccharide used here is syrup-like Mayoligo G (solid content 75%, oligosaccharide 41% in syrup) sold by Meiji Seika Co., Ltd.

(実施例4) 実施例1で得た紅茶液を冷蔵して混濁させ、その混濁し
た紅茶液100gに大豆オリゴ糖5gを添加して十分に
混合したところ、混濁は認められなくなった。ここに用
いた大豆オリゴ糖は、実施例1と同じものを用いた。
(Example 4) The black tea liquid obtained in Example 1 was refrigerated to become cloudy, and when 5 g of soybean oligosaccharide was added to 100 g of the cloudy black tea liquid and thoroughly mixed, no clouding was observed. The soybean oligosaccharide used here was the same as in Example 1.

(比較例1) 実施例1で得た紅茶液longに蔗?1f5gを添加し
て混合したものを冷蔵して翌日に肉眼により観察したと
ころ、著しく混濁していた。
(Comparative Example 1) Added sweet potato to the black tea liquid obtained in Example 1? When 5 g of 1f was added and mixed, the mixture was refrigerated and observed with the naked eye the next day, and it was found to be extremely cloudy.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、紅茶抽出液にオリゴ糖を添加すること
により紅茶抽出液を冷やした際に発生する混濁を、紅茶
本来の風味と色調を損うことなしに容易に防止すること
ができる。
According to the present invention, by adding oligosaccharides to the black tea extract, turbidity that occurs when the black tea extract is cooled can be easily prevented without impairing the original flavor and color tone of the black tea.

また、オリゴ糖を添加せずに紅茶抽出液を冷やして発生
する混濁を、オリゴ糖を添加することにより紅茶本来の
風味と色調を損うことなしに容易に解消することができ
る。
Further, by adding oligosaccharides, the turbidity that occurs when black tea extract is cooled without adding oligosaccharides can be easily eliminated without impairing the original flavor and color tone of black tea.

Claims (2)

【特許請求の範囲】[Claims] (1)紅茶抽出液にオリゴ糖を添加することを特徴とす
る紅茶抽出液の混濁防止法。
(1) A method for preventing turbidity of black tea extract, which is characterized by adding oligosaccharides to black tea extract.
(2)混濁した紅茶抽出液にオリゴ糖を添加することを
特徴とする紅茶抽出液の混濁解消法。
(2) A method for eliminating cloudy black tea extract, which comprises adding oligosaccharides to the cloudy black tea extract.
JP632490A 1990-01-17 1990-01-17 Turbidity prevention of extracted solution of tea Pending JPH03216150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP632490A JPH03216150A (en) 1990-01-17 1990-01-17 Turbidity prevention of extracted solution of tea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP632490A JPH03216150A (en) 1990-01-17 1990-01-17 Turbidity prevention of extracted solution of tea

Publications (1)

Publication Number Publication Date
JPH03216150A true JPH03216150A (en) 1991-09-24

Family

ID=11635190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP632490A Pending JPH03216150A (en) 1990-01-17 1990-01-17 Turbidity prevention of extracted solution of tea

Country Status (1)

Country Link
JP (1) JPH03216150A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003000145A (en) * 2001-06-22 2003-01-07 Matsutani Chem Ind Ltd Tea beverage
JP2003339318A (en) * 2002-05-28 2003-12-02 Sanei Gen Ffi Inc Tea drink stable in long period preservation and method for producing the same
JP2019165663A (en) * 2018-03-23 2019-10-03 不二製油株式会社 Precipitation inhibitor for tea beverage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003000145A (en) * 2001-06-22 2003-01-07 Matsutani Chem Ind Ltd Tea beverage
JP4674319B2 (en) * 2001-06-22 2011-04-20 松谷化学工業株式会社 Tea drink production method
JP2003339318A (en) * 2002-05-28 2003-12-02 Sanei Gen Ffi Inc Tea drink stable in long period preservation and method for producing the same
JP2019165663A (en) * 2018-03-23 2019-10-03 不二製油株式会社 Precipitation inhibitor for tea beverage

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