JP4819007B2 - Container-packed non-tea beverage - Google Patents

Description

  The present invention relates to a container-packed non-tea beverage containing a high concentration of non-polymer catechins.

  The effects of catechins have been reported to inhibit cholesterol elevation, inhibit amylase activity, etc. (see, for example, Patent Documents 1 and 2). In order to express such physiological effects of catechins, in order to ingest a large amount of catechins more easily, a technique for containing a high concentration of catechins in a beverage is desired. As one of these methods, there is a method in which catechins are added to a beverage in a dissolved state using a concentrate of green tea extract (for example, see Patent Documents 3 to 5).

JP-A-60-156614 Japanese Patent Laid-Open No. 3-133828 JP 2002-142777 A JP-A-8-298930 JP-A-8-109178

However, when a packaged beverage containing catechins is stored for a long period of time, the appearance of the beverage is likely to change, and it has been difficult to stably maintain the hue over a long period of time. Therefore, when we tried to fill a plastic container with a particularly low oxygen permeability, when filling such a plastic container, the hue was higher than when filling a normal plastic container. Although it was predicted that it could be held stably, surprisingly, the color change may vary depending on the catechin composition of the purified green tea extract, particularly the concentration of non-polymer catechins in the solid content of the green tea extract. It turned out that the tendency to stand out more is seen.
Therefore, an object of the present invention is to control a purified product of green tea extract to be blended more precisely, so that a catechin-containing container with little hue change during long-term storage even when a plastic container with low oxygen permeability is used. The purpose is to provide a non-tea beverage.

  The inventors of the present invention have made various studies on solutions to the above problems, and when filling a plastic container having an oxygen permeability of 0.001 mL / day · bottle · atm or less, the green tea extract having a specific composition can be obtained. By blending the purified product, it has been found that the hue change can be prevented at a high level even when stored for a long period of time, and the present invention has been completed.

That is, the present invention
(A) Non-polymer catechin concentration is 60% by mass or more as a solid content, and (B) gallate content in non-polymer catechins is 10 to 47% by mass.
A beverage containing at least a purified product of green tea extract is filled in a plastic container having an oxygen permeability of 0.001 mL / day · bottle · atm or less,
(C) The content of non-polymer catechins in the beverage is 0.072 to 1.0% by mass,
(D) The gallic acid concentration in the beverage is 1 to 15 mg / 100 mL
The container-packed non-tea beverage is provided.

  According to the present invention, non-tea beverages containing catechins at a high concentration and having little hue change even when stored for a long period of time, especially isotonic beverages, sports beverages, fruit juice beverages, vegetable beverages, etc. As a useful beverage.

  The container-packed non-tea beverage of the present invention contains a purified product of green tea extract having a non-polymer catechin concentration of 60% by mass or more and a gallate content in the non-polymer catechins of 10 to 47% by mass. It is a thing. The upper limit of the gallate body ratio is 47% by mass, but 46% by mass is preferable, while the lower limit of the gallate body ratio is 10% by mass, but 20% by mass is preferable. Thereby, a hue change can be prevented effectively and the physiological effect by non-polymerizable catechins can be expressed more reliably.

  In the present invention, non-polymer catechins are non-epimeric catechins such as catechin, gallocatechin, catechin gallate, and gallocatechin gallate, and epicatechins such as epicatechin, epigallocatechin, epicatechin gallate, and epigallocatechin gallate. It refers to the generic name of all kinds.

The gallate body ratio refers to the ratio (mass%) of the generic gallate body composed of catechin gallate, epicatechin gallate, gallocatechin gallate and epigallocatechin gallate to all non-polymer catechins.
The gallate body fraction can be lowered by treating the green tea extract with tannase. In the treatment with tannase, tannase is preferably added in a range of 0.5 to 10% by mass with respect to the non-polymer catechins in the green tea extract. The temperature of the tannase treatment is preferably 15 to 40 ° C., more preferably 20 to 30 ° C. at which enzyme activity can be obtained. The pH (25 ° C.) during the tannase treatment is preferably 4 to 6, from which enzyme activity can be obtained, more preferably 4.5 to 6, and particularly preferably 5 to 6.

  As a purified product of green tea extract, a concentrate of green tea extract can be used as a raw material. Examples of the concentrate of the green tea extract include an aqueous solution of the concentrate of the green tea extract or a mixture of the green tea extract and the concentrate of the green tea extract. The concentrate of green tea extract here refers to a product obtained by partially removing water from a solution extracted from green tea leaves with hot water or a water-soluble organic solvent, and purified to increase the concentration of non-polymer catechins. Various forms such as a solid, an aqueous solution, and a slurry are exemplified as the form. The green tea extract refers to an extract that is not subjected to concentration or purification operations.

  The purified green tea extract can be selected from commercially available Mitsui Norin Co., Ltd. “Polyphenone”, ITO EN Co., Ltd. “Theafuran”, Taiyo Kagaku Co., Ltd. “Sunphenon” and the like. If the concentration of non-polymer catechins is in the above range, purified products thereof may be used. Examples of the purification method include a method in which a precipitate formed by suspending a concentrate of green tea extract in water or a mixture of water and an organic solvent such as ethanol is removed, and then the solvent is distilled off. Further, a product obtained by further purifying an extract extracted from tea leaves with hot water or a water-soluble organic solvent such as ethanol, or a product obtained by directly purifying the extract may be used.

  The container-packed non-tea beverage of the present invention contains 0.072 to 1.0 mass% of (a) non-polymer catechins, preferably 0.06 to 1.0 mass%, more preferably 0.08. -0.8 mass%, More preferably, it is 0.09-0.6 mass%, Most preferably, it is 0.1-0.4 mass%. When the content of non-polymer catechins is in the above range, a large amount of non-polymer catechins can be easily taken, and it is also preferable from the viewpoint that there is little change in flavor in the container-packed non-tea beverage manufacturing process.

  In the container-packed non-tea beverage of the present invention, the mass ratio [(b) / (a)] of (b) epi-catechins and (a) non-polymer catechins is 0.7 to 1.0. Preferably, there is more preferably 0.72 to 1.0, even more preferably 0.74 to 1.0, still more preferably 0.76 to 1.0, particularly preferably 0.76 to 0.99, Most preferably, it is 0.77-0.98. Examples of epi-catechins include epicatechin, epigallocatechin, epicatechin gallate, epigallocatechin gallate and the like. In the above range, in addition to being preferable from the point that there is little flavor change in the beverage preparation process, it is very similar to the composition of catechins contained in natural tea leaves, so it consumes a lot of naturally occurring catechins This is preferable because it is easy to form.

  The content of gallic acid in the container-packed non-tea beverage of the present invention is 1 to 15 mg / 100 mL, preferably 1 to 12 mg / 100 mL, more preferably 2 in terms of the balance of bitterness, astringency and sourness. -10 mg / 100 mL, more preferably 3-9 mg / 100 mL, particularly preferably 3-8 mg / 100 mL.

  The content of non-polymer catechin and gallic acid can be adjusted by concentrating, purifying, tannase treatment, recrystallization of catechins at low temperature, addition of gallic acid, etc. .

  The container-packed non-tea beverage of the present invention may contain a sweetener for the purpose of improving the taste. Examples of the sweetener include artificial sweeteners, carbohydrate-based sweeteners, and glycerols. Among them, artificial sweeteners are preferable. The content of these sweeteners is preferably 0.005 to 10% by mass, more preferably 0.01 to 8% by mass, and particularly preferably 0.1 to 5% by mass in the container-packed non-tea beverage of the present invention. It is. If it is less than 0.005% by mass, there is almost no sweetness, and it becomes difficult to balance acidity and salty taste. On the other hand, if it exceeds 10% by mass, the amount of solids in the beverage will increase, and the beverage will become thick, so it is not only for drinking in daily life, but especially in sports and other situations where you want to drink water May not be preferable.

  Examples of the artificial sweetener include aspartame, saccharin, cyclamate, acesulfame-K, L-aspartyl-L-phenylalanine lower alkyl ester sweetener, L-aspartyl-D-alanine amide, L-aspartyl-D-serine amide, L-aspartyl-hydroxymethylalkanamide sweetener, L-aspartyl-1-hydroxyethylalkanamide sweetener, high-sweetness sweeteners such as sucralose, thaumatin, sugar alcohols such as erythritol, xylitol, trehalose, glycyrrhizin, synthetic alkoxy aroma Group compounds and the like. Stevioside and other natural source sweeteners can also be used.

  Examples of the carbohydrate-based sweetener include soluble carbohydrates. Soluble carbohydrates serve as sweeteners and energy sources. The criteria for selecting carbohydrates as sweeteners is important to consider sufficient gastric emptying and intestinal absorption rates. The carbohydrate may be a mixture of glucose and fructose and may be a carbohydrate that hydrolyzes in the digestive tract or forms glucose and fructose. The term “carbohydrate” as used herein includes monosaccharides, oligosaccharides, complex polysaccharides or mixtures thereof.

Glucose and fructose are particularly preferred as the monosaccharide.
Examples of the oligosaccharide include carbohydrates that produce these two types of monosaccharides such as glucose and fructose in the body (that is, sucrose (sucrose), maltodextrin, corn syrup, high fructose corn syrup). Of these oligosaccharides, sucrose is preferred.
A preferred example of the complex polysaccharide is maltodextrin. They are spray-dried polysaccharides obtained by hydrolysis of corn starch.

  The total carbohydrate content in the packaged non-tea beverage of the present invention is the same as the sweetener, but the total carbohydrate content is naturally present in the fruit juice or tea extract in addition to that used as a sweetener. Includes existing and added carbohydrates. Carbohydrate derivatives, polyhydric alcohols other than glycerols, and the like may be supplied and used for the purpose of supplying energy so that they are easily absorbed and distributed throughout the body.

  The container-packed non-tea beverage of the present invention may contain sodium ions and potassium ions. As a result, even when stored for a long period of time, the refreshing sensation does not become dilute, the sourness that is particularly seen during drinking does not follow, and the refreshing feeling in the mouth is excellent. In addition to drinking in daily life, it is particularly suitable as a beverage that can be drunk in sports.

  The container-packed non-tea beverage of the present invention preferably contains 0.0001 to 0.2% by mass of sodium ions and 0.0001 to 0.1% by mass of potassium ions. If it is in this range, even if it is drunk under various circumstances, it is sufficient in taste and can be effectively supplemented with minerals, and the salt itself does not have a strong taste, which is preferable for drinking over a long period of time.

  Sodium ions include readily available sodium salts such as sodium chloride, sodium carbonate, sodium bicarbonate, sodium citrate, sodium phosphate, sodium hydrogen phosphate, sodium tartrate, sodium benzoate and the like and mixtures thereof, Those derived from plant or fruit extracts or tea components are also included. The sodium ion concentration is preferably lower than the plasma sodium ion concentration. As described above, the content of sodium ions in the non-tea beverage packaged according to the present invention is preferably 0.0001 to 0.2% by mass, more preferably 0.0005 to 0.2% by mass, and more. More preferably 0.001 to 0.15% by mass, more preferably 0.002 to 0.15% by mass, particularly preferably 0.003 to 0.1% by mass, and most preferably 0.0035 to 0.09% by mass. %.

  Potassium ions include potassium salts such as potassium chloride, potassium carbonate, potassium sulfate, potassium acetate, potassium bicarbonate, potassium citrate, potassium phosphate, potassium hydrogen phosphate, potassium tartrate, potassium sorbate and the like or mixtures thereof. Also included are those derived from plant and fruit extracts or tea ingredients. As described above, the potassium ion in the non-tea beverage of the present invention is preferably 0.0001 to 0.1% by mass, more preferably 0.0005 to 0.1% by mass, and still more preferably 0. 0.001 to 0.08 mass%, more preferably 0.002 to 0.08 mass%, particularly preferably 0.003 to 0.08 mass%, and most preferably 0.0035 to 0.07 mass%.

In addition to sodium ions and potassium ions, the container-packed non-tea beverage of the present invention may contain chloride ions. The chloride ion content is preferably 0.0001 to 0.3% by mass, more preferably 0.0002 to 0.3% by mass, and particularly preferably 0.0005 to 0.3% by mass. The chloride ion component can be formulated in the form of a salt such as sodium chloride or potassium chloride. In addition, other trace ions such as calcium, magnesium, zinc, iron may be included. These ions may also be contained as salts.
The total amount of ions present in the packaged non-tea beverage of the present invention includes the amount naturally present in the beverage as well as the amount of added ions. For example, when sodium chloride is added, that amount of sodium ions and that amount of chloride ions will be included in the total amount of each ion accordingly.

  The container-packed non-tea beverage of the present invention may further contain one or more flavors selected from plants and fruits for the purpose of further improving the palatability. Examples of the flavoring agent include what are generally called fragrances or flavors, fruit juices or fruit juices. In addition, natural or synthetic flavors can be used.

As flavorings or flavors, fruit flavors, plant flavors, tea flavors or mixtures thereof can be used. In particular, a combination of fruit flavors and tea flavors, preferably green tea or black tea flavors, has a preferred taste.
Particularly preferred fragrances are citrus flavors including orange flavor, lemon flavor, lime flavor and grapefruit flavor. Other fruit flavors include apple flavor, grape flavor, raspberry flavor, cranberry flavor, cherry flavor, pineapple flavor and the like. Furthermore, examples of natural flavors include jasmine, chamomile, rose, peppermint, hawthorn, chrysanthemum, hoshi, sugar cane, litchi, bamboo shoot and the like. These flavors may be natural products such as fruit flavors and perfume oils, or synthetic products. Perfumes can include blends of various flavors such as lemon and lime flavors, citrus flavors and selected spices (typical cola soft drink flavors). As the fragrance of the lipophilic concentrate or extract, synthetic flavor esters, alcohols, aldehydes, terpenes, sesquiterpenes and the like can be contained.

  When using a fragrance | flavor or a flavor as a flavoring agent, 0.0001-5 mass% in the container-packed non-tea beverage of this invention, Preferably it is 0.0001-3 mass%, More preferably, it is 0.0001-1 mass%. More preferably, it is 0.001-1 mass%, More preferably, it is 0.001-0.5 mass%, Most preferably, it is 0.001-0.2 mass%, Most preferably, it is 0.003-0.18 mass. % Content is preferable.

  The perfume or flavor may form emulsion droplets and then be dispersed in the beverage. That is, it may be an emulsified flavor. Typically, emulsified fragrances are readily available as concentrates or extracts, or in the form of synthetic flavor esters, alcohols, aldehydes, terpenes, sesquiterpenes, and the like. Such emulsified fragrance is preferably contained in the container-packed non-tea beverage of the present invention in an amount of 0.0001 to 5 mass%, more preferably 0.001 to 3 mass%. Typical examples include “Super Emulsion Flavor Series”, Grapefruit 106JX, Lemon 106JX, Orange 106JX, etc., manufactured by Taiyo Kagaku.

  As the fruit juice, fruit juices such as apple, pear, lemon, lime, mandarin, grapefruit, cranberry, orange, strawberry, grape, kui, peach, pineapple, passion fruit, mango, ume, guava, raspberry, cherry are preferred. Particularly preferred are grapefruit, orange, lemon, lime, mandarin, mango, passion fruit and guava juice or mixtures thereof.

  When fruit juice or fruit juice is used as a flavoring agent, it is preferably contained in the container-packed non-tea beverage of the present invention in an amount of 0.001 to 15% by mass, particularly 0.002 to 10% by mass.

  It is preferable to contain a bitter and astringent taste inhibitor in the container-packed non-tea beverage of the present invention because it becomes easier to drink. As the bitter and astringent taste inhibitor, cyclodextrin is preferred. As the cyclodextrin, α-, β-, γ-cyclodextrin and branched α-, β-, γ-cyclodextrin can be used.

  The container-packed non-tea beverage of the present invention can further contain vitamins. Preferred vitamins include vitamin A, vitamin C and vitamin E. Other vitamins such as vitamin D and vitamin B can also be used. Minerals can also be used. Examples of the mineral include calcium, chromium, copper, fluorine, iodine, iron, magnesium, manganese, phosphorus, selenium, silicon, molybdenum and zinc, and magnesium, phosphorus and iron are particularly preferable.

  In addition to the above components, the container-packed non-tea beverage of the present invention includes various esters, pigments, emulsifiers, preservatives, seasonings, gums, oils, amino acids, vegetable extracts, nectar extracts, pH adjusters. In addition, components such as a quality stabilizer and carbon dioxide may be contained alone or in combination of two or more.

  The container-packed non-tea beverage of the present invention preferably has a pH of 2 to 4 at 25 ° C, more preferably 2.8 to 4, even more preferably 3 to 4, still more preferably 3.1 to 4, particularly Preferably it is 3.2-4. When the pH is within the above range, the balance between sourness and low irritation is good and the taste is excellent. It becomes easy. In addition, during long-term storage, it is easy to suppress changes in flavor such as the occurrence of bitterness and astringency, and there are also advantages of excellent stability of non-polymer catechins.

  Non-tea beverages such as carbonated beverages that are soft drinks, beverages containing fruit extracts, juices containing vegetable extracts, near water, sports drinks, isotonic beverages, diet beverages, etc. Based beverages are preferred. A sports drink is generally defined as a drink that can quickly replenish water and minerals lost as sweat after physical exercise.

The container-packed non-tea beverage of the present invention is obtained by filling the beverage described above into a plastic container having an oxygen permeability of 0.001 mL / day · bottle · atm or less. Thereby, a hue change can be prevented more reliably.
Examples of the plastic container include those having a carbon vapor deposition film on the container surface or inner surface, and those having a multilayer structure. Examples of the carbon-deposited film include those obtained by depositing a DLC film (Diamond Like Carbon) on the inner surface of the container, and those having a multilayer structure blended with a polyolefin-based oxygen absorbent, nylon, etc. And a laminated PET layer and a normal PET layer. In addition, as a material of the plastic container, PET is particularly preferable.

  In addition, it is particularly preferable that the head space of the container-packed non-tea beverage of the present invention is replaced with nitrogen from the viewpoint of preventing hue change.

  The container-packed non-tea beverage of the present invention is manufactured under the sterilization conditions stipulated in the Food Sanitation Law if the beverage can be sterilized by heating after filling the container like a metal can, for example. For those that cannot be sterilized by retort, such as paper containers, sterilize the beverage in the same manner as above, for example, a plate heat exchanger, etc. A method such as filling is used. Further, another component may be contained in a container filled with a beverage under aseptic conditions. Furthermore, operations such as returning the pH to acidity under aseptic conditions after heat sterilization of the beverage under neutral conditions are also possible.

(Measurement of non-polymer catechins)
Filtered with a filter (0.8 μm) and then diluted with distilled water, the packed beverage was packed into an octadecyl group-introduced liquid chromatograph L-column TM ODS (4.6 mm × 250 mm: Chemical Substance Evaluation Research Organization) Using a high-performance liquid chromatograph (model SCL-10AVP) manufactured by Shimadzu Corporation and equipped with a gradient method at a column temperature of 35 ° C. The mobile phase A solution is a distilled aqueous solution containing 0.1 mol / L of acetic acid, the B solution is an acetonitrile solution containing 0.1 mol / L of acetic acid, the flow rate is 1 mL / min, the sample injection amount is 20 μL, and the UV detector wavelength is 280 nm. Performed under conditions. The gradient conditions are as follows.

Time (minutes) Liquid A concentration (volume%) Liquid B concentration (volume%)
0 97% 3%
5 97% 3%
37 80% 20%
43 80% 20%
43.50% 100%
48.5 0% 100%
49 97% 3%
60 97% 3%

(Measurement of gallic acid)
A gallic acid-containing composition is diluted with distilled water, filtered through a filter (0.8 μm), and then packed using a high-performance liquid chromatograph (model SCL-10AVP) manufactured by Shimadzu Corporation, in a packed column for octadecyl group-introduced liquid chromatograph L -Column TM ODS (4.6 mmφ × 250 mm: manufactured by Chemical Substance Evaluation Research Organization) was attached, and the column temperature was 35 ° C., and the gradient method using the liquid A and liquid B was performed. The mobile phase A solution was a distilled aqueous solution containing 0.1 mol / L of acetic acid, the B solution was an acetonitrile solution containing 0.1 mol / L of acetic acid, the sample injection amount was 20 μL, and the UV detector wavelength was 280 nm. .

(Measurement of sodium ion content)
Atomic absorption photometry (hydrochloric acid extraction)
A sample (5 g) was placed in 10% hydrochloric acid (so that a 1% hydrochloric acid solution was obtained at the time of constant dissolution), and then fixed with ion-exchanged water and the absorbance was measured.
Wavelength: 589.6nm
Frame: Acetylene-Air

(Measurement of oxygen permeability)
As shown in the schematic diagram in Fig. 2, the lower part of the plastic container 1 that is the measurement sample is drilled, and the sensor part 2 of the device (OX-TRAN2 / 21, MOCON) that measures the amount of oxygen is attached. Was fixed with epoxy resin 3 and the amount of oxygen was measured in an atmosphere of 23 ° C. and an oxygen concentration of 21%.

Reference Examples 1-2
A container-packed acidic beverage was produced according to the formulation shown in Table 1. Sterilization was performed using a UHT sterilizer at 98 ° C. for 30 seconds and then filled into a plastic PET bottle ( ^{* 4} oxygen permeability 0.039 ml / day · bottle · atm).

(Evaluation of color stability)
About the container-packed acidic drink prepared in Reference Examples 1 and 2, a spectrophotometer (model Color Meter ZE-2000, manufactured by Nippon Denshoku Industries Co., Ltd.) was used, and the spectral sensitivity was measured by the XYZ method. As a sample, a packaged acidic beverage immediately after preparation (day 0), a packaged acidic beverage stored at 55 ° C. for 3 days and 6 days, and placed in a 1 cm quartz cell after membrane filtration and b ^* The value was measured. The b ^* values after storage on the 3rd and 6th days are shown in Table 1 as the amount of increase (Δb ^* value) when the b ^* value immediately after preparation (day 0) is 0.

Purified green tea extract (α)
The green tea extract having a catechin content of 30% by mass was subjected to tannase treatment (tannase concentration 2% by mass; reaction temperature 20 ° C.) and spray-dried by a spray drying method. The resulting powder is extracted with a mixed solvent of ethanol and water (water: ethanol = 15: 85) and then purified by adding 8 parts by mass of activated carbon to the mixture to purify the green tea extract. A product (α) was obtained. The purified green tea extract purified product (α) had a gallate content of 44% by mass. The concentration of non-polymer catechins in the solid content was 71% by mass. The solid content was 23.2%. The gallic acid concentration in the solid content was 3.1% by mass.

Purified green tea extract (β)
A green tea extract having a catechin content of 30% by mass was not subjected to tannase treatment and spray-dried by a spray drying method. The resulting powder is extracted with a mixed solvent of ethanol and water (water: ethanol = 15: 85) and then purified by adding 8 parts by mass of activated carbon to the mixture to purify the green tea extract. A product (β) was obtained. The gallate content of the purified green tea extract (β) was 54% by mass. The concentration of non-polymer catechins in the solid content was 71% by mass. The solid content was 23.2%. The gallic acid concentration in the solid content was 0.33%.

  As can be understood from Table 1, it was found that the color stability was improved in the beverage containing the purified product of the green tea extract with the gallate content adjusted to 47% by mass or less.

Examples 1-2 and Comparative Examples 1-3
Container-packed non-tea beverages were produced according to the formulation shown in Table 2. In Example 2, the head space was replaced with nitrogen.

* 1: Purified product A of green tea extract
Non-polymer catechin concentration per solid content of 60% by mass, gallate body ratio of 46% by mass, and 15% by mass of non-polymer catechins in the purified product A of green tea extract;
Production method: A green tea extract having a catechin content of 30% by mass was spray-dried by a spray drying method. The obtained powder was extracted with a mixed solvent of ethanol and water (water: ethanol = 15: 85) and then purified by adding 8 parts by mass of activated carbon to the mixed solution. A purified product A was obtained. The gallic acid concentration was 0.59% by mass.

* 2: Purified product B of green tea extract
Non-polymer catechin concentration per solid content of 40% by mass, gallate body ratio of 46% by mass, catechins in purified product B of green tea extract 15% by mass;
Production method: A green tea extract having a catechin content of 30% by mass was spray-dried by a spray drying method. The obtained powder was extracted with catechins with a mixed solvent of ethanol and water (water: ethanol = 60: 40) and then purified by adding 11 parts by mass of activated carbon to the mixed solution. A purified product B was obtained. The gallic acid concentration was 0.35% by mass.

* 3: It has a five-layer structure in which PET and a barrier layer are sequentially laminated, and the barrier layer is composed of oxyblock [SIRIUS101 (blend of polyolefin oxygen absorber and MXD6 nylon)] * 4 : Consists of PET only

(Hue measurement)
About the container-packed non-tea beverage prepared in each Example and Comparative Example, a spectrophotometer (type Color Meter ZE-2000, manufactured by Nippon Denshoku Industries Co., Ltd.) was used, and the spectral sensitivity was measured by the XYZ method. As a sample, a container-packed non-tea beverage immediately after preparation (initial), a container-packed non-tea beverage when stored at 55 ° C. for 5 days, 7 days and 14 days, and after membrane filtration into a 1 cm quartz cell The b ^* value was measured. The results are shown in Table 3.

  As an index of the effect of suppressing the hue change of the container-packed non-tea beverage, the hue improvement rate between the container-packed non-tea beverages containing the same concentration of catechin was calculated by the following formula (1). The results are shown in Table 4 and FIG.

Hue improvement rate (%) = (b ^* value of the single-layer PET - b ^* values of the multi-layered PET) / initial b ^* value × 100 (1)

From Example 2, it was found that by replacing the headspace with nitrogen, the hue stability is further improved even when stored for a long period of time, and the hue stability is further improved.
Also, from Tables 2 to 4 and FIG. 1, a beverage containing non-polymer catechins at a high concentration of 60% by mass or more was filled into a multilayer container having an oxygen permeability of 0.001 mL / day · bottle · atm or less. The container-packed non-tea beverage was stable for a long time with little change in hue. In contrast, even when a beverage containing less than 60% by mass of non-polymer catechins is filled in a multilayer container having an oxygen permeability of 0.001 mL / day · bottle · atm or less, the hue change is large and the hue stability is high. It turned out to be insufficient.

Example 3 and Comparative Example 4
In the container-packed non-tea beverage of Example 1, Example 3 was obtained by adding gallic acid as a reagent so that the content of gallic acid in the beverage was 15 mg / 100 mL. Further, in the container-packed non-tea beverage of Example 1, Comparative Example 4 was obtained by adding gallic acid as a reagent so that the content of gallic acid in the beverage was 20 mg / 100 mL. Then, as a result of conducting these two drinking tests (n = 5), it was found that the gallic acid concentration in the beverage was acceptable up to 15 mg / 100 mL, but that an off-flavor appeared at 20 mg / 100 mL.

It is a figure which shows the relationship between preservation days and a hue improvement rate. It is a figure explaining the measuring method of the oxygen permeation amount of a container.

Explanation of symbols

1: Plastic container 2: Sensor part of oxygen measuring device 3: Epoxy resin joint

Claims (4)

(A) Non-polymer catechin concentration is 60% by mass or more as a solid content, and (B) gallate content in non-polymer catechins is 10 to 47% by mass.
A beverage containing at least a purified product of tannase-treated green tea extract, filled in a plastic container having an oxygen permeability of 0.001 mL / day · bottle · atm or less,
(C) The content of non-polymer catechins in the beverage is 0.072 to 1.0% by mass,
(D) The gallic acid concentration in the beverage is 1 to 15 mg / 100 mL
Is a non-tea beverage packaged in a container.   Furthermore, the container non-tea drink of Claim 1 containing 0.005-10 mass% of sweeteners.   The container-packed non-tea beverage according to claim 1 or 2, having a pH of 2 to 4 at 25 ° C.   The mass ratio [(b) / (a)] of (b) epicatechins and (a) non-polymer catechins in the beverage is 0.7 to 1.0. The container-packed non-tea beverage according to any one of the above.

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