WO2016010064A1 - 茶飲料の白濁抑制剤 - Google Patents
茶飲料の白濁抑制剤 Download PDFInfo
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- WO2016010064A1 WO2016010064A1 PCT/JP2015/070224 JP2015070224W WO2016010064A1 WO 2016010064 A1 WO2016010064 A1 WO 2016010064A1 JP 2015070224 W JP2015070224 W JP 2015070224W WO 2016010064 A1 WO2016010064 A1 WO 2016010064A1
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- Prior art keywords
- weight
- yeast
- tea
- white turbidity
- cloudiness
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- 235000013616 tea Nutrition 0.000 title claims abstