JP2006320246A - Tea extract - Google Patents

Tea extract Download PDF

Info

Publication number
JP2006320246A
JP2006320246A JP2005146131A JP2005146131A JP2006320246A JP 2006320246 A JP2006320246 A JP 2006320246A JP 2005146131 A JP2005146131 A JP 2005146131A JP 2005146131 A JP2005146131 A JP 2005146131A JP 2006320246 A JP2006320246 A JP 2006320246A
Authority
JP
Japan
Prior art keywords
tea
tea extract
extract
beverage
content
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
JP2005146131A
Other languages
Japanese (ja)
Inventor
Tomoyoshi Yamaguchi
智佳 山口
Hiroshi Hojo
寛 北條
Takeyuki Suzuki
壯幸 鈴木
Kensuke Yagi
健介 八木
Fumio Nanjo
文雄 南条
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.)
Mitsui Norin Co Ltd
Original Assignee
Mitsui Norin 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 Mitsui Norin Co Ltd filed Critical Mitsui Norin Co Ltd
Priority to JP2005146131A priority Critical patent/JP2006320246A/en
Publication of JP2006320246A publication Critical patent/JP2006320246A/en
Pending legal-status Critical Current

Links

Abstract

<P>PROBLEM TO BE SOLVED: To provide tea extract added to tea beverage in a production process so as not to require any specific production process or novel production equipment, easily present floc-inhibiting effect and provide favorable flavor and stability in color tone of the appearance thereof. <P>SOLUTION: The tea extract is obtained through controlling the relation between aluminum and strictinin so as to have an appropriate value, and makes it possible to inhibit floc occurrence during storage and provide favorable flavor and stability in color tone of the appearance thereof. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、フロック抑制効果を有し、茶飲料に添加した際に外観の色調安定性を供し、かつ良好な風味を示す茶抽出物に関する。 The present invention relates to a tea extract that has a floc-inhibiting effect, provides appearance color stability when added to a tea beverage, and exhibits a good flavor.

お茶に含まれる苦渋味成分である茶カテキンは抗う触作用、血圧上昇抑制作用、体脂肪抑制作用等の生理機能を有することが明らかにされ、注目を集めている。飲料を摂取する時にこうした茶カテキンの生理効果をより享受するために、茶抽出物を添加して、高濃度の茶カテキンを含有させた飲料を製造する方法なども報告されている(特許文献1参照)。茶抽出物にはカフェインの少ないタイプや、カテキンを高濃度に含むタイプなど、様々なバリエーションが市販されており、手軽に飲料の成分をコントロールできる点で飲料の製造に欠かせない存在となってきている。 Tea catechin, which is a bitter and astringent component contained in tea, has been shown to have physiological functions such as antidepressant action, blood pressure increase inhibitory action, and body fat inhibitory action, and has attracted attention. In order to further enjoy the physiological effects of tea catechins when ingesting beverages, a method of producing a beverage containing a high concentration of tea catechins by adding a tea extract has been reported (Patent Document 1). reference). There are many variations of tea extract, such as those with less caffeine and those with high concentrations of catechin, which are indispensable for beverage production in terms of easy control of beverage ingredients. It is coming.

一方、茶飲料を長期間保存すると、次第にフロック(綿状浮遊物及び/又は沈殿物)が観察されるようになる。フロックは、時間の経過と共に、徐々にその大きさと量が増し、好ましくない濁りを有する外観を与えるだけでなく、このフロック発生現象はその形状や大きさから微生物による汚染と誤認されやすい等、茶飲料の好ましくない経時的変化として扱われている場合が多い。このフロックの発生は茶飲料全般にみられるが、緑茶において特に起こりやすい現象である。このフロックの本体は分子量が2万以上の水溶性多糖成分であるとの報告(非特許文献1参照)や、茶成分の一つであるストリクチニンが加熱によってエラグ酸に分解され、このエラグ酸がタンパク質等と結合することによって形成されるとの報告(特許文献2参照)がある。 On the other hand, when the tea beverage is stored for a long period of time, flocs (cotton-like floats and / or precipitates) are gradually observed. The flocs gradually increase in size and amount over time, giving them an unpleasant turbid appearance, and the floc occurrence phenomenon is easily misidentified as microbial contamination due to its shape and size. Often treated as an undesired change in beverage over time. The occurrence of this floc is found in tea beverages in general, but is a phenomenon that is particularly likely to occur in green tea. The main body of this floc is reported to be a water-soluble polysaccharide component having a molecular weight of 20,000 or more (see Non-Patent Document 1), and strictinin, one of the tea components, is decomposed into ellagic acid by heating. There is a report (refer to Patent Document 2) that it is formed by binding to a protein or the like.

茶飲料のフロック発生を抑制、或いは防止する方法としては例えば、フロック発生の原因物質と考えられている高分子多糖を酵素処理により分解する方法、原因物質や沈殿を限外濾過やケイ藻土濾過によって物理的に取り除く方法、フロック発生を抑制する成分を添加する方法、またはフロック発生の原因となる成分の含有量が少ない原料を使用する方法などの従来技術が開示されている。 Examples of methods for suppressing or preventing floc generation in tea beverages include a method of degrading a high molecular polysaccharide, which is considered to cause floc, by enzymatic treatment, and ultrafiltration or diatomaceous earth filtration of causative substances and precipitates. Conventional methods such as a method of physically removing the flocs, a method of adding a component that suppresses the occurrence of flocs, or a method of using a raw material with a low content of components that cause flocs are disclosed.

これら従来技術の具体例を挙げれば、緑茶の温水抽出液を通常の遠心分離または濾過により清澄化処理した液にアスコルビン酸またはその塩を添加し、ヘミセルラーゼ活性を有する酵素で処理し、必要により加熱殺菌処理する緑茶飲料の製造方法(特許文献3参照)、緑茶又は生鮮乃至乾燥茶葉を抽出して得た水溶性茶成分を限外濾過法により分画し、分子量約1万以上の高分子成分をほぼ除去することによる清澄緑茶飲料の製造方法(特許文献4参照)、フコイダン含有物を茶飲料および茶抽出液に添加することにより、茶飲料保存時に発生する綿状沈殿物(フロック)の発生を防止する方法(特許文献5参照)、容器詰緑茶飲料中のアルミニウムイオンと水不溶性固形分の量を調整する方法(特許文献6参照)、容器詰緑茶飲料中の非エピ体カテキン類とエピ体カテキン類の比率、並びにアルミニウムイオンと珪素イオンの含有量を調整する方法(特許文献7参照)、茶飲料製造時のストリクチニン含有量を調整することにより製造後に発生するフロックを未然に防止する方法(特許文献2参照)などが提案されている。
特開2002−272373号公報 特開2003−235452号公報 特開平8−228684号公報 特開平4−45744号公報 特開2000−116327号公報 特開2004−180574号公報 特開2004−159665号公報 竹尾忠一、ソフトドリンクス技術資料、1号、1993年、P85
Specific examples of these prior arts include adding ascorbic acid or a salt thereof to a solution obtained by clarifying a warm water extract of green tea by ordinary centrifugation or filtration, treating with an enzyme having hemicellulase activity, and if necessary. A method for producing a green tea beverage to be heat-sterilized (see Patent Document 3), a water-soluble tea component obtained by extracting green tea or fresh or dried tea leaves by ultrafiltration, and a polymer having a molecular weight of about 10,000 or more A method for producing a clear green tea beverage by substantially removing the components (see Patent Document 4), and adding a fucoidan-containing material to a tea beverage and a tea extract, so that the flocculent precipitate (floc) generated during storage of the tea beverage A method for preventing the occurrence (see Patent Document 5), a method for adjusting the amount of aluminum ions and water-insoluble solids in a packaged green tea beverage (see Patent Document 6), a non-evaporation in a packaged green tea beverage A method for adjusting the ratio of body catechins and epi-catechins, and the content of aluminum ions and silicon ions (see Patent Document 7), flocs generated after production by adjusting the strictinin content during tea beverage production A method for preventing it (see Patent Document 2) has been proposed.
JP 2002-272373 A JP 2003-235451 A JP-A-8-228684 JP-A-4-45744 JP 2000-116327 A JP 2004-180574 A JP 2004-159665 A Takeo Teiichi, Soft Drinks Technical Data, No. 1, 1993, P85

茶飲料におけるフロックの発生を抑制する方法に関しては、上記のような様々な方法が開示されている。しかし、これらの方法は、少なくとも次のような欠点を有する。例えば、限外濾過処理など、特別な製造工程を設ける方法では、新規な製造設備が必要となるのに加え、工程が煩雑になる。また、酵素処理による方法では、酵素反応に時間がかかり、カテキンなどの酸化による着色など、外観の色調安定性に大きな障害を与える。 Various methods as described above have been disclosed regarding methods for suppressing the occurrence of flocs in tea beverages. However, these methods have at least the following drawbacks. For example, in a method of providing a special manufacturing process such as an ultrafiltration process, a new manufacturing facility is required and the process becomes complicated. In addition, in the method using the enzyme treatment, the enzyme reaction takes time, and the color stability of the appearance is greatly hindered such as coloring due to oxidation of catechin and the like.

さらに、濾過処理等によって特定の内容成分を除去する方法、酵素処理によって内容成分を変化させる方法、フコイダン含有物を添加する方法では、茶浸出液が本来有している成分のバランスを乱すことになるため、風味への影響が避けられない。特に、高分子多糖類はフロックや変色の原因となる可能性がある一方で、茶飲料のボディー感を構成し、重厚な風味を形成する重要な働きを持っており、これを分解または除去する方法では茶飲料独特の旨みや風味を著しく損ない、保存安定性を付与する目的を達成しても本格的な茶とは異なるものになってしまうという問題がある。容器詰茶飲料中のアルミニウムイオン濃度と水不溶性固形分の濃度をコントロールする方法、容器詰緑茶飲料中の非エピ体カテキン類とエピ体カテキン類の比率、並びにアルミニウムイオンと珪素イオンの含有量をコントロールする方法、ストリクチニン含有量を指標に茶葉を選定する方法では、フロックの原因となる他成分の関与を考えると確実な方法とは言い難く、またこれらの方法では必然的に使用できる茶葉が限定されてしまうため、味覚を主眼においた茶葉の選択ができず、本来の目的である優れた茶の風味を有する茶飲料を提供するという目的を達成することが困難となる。以上のように、従来開示されている技術では、フロック発生の抑制、外観の色調の安定性と茶本来の風味を保持という点を十分に満足させうるものはなかった。 Furthermore, the method of removing a specific content component by filtration treatment, the method of changing the content component by enzyme treatment, or the method of adding a fucoidan-containing material disturbs the balance of components originally contained in the tea infusion. Therefore, the influence on the flavor is inevitable. In particular, high-molecular polysaccharides can cause floc and discoloration, but they constitute the body feeling of tea drinks and have an important function of forming a heavy flavor, which is decomposed or removed. In the method, there is a problem that the taste and flavor peculiar to tea beverages are remarkably impaired, and even if the purpose of imparting storage stability is achieved, it becomes different from full-fledged tea. Methods for controlling the concentration of aluminum ions and water-insoluble solids in packaged tea beverages, the ratio of non-epi-catechins and epi-catechins in packaged green tea beverages, and the content of aluminum ions and silicon ions The method of controlling and the method of selecting tea leaves using the strictinin content as an index are not reliable methods considering the involvement of other ingredients that cause flocs, and these methods inevitably limit the available tea leaves. Therefore, it is difficult to select a tea leaf with a focus on taste, and it is difficult to achieve the purpose of providing a tea beverage having an excellent tea flavor, which is the original purpose. As described above, none of the conventionally disclosed techniques can sufficiently satisfy the points of suppressing the occurrence of flocs, maintaining the stability of the color tone of the appearance, and maintaining the original flavor of tea.

本発明者らは上記目的を達成すべく鋭意検討を重ねた結果、アルミニウム濃度とストリクチニン濃度の関係をバランス良くコントロールすることによって、茶飲料に配合した際に、保存時のフロック生成を抑制でき、かつ茶由来の優れた風味と外観の色調安定性を示す茶抽出物を見出し、本発明を完成するに至った。   As a result of intensive studies to achieve the above object, the present inventors have controlled the relationship between the aluminum concentration and the strictinin concentration in a well-balanced manner, so that when blended in a tea beverage, it is possible to suppress the generation of flocs during storage, And the tea extract which shows the outstanding flavor derived from tea and the color stability of an external appearance was discovered, and it came to complete this invention.

すなわち、本発明の茶抽出物は請求項1に記載の通り、
次の成分(A)、(B):
(A)アルミニウム0.2〜1.0重量%、
(B)ストリクチニン
を含有し、成分(A)の含有量(重量%)と成分(B)の含有量(重量%)からなる次式
(A−0.65)+(B−0.07)/16=Cとした時に
Cが0.25以下であることを特徴とするものである。
That is, the tea extract of the present invention is as described in claim 1,
The following components (A) and (B):
(A) 0.2 to 1.0% by weight of aluminum,
(B) Containing strictinin, and comprising the content (% by weight) of component (A) and the content (% by weight) of component (B), the following formula (A−0.65) 2 + (B−0.07 ) C when the 2/16 = C is characterized in that it is 0.25 or less.

また、請求項2に記載の通り、請求項1記載の茶抽出物においてストリクチニンの含有量が1.2重量%以下であることを特徴とするものである。 Moreover, as described in claim 2, in the tea extract of claim 1, the content of strictinin is 1.2% by weight or less.

また、請求項3に記載の通り、請求項1乃至2記載の茶抽出物においてタンニン含有量が50重量%以下であることを特徴とするものである。 Moreover, as described in claim 3, the tannin content in the tea extract according to claim 1 or 2 is 50% by weight or less.

また、請求項4に記載の通り、請求項1乃至3記載の茶抽出物において緑茶を原料とすることを特徴とするものである。 Moreover, as described in claim 4, green tea is used as a raw material in the tea extract according to claims 1 to 3.

また、請求項5に記載の通り、請求項1乃至4記載の茶抽出物において茶飲料に添加されるものであることを特徴とするものである。 Further, as described in claim 5, the tea extract according to claims 1 to 4 is added to a tea beverage.

また、本発明は請求項6に記載の通り、請求項1乃至5記載の茶抽出物を添加し、製造された飲料であることを特徴とするものである。
本発明の茶飲料の製造方法は、請求項7に記載の通り、請求項1乃至5記載の茶抽出物を添加することを特徴とするものである。
Moreover, this invention is characterized by being the drink manufactured by adding the tea extract of Claims 1 thru | or 5 as described in Claim 6.
The method for producing a tea beverage of the present invention is characterized in that, as described in claim 7, the tea extract according to claims 1 to 5 is added.

本発明の茶抽出物を茶飲料に添加すると、茶の優れた風味を有しながら、フロック発生を抑制することができ、外観の色調も安定に保たれる。これまでに実施されている茶飲料に茶抽出物を添加する試みとしては、単に茶に含まれるカテキン類の優れた生理作用を効果的に発現させることを目的としており、茶飲料のフロックの発生を抑制する手段として茶抽出物が用いられた例は全く見当たらない。   When the tea extract of the present invention is added to a tea beverage, the occurrence of floc can be suppressed while maintaining the excellent flavor of tea, and the color tone of the appearance can be kept stable. Attempts to add tea extract to tea beverages that have been implemented so far are simply aimed at effectively expressing the excellent physiological effects of catechins contained in tea, and the occurrence of flocs in tea beverages There are no examples in which tea extract is used as a means to suppress odor.

また、本発明の茶抽出物を添加した茶飲料、及びその製造方法によると、特別な装置を必要とせずに既存の設備を利用することができるため生産性、製造コストに対する効果が非常に大きく、更に長期間にわたりフロックの発生が抑制され、外観の色調が保たれるため保存性に優れており、かつ、茶本来の優れた風味を有する茶飲料を提供することができる。 In addition, according to the tea beverage to which the tea extract of the present invention is added and the method for producing the tea beverage, the existing equipment can be used without requiring a special device, so that the effect on productivity and production cost is very large. In addition, it is possible to provide a tea beverage that is excellent in preservability because the occurrence of flocs is suppressed for a longer period of time and the color tone of the appearance is maintained, and that has an excellent flavor inherent to tea.

以下において、本発明を詳細に説明する。本発明で言う茶抽出物とは原料となる茶葉を水又は熱水又は含水有機溶媒で抽出し、遠心分離、濾過などの固液分離手段で不溶物を除去した茶抽出液、或いは必要に応じてエバポレーターや凍結乾燥機等により濃縮液や乾燥物の形態にしたものである。本発明の茶抽出物の製造法は、原料となる茶葉や抽出方法を適宜選択してアルミニウム及びストリクチニンの含有量をしかるべき組成となるように調整すればよく、特に制限されないが、上記の方法で得られた茶抽出物にさらに溶媒分画法、限外濾過法、ゲル濾過法、透析などの公知の分離・精製方法を適宜実施しても構わない。 Hereinafter, the present invention will be described in detail. The tea extract as used in the present invention is a tea extract obtained by extracting tea leaves as a raw material with water, hot water or a water-containing organic solvent, and removing insolubles by solid-liquid separation means such as centrifugation and filtration, or as necessary. In the form of a concentrated solution or dried product by an evaporator or freeze dryer. The method for producing the tea extract of the present invention is not particularly limited as long as the content of aluminum and strictinin is adjusted to an appropriate composition by appropriately selecting the tea leaves and the extraction method as raw materials. The tea extract obtained in (1) may be further subjected to known separation / purification methods such as solvent fractionation, ultrafiltration, gel filtration and dialysis as appropriate.

上記に示す原料となる茶葉とは、茶樹(Camellia Sinensis)の葉、又は茎、或いはこれらを原料として製造された加工品を指す。この加工品としては例えば緑茶、花茶等の不発酵茶、ウーロン茶等の半発酵茶、紅茶等の強発酵茶を挙げることができ、いずれも本発明の茶抽出物の原料として使用可能であるが、茶葉中に含まれるアルミニウムとストリクチニンの存在量と、添加対象である茶飲料との風味の兼ね合いから緑茶を用いるのが最も好ましい。 The tea leaf used as a raw material shown above refers to a tea tree ( Camellia Sinesis ) leaf or stem, or a processed product produced using these as raw materials. Examples of the processed product include non-fermented tea such as green tea and flower tea, semi-fermented tea such as oolong tea, and strong fermented tea such as black tea, both of which can be used as a raw material for the tea extract of the present invention. It is most preferable to use green tea because of the balance between the abundance of aluminum and strictinin contained in the tea leaves and the flavor of the tea beverage to be added.

ここで言う緑茶は茶樹の葉、又は茎を収穫後速やかに蒸気または火熱で熱する作業を含む工程により茶葉中の酵素活性を停止させ、すなわち茶の加工における発酵を防止することにより茶葉本来の成分や緑色が保持されるように製造される。緑茶には茶樹の栽培方法や製造方法の違いにより様々なタイプがあり、具体的には煎茶、玉露、かぶせ茶、碾茶、抹茶、番茶、ほうじ茶、釜炒り茶などを例示することができる。アルミニウムは中国茶や番茶、ほうじ茶などに多く含まれていること、ストリクチニンは1番茶や2番茶などの煎茶に多く含まれていることが知られており、これらの緑茶葉を適宜選択、および組み合わせて原料とし、目的とする茶抽出物を作成する事が可能である。
なお、アルミニウムは煎茶(乾燥茶葉)に45mg%、番茶に300mg%程度含まれているが、湯温ではそのうち20%程度しか浸出されず(村松敬一郎、杉山公男、「茶の機能」、学会出版センター、p401)、一般的な茶抽出物におけるその含有量は0.01〜0.1重量%となっている。
The green tea here refers to the original tea leaves by stopping the enzyme activity in the tea leaves by the process including the process of heating the leaves or stems of the tea tree with steam or heat immediately after harvesting, that is, preventing the fermentation in tea processing. Manufactured to retain ingredients and green color. There are various types of green tea depending on differences in the cultivation method and manufacturing method of the tea tree, and specific examples include sencha, gyokuro, kabusecha, bud tea, matcha, bancha, hojicha, and kettle roasted tea. Aluminum is abundant in Chinese tea, bancha, hojicha, etc., and strictinin is known to be abundant in sencha, such as No.1 and No.2, and these green tea leaves are appropriately selected and combined. As a raw material, it is possible to produce the desired tea extract.
Aluminum is 45mg% in Sencha (dried tea leaves) and 300mg% in Bancha, but only about 20% is leached in hot water (Keiichiro Muramatsu, Kimio Sugiyama, "Function of tea", Society Publishing) Center, p401), its content in common tea extracts is 0.01-0.1 wt%.

また複数の種類の市販茶抽出物などを混ぜ合わせてアルミニウム及びストリクチニンの含有量をコントロールし、本発明の茶抽出物とすることもできる。市販茶抽出物としては、三井農林(株)「ポリフェノン」、伊藤園(株)「テアフラン」、太陽化学(株)「サンフェノン」などが挙げられる。 Moreover, it can also be set as the tea extract of this invention by mixing several types of commercially available tea extracts, etc., and controlling content of aluminum and strictinin. Examples of commercially available tea extracts include “Polyphenone”, Mitsui Norin Co., Ltd., “Theafranc”, ITO EN Co., Ltd., and “Sunphenon”, Taiyo Kagaku Co., Ltd.

本発明の茶抽出物は、長期保存時のフロック生成を抑制する点で0.2重量%〜1.0重量%、好ましくは0.3重量%〜0.95重量%、最も好ましくは0.4重量%〜0.9重量%のアルミニウムを含有することが好ましい。アルミニウム含有量が上限を超えた場合は、茶飲料のフロック抑制効果は発揮するものの、カテキン等のポリフェノール成分がアルミニウムと結合体を形成して沈殿を起こす原因となったり、風味が悪化する恐れがあるため望ましくない。一方、下限値以下では目的とするフロック発生抑制効果が期待できないため望ましくない。 The tea extract of the present invention is 0.2% by weight to 1.0% by weight, preferably 0.3% by weight to 0.95% by weight, most preferably 0.8% by weight in terms of suppressing floc formation during long-term storage. It is preferable to contain 4% by weight to 0.9% by weight of aluminum. When the aluminum content exceeds the upper limit, although the floc-inhibiting effect of tea drinks is exhibited, there is a risk that polyphenol components such as catechin will form a conjugate with aluminum and cause precipitation, and the flavor may deteriorate. This is not desirable. On the other hand, if it is less than the lower limit value, the desired effect of suppressing the occurrence of floc cannot be expected.

また外観色調安定性、及び風味の面から、茶抽出物中のアルミニウム(A)とストリクチニン(B)の含有量(重量%)の関係を表した次式〔(A−0.65)+(B−0.07)/16=C〕において、Cは0.25以下となるように調整することが必要であり、好ましくは0.15以下、より好ましくは0.1以下、特に好ましくは0.05以下、最も好ましくは0.01以下である。 In addition, from the viewpoint of appearance color stability and flavor, the following formula [(A−0.65) 2 + representing the relationship between the content (% by weight) of aluminum (A) and strictinin (B) in the tea extract in (B-0.07) 2/16 = C ], C is required to be adjusted to be 0.25 or less, preferably 0.15 or less, more preferably 0.1 or less, particularly preferably Is 0.05 or less, most preferably 0.01 or less.

本発明の茶抽出物において、フロックの発生をより効果的に抑制する為に、ストリクチニンの濃度は1.2重量%以下、より好ましくは1.0重量%以下、更に好ましくは0.8重量%以下、最も好ましくは0.6重量%以下が良い。 In the tea extract of the present invention, in order to more effectively suppress the occurrence of flocs, the concentration of strictinin is 1.2% by weight or less, more preferably 1.0% by weight or less, still more preferably 0.8% by weight. Hereinafter, the most preferable content is 0.6% by weight or less.

また、本発明で用いる茶抽出物のタンニン含有量は50重量%以下、好ましくは40重量%以下が良い。茶抽出物中のタンニン含有量が多すぎると、飲料に添加した際に苦味や渋味が強く、味のバランスが崩れて風味を損なうと共に、変色の原因となりやすい。 The tannin content of the tea extract used in the present invention is 50% by weight or less, preferably 40% by weight or less. If the tannin content in the tea extract is too high, the bitterness and astringency will be strong when added to the beverage, the balance of the taste will be lost and the flavor will be impaired, and it will tend to cause discoloration.

本発明の茶抽出物を用いて一般的な工程において茶飲料を製造すれば、保存中におけるフロックの発生を抑制することができる。茶飲料の一般的な製造工程としては、まず飲料原料とする茶葉を20〜50倍重量の温水又は熱水にて抽出する。抽出時間、温度は使用する茶葉の種類や目的により適宜調整するが、通常は45℃以上95℃以下で3分〜30分の抽出を行い、必要に応じて抽出中に撹拌を行う。次いで茶殻等を濾過や遠心分離により除去することにより茶抽出液を得る。これに、水を加えて茶飲料に適した濃度に希釈し、必要に応じて茶希釈液に対して100〜2000ppmのアスコルビン酸又はその塩等を添加し、同じく100〜2000ppmの炭酸水素ナトリウム等によりpHを5.0〜7.0の間に調整し、調合液とする。最後にこの調合液を缶やペットボトル、ガラス瓶、紙容器などの密封容器に充填して製品化する。また、これら工程中には必要に応じて殺菌工程が含まれる。本発明の茶抽出物はこれら工程中のいずれでも添加することができるが、茶抽出液を希釈して調合液とする段階で添加するのが作業効率上好ましい。 If a tea drink is manufactured in a general process using the tea extract of this invention, generation | occurrence | production of the flock in storage can be suppressed. As a general manufacturing process of a tea beverage, first, tea leaves as a beverage raw material are extracted with 20 to 50 times the weight of hot water or hot water. The extraction time and temperature are appropriately adjusted according to the type and purpose of the tea leaves used, but usually, extraction is performed at 45 ° C. or higher and 95 ° C. or lower for 3 to 30 minutes, and stirring is performed as necessary. Next, the tea leaves are removed by filtration or centrifugation to obtain a tea extract. To this, water is added to dilute to a concentration suitable for tea beverages, and if necessary, 100 to 2000 ppm ascorbic acid or a salt thereof is added to the tea diluent, and also 100 to 2000 ppm sodium bicarbonate, etc. To adjust the pH between 5.0 and 7.0 to obtain a preparation solution. Finally, this preparation solution is filled into sealed containers such as cans, PET bottles, glass bottles, and paper containers to produce products. Moreover, a sterilization process is included in these processes as needed. The tea extract of the present invention can be added at any of these steps, but it is preferable in terms of work efficiency to add it at the stage of diluting the tea extract to obtain a preparation.

上記茶飲料製造工程時における本発明の茶抽出物の添加量は、飲料原料とする茶葉の種類や使用量、抽出方法、最終製品の濃度、形態、及び本発明の茶抽出物中のアルミニウム、ストリクチニン含有量によって適宜調節すればよいが、一般的にタンニン濃度の濃い茶飲料ほどフロックが発生し易い為、茶抽出物の添加量も多めにするのが好ましく、茶飲料中のタンニン含有量に対して0.05〜20.0倍重量となるように茶抽出物を添加するのが効果的である。この茶飲料中のタンニン含有量は、茶抽出物添加後のタンニン含有量で考える。上記飲料製造時に主原料の茶葉以外に、副原料として玄米や各種植物の葉、茎、根などをブレンドしたものや、酸化防止剤、保存料、環状オリゴ糖、食物繊維、乳化剤、色素、香料、安定剤、pH調整剤、酸味料、甘味料、果汁、栄養強化剤などを単独、又は組み合わせて使用しても構わない。 The amount of tea extract of the present invention at the time of the tea beverage production process is the type and amount of tea leaves used as beverage ingredients, the extraction method, the concentration and form of the final product, and the aluminum in the tea extract of the present invention, It may be adjusted as appropriate depending on the strictinin content. Generally, tea drinks with a higher tannin concentration are more likely to generate flocks, so it is preferable to add a larger amount of tea extract. Thus, it is effective to add the tea extract so that the weight becomes 0.05 to 20.0 times. The tannin content in the tea beverage is considered as the tannin content after addition of the tea extract. In addition to the main tea leaves during the beverage production, blended brown rice and various plant leaves, stems, roots, etc. as an auxiliary ingredient, antioxidants, preservatives, cyclic oligosaccharides, dietary fibers, emulsifiers, pigments, fragrances , Stabilizers, pH adjusters, acidulants, sweeteners, fruit juices, nutrient enhancers and the like may be used alone or in combination.

本発明の茶抽出物の添加対象の茶飲料原料としては、緑茶、花茶等の不発酵茶、ウーロン茶等の半発酵茶、紅茶等の強発酵茶などがあげられるが、茶葉の発酵が弱い茶葉ほど、茶飲料に加工した際にフロックや着色などの品質劣化が起こり易く、本発明が効果的になる点で緑茶やジャスミン茶などの花茶が望ましい。また本発明の茶抽出物の添加対象の茶飲料は、金属やプラスチック、ペットボトル、ガラス瓶、紙容器などの密封容器に充填した容器詰飲料であることが特に顕著なフロック抑制効果及び外観の安定性を示す点から望ましい。 Examples of tea beverage materials to which the tea extract of the present invention is added include non-fermented tea such as green tea and flower tea, semi-fermented tea such as oolong tea, and strong fermented tea such as black tea, but tea leaves that are weakly fermented with tea leaves. As described above, flower tea such as green tea and jasmine tea is desirable because quality deterioration such as flock and coloring easily occurs when processed into a tea beverage, and the present invention is effective. Further, the tea beverage to which the tea extract of the present invention is added is a container-packed beverage filled in a sealed container such as a metal, plastic, plastic bottle, glass bottle, paper container, etc., and the remarkable effect of suppressing floc and stability of appearance It is desirable from the point of showing sex.

本発明の茶抽出物を添加することによるフロックの抑制効果は、単独で行っても十分な効果が得られるが、必要に応じてフロックの発生を抑制する公知の従来技術、すなわち酵素処理により高分子多糖類を分解する製造方法、限外濾過やケイ藻土濾過などの精密濾過を行う製造方法、沈殿物の発生を促した後にこれを除去する製造方法等と併用してもよい。 The effect of suppressing flocs by adding the tea extract of the present invention can be obtained sufficiently even if performed alone, but it is enhanced by known conventional techniques that suppress the occurrence of flocs if necessary, that is, by enzyme treatment. You may use together with the manufacturing method which decomposes | disassembles molecular polysaccharide, the manufacturing method which performs microfiltration, such as ultrafiltration and diatomaceous earth filtration, and the manufacturing method which removes this after promoting generation | occurrence | production of a precipitate.

なお、本発明の茶抽出物は茶飲料以外にも、キャンディー、ガム、ゼリー等の菓子類や、医薬部外品、化粧料などの原料となる茶濃縮エキスの沈殿防止にも用いることができる。 In addition to the tea beverage, the tea extract of the present invention can also be used to prevent precipitation of confectionery such as candy, gum, jelly, tea concentrated extract used as a raw material for quasi drugs, cosmetics and the like. .

以下に実施例を挙げ、本発明をさらに詳しく説明する。ただし、本発明はこれに限定されるものではない。   The following examples further illustrate the present invention. However, the present invention is not limited to this.

茶抽出物中のタンニン濃度は日本食品分析センター編、「五訂 日本食品標準成分分析マニュアルの解説」、中央法規、2001年7月、p.252に記載の公定法(酒石酸鉄試薬法)に従って求めた。またアルミニウム含有量は誘導結合プラズマ発光分光分析(ICP−AES)を用いて、ストリクチニン含有量は高速液体クロマトグラフィー(HPLC)を用いて以下の条件で測定を行った。 The tannin concentration in the tea extract is in accordance with the official method (iron tartrate reagent method) described in the Japan Food Analysis Center, “Explanation of the 5th edition Japanese Food Standards Component Analysis Manual”, Central Law, July 2001, p.252. Asked. The aluminum content was measured using inductively coupled plasma emission spectroscopy (ICP-AES), and the strictinine content was measured using high performance liquid chromatography (HPLC) under the following conditions.

≪サンプルの調製≫
茶抽出物を適量の純水に溶解し、0.45μmメンブランフィルター(DISMIC−13HP;ADVANTEC)でろ過し、以下の条件でICP−AES分析またはHPLC分析に供する。
≪Sample preparation≫
The tea extract is dissolved in an appropriate amount of pure water, filtered through a 0.45 μm membrane filter (DISMIC-13HP; ADVANTEC), and subjected to ICP-AES analysis or HPLC analysis under the following conditions.

≪アルミニウム含有量の測定条件≫
装置 :ICP−AES CIROS CCD−M(リガク)
プラズマ電力 :1400W
ポンプ流量 :1ml/min
プラズマガス流量 :Ar,13.0L/min
補助ガス流量 :Ar,1.0L/min
ネブライザーガス流量:Ar,1.0L/min
分析線 :396.152nm
標準液 :関東化学製化学分析用標準液を使用
≪Measurement conditions for aluminum content≫
Device: ICP-AES CIROS CCD-M (Rigaku)
Plasma power: 1400W
Pump flow rate: 1 ml / min
Plasma gas flow rate: Ar, 13.0 L / min
Auxiliary gas flow rate: Ar, 1.0 L / min
Nebulizer gas flow rate: Ar, 1.0 L / min
Analysis line: 396.152 nm
Standard solution: Uses standard solution for chemical analysis manufactured by Kanto Chemical.

≪ストリクチニン含有量の測定条件≫
装置 :アライアンスHPLC/PDAシステム(日本ウォーターズ株式会社 )
カラム: Mightysil RP−18 GP、4.6mmφ×150mm(5μm)(関東化学株式会社)
移動相:A液 アセトニトリル:0.05%リン酸水=25:1000
B液 アセトニトリル:0.05%リン酸水:メタノール=10:400:200 (体積比)
グラジエント:注入3分後から25分後にA液100%からB液100%に達するリニアグラジエント
流速:1ml/min
検出:UV267nm
カラム温度:40℃
≪Measurement conditions for strictinin content≫
Apparatus: Alliance HPLC / PDA system (Nippon Waters Co., Ltd.)
Column: Mightysil RP-18 GP, 4.6 mmφ × 150 mm (5 μm) (Kanto Chemical Co., Inc.)
Mobile phase: Liquid A Acetonitrile: 0.05% phosphoric acid water = 25: 1000
B liquid Acetonitrile: 0.05% phosphoric acid water: methanol = 10: 400: 200 (volume ratio)
Gradient: Linear gradient flow rate reaching from 100% A solution to 100% B solution after 3 minutes and 25 minutes after injection: 1 ml / min
Detection: UV267nm
Column temperature: 40 ° C

(実施例1)
中国産の緑茶葉100gを90℃の熱水1000mLに投入し、攪拌しながら30分間抽出を行い、100メッシュのステンレスフィルターで茶葉を分離する。続いてネル濾過により抽出液中の沈殿物や浮遊物を取り除き、茶抽出液を得る。この茶抽出液に酢酸エチル500mlを加え、分液漏斗を用いて激しく混合した後に静置して水層と酢酸エチル層を分液した。さらに分液した水層へ再度酢酸エチル500mlを加え、同様に混合分液の操作を行った後の水層(酢酸エチル抽出残査)をロータリーエバポレーターで濃縮後、凍結乾燥機で乾燥させ、12gの水層画分を得た。この画分中の(A)アルミニウム濃度、(B)ストリクチニン濃度、(A)と(B)からなる次式(A−0.65)+(B−0.07)/16=Cとした時の(C)の値、(D)タンニン濃度の組成は次の通りであった。
((A)=0.32重量%、(B)=0.05重量%、(C)=0.11、(D)=6.9重量%)
Example 1
100 g of green tea leaves from China are put into 1000 mL of hot water at 90 ° C., extracted for 30 minutes with stirring, and the tea leaves are separated with a 100 mesh stainless steel filter. Subsequently, precipitates and suspended matters in the extract are removed by flannel filtration to obtain a tea extract. To this tea extract, 500 ml of ethyl acetate was added, vigorously mixed using a separatory funnel, and allowed to stand to separate an aqueous layer and an ethyl acetate layer. Furthermore, 500 ml of ethyl acetate was added to the separated aqueous layer again, and the aqueous layer (ethyl acetate extraction residue) after the operation of the mixed liquid separation was concentrated with a rotary evaporator and then dried with a lyophilizer. An aqueous fraction was obtained. (A) aluminum concentration in this fraction, (B) strictinin concentration, (A) and the following equation consisting of (B) (A-0.65) 2 + (B-0.07) 2/16 = C and The composition of the value of (C) and (D) tannin concentration was as follows.
((A) = 0.32 wt%, (B) = 0.05 wt%, (C) = 0.11, (D) = 6.9 wt%)

(実施例2)
実施例1の茶抽出物10gを精製水250mlに溶解した。この溶液を分画分子量10,000の限外濾過膜(PS/10K、マイクロゴン社製)を使用し、限外濾過を行った。透過液量が200mlに達した時点で、濃縮液に精製水200mlを加え、連続して限外濾過した。濃縮液が50mlになったところで、液量を維持するように精製水を加えながら引き続き限外濾過し、透過液750mlを得た。得られた透過液を濃縮乾燥し、透過液画分として8.9g((A)=0.59重量%、(B)=0.01重量%、(C)=0.00、(D)=1.8重量%)を得た。
(Example 2)
10 g of the tea extract of Example 1 was dissolved in 250 ml of purified water. This solution was subjected to ultrafiltration using an ultrafiltration membrane (PS / 10K, manufactured by Microgon) having a molecular weight cut-off of 10,000. When the amount of the permeate reached 200 ml, 200 ml of purified water was added to the concentrated solution, followed by continuous ultrafiltration. When the concentrated liquid reached 50 ml, ultrafiltration was continued while adding purified water so as to maintain the liquid volume to obtain 750 ml of permeate. The obtained permeate was concentrated and dried, and the permeate fraction was 8.9 g ((A) = 0.59 wt%, (B) = 0.01 wt%, (C) = 0.00, (D) = 1.8% by weight).

(比較例1)
実施例1における酢酸エチル層を一つにまとめ、無水硫酸ナトリウムで一晩脱水後、濃縮乾固して比較例1として8gの酢酸エチル画分((A)=0.01重量%、(B)=0.52重量%、(C)=0.42、(D)=77.0重量%)を得た。
(Comparative Example 1)
The ethyl acetate layers in Example 1 were combined, dehydrated with anhydrous sodium sulfate overnight, concentrated and dried, and then, as Comparative Example 1, 8 g of ethyl acetate fraction ((A) = 0.01 wt%, (B ) = 0.52 wt%, (C) = 0.42, (D) = 77.0 wt%).

(比較例2)
実施例1と同様の緑茶葉100gを90℃の熱水1000mLに投入し、攪拌しながら30分間抽出を行い、100メッシュのステンレスフィルターで茶葉を分離する。続いてネル濾過により抽出液中の沈殿物や浮遊物を取り除き、茶抽出液を得る。この茶抽出液を凍結乾燥器により乾燥させ、比較例2として茶抽出物34g((A)=0.16重量%、(B)=0.26重量%、(C)=0.25、(D)=37.9重量%)を得た。
(Comparative Example 2)
100 g of green tea leaves as in Example 1 are put into 1000 mL of hot water at 90 ° C., extracted for 30 minutes with stirring, and the tea leaves are separated with a 100 mesh stainless steel filter. Subsequently, precipitates and suspended matters in the extract are removed by flannel filtration to obtain a tea extract. This tea extract was dried with a freeze dryer, and as Comparative Example 2, 34 g of tea extract ((A) = 0.16 wt%, (B) = 0.26 wt%, (C) = 0.25, ( D) = 37.9% by weight).

(比較例3)
烏龍茶葉50gを90℃の熱水500mLに投入し、攪拌しながら30分間抽出を行い、100メッシュのステンレスフィルターで茶葉を分離する。続いてネル濾過により抽出液中の沈殿物や浮遊物を取り除き、茶抽出液を得る。この茶抽出液を凍結乾燥器により乾燥させ、比較例3として茶抽出物16g((A)=0.05重量%、(B)=0.00重量%、(C)=0.36、(D)=15.3重量%)を得た。
(Comparative Example 3)
50 g of Oolong tea leaves are put into 500 mL of hot water at 90 ° C., extracted for 30 minutes with stirring, and tea leaves are separated with a 100 mesh stainless steel filter. Subsequently, precipitates and suspended matters in the extract are removed by flannel filtration to obtain a tea extract. This tea extract was dried with a freeze dryer, and as Comparative Example 3, 16 g of tea extract ((A) = 0.05 wt%, (B) = 0.00 wt%, (C) = 0.36, ( D) = 15.3 wt%).

(比較例4)
市販の茶抽出物ポリフェノンCH(三井農林(株))((A)=0.18重量%、(B)=1.40重量%、(C)=0.33、(D)=36.2重量%)を比較例4として用いた。
(Comparative Example 4)
Commercially available tea extract polyphenone CH (Mitsui Norin Co., Ltd.) ((A) = 0.18 wt%, (B) = 1.40 wt%, (C) = 0.33, (D) = 36.2 % By weight) was used as Comparative Example 4.

(比較例5)
実施例1と同様の緑茶葉100gを10gのミョウバン(硫酸カリウムアルミニウム・12水、和光純薬(株)、Al含有量=5.69重量%)を加えた90℃の熱水1000mLに投入し、攪拌しながら30分間抽出を行い、100メッシュのステンレスフィルターで茶葉を分離する。続いてネル濾過により抽出液中の沈殿物や浮遊物を取り除き、茶抽出液を得る。この茶抽出液を凍結乾燥器により乾燥させ、比較例5として茶抽出物42g((A)=1.68重量%、(B)=0.21重量%、(C)=1.06、(D)=28.5重量%)を得た。
(Comparative Example 5)
100 g of the same green tea leaf as in Example 1 was put into 1000 mL of hot water at 90 ° C. to which 10 g of alum (potassium aluminum sulfate, 12 water, Wako Pure Chemical Industries, Ltd., Al content = 5.69 wt%) was added. Extract with stirring for 30 minutes and separate the tea leaves with a 100 mesh stainless steel filter. Subsequently, precipitates and suspended matters in the extract are removed by flannel filtration to obtain a tea extract. This tea extract was dried using a freeze dryer, and as Comparative Example 5, 42 g of tea extract ((A) = 1.68 wt%, (B) = 0.21 wt%, (C) = 1.06, ( D) = 28.5% by weight).

(試験例1)
液体飲料用にブレンドした緑茶葉100gを、557ppmとなるようにアスコルビン酸ナトリウムを添加した60℃のイオン交換水3000gで5分間抽出し、100メッシュのステンレスフィルターで茶葉を分離した。続いて濾紙(No.26、アドバンテック(株)製)を用いて濾過し、2700gの緑茶抽出液を得た。この抽出液に実施例1、2、及び比較例1〜5に示す茶抽出物をそれぞれ抽出液1000gに対して1000mgとなるように添加し、それぞれタンニン量55mg%となるようにイオン交換水で希釈し、L−アスコルビン酸と炭酸水素ナトリウムを緑茶希釈液1000gあたり0.3gずつ加え、緑茶調合液を作製した。タンニン含有量の測定は上記酒石酸鉄試薬法に従って行った。また茶抽出物を添加した抽出液に対する希釈割合から、茶調合液中の茶抽出物濃度を計算した。
対照品として茶抽出液に茶抽出物を添加しないで同様の希釈・調合を行い、緑茶の調合液を作成した。各々を耐熱性ガラス容器に300gずつ80℃でホットパック充填して密封し、レトルト殺菌処理(121℃、10分間)を行って緑茶飲料とした。
(Test Example 1)
100 g of green tea leaves blended for liquid beverage were extracted for 5 minutes with 3000 g of ion exchange water at 60 ° C. to which sodium ascorbate had been added so as to be 557 ppm, and the tea leaves were separated with a 100 mesh stainless steel filter. Subsequently, the mixture was filtered using a filter paper (No. 26, manufactured by Advantech Co., Ltd.) to obtain 2700 g of green tea extract. The tea extracts shown in Examples 1 and 2 and Comparative Examples 1 to 5 were added to this extract so as to be 1000 mg with respect to 1000 g of the extract, respectively, and ion-exchanged water so that the amount of tannin was 55 mg%. After dilution, 0.3 g of L-ascorbic acid and sodium bicarbonate were added per 1000 g of the green tea diluted solution to prepare a green tea preparation. The tannin content was measured according to the iron tartrate reagent method. Moreover, the tea extract density | concentration in tea preparation liquid was calculated from the dilution ratio with respect to the extract liquid which added the tea extract.
As a control product, the same dilution and blending was performed without adding the tea extract to the tea extract to prepare a green tea blend. Each heat-resistant glass container was filled with 300 g of hot packs at 80 ° C. and sealed, and subjected to retort sterilization (121 ° C., 10 minutes) to give a green tea beverage.

以上で得られた緑茶飲料を室温に冷却後、25℃の恒温機中に保存し、経時的なフロックの発生を目視観察して、保存を開始してからフロックが発生するまでにかかった日数(以下、「フロック発生日数」とする)を記録した。保存開始から30日以上発生が見られなかったサンプルは「発生なし」とした。また茶抽出物未添加の対照品と比較してフロックの発生を2倍以上遅らせた場合に、フロック抑制効果がある、とした。さらに、これらの緑茶飲料を2週間保存した後、風味について官能試験を行った。試験は10人のパネラーによる3点満点の評価(3点:良い、2点:やや良い、1点:やや悪い、0点:悪い)で行い、全パネラーから得られた平均点で表した。また同じく2週間保存後のサンプルを、分光式色差計(型番:SE−2000 日本電色工業(株))を用いて透過光でL値、a値、b値を測定し、それぞれ初発品に対する色差ΔEを計算して色調の変動を調べた。一般的に色差ΔEが3.2以下で同じ色だと見なされている。ΔEの計算は次式から求めた。
L0:初発品L値 a0:初発品a値 b0:初発品b値
L1:保存品L値 a1:保存品a値 b1:保存品b値
ΔE=√〔(L0−L1)+(a0−a1)+(b0−b1)
フロック発生日と官能評価の結果並びに色調の変動を表1に示す。
The green tea beverage obtained above is cooled to room temperature and then stored in a thermostatic oven at 25 ° C., and the number of days taken from the start of storage to the occurrence of floc by visually observing the occurrence of floc over time (Hereinafter referred to as “the number of flock occurrence days”) was recorded. Samples that did not occur for more than 30 days from the start of storage were considered “no occurrence”. In addition, when the occurrence of flocs was delayed by 2 times or more compared to a control product to which no tea extract was added, it was considered that there was a floc suppressing effect. Furthermore, after storing these green tea beverages for 2 weeks, a sensory test was performed on the flavor. The test was performed by 10 panelists on a three-point scale (3 points: good, 2 points: somewhat good, 1 point: slightly bad, 0 point: bad), and expressed as an average score obtained from all panelists. Similarly, the samples after storage for 2 weeks were measured for L value, a value, and b value with transmitted light using a spectroscopic color difference meter (model number: SE-2000 Nippon Denshoku Industries Co., Ltd.). The color difference ΔE was calculated to examine the variation in color tone. Generally, the color difference ΔE is considered to be the same color when the color difference ΔE is 3.2 or less. ΔE was calculated from the following equation.
L0: Initial product L value a0: Initial product a value b0: Initial product b value L1: Preserved product L value a1: Preserved product a value b1: Preserved product b value ΔE = √ [(L0−L1) 2 + (a0− a1) 2 + (b0−b1) 2 ]
Table 1 shows the flock occurrence date, the results of sensory evaluation, and the change in color tone.

Figure 2006320246
Figure 2006320246

表1から明らかなように、アルミニウム含有量とストリクチニン含有量の値をコントロールした茶抽出物を添加した茶飲料はフロックの発生を抑制し、良好な風味と色調の安定性を有する事が確認された。 As is clear from Table 1, it was confirmed that the tea beverage to which the tea extract with controlled aluminum content and strictinin content was added suppressed the occurrence of floc and had good flavor and color tone stability. It was.

(試験例2)
次に、試験例1で用いた実施例2の茶抽出物と比較例2または/及び4の茶抽出物をブレンドし、アルミニウム含有量とストリクチニン含有量の値をコントロールして、実施例3〜5に示す茶抽出物を作成した。
(Test Example 2)
Next, the tea extract of Example 2 used in Test Example 1 and the tea extract of Comparative Example 2 or / and 4 were blended, and the values of aluminum content and strictinin content were controlled, and Examples 3 to 3 were controlled. The tea extract shown in 5 was prepared.

(実施例3)
実施例3として、実施例2の茶抽出物7gと比較例2の茶抽出物3gをブレンドし、茶抽出物10g((A)アルミニウム濃度=0.46重量%、(B)ストリクチニン濃度=0.08重量%、(C)(A−0.65)+(B−0.07)/16=0.04、(D)タンニン濃度=12.6重量%)を得た。
(Example 3)
As Example 3, 7 g of the tea extract of Example 2 and 3 g of the tea extract of Comparative Example 2 were blended, and 10 g of tea extract ((A) aluminum concentration = 0.46 wt%, (B) strictinin concentration = 0 0.08 wt%, (C) (A−0.65) 2 + (B−0.07) 2 /16=0.04, (D) tannin concentration = 12.6 wt%).

(実施例4)
実施例4として、実施例2の茶抽出物3gと比較例4の茶抽出物7gをブレンドし、茶抽出物10g((A)=0.30重量%、(B)=0.98重量%、(C)=0.17、(D)=25.9重量%)を得た。
Example 4
As Example 4, 3 g of tea extract of Example 2 and 7 g of tea extract of Comparative Example 4 were blended, and 10 g of tea extract ((A) = 0.30 wt%, (B) = 0.98 wt%) , (C) = 0.17, (D) = 25.9 wt%).

(実施例5)
実施例5として、実施例2の茶抽出物5gと比較例2の茶抽出物2gと比較例4の茶抽出物3gをブレンドし、茶抽出物10g((A)=0.38重量%、(B)=0.48重量%、(C)=0.08、(D)=19.3重量%)を得た。
(Example 5)
As Example 5, 5 g of the tea extract of Example 2, 2 g of the tea extract of Comparative Example 2 and 3 g of the tea extract of Comparative Example 4 were blended, and 10 g of tea extract ((A) = 0.38% by weight, (B) = 0.48 wt%, (C) = 0.08, (D) = 19.3 wt%).

試験例1と同様に緑茶抽出液を得た。これを希釈して、タンニンを50mg/100mlとし、L−アスコルビン酸と炭酸水素ナトリウムを希釈液1000gあたり0.3gずつ加え、緑茶調合液を作製した。この調合液に実施例3〜5に示す茶抽出物をそれぞれ調合液1000gに対して350mgずつ添加した。一方、対照用緑茶飲料として、茶抽出物無添加のものも作製した。 A green tea extract was obtained in the same manner as in Test Example 1. This was diluted to 50 mg / 100 ml of tannin, and 0.3 g of L-ascorbic acid and sodium bicarbonate were added per 1000 g of the diluted solution to prepare a green tea preparation. 350 mg of the tea extract shown in Examples 3 to 5 was added to each 1000 g of the prepared liquid. On the other hand, a tea extract-free product was also prepared as a control green tea beverage.

また、別に上記の緑茶抽出液を希釈して、タンニン100mg/100mlとし、L−アスコルビン酸と炭酸水素ナトリウムを希釈液1000gあたり0.6gずつ加え、緑茶調合液を作製した。この緑茶調合液に実施例3〜5に示す茶抽出物をそれぞれ調合液1000gに対して4gずつ添加した。同様に、対照用緑茶飲料として、茶抽出物無添加のものも作製した。各々の調合液を耐熱性ガラス容器に300gずつ80℃でホットパック充填して密封し、レトルト殺菌処理(121℃、10分間)を行って緑茶飲料とした。 Separately, the above green tea extract was diluted to a tannin of 100 mg / 100 ml, and L-ascorbic acid and sodium bicarbonate were added in an amount of 0.6 g per 1000 g of the diluted solution to prepare a green tea preparation. The tea extract shown in Examples 3-5 was added to this green tea preparation liquid 4g at a time with respect to 1000g of preparation liquid, respectively. Similarly, a green tea beverage with no tea extract added was prepared as a control green tea beverage. Each prepared solution was hot-packed and sealed at 80 ° C. in a heat-resistant glass container at 300 ° C., and retort sterilized (121 ° C., 10 minutes) to give a green tea beverage.

以上で得られた緑茶飲料を室温に冷却後、25℃の恒温機中に保存し、経時的なフロックの発生を目視観察してフロック発生日数を記録した。30日以上発生が見られなかったサンプルは「発生なし」とした。 The green tea beverage obtained above was cooled to room temperature and then stored in a thermostat at 25 ° C., and the occurrence of flocs over time was visually observed to record the number of floc occurrence days. Samples that did not occur for 30 days or more were considered “no occurrence”.

また茶抽出物未添加の対照品と比較してフロックの発生を2倍以上遅らせた場合に、フロック抑制効果がある、とした。 In addition, when the occurrence of floc was delayed more than twice as compared with the control product to which no tea extract was added, it was considered that there was a floc suppressing effect.

また、これらの緑茶飲料を2週間保存した後、風味について官能試験を行った。試験は10人のパネラーによる3点満点の評価(3点:良い、2点:やや良い、1点:やや悪い、0点:悪い)で行い、全パネラーから得られた平均点で表した。また同じく2週間保存後のサンプルを、分光式色差計(型番:SE−2000 日本電色工業(株))を用いて透過光でL値、a値、b値を測定し、それぞれ初発品に対する色差ΔEを計算して色調の変動を調べた。フロック発生日数と官能評価の結果並びに色調の変動を表2に示す。 Moreover, after storing these green tea drinks for 2 weeks, a sensory test was performed on the flavor. The test was performed by 10 panelists on a three-point scale (3 points: good, 2 points: somewhat good, 1 point: slightly bad, 0 point: bad), and expressed as an average score obtained from all panelists. Similarly, the samples after storage for 2 weeks were measured for L value, a value, and b value with transmitted light using a spectroscopic color difference meter (model number: SE-2000 Nippon Denshoku Industries Co., Ltd.). The color difference ΔE was calculated to examine the variation in color tone. Table 2 shows the flock occurrence days, sensory evaluation results, and color tone variations.

Figure 2006320246
Figure 2006320246

表2から明らかなように、茶抽出物を混合し、アルミニウム含有量とストリクチニン含有量の値をコントロールした茶抽出物を添加すると、茶飲料のフロックの発生を抑制し、良好な風味と外観の色調安定性を有する事が確認された。 As can be seen from Table 2, mixing tea extract and adding tea extract with controlled aluminum content and strictinin content value suppresses the occurrence of floc in tea beverages, and has good flavor and appearance. It was confirmed to have color tone stability.

本発明の茶抽出物は、前記の通り、特別な装置を必要とせず既存の設備を利用して簡便に、フロックの発生を長期間にわたり抑制する効果を有し、且つ茶由来の良好な風味と外観の色調安定性を供する高品質な茶飲料の製造に利用可能である。

As described above, the tea extract of the present invention has an effect of suppressing the generation of flocs over a long period of time, easily using existing equipment without requiring a special device, and has a good flavor derived from tea. And can be used for the production of high-quality tea beverages that provide color stability of appearance.

Claims (7)

次の成分(A)、(B):
(A)アルミニウム0.2〜1.0重量%、
(B)ストリクチニン
を含有し、成分(A)の含有量(重量%)と成分(B)の含有量(重量%)からなる次式
(A−0.65)+(B−0.07)/16=Cとした時に
Cが0.25以下となる茶抽出物。
The following components (A) and (B):
(A) 0.2 to 1.0% by weight of aluminum,
(B) Containing strictinin, and comprising the content (% by weight) of component (A) and the content (% by weight) of component (B), the following formula (A−0.65) 2 + (B−0.07 ) tea extract C is 0.25 or less when the 2/16 = C.
ストリクチニンの含有量が1.2重量%以下である請求項1記載の茶抽出物。 The tea extract according to claim 1, wherein the content of strictinin is 1.2 wt% or less. タンニン含有量が50重量%以下である請求項1乃至2記載の茶抽出物。 The tea extract according to claim 1 or 2, wherein the tannin content is 50% by weight or less. 緑茶を原料とすることを特徴とした請求項1乃至3記載の茶抽出物。 4. The tea extract according to claim 1, wherein green tea is used as a raw material. 茶飲料に添加されるものである請求項1乃至4記載の茶抽出物。 The tea extract according to claims 1 to 4, which is added to a tea beverage. 請求項1乃至5記載の茶抽出物を添加し、製造されたことを特徴とする茶飲料。 A tea beverage produced by adding the tea extract according to claim 1. 請求項1乃至5記載の茶抽出物を添加し、製造されたことを特徴とする茶飲料の製造方法。

A method for producing a tea beverage, wherein the tea extract according to claim 1 is added and produced.

JP2005146131A 2005-05-19 2005-05-19 Tea extract Pending JP2006320246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005146131A JP2006320246A (en) 2005-05-19 2005-05-19 Tea extract

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005146131A JP2006320246A (en) 2005-05-19 2005-05-19 Tea extract

Publications (1)

Publication Number Publication Date
JP2006320246A true JP2006320246A (en) 2006-11-30

Family

ID=37540377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005146131A Pending JP2006320246A (en) 2005-05-19 2005-05-19 Tea extract

Country Status (1)

Country Link
JP (1) JP2006320246A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320245A (en) * 2005-05-19 2006-11-30 Mitsui Norin Co Ltd Floc-occurrence inhibitor for tea beverage
JP2009082110A (en) * 2007-10-03 2009-04-23 Kao Corp Method of producing tea extract solution
JP2011126834A (en) * 2009-12-18 2011-06-30 Ito En Ltd Antiviral agent

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003235451A (en) * 2002-02-20 2003-08-26 Ito En Ltd Method for selecting raw material for tea beverage and method for producing tea beverage
JP2003235452A (en) * 2002-02-20 2003-08-26 Ito En Ltd Method for producing tea beverage
JP2004180574A (en) * 2002-12-03 2004-07-02 Kao Corp Bottled green tea beverage
JP2004208605A (en) * 2002-12-27 2004-07-29 Ito En Ltd Tea beverage material and method for producing the same
JP2004321194A (en) * 2004-08-23 2004-11-18 Ito En Ltd Raw material for tea beverage
JP2005027554A (en) * 2003-07-11 2005-02-03 Taiyo Kagaku Co Ltd Tea flavor enhancer
JP2005143331A (en) * 2003-11-12 2005-06-09 Mitsui Norin Co Ltd Method for inhibiting occurrence of floc in packaged tea beverage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003235451A (en) * 2002-02-20 2003-08-26 Ito En Ltd Method for selecting raw material for tea beverage and method for producing tea beverage
JP2003235452A (en) * 2002-02-20 2003-08-26 Ito En Ltd Method for producing tea beverage
JP2004180574A (en) * 2002-12-03 2004-07-02 Kao Corp Bottled green tea beverage
JP2004208605A (en) * 2002-12-27 2004-07-29 Ito En Ltd Tea beverage material and method for producing the same
JP2005027554A (en) * 2003-07-11 2005-02-03 Taiyo Kagaku Co Ltd Tea flavor enhancer
JP2005143331A (en) * 2003-11-12 2005-06-09 Mitsui Norin Co Ltd Method for inhibiting occurrence of floc in packaged tea beverage
JP2004321194A (en) * 2004-08-23 2004-11-18 Ito En Ltd Raw material for tea beverage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320245A (en) * 2005-05-19 2006-11-30 Mitsui Norin Co Ltd Floc-occurrence inhibitor for tea beverage
JP4587873B2 (en) * 2005-05-19 2010-11-24 三井農林株式会社 Floc occurrence inhibitor for tea beverage
JP2009082110A (en) * 2007-10-03 2009-04-23 Kao Corp Method of producing tea extract solution
JP2011126834A (en) * 2009-12-18 2011-06-30 Ito En Ltd Antiviral agent

Similar Documents

Publication Publication Date Title
JP5118334B2 (en) High concentration black tea containing polyphenols
US7972644B2 (en) Bottleable green tea beverage
JP5342874B2 (en) Polyphenol-rich black tea beverage and method for producing the same
CN107580455A (en) Green tea extracts composition
JP2008000044A (en) Method for appraising tea leaf using theogalline as index
JP2006333769A (en) Tea extract
JP3696594B2 (en) Production method of tea extract
JP4441559B2 (en) Containerized tea beverage
JP5336340B2 (en) Method for producing purified tea extract
JP4912622B2 (en) Containerized tea beverage
JP5191087B2 (en) Containerized tea beverage
JP2006320246A (en) Tea extract
JP7074418B1 (en) Fermented tea extract manufacturing method
JP4074625B2 (en) Method for suppressing or preventing floc occurrence in containerized tea beverage, method for producing containerized tea beverage
JP4587873B2 (en) Floc occurrence inhibitor for tea beverage
JP4088637B2 (en) Tea extract
JP4545640B2 (en) Tea extract
JP4912623B2 (en) Containerized tea beverage
JP5536381B2 (en) Green tea-containing tea beverage
JP6993418B2 (en) Decolorized tea extract and its manufacturing method
EP3560346B1 (en) Food and beverages containing epigallocatechin gallate and cyclo(prolyl-threonine)
JP6912190B2 (en) Stain-free tea beverage
JP4673247B2 (en) Process for producing a processed tea extraction product with improved flavor
JP4866818B2 (en) Tea extract
CA2541255C (en) Bottleable green tea beverage

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20070124

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090717

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091124

A521 Written amendment

Effective date: 20100120

Free format text: JAPANESE INTERMEDIATE CODE: A523

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20101214