WO2010109814A1 - ポリフェノール組成物 - Google Patents
ポリフェノール組成物 Download PDFInfo
- Publication number
- WO2010109814A1 WO2010109814A1 PCT/JP2010/001907 JP2010001907W WO2010109814A1 WO 2010109814 A1 WO2010109814 A1 WO 2010109814A1 JP 2010001907 W JP2010001907 W JP 2010001907W WO 2010109814 A1 WO2010109814 A1 WO 2010109814A1
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- WIPO (PCT)
- Prior art keywords
- mass
- polyphenol composition
- polyphenol
- total amount
- flavonol
- Prior art date
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- 150000008442 polyphenolic compounds Chemical class 0.000 title claims abstract description 155
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Images
Classifications
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- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
- A61K31/7048—Compounds having saccharide radicals and heterocyclic rings having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin, digitoxin or digoxin
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- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/16—Tea extraction; Tea extracts; Treating tea extract; Making instant tea
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/52—Adding ingredients
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/105—Plant extracts, their artificial duplicates or their derivatives
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- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
- A61K31/353—3,4-Dihydrobenzopyrans, e.g. chroman, catechin
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- A61K36/18—Magnoliophyta (angiosperms)
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Definitions
- the present invention relates to a polyphenol composition obtained from Camellia sinensis.
- polyphenols are known to have anti-oxidant power and are expected to have effects such as anti-arteriosclerosis, anti-allergy, blood flow enhancement and the like, and thus are recognized as important ingredients in health foods.
- Such a polyphenol can be obtained as a polyphenol fraction by, for example, contacting an aqueous extract of oolong tea with activated carbon or an adsorption resin to remove non-polymer catechins (Patent Document 1).
- the present invention is a polyphenol composition containing a flavonol aglycone derived from Camellia sinensis and a flavonol glycoside, The following (A) and (B); (A) The total amount of flavonol aglycone contained in the solid content of the polyphenol composition after hydrolysis, measured by high performance liquid chromatography. (B) The total amount of polyphenols contained in the solid content of the polyphenol composition, measured by the iron tartrate method. The mass ratio [(B) / (A)] is 0.01 to 18. A polyphenol composition is provided.
- the present invention also provides a food or drink containing the polyphenol composition.
- the present invention further relates to a method for producing the polyphenol composition, Adsorbing the Camellia sinensis extract on a synthetic adsorbent; Bringing the first organic solvent aqueous solution into contact with the synthetic adsorbent to elute the first fraction; The synthetic adsorbent after eluting the first fraction is brought into contact with a second organic solvent aqueous solution having a higher hydrophobicity than the first organic solvent aqueous solution, so that a second fraction containing a polyphenol composition is obtained.
- the present invention provides a production method including a step of eluting the lysate.
- FIG. 1 is a diagram showing the transition of blood glucose level after meal in Test Example 1.
- FIG. 2 is a diagram showing an ⁇ -amylase activity inhibitory action in Test Example 2.
- FIG. 3 is a diagram showing the lipase activity inhibitory action in Test Example 3.
- the inventors of the present invention have a remarkable taste unique to polyphenols when the content ratio of flavonol aglycone and flavonol glycoside in the polyphenol composition is within a specific range. It was found to be reduced.
- a Camellia sinensis-derived polyphenol composition in which the pouch taste peculiar to polyphenol is remarkably reduced despite containing a high concentration of polyphenol.
- This polyphenol composition has a bitter taste that cannot be tasted with non-polymer catechins or flavonols alone, but even if the bitterness is alleviated with sweeteners and seasonings, there is no sense of discomfort in the aftertaste. It is suitable for regular food as a health food.
- polyphenol refers to those measured by the iron tartrate method, and specific examples include flavonols, flavan-3-ols, proanthocyanidins, and polymers thereof. Flavonols include quercetin, myricetin, kaempferol and their glycosides, flavan-3-ols include catechins, and polymers include theaflavins, oolong homobisflavans. Etc. are included.
- “Camellia sinensis” is a tea tree belonging to the genus Camellia belonging to the camellia family, and can be roughly classified into non-fermented tea, semi-fermented tea, and fermented tea depending on the processing method. Among these, non-fermented tea is preferable.
- non-fermented tea genus Camellia, for example, C. var. Sinensis (including Yabukita species), C. var. Assamica and teas made from teas thereof, stem tea, stick tea, bud tea Green tea such as sencha,nadoha, strawberry tea and kettle tea is exemplified.
- Examples of the semi-fermented tea include iron kannon, color type, golden katsura, and wuyaniwa tea, which are collectively called oolong tea.
- Examples of fermented tea include Darjeeling, Uba, and Keyman called black tea.
- “non-fermented tea, semi-fermented tea, fermented tea, green tea, oolong tea, black tea” is not a tea extract used for drinking, but a tea raw material for obtaining the tea extract.
- “flavonol aglycone” is a general term for a mixture composed of myricetin, quercetin and kaempferol.
- flavonol glycoside refers to a glycoside having myricetin, quercetin, and kaempferol as an aglycone skeleton, and includes those obtained by further binding a sugar to these glycosides.
- the “total amount of flavonol aglycone” in the present specification is based on the total amount of myricetin, quercetin and kaempferol contained in the hydrolyzed solution of the polyphenol composition containing these flavonol aglycone and flavonol glycoside. Defined.
- the polyphenol composition of the present invention is characterized by containing the following (A) and (B) in a specific ratio.
- (A) is the total amount of flavonol aglycone contained in the solid content of the polyphenol composition after hydrolysis as measured by high performance liquid chromatography (hereinafter referred to as “(A) total amount of flavonol aglycone”).
- the total amount of (A) flavonol aglycone is preferably 0.7 to 50% by mass, from the viewpoint of flavor and solubility in water, 1.5 to 45% by mass, further 5 to 40% by mass, It is preferably 7 to 35% by mass, particularly 9 to 25% by mass.
- (B) is the total amount of polyphenol contained in the solid content of the polyphenol composition (hereinafter referred to as “(B) total amount of polyphenol”) measured by the iron tartrate method.
- the total amount is preferably 5 to 95% by mass, from the viewpoint of flavor and solubility in water, 10 to 90% by mass, further 15 to 80% by mass, further 20 to 70% by mass, particularly 25 to 40% by mass.
- solid content refers to a residue obtained by drying a polyphenol composition for 3 hours with an electric constant temperature dryer at 105 ° C. to remove volatile substances such as water.
- the mass ratio [(B) / (A)] of the above (A) and (B) is 0.01 to 18, but from the viewpoint of reducing the taste, 0.01 to 16, and further 0.1 to 11, more preferably 0.3 to 9, further preferably 0.5 to 7, and particularly preferably 1 to 5.
- “(A) total amount of flavonol aglycone” and “(B) total amount of polyphenol” were quantified by the method described in the examples below.
- the polyphenol composition of the present invention can contain rutin, but the polyphenol composition of the present invention is a conventional extract obtained by extraction from Camellia sinensis (for example, green tea extraction) from the viewpoint of reducing taste. It is preferable that the content of rutin is higher than that of the product, black tea extract and oolong tea extract.
- the content of rutin in the solid content of the polyphenol composition is preferably 0.4 to 30% by mass, and from the viewpoint of further reducing the taste, 0.8 to 25 It is preferable that the content is 2% by mass, 2 to 20% by mass, 4 to 15% by mass, particularly 6 to 15% by mass.
- rutin is a kind of flavonol glycoside in which ⁇ -rutinose (6-O- ⁇ -L-rhamnosyl-D- ⁇ -glucose) is bound to the oxygen atom at the 3-position of quercetin. It is.
- the polyphenol composition having the mass ratio [(B) / (A)] and (C) rutin content within the above range is obtained by, for example, fractionating a Camellia sinensis extract by the following steps (1) to (3).
- Camellia sinensis extract used in the step (1) examples include an extract extracted from Camellia sinensis with hot water or a water-soluble organic solvent.
- the Camellia sinensis extract may be used as it is, or dried or concentrated.
- the tea extract examples include liquid, slurry, semi-solid, and solid.
- the extraction method a known method such as stirring extraction, column extraction, drip extraction or the like can be employed.
- a Camellia sinensis extract or a concentrate thereof can be obtained by dissolving or diluting a concentrate of Camellia sinensis extract in water or an organic solvent. May be used in combination.
- the concentrate of the Camellia sinensis extract is a product obtained by partially removing the solvent from the Camellia sinensis extract.
- JP-A-59-219384, JP-A-4-20589, and JP-A-5 -260907 and JP-A-5-306279 are commercially available products.
- Commercially available products may also be used as the concentrate of the Camellia sinensis extract, such as “Polyphenone” from Mitsui Norin Co., Ltd., “Theafranc” from ITO EN, “Sunphenon” from Taiyo Kagaku Co., Ltd., etc. Of green tea extract.
- a green tea extract is preferably used as the Camellia sinensis extract.
- the Camellia sinensis extract may be treated with tannase as necessary (for example, Japanese Patent Application Laid-Open No. 2004-321105), or further treated with at least one selected from activated carbon, acid clay and activated clay after the tannase treatment. Good (for example, JP 2007-282568 A).
- the synthetic adsorbent is preferably made of a polymer having an ion exchange capacity of less than 1 meq / g and having an insoluble three-dimensional crosslinked structure.
- the particle shape of the synthetic adsorbent may be any shape such as a sphere or a non-uniform shape, but is preferably a sphere in order to satisfy a good separation condition.
- Such a synthetic adsorbent may be produced by a known method, but a commercially available product may be used.
- Examples of commercially available synthetic adsorbents include Amberlite XAD4, XAD16HP, XAD1180, XAD2000 (supplier: Rohm & Haas, USA), Diaion HP20, HP21 (Mitsubishi Chemical Corporation), Sepabeads SP-850, SP-825.
- Acrylic type TOYOPEARL, HW- Examples thereof include polyvinyl type such as 40C (manufactured by Tosoh Corporation); dextran type such as SEPHADEX and LH-20 (Pharmacia).
- the matrix is preferably styrene, methacrylic, acrylic, or polyvinyl, and styrene is particularly preferable from the viewpoint of separability.
- the amount of the synthetic adsorbent used is such that the ratio of the total mass of non-polymer catechins in the Camellia sinensis extract to the total capacity of the synthetic adsorbent is 20 to 60 g / L, more preferably 25 to 55 g / L, especially 30 It is preferable from the viewpoint of separation ability to select an amount of ⁇ 50 g / L.
- step (1) a synthetic adsorbent is added to a Camellia sinensis extract, stirred and adsorbed, and then continuously collected using a batch method in which the synthetic adsorbent is collected by filtration or a column packed with the synthetic adsorbent.
- a column method in which adsorption treatment is performed can be employed, but a continuous treatment method using a column is preferred from the viewpoint of productivity.
- the concentration of non-polymer catechins in the Camellia sinensis extract is preferably adjusted to 0.5 to 10% by mass, particularly preferably 0.8 to 5% by mass. It is preferable from the viewpoint.
- the Camellia sinensis extract may be concentrated or diluted as necessary.
- first and second organic solvent aqueous solutions include aqueous solutions of organic solvents such as alcohols such as ethanol and methanol, ketones such as acetone, and esters such as ethyl acetate.
- the second organic solvent aqueous solution is not particularly limited as long as it is more hydrophobic than the first organic solvent aqueous solution.
- an aqueous solution containing an organic solvent having more carbon atoms than the first organic solvent can be used.
- the organic solvent concentration in the first and second organic solvent aqueous solutions can be set as appropriate.
- the organic solvent concentration in the first organic solvent aqueous solution is preferably 10 to 45% by mass, particularly
- the organic solvent concentration in the second organic solvent aqueous solution is preferably 20 to 40% by mass, and preferably 50 to 98% by mass, and particularly preferably 50 to 95% by mass.
- the liquid passing condition of the organic solvent aqueous solution can be appropriately set, and the liquid passing condition of the second organic solvent aqueous solution may be the same as or different from that of the first organic solvent aqueous solution.
- the flow rate (SV) is preferably 0.5 to 10 [h ⁇ 1 ], particularly preferably 0.5 to 5 [h ⁇ 1 ].
- the passing ratio (BV) is preferably 0.5 to 10 [v / v], particularly preferably 1 to 4 [v / v] with respect to the capacity of the synthetic adsorbent.
- a hydrophobic polyphenol composition can be obtained by concentrating the second fraction. Concentration is performed by distillation, vacuum distillation, rectification, thin-film distillation, membrane concentration, or the like. Is possible. In addition, before or after concentration, impurities may be separated by filtration and / or centrifugation as necessary.
- a polyphenol composition various things, such as a solid, a semi-solid, a liquid, a slurry, are illustrated.
- the polyphenol fraction is blended with at least one selected from the Camellia sinensis extract, its concentrate and purified product thereof, and other polyphenol compositions, and a desired mass ratio [(B ) / (A)] and (C)
- the rutin content may be adjusted.
- the purified product of Camellia sinensis extract refers to a product obtained by removing precipitates from the Camellia sinensis extract or its concentrate using a solvent or a column.
- Examples of the form of the Camellia sinensis extract, the concentrate thereof and the purified product thereof include various forms such as a solid, an aqueous solution and a slurry.
- the “camellia sinensis extract, its concentrate and purified product thereof” to be blended in the polyphenol fraction may be obtained from any of the same and different types of camelia sinensis as the polyphenol fraction.
- examples of the “other polyphenol composition” include polyphenol fractions obtained under different fractionation conditions and polyphenol fractions obtained from different types of polyphenol-containing plants.
- the polyphenol composition of the present invention has a reduced pungency specific to polyphenols despite containing a high concentration of polyphenols.
- the polyphenol composition of the present invention has a highly tasteful bitterness that cannot be tasted with non-polymer catechins or flavonols alone, but even after alleviating the bitterness with sweeteners and seasonings, the aftertaste is uncomfortable. Does not occur. Therefore, the polyphenol composition of this invention can be mix
- the content of the polyphenol composition in the food and drink of the present invention can be appropriately selected depending on the type and form of the food, but is usually 0.1 to 10% by mass in terms of solid content.
- Examples of the beverage of the present invention include tea beverages and non-tea beverages.
- tea beverages include green tea beverages, oolong tea beverages, and black tea beverages.
- Non-tea beverages include soft drinks (eg fruit juice, vegetable juice, sports drinks, isotonic drinks, carbonated drinks), non-alcoholic drinks such as coffee drinks, nutritional drinks, and beauty drinks, beer, wine, Examples include alcoholic beverages such as sake, plum wine, happoshu, whiskey, brandy, shochu, rum, gin, and liqueurs.
- the beverage of the present invention can be made into a packaged beverage by directly or diluting the polyphenol composition.
- an organic acid and / or a salt thereof is blended. May be.
- the organic acid may be aromatic, aliphatic or lactone as long as it has one or more carboxyl groups in the molecule, but is preferably hydroxycarboxylic acid or its lactone.
- Specific examples include ascorbic acid, erythorbic acid, citric acid, gluconic acid, succinic acid, tartaric acid, lactic acid, adipic acid, fumaric acid, malic acid, etc., among which ascorbic acid, citric acid, gluconic acid, tartaric acid, lactic acid Malic acid is preferred.
- the salt include alkali metal salts, alkaline earth metal salts, and amino acid salts. Among them, alkali metal salts are preferable, and sodium salts and potassium salts are particularly preferable.
- the organic acid and / or salt thereof is preferably blended so that the organic acid ion concentration in the beverage of the present invention is 1 to 100 mmol / L.
- the organic acid ion concentration is preferably 2 to 95 mmol / L, more preferably 5 to 90 mmol / L, more preferably 10 to 85 mmol / L, and more preferably 15 to 80 mmol / L from the viewpoint of improving solubility and improving appearance. More preferably, it is 18 to 70 mmol / L, and particularly preferably 20 to 60 mmol / L.
- the organic acid ion concentration is, for example, the total concentration of carboxyl anions (COO—) in a dissociated state from the first stage to the n-th stage when the organic acid is an n-valent polyvalent carboxylic acid.
- general additives used when preparing food and drink for example, antioxidants, bitterness and taste inhibitors, vitamins, fragrances, various esters, inorganic acids, inorganic acid salts, inorganic salts , Pigments, emulsifiers, preservatives, seasonings, sweeteners, acidulants, fruit juice extracts, vegetable extracts, nectar extracts, pH adjusters, quality stabilizers, and other plant extracts such as coffee extracts alone Or in combination.
- the beverage of the present invention preferably has a pH (25 ° C.) of 2 to 9, and from the viewpoint of flavor and appearance, it is 2.5 to 8, more preferably 3 to 7.0, particularly 3.5 to 6.5. Preferably there is.
- a container for filling the beverage of the present invention a molded container mainly composed of polyethylene terephthalate (so-called PET bottle), a metal can, a paper container combined with a metal foil or a plastic film, a bottle, etc.
- PET bottle polyethylene terephthalate
- a normal packaging container is mentioned.
- packaged beverages are manufactured under the sterilization conditions stipulated in the applicable regulations (Food Sanitation Law in Japan) if they can be sterilized by heating after filling in containers such as metal cans. it can.
- Food Sanitation Law in Japan for PET bottles and paper containers that cannot be sterilized by retort, sterilize under the same conditions as above, for example, after sterilizing at high temperature and short time with a plate heat exchanger, etc.
- the method can be adopted.
- the pH can be returned to neutrality under aseptic conditions, or after sterilization by heating under neutral conditions, the pH can be returned to acidic conditions under aseptic conditions.
- the form of the food of the present invention is not particularly limited as long as it is an easily ingested form.
- it is a paste, powder, liquid, gel, slurry, granulated product, granule, tablet, capsule, etc.
- the solid material is exemplified.
- the polyphenol composition of the present invention may be pulverized by spray drying, freeze drying, or the like, by removing the solvent by vacuum concentration, thin film concentration, or the like.
- Examples of the food of the present invention include confectionery (for example, baked confectionery such as bread, cake, cookies, biscuits, chewing gum, chocolate, candy), desserts (for example, jelly, yogurt, ice cream), retort food, seasoning
- confectionery for example, baked confectionery such as bread, cake, cookies, biscuits, chewing gum, chocolate, candy
- desserts for example, jelly, yogurt, ice cream
- retort food for example, seasoning
- examples of the ingredients for example, sauce, soup, dressing, mayonnaise, cream.
- the food of the present invention includes general food additives used in preparing foods, such as minerals, vitamins, amino acids, sweeteners, acidulants, flavorings, dried fruits or vegetables, fruit juices, vegetable juices or These powder dry products etc. can be mix
- 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 ⁇ L
- the UV detector wavelength was 280 nm.
- the gradient conditions are as follows.
- the sample solution was filtered with a filter (0.45 ⁇ m), and a column (Shimpach VP ODS, 150 ⁇ 4.6 mm ID) was installed using a high performance liquid chromatograph (model Waters 2695, manufactured by WATERS). Analysis was carried out by a gradient method at a temperature of 40 ° C.
- the mobile phase A solution was a distilled aqueous solution containing 0.05% by mass of phosphoric acid
- the B solution was a methanol solution
- the flow rate was 1 mL / min
- the sample injection amount was 10 ⁇ L
- the UV detector wavelength was 368 nm.
- the gradient conditions are as follows.
- Example 1 Polyphenol composition A Green tea leaves (large leaf seeds) were extracted with hot water, and then green tea extract A was obtained by spray drying. “Green tea extract A” had a non-polymer catechin concentration of 30.8% by mass and a caffeine concentration of 5.5% by mass. Subsequently, it diluted with ion-exchange water so that the non-polymer catechin density
- SP-70 synthetic adsorbent
- polyphenol composition A has (A) flavonol aglycone total amount of 19.2% by mass, (B) polyphenol total amount of 33.1% by mass, and a mass ratio [(B) / (A)] of 1.72. C) The rutin content was 10.6% by mass.
- the “polyphenol composition A” was used in the products 1 to 5 of the present invention described later.
- Green tea leaves (large leaf seeds) were extracted with hot water, and then green tea extract B was obtained by spray drying.
- Green tea extract B had a non-polymer catechin concentration of 30.3% by mass and a caffeine concentration of 5.5% by mass. Subsequently, it diluted with ion-exchange water so that the non-polymer catechin density
- 8000 g of the diluted solution of “green tea extract B” was adsorbed on 2000 mL of a synthetic adsorbent (SP-70, manufactured by Mitsubishi Chemical Corporation) packed in a column (inner diameter 89.2 mm ⁇ height 600 mm, volume 3748 mL). .
- SP-70 synthetic adsorbent
- Polyphenol composition B has a total amount of (A) flavonol aglycone of 18.3% by mass, (B) a total amount of polyphenol of 34.0% by mass, and a mass ratio [(B) / (A)] of 1.86, ( C) The rutin content was 9.3% by mass.
- the “polyphenol composition B” was used in the product 6 of the present invention described later.
- Example 3 Polyphenol composition C
- the “green tea extract B” obtained in Example 2 was diluted with ion-exchanged water so that the non-polymer catechin concentration was 1% by mass.
- 2400 g of the diluted solution of “green tea extract B” was adsorbed on 600 mL of a synthetic adsorbent (SP-70, manufactured by Mitsubishi Chemical Corporation) packed in a column (inner diameter 60.6 mm ⁇ height 330 mm, volume 951 mL).
- SP-70 synthetic adsorbent
- 900 mL of ion exchange water and 2700 mL of 25 mass% ethanol were sequentially passed through the synthetic adsorbent to elute non-polymer catechins.
- Polyphenol composition C has (A) flavonol aglycone total amount of 23.3 mass%, (B) polyphenol total amount of 34.1 mass%, mass ratio [(B) / (A)] of 1.46, ( C) The rutin content was 7.4% by mass.
- the “polyphenol composition C” was used in the product 7 of the present invention described later.
- Example 4 Polyphenol composition D 0.08 parts by mass of the polyphenol composition A obtained in Example 1 and 0.12 parts by mass of a commercially available green tea extract (EGCg preparation, manufactured by DSM Nutritional Products, hereinafter referred to as “green tea extract a”) were mixed. In this way, “polyphenol composition D” was obtained.
- the “green tea extract a” has (A) a total amount of flavonol aglycone of 0.0% by mass and (B) a total amount of polyphenol of 110.5% by mass * (* analytical value of iron tartrate method).
- Polyphenol composition D has (A) flavonol aglycone total amount of 7.7% by mass, (B) polyphenol total amount of 79.5% by mass, and mass ratio [(B) / (A)] is 10.32. C) The rutin content was 4.2% by mass. The “polyphenol composition D” was used in the product 8 of the present invention described later.
- Example 5 Polyphenol composition E 5 g of commercially available tea leaves (Nuwara area, manufactured by Brookbond House) were added to 500 g of boiling water, and the mixture was stirred and extracted at 150 rpm for 5 minutes. Subsequently, the solution was suction filtered with No. 2 filter paper, and the amount of collected liquid was measured, followed by ice cooling (liquid temperature of 25 ° C. or lower). Then, the water
- Polyphenol composition E has (A) flavonol aglycone total amount of 1.9% by mass, (B) polyphenol total amount of 17.7% by mass, and mass ratio [(B) / (A)] is 9.32. C) The rutin content was 1.3% by mass. The “polyphenol composition E” was used in the product 9 of the present invention described later.
- Example 6 Polyphenol composition F 5 g of commercially available black tea leaves (AS CTC, manufactured by Brook Bond House) were added to 500 g of boiling water, followed by stirring and extraction at 150 rpm for 5 minutes. Subsequently, the solution was suction filtered with No. 2 filter paper, and the amount of collected liquid was measured, followed by ice cooling (liquid temperature of 25 ° C. or lower). Then, the water
- black tea extract b Black tea extract b 0.39 mass part and the polyphenol composition A 0.025 mass part obtained in Example 1 were mixed, and the "polyphenol composition F" was obtained.
- Polyphenol composition F has (A) a total amount of flavonol aglycone of 1.4% by mass, (B) a total amount of polyphenol of 13.3% by mass, and a mass ratio [(B) / (A)] of 9.5, ( C) The rutin content was 0.9% by mass.
- the “polyphenol composition F” was used in the product 10 of the present invention described later.
- Example 7 Polyphenol composition G 5 g of commercially available Oolong tea leaves (Oolong tea, manufactured by Kokutaro Co., Ltd.) are added to 500 g of boiling water, stirred and extracted at 150 rpm for 5 minutes, suction filtered with No. 2 filter paper, and the amount of collected liquid is measured. °C or less). Thereafter, water was removed by freeze-drying to obtain an oolong tea extract.
- the obtained Oolong tea extract is hereinafter referred to as “Oolong tea extract a”. 0.39 parts by mass of Oolong tea extract a and 0.025 parts by mass of the polyphenol composition A obtained in Example 1 were mixed to obtain “polyphenol composition G”.
- the “polyphenol composition G” has a total amount of (A) flavonol aglycone of 1.6% by mass, (B) total amount of polyphenol of 14.7% by mass, and a mass ratio [(B) / (A)] of 9.19. C) The rutin content was 0.8% by mass.
- the “polyphenol composition G” was used in the product 11 of the present invention described later.
- Example 8 Polyphenol composition H 0.05 part by mass of the polyphenol composition A obtained in Example 1 and 0.138 part by mass of the green tea extract a were mixed to obtain “polyphenol composition H”.
- the “polyphenol composition H” has (A) 5.1% by mass of flavonol aglycone, (B) 89.9% by mass of polyphenol, and a mass ratio [(B) / (A)] of 17.63, C) The rutin content was 2.8% by mass.
- the “polyphenol composition H” was used in the product 12 of the present invention described later.
- Example 9 Polyphenol composition I 0.01 parts by mass of the polyphenol composition A obtained in Example 1 and 0.43 parts by mass of black tea extract a were mixed to obtain “polyphenol composition I”.
- “Polyphenol composition I” has a total amount of (A) flavonol aglycone of 1.3% by mass, (B) a total amount of polyphenol of 17.2% by mass, and a mass ratio [(B) / (A)] of 13.23, ( C) The rutin content was 0.9% by mass.
- the “polyphenol composition I” was used in the product 13 of the present invention described later.
- Example 10 Polyphenol composition J 0.01 parts by mass of the polyphenol composition A obtained in Example 1 and 0.44 parts by mass of the black tea extract b were mixed to obtain “polyphenol composition J”.
- “Polyphenol composition J” has (A) flavonol amount aglycone total 0.7 mass%, (B) polyphenol total amount 12.5 mass%, mass ratio [(B) / (A)] is 17.85, (C) The rutin content was 0.5% by mass.
- the “polyphenol composition J” was used in the product 14 of the present invention described later.
- Example 11 Polyphenol composition K 0.01 parts by mass of the polyphenol composition A obtained in Example 1 and 0.41 parts by mass of Oolong tea extract a were mixed to obtain “polyphenol composition K”.
- the “polyphenol composition K” has a total amount of (A) flavonol aglycone of 0.9% by mass, (B) a total amount of polyphenol of 14.0% by mass, and a mass ratio [(B) / (A)] of 15.56, ( C) The rutin content was 0.4% by mass.
- the “polyphenol composition K” was used in the product 15 of the present invention described later.
- Green tea extract b A commercially available green tea extract (Polyphenone 70A, manufactured by Mitsui Norin Co., Ltd., hereinafter referred to as “green tea extract b”) was used.
- the green tea extract b has (A) a flavonol aglycone total amount of 1.1% by mass, (B) a polyphenol total amount of 99.0% by mass, and a mass ratio [(B) / (A)] of 90.00, (C) The rutin content was 0.1% by mass. “Green tea extract b” was used in Comparative Product 1 described later.
- Black tea extract a was used. Black tea extract a has (A) 0.9% by mass of flavonol aglycone, (B) 16.8% by mass of polyphenol, and mass ratio [(B) / (A)] is 18.67, (C) The rutin content was 0.7% by mass. “Tea extract a” was used in Comparative product 2 described later.
- Black tea extract b was used.
- the black tea extract b has (A) a total amount of flavonol aglycone of 0.3% by mass, (B) a total amount of polyphenol of 12.0% by mass, and a mass ratio [(B) / (A)] of 40.00, (C) The rutin content was 0.2% by mass.
- Tea extract b was used in comparative product 3 described later.
- Oolong tea extract a was used.
- mass ratio [(B) / (A)] is 27.00
- (C) The rutin content was 0.1% by mass.
- “Oolong tea extract a” was used for the comparative product 4 described later.
- Comparative Example 5 600 g of oolong tea leaves were extracted by a column method with a 0.15% by weight aqueous sodium bicarbonate solution (95 ° C.) to obtain about 6000 g of an extract.
- the liquid temperature was kept at 60 to 65 ° C., and the solution was passed through 400 g of granular activated carbon (Kuraray Co., Ltd., GW-H32 / 60) to selectively remove non-polymerized catechins and caffeine.
- the passing liquid was concentrated under reduced pressure to prepare about 900 g of a tea extract of Brix 10 or more to obtain “Oolong tea extract b”.
- “Oolong tea extract b” has (A) flavonol aglycone total amount of 0.84 mass%, (B) polyphenol total amount of 19.4 mass%, mass ratio [(B) / (A)] is 23.1, ( C) The rutin content was 0.18% by mass. In addition, “Oolong tea extract b” was used for the comparative product 5 described later.
- Green tea extract c has (A) a total amount of flavonol aglycone of 1.5% by mass, (B) a total amount of polyphenol of 47.7% by mass, and a mass ratio [(B) / (A)] of 32.49. C) The rutin content was 0.96% by mass.
- the “green tea extract c” was used for the comparative product 6 described later.
- a baked confectionery was prepared using the polyphenol composition A of Example 1.
- Material ⁇ 25 parts by mass of skim milk powder, 25 parts by mass of unsalted butter, 29 parts by mass of white sugar, 45 parts by mass of margarine
- a mixer [N50 MIXER (5 coat mixer) manufactured by Hobart] using a beater.
- the dough having a specific gravity of 0.9 was prepared by further stirring at a medium speed.
- the material ⁇ while stirring the material ⁇ at a low speed for 30 seconds, the melted egg was added in three portions. After adding the first egg, stirring was performed at low speed for 30 seconds.
- Test example 1 Inhibitory effect on increase in blood glucose level after meal
- Male mice C57BL / 6J (7 weeks old) were preliminarily raised for 6 days and fasted for 16 hours before starting the test, followed by 4 groups (Example 1 group, Comparative example 6 group, Comparative example 5). Blood was collected by dividing into a group, a control group (water), and each group n 5).
- the preparation obtained in Example 1 was dissolved in a 20% by mass aqueous ethanol solution and orally administered as 0.57 mg / g body weight.
- the Comparative Example 6 group the preparation obtained in Comparative Example 6 was dissolved in a 20% by mass aqueous ethanol solution and orally administered at 0.39 mg / g body weight.
- Comparative Example 5 group the preparation obtained in Comparative Example 5 was dissolved in a 20% by mass ethanol aqueous solution and orally administered as 1.00 mg / g body weight. On the other hand, 20% by mass ethanol was orally administered to the control group. Then, each sample was orally administered to a mouse immediately after administration of a fat emulsion having the composition shown in Table 3 so that the body weight was 40 mg / g.
- Test example 2 ⁇ -Amylase activity inhibitory effect ⁇ -Amylase activity was measured by the following method.
- Enzyme 50 U / mL Porcine pancreatic amylase (dissolved in buffer)
- Substrate 20mg Starch Azure (in 80 ⁇ L buffer)
- Buffer 40 mM phosphate buffer (containing 20 mM NaCl) (pH 7.0)
- Inhibitor formulation obtained in Example 1 (test sample) or formulation obtained in Comparative Examples 5 and 6 (control sample) (dissolved in 20% EtOH) procedure: (1) Mix the substrate 20mg / 80 ⁇ L and the inhibitor 10 ⁇ L in equal amounts, preincubate for 5 minutes at 37 °C (2) Add 10 ⁇ L of enzyme solution and react for 15 minutes at 37 °C (3) 100 mM phosphate buffer (pH 4.3) ) Add 900 ⁇ L (4) Centrifuge the reaction mixture and measure the supernatant at a wavelength of 595 nm
- Test example 3 Lipase activity inhibitory effect The lipase activity was measured by the following method. Enzyme: 50 U / mL porcine pancreatic lipase (Sigma type II dissolved in buffer) Substrate: 0.1M 4-Methylumbelliferyl oleate (dissolved in DMSO) Buffer: 13 mM Tris-HCl (pH 8.0) containing 150 mM NaCl and 1.36 mM CaCl 2 Inhibitor: Preparation obtained in Example 1 or preparation obtained in Comparative Examples 5 and 6 (dissolved in 20% EtOH) Procedure: (1) Add 60 ⁇ L of buffer solution and 20 ⁇ L of substrate to a microplate at 25 ° C.
- Example 1 group inhibited lipase activity strongly compared with Comparative Example 6 group and Comparative Example 5 group.
- the polyphenol composition of the present invention has excellent postprandial blood glucose level inhibitory action, ⁇ -amylase activity inhibitory action, and lipase activity inhibitory action. It is useful as an active ingredient of a medicament for suppressing blood pressure, suppressing blood neutral fat elevation, preventing obesity and the like.
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Abstract
Description
次の(A)及び(B);
(A)高速液体クロマトグラフィーにより測定される、加水分解後の当該ポリフェノール組成物の固形分中に含有されるフラボノールアグリコン総量。
(B)酒石酸鉄法により測定される、当該ポリフェノール組成物の固形分中に含有されるポリフェノール総量。
の質量比[(B)/(A)]が0.01~18である、
ポリフェノール組成物を提供するものである。
カメリアシネンシス抽出物を合成吸着剤に吸着させる工程と、
上記合成吸着剤に第1の有機溶媒水溶液を接触させて、第1の画分を溶出させる工程と、
上記第1の画分を溶出した後の合成吸着剤に、上記第1の有機溶媒水溶液よりも疎水性の高い第2の有機溶媒水溶液を接触させて、ポリフェノール組成物を含む第2の画分を溶出させる工程
を含む、製造方法を提供するものである。
本明細書において「ポリフェノール」とは、酒石酸鉄法により測定されるものをいい、具体的には、フラボノール類、フラバン-3-オール類、プロアントシアニジン類及びそれらの重合体が例示される。フラボノール類には、ケルセチン、ミリセチン、ケンフェロール等やそれらの配糖体が包含され、またフラバン-3-オール類にはカテキン類が包含され、更にその重合体にはテアフラビン類、ウーロンホモビスフラバン類等が包含される。
「カメリアシネンシス(Camellia sinensis)」とは、ツバキ科ツバキ属のチャノキのことであるが、加工方法により、不発酵茶、半発酵茶、発酵茶に大別することができる。中でも、不発酵茶が好ましい。不発酵茶としては、Camellia属、例えば、C.var.sinensis(やぶきた種を含む)、C.var.assamica及びそれらの雑種から選択される茶から製茶された、茎茶、棒茶、芽茶、煎茶、番茶、碾茶、釜入り茶等の緑茶が例示される。半発酵茶としては、総称して烏龍茶と呼ばれる鉄観音、色種、黄金桂、武夷岩茶等が例示される。発酵茶としては、紅茶と呼ばれるダージリン、ウバ、キーマン等が例示される。ここで、本明細書において「不発酵茶、半発酵茶、発酵茶、緑茶、烏龍茶、紅茶」とは、飲用に供される茶抽出物ではなく、該茶抽出物を得るための茶原料をいう。
本明細書において「フラボノールアグリコン」とは、ミリセチン、ケルセチン及びケンフェロールからなる混合物の総称である。また本明細書において「フラボノール配糖体」とは、ミリセチン、ケルセチン及びケンフェロールをアグリコン骨格として有する配糖体をいい、これら配糖体に更に糖が結合したものも包含される。本明細書における「フラボノールアグリコン総量」は、これらフラボノールアグリコン及びフラボノール配糖体を含むポリフェノール組成物を加水分解し、加水分解後の溶液中に含有されるミリセチン、ケルセチン及びケンフェロールの合計量に基づいて定義される。
本発明のポリフェノール組成物は、次の(A)及び(B)を特定の比率で含有することを特徴とするものである。
ここで、(A)は、高速液体クロマトグラフィーにより測定される、加水分解後の当該ポリフェノール組成物の固形分中に含有されるフラボノールアグリコン総量(以下、「(A)フラボノールアグリコン総量」という)であるが、(A)フラボノールアグリコン総量は0.7~50質量%であることが好ましく、風味や水への溶解性の観点から、1.5~45質量%、更に5~40質量%、更に7~35質量%、特に9~25質量%であることが好ましい。
また、(B)は、酒石酸鉄法により測定される、当該ポリフェノール組成物の固形分中に含有されるポリフェノール総量(以下、「(B)ポリフェノール総量」という)であるが、(B)ポリフェノールの総量は5~95質量%であることが好ましく、風味や水への溶解性の観点から、10~90質量%、更に15~80質量%、更に20~70質量%、特に25~40質量%であることが好ましい。ここで、本明細書において「固形分」とは、ポリフェノール組成物を105℃の電気恒温乾燥機で3時間乾燥して水などの揮発物質を除いた残分をいう。
そして、上記(A)及び(B)の質量比[(B)/(A)]は0.01~18であるが、エグ味低減の観点から、0.01~16、更に0.1~11、更に0.3~9、更に0.5~7、特に1~5であることが好ましい。
なお、「(A)フラボノールアグリコン総量」及び「(B)ポリフェノール総量」は、後掲の実施例に記載の方法により定量されたものである。
(1)カメリアシネンシス抽出物を合成吸着剤に吸着させる工程、
(2)上記合成吸着剤に第1の有機溶媒水溶液を接触させて、第1の画分を溶出させる工程、
(3)上記第1の画分を溶出した後の合成吸着剤に、上記第1の有機溶媒水溶液よりも疎水性の高い第2の有機溶媒水溶液を接触させて、ポリフェノール組成物を含む第2の画分を溶出させる工程。
また、カメリアシネンシス抽出物として、上記カメリアシネンシス抽出物を使用する代わりに、カメリアシネンシス抽出物の濃縮物を水又は有機溶媒に溶解又は希釈したものを用いても、カメリアシネンシス抽出物及びその濃縮物を併用してもよい。ここで、カメリアシネンシス抽出物の濃縮物とは、カメリアシネンシス抽出物から溶媒を一部除去したものであり、例えば、特開昭59-219384号公報、特開平4-20589号公報、特開平5-260907号公報、特開平5-306279号公報等に記載の方法により調製することができる。また、カメリアシネンシス抽出物の濃縮物として市販品を使用してもよく、例えば、三井農林(株)の「ポリフェノン」、伊藤園(株)の「テアフラン」、太陽化学(株)の「サンフェノン」等の緑茶抽出物の濃縮物が挙げられる。
このような合成吸着剤は公知の方法により製造してもよいが、市販品を使用してもよい。市販の合成吸着剤としては、例えば、アンバーライトXAD4、XAD16HP、XAD1180、XAD2000(供給元:米国ローム&ハース社)、ダイヤイオンHP20、HP21(三菱化学社製)、セパビーズSP-850、SP-825、SP-700、SP-70(三菱化学社製)、VPOC1062(Bayer社製)等のスチレン系;セパビーズSP205、SP206、SP207(三菱化学社製)等の芳香環に臭素原子を導入して吸着能を高めた置換スチレン系;ダイヤイオンHP1MG、HP2MG(三菱化学社製)等のメタクリル系;アンバーライトXAD761(ロームアンドハース社製)等のフェノール系;アンバーライトXAD7HP(ロームアンドハース社製)等のアクリル系;TOYOPEARL、HW-40C(東ソー社製)等のポリビニル系;SEPHADEX、LH-20(ファルマシア社製)等のデキストラン系が例示される。
中でも、合成吸着剤としては、その母体がスチレン系、メタクリル系、アクリル系、ポリビニル系が好ましく、分離能の観点から、スチレン系が特に好ましい。
有機溶媒水溶液の通液条件は適宜設定することが可能であり、第2の有機溶媒水溶液の通液条件は第1の有機溶媒水溶液と同一でも異なっていてもよい。第1及び第2の有機溶媒水溶液の通液条件は、例えば、通液速度(SV)が好ましくは0.5~10[h-1]、特に好ましくは0.5~5[h-1]であり、かつ通液倍数(BV)が合成吸着剤の容量に対して好ましくは0.5~10[v/v]、特に好ましくは1~4[v/v]である。
試料溶液をフィルター(0.45μm)で濾過し、高速液体クロマトグラフ(型式SCL-10AVP、島津製作所製)を用い、オクタデシル基導入液体クロマトグラフ用パックドカラム(L-カラムTM ODS、4.6mmφ×250mm:財団法人 化学物質評価研究機構製)を装着し、カラム温度35℃でグラディエント法により分析した。移動相A液は酢酸を0.1mol/L含有する蒸留水溶液、B液は酢酸を0.1mol/L含有するアセトニトリル溶液とし、試料注入量は20μL、UV検出器波長は280nmの条件で行った。なお、グラディエントの条件は、以下のとおりである。
0.0 97 3
5.0 97 3
37.0 80 20
43.0 80 20
43.5 0 100
48.5 0 100
49.0 97 3
60.0 97 3
試料溶液をフィルター(0.45μm)で濾過し、高速液体クロマトグラフ(型式Waters2695、WATERS製)を用い、カラム(Shimpach VP ODS、150×4.6mmI.D.)を装着し、カラム温度40℃でグラディエント法により分析した。移動相A液はリン酸を0.05質量%含有する蒸留水溶液、B液はメタノール溶液とし、流速は1mL/分、試料注入量は10μL、UV検出器波長は368nmの条件で行った。なお、グラディエントの条件は、以下のとおりである。
0.0 95 5
20.0 80 20
40.0 30 70
41.0 0 100
46.0 0 100
47.0 95 5
60.0 95 5
(1)試料の加水分解
固形分濃度0.2質量%に調整した試料溶液5mLにメルカプトエタノール200μL、2N塩酸500μLを添加した。その後、ドライブロックバス(アズワン株式会社製)にて設定温度120℃で40分間加熱し試料中のフラボノール配糖体を加水分解してフラボノールアグリコン(ミリセチン、ケルセチン、ケンフェロール)を生成させた後に、冷却した。
加水分解後の試料溶液中に存在しているミリセチン、ケルセチン及びケンフェロールを、高速液体クロマトグラフィーにより定量した。なお、定量はグラディエント法により行ったが、その分析方法は上記「ルチンの測定」と同じである。
上記分析により定量されたミリセチン量、ケルセチン量及びケンフェロール量の総和として求めた。
(1)試薬の調製
1)酒石酸鉄試薬の調製
500mLメスフラスコに硫酸第一鉄七水塩0.50gと(+)酒石酸ナトリウム・カリウム四水和物2.50gを採取し、イオン交換水でメスアップした。
2000mLメスフラスコにリン酸水素二ナトリウム・二水和物20.00gとリン酸二水素カリウム2.90gを採取し、イオン交換水でメスアップした。この溶液のpHが7.5~7.6になるように調整した。pH7.6を超える場合、リン酸二水素カリウム・二水和物0.9g/100mL水溶液を添加し、pH7.5未満の場合、リン酸二水素カリウム1.2g/100mL水溶液を添加し調整した。
1)分光光度計(U-2010;日立製作所製)
2)石英製セル(10mm×10mm)
3)25mL、100mL、200mL、500mL、2000mLのメスフラスコ
4)1mL、5mL、10mL、20mL、30mLのホールピペット
5)1mL、3mL、5mLのマイクロピペット
1)測定波長:540nm
2)温度 :20℃±2℃
1)検量線作成
i)没食子酸エチル約0.5gを使用前に2~3時間乾燥させた。
ii)200mLメスフラスコに乾燥した没食子酸エチル0.2gを採取し、イオン交換水でメスアップした。(100mg/100mL標準液)
iii)100mLメスフラスコに、ii)の標準液を用い、5mg/100mL、10mg/100mL、20mg/100mL、30mg/100mLの各標準液を調製した。
iv)25mLメスフラスコに、iii)の標準液をそれぞれ5mL採取し、酒石酸鉄試薬5mLを加えリン酸バッファーでメスアップした。また、ブランクとして標準液を加えないものを調製した。
v)分光光度計にて吸光度を測定し検量線を作成した。
なお、検量線については下記を目安にし、逸脱した時は再調整した。
R2 :0.9995~1.0000
検量線傾き:34.5±0.4
切片 :0.3以下
i)イオン交換水にて分光光度計をゼロ補正した。
ii)25mLメスフラスコに試料を所定量採取し、酒石酸鉄試薬5mLを加えリン酸バッファーでメスアップした後、吸光度を測定した。なお、吸光度の測定は、発色後40分以内とした。
ポリフェノール組成物A
緑茶葉(大葉種)を熱水で抽出した後、噴霧乾燥により緑茶抽出物Aを得た。『緑茶抽出物A』は、非重合体カテキン類濃度30.8質量%、カフェイン濃度5.5質量%であった。
次いで、『緑茶抽出物A』の非重合体カテキン類濃度が1質量%になるようにイオン交換水で希釈した。次いで、『緑茶抽出物A』の希釈液800gをカラム(内径50mm×高さ180mm、容積353.3mL)に充填した合成吸着剤(SP-70、三菱化学(株)製)200mLに吸着させた。次いで、イオン交換水300mL、30質量%エタノール水溶液400mLを順次合成吸着剤に通液して非重合体カテキン類を溶出させた。次いで、合成吸着剤に50質量%エタノール水溶液を400mL通液してポリフェノール組成物を溶出させた。なお、本分画操作はすべて、通液速度SV=0.8~1.2[h-1]、通液倍数(BV)=2.0[v/v]になるように流量調整して行った。次いで、得られた溶出液を減圧濃縮によりエタノールを留去しつつ不溶物を除去した後、凍結乾燥により水分を除去して『ポリフェノール組成物A』を得た。
『ポリフェノール組成物A』は、(A)フラボノールアグリコン総量が19.2質量%、(B)ポリフェノール総量が33.1質量%、質量比[(B)/(A)]が1.72、(C)ルチン含有量が10.6質量%であった。なお、『ポリフェノール組成物A』は、後掲の本発明品1~5に使用した。
ポリフェノール組成物B
緑茶葉(大葉種)を熱水で抽出した後、噴霧乾燥により緑茶抽出物Bを得た。『緑茶抽出物B』は、非重合体カテキン類濃度30.3質量%、カフェイン濃度5.5質量%であった。
次いで『緑茶抽出物B』の非重合体カテキン類濃度が1質量%になるようにイオン交換水で希釈した。次いで、『緑茶抽出物B』の希釈液8000gをカラム(内径89.2mm×高さ600mm、容積3748mL)に充填した合成吸着剤(SP-70、三菱化学(株)製)2000mLに吸着させた。次いで、イオン交換水3000mL、25質量%エタノール水溶液9000mLを順次合成吸着剤に通液して非重合体カテキン類を溶出させた。次いで、合成吸着剤に92.5質量%エタノール水溶液を4000mL通液してポリフェノール組成物を溶出させた。なお、本分画操作はすべて、流速SV=0.5~2.1[h-1]、通液倍数(BV)=2.0[v/v]になるように流量調整して行った。次いで、得られた溶出液を減圧濃縮によりエタノールを留去した後、凍結乾燥により水分を除去して『ポリフェノール組成物B』を得た。
『ポリフェノール組成物B』は、(A)フラボノールアグリコン総量が18.3質量%、(B)ポリフェノール総量が34.0質量%、質量比[(B)/(A)]が1.86、(C)ルチン含有量が9.3質量%であった。なお、『ポリフェノール組成物B』は、後掲の本発明品6に使用した。
ポリフェノール組成物C
実施例2で得た『緑茶抽出物B』の非重合体カテキン類濃度が1質量%になるようにイオン交換水で希釈した。次いで、『緑茶抽出物B』の希釈液2400gをカラム(内径60.6mm×高さ330mm、容積951mL)に充填した合成吸着剤(SP-70、三菱化学(株)製)600mLに吸着させた。次いで、イオン交換水900mL、25質量%エタノール2700mLを順次合成吸着剤に通液して非重合体カテキン類を溶出させた。次いで、合成吸着剤に92.5質量%エタノール水溶液を1200mL通液してポリフェノール組成物を溶出させた。なお、本分画操作はすべて、流速SV=0.7~1.8[h-1]、通液倍数(BV)=2.0[v/v]になるように流量調整して行った。次いで、得られた溶出液を減圧濃縮によりエタノールを留去した後、凍結乾燥により水分を除去して『ポリフェノール組成物C』を得た。
『ポリフェノール組成物C』は、(A)フラボノールアグリコン総量が23.3質量%、(B)ポリフェノール総量が34.1質量%、質量比[(B)/(A)]が1.46、(C)ルチン含有量が7.4質量%であった。なお、『ポリフェノール組成物C』は、後掲の本発明品7に使用した。
ポリフェノール組成物D
実施例1で得られたポリフェノール組成物A 0.08質量部と、市販の緑茶抽出物(EGCg製剤、DSM Nutritional Products社製、以下『緑茶抽出物a』という)0.12質量部を混合して『ポリフェノール組成物D』を得た。なお、『緑茶抽出物a』は、(A)フラボノールアグリコンの総量が0.0質量%、(B)ポリフェノールの総量が110.5質量%※(※酒石酸鉄法の分析値)である。
『ポリフェノール組成物D』は、(A)フラボノールアグリコン総量が7.7質量%、(B)ポリフェノール総量が79.5質量%、質量比[(B)/(A)]が10.32、(C)ルチン含有量が4.2質量%であった。なお、『ポリフェノール組成物D』は、後掲の本発明品8に使用した。
ポリフェノール組成物E
市販の紅茶葉(ヌワラエリア、ブルックボンドハウス社製)5gを沸騰水500gに添加し、150rpmで5分間攪拌抽出した。次いで、2号ろ紙で吸引ろ過し採液量を測定後、氷冷(液温25℃以下)した。その後、水分を凍結乾燥で除いて紅茶抽出物を得た。得られた紅茶抽出物を、以下『紅茶抽出物a』という。
紅茶抽出物a 0.42質量部と、実施例1で得られたポリフェノール組成物A 0.025質量部とを混合して『ポリフェノール組成物E』を得た。
『ポリフェノール組成物E』は、(A)フラボノールアグリコン総量が1.9質量%、(B)ポリフェノール総量が17.7質量%、質量比[(B)/(A)]が9.32、(C)ルチン含有量が1.3質量%であった。なお、『ポリフェノール組成物E』は、後掲の本発明品9に使用した。
ポリフェノール組成物F
市販の紅茶葉(AS CTC、ブルックボンドハウス社製)茶葉5gを沸騰水500gに添加し、150rpmで5分間攪拌抽出した。次いで、2号ろ紙で吸引ろ過し採液量を測定後、氷冷(液温25℃以下)した。その後、水分を凍結乾燥で除いて紅茶抽出物を得た。得られた紅茶抽出物を、以下『紅茶抽出物b』という。
紅茶抽出物b 0.39質量部と、実施例1で得られたポリフェノール組成物A 0.025質量部とを混合して『ポリフェノール組成物F』を得た。
『ポリフェノール組成物F』は、(A)フラボノールアグリコン総量が1.4質量%、(B)ポリフェノール総量が13.3質量%、質量比[(B)/(A)]が9.5、(C)ルチン含有量が0.9質量%であった。なお、『ポリフェノール組成物F』は、後掲の本発明品10に使用した。
ポリフェノール組成物G
市販の烏龍茶葉(ウーロン茶、国太楼社製)5gを沸騰水500gに添加し、150rpmで5分間攪拌抽出し、2号ろ紙で吸引ろ過し採液量を測定後、氷冷(液温25℃以下)した。その後、水分を凍結乾燥で除いて烏龍茶抽出物を得た。得られた烏龍茶抽出物を、以下『烏龍茶抽出物a』という。
烏龍茶抽出物a 0.39質量部と、実施例1で得られたポリフェノール組成物A 0.025質量部とを混合して『ポリフェノール組成物G』を得た。
『ポリフェノール組成物G』は、(A)フラボノールアグリコン総量が1.6質量%、(B)ポリフェノール総量が14.7質量%、質量比[(B)/(A)]が9.19、(C)ルチン含有量が0.8質量%であった。なお、『ポリフェノール組成物G』は、後掲の本発明品11に使用した。
ポリフェノール組成物H
実施例1で得られたポリフェノール組成物A 0.05質量部と、緑茶抽出物a 0.138質量部を混合して『ポリフェノール組成物H』を得た。
『ポリフェノール組成物H』は、(A)フラボノールアグリコン総量が5.1質量%、(B)ポリフェノール総量が89.9質量%、質量比[(B)/(A)]が17.63、(C)ルチン含有量が2.8質量%であった。なお、『ポリフェノール組成物H』は、後掲の本発明品12に使用した。
ポリフェノール組成物I
実施例1で得られたポリフェノール組成物A 0.01質量部と、紅茶抽出物a 0.43質量部を混合して『ポリフェノール組成物I』を得た。
『ポリフェノール組成物I』は、(A)フラボノールアグリコン総量が1.3質量%、(B)ポリフェノール総量が17.2質量%、質量比[(B)/(A)]が13.23、(C)ルチン含有量が0.9質量%であった。なお、『ポリフェノール組成物I』は、後掲の本発明品13に使用した。
ポリフェノール組成物J
実施例1で得られたポリフェノール組成物A 0.01質量部と、紅茶抽出物b 0.44質量部を混合して『ポリフェノール組成物J』を得た。
『ポリフェノール組成物J』は、(A)フラボノール量アグリコン総が0.7質量%、(B)ポリフェノール総量が12.5質量%、質量比[(B)/(A)]が17.85、(C)ルチン含有量が0.5質量%であった。なお、『ポリフェノール組成物J』は、後掲の本発明品14に使用した。
ポリフェノール組成物K
実施例1で得られたポリフェノール組成物A 0.01質量部と、烏龍茶抽出物a 0.41質量部を混合して『ポリフェノール組成物K』を得た。
『ポリフェノール組成物K』は、(A)フラボノールアグリコン総量が0.9質量%、(B)ポリフェノール総量が14.0質量%、質量比[(B)/(A)]が15.56、(C)ルチン含有量が0.4質量%であった。なお、『ポリフェノール組成物K』は、後掲の本発明品15に使用した。
市販の緑茶抽出物(ポリフェノン70A、三井農林社製、以下『緑茶抽出物b』という)を用いた。
緑茶抽出物bは、(A)フラボノールアグリコン総量が1.1質量%、(B)ポリフェノール総量が99.0質量%、質量比[(B)/(A)]が90.00、(C)ルチン含有量が0.1質量%であった。なお、『緑茶抽出物b』は、後掲の比較品1に使用した。
紅茶抽出物aを用いた。
紅茶抽出物aは、(A)フラボノールアグリコン総量が0.9質量%、(B)ポリフェノール総量が16.8質量%、質量比[(B)/(A)]が18.67、(C)ルチン含有量が0.7質量%であった。なお、『紅茶抽出物a』は、後掲の比較品2に使用した。
紅茶抽出物bを用いた。
紅茶抽出物bは、(A)フラボノールアグリコン総量が0.3質量%、(B)ポリフェノール総量が12.0質量%、質量比[(B)/(A)]が40.00、(C)ルチン含有量が0.2質量%であった。なお、『紅茶抽出物b』は、後掲の比較品3に使用した。
烏龍茶抽出物aを用いた。
烏龍茶抽出物aは、(A)フラボノールアグリコン総量が0.5質量%、(B)ポリフェノール総量が13.5質量%、質量比[(B)/(A)]が27.00、(C)ルチン含有量が0.1質量%であった。なお、『烏龍茶抽出物a』は、後掲の比較品4に使用した。
0.15質量%の重曹水溶液(95℃)で600gのウーロン茶葉をカラム法で抽出し、抽出物約6000gを得た。液温を60~65℃に保ち、400gの粒状活性炭(クラレ社製、GW-H32/60)に通液し、非重合カテキン類及びカフェインを選択的に除去した。この通過液を減圧下で濃縮し、Brix10以上の茶抽出物約900gを調製し『烏龍茶抽出物b』を得た。
『烏龍茶抽出物b』は、(A)フラボノールアグリコン総量が0.84質量%、(B)ポリフェノール総量が19.4質量%、質量比[(B)/(A)]が23.1、(C)ルチン含有量が0.18質量%であった。なお、『烏龍茶抽出物b』は、後掲の比較品5に使用した。
緑茶抽出物cの製造
緑茶抽出液の濃縮物(ポリフェノンHG、三井農林(株)製)200gを、25℃にて250r/min攪拌条件下の40質量%エタノール水溶液800g中に分散させ、酸性白土(ミズカエース#600、水澤化学社製)80gを投入後、約10分間攪拌を続けた。次に、2号ろ紙で濾過した後、濾液に活性炭8gを添加し再び2号ろ紙で濾過した。次に、0.2μmメンブランフィルターによって再濾過した。次に、40℃、減圧下にて濾液からエタノールを留去し、イオン交換水で非重合体カテキン類濃度を調整して「緑茶抽出物c」を得た。
「緑茶抽出物c」は、(A)フラボノールアグリコン総量が1.5質量%、(B)ポリフェノール総量が47.7質量%、質量比[(B)/(A)]が32.49、(C)ルチン含有量が0.96質量%であった。なお、『緑茶抽出物c』は、後掲の比較品6に使用した。
表1及び2に示す各成分をサンプル瓶中にて各配合量に秤量し、その中にイオン交換水を投入して分散させた。その後、60℃のウォーターバス中で溶解してから、室温(25℃)で2時間静置し、飲料を調製した。各飲料が室温に調温したところで官能試験を下記の基準で行った。その結果を表1及び2に示す。
5:大変良好(嗜好性の高い苦味があり、エグ味が少ない)
4:良好(エグ味は感じるが気にならない)
3:やや良好(エグ味が若干気にかかる)
2:やや不良(エグ味がやや強い)
1:不良(エグ味が強い)
実施例1のポリフェノール組成物Aを用いて焼き菓子を作製した。
材料α(脱脂粉乳25質量部、無塩バター25質量部、白砂糖29質量部、マーガリン45質量部)を秤量し、ミキサー[Hobart社製 N50 MIXER(5コートミキサー)]に入れ、ビーターを用いて低速30秒で攪拌後、さらに中速にて攪拌し比重0.9の生地を調製した。
次に、材料αに低速で30秒攪拌しながら、卵を溶いたものを3分割して加えた。1回目の卵を添加後、低速で30秒撹拌を行った。2回目の添加時に食塩を溶解させた卵水と、ポリフェノール組成物Aを同時にミキサーに直接投入し、低速にて30秒撹拌を行った。上記終了後、ミキサーの壁に付着した油をかき落とした後、最後の卵を加え、低速30秒撹拌後、さらに均一なクリーム状になるまで中速にて2分間撹拌を行った。
次に、薄力粉を入れ、低速で45秒間撹拌した。攪拌により得られた原料を20g秤量し、縦72mm×横22mm×高さ14mmの長方形の焼き型に詰め、剥離紙を敷いた展板にならべ、型に詰めた生地表面に6個の穴をつまようじで開けた。展板1枚当たり、4個/4個/4個ずつ3列に並べ、計12個を並べた。次に、上記展板の下にさらに2枚の展板を重ね、表面にアルミホイルをかけた。焼成はオーブン中、160℃にて行った。アルミホイルをかぶせて20分間焼成、アルミを外した後18分間焼成を行い、焼き菓子を調製した。焼成後、網の上で室温下20分冷却後、チャック付きポリエチレン袋に入れ、20℃恒温室にて1晩放置した。食感評価の結果、食感上の問題を意識することなく食べることができた。
食後の血糖値上昇抑制効果
雄性マウスC57BL/6J(7週齢)を6日間予備飼育し、試験開始前に16時間絶食させてから4群(実施例1群、比較例6群、比較例5群、対照群(水)、各群n=5)に分け、血液を採取した。
実施例1群には実施例1で得られた製剤を20質量%エタノール水溶液に溶解し、これを0.57mg/g体重として経口投与した。また、比較例6群には比較例6で得られた製剤を20質量%エタノール水溶液に溶解し、これを0.39mg/g体重として経口投与した。更に、比較例5群には比較例5で得られた製剤を20質量%エタノール水溶液に溶解し、これを1.00mg/g体重として経口投与した。一方、対照群には20質量%エタノールを経口投与した。そして、各試料を投与直後のマウスに、表3に示す組成の脂肪乳剤を40mg/g体重となるように経口投与した。
α-アミラーゼ活性阻害効果
α-アミラーゼ活性の測定は、下記の方法により行った。
酵素 :50U/mL ブタ膵臓由来アミラーゼ(dissolved in buffer)
基質 :20mg Starch Azure(in 80 μL buffer)
緩衝液:40mMリン酸緩衝液(20mM NaClを含む)(pH7.0)
阻害剤:実施例1で得た製剤(被験試料)又は比較例5及び6で得た製剤(対照試料)(dissolved in 20%EtOH)
手順:
(1)基質20mg/80μLと阻害剤10μLを等量混和し、37℃5分間プレインキュベート
(2)酵素溶液10μLを加え、37℃15分間反応
(3)100 mM リン酸緩衝液(pH4.3)900μLを添加
(4)反応液を遠心分離し、上清を波長595 nmで測定
リパーゼ活性阻害効果
リパーゼ活性の測定は、下記の方法により行った。
酵素 :50U/mL ブタ膵臓由来リパーゼ(Sigma type II dissolved in buffer)
基質 :0.1M 4-Methylumbelliferyl oleate(dissolved in DMSO)
緩衝液:150 mM NaCl、1.36mM CaCl2を含む 13 mM Tris-HCl (pH 8.0)
阻害剤:実施例1で得た製剤又は比較例5及び6で得た製剤(dissolved in 20%EtOH)
手順 :
(1)25℃でマイクロプレートに、緩衝液60μL、基質20μLを添加し混合
(2)阻害剤10μLを添加
(3)酵素10μLを添加
(4)25℃で30分間インキュベート
(5)停止液(クエン酸緩衝液pH4.2)100μLを添加
(6)励起波長355nmで波長460nmの蛍光を測定
Claims (7)
- カメリアシネンシス由来のフラボノールアグリコン及びフラボノール配糖体を含有するポリフェノール組成物であって、
次の(A)及び(B):
(A)高速液体クロマトグラフィーにより測定される、加水分解後の当該ポリフェノール組成物の固形分中に含有されるフラボノールアグリコン総量。
(B)酒石酸鉄法により測定される、当該ポリフェノール組成物の固形分中に含有されるポリフェノール総量。
の質量比[(B)/(A)]が0.01~18である、ポリフェノール組成物。 - 前記(A)フラボノールアグリコン総量が0.7~50質量%である、請求項1記載のポリフェノール組成物。
- 前記(B)ポリフェノール総量が5~95質量%である、請求項1又は2記載のポリフェノール組成物。
- 当該ポリフェノール組成物がルチンを含有し、(C)当該ポリフェノール組成物の固形分中に含有されるルチンの含有量が0.4~30質量%である、請求項1~3のいずれか1項に記載のポリフェノール組成物。
- 前記カメリアシネンシスが緑茶である、請求項1~4のいずれか1項に記載のポリフェノール組成物。
- 請求項1~5のいずれか1項に記載のポリフェノール組成物を含有する、飲食品。
- 請求項1~5のいずれか1項に記載のポリフェノール組成物の製造方法であって、
カメリアシネンシス抽出物を合成吸着剤に吸着させる工程と、
前記合成吸着剤に第1の有機溶媒水溶液を接触させて、第1の画分を溶出させる工程と、
前記第1の画分を溶出した後の合成吸着剤に、前記第1の有機溶媒水溶液よりも疎水性の高い第2の有機溶媒水溶液を接触させて、ポリフェノール組成物を含む第2の画分を溶出させる工程を含む、製造方法。
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HISASHI YOSHIOKA: "Green Tea Extract/Chitosan Complex as a New Foodstuff", CHITIN AND CHITOSAN RESEARCH, vol. 12, no. 2, 2006, pages 214 * |
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Publication number | Publication date |
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TWI498086B (zh) | 2015-09-01 |
JP5492615B2 (ja) | 2014-05-14 |
US20150111844A1 (en) | 2015-04-23 |
TW201041520A (en) | 2010-12-01 |
CN102361562A (zh) | 2012-02-22 |
JP2010246530A (ja) | 2010-11-04 |
US9011944B2 (en) | 2015-04-21 |
CN102361562B (zh) | 2014-04-02 |
US20120015057A1 (en) | 2012-01-19 |
US9119867B2 (en) | 2015-09-01 |
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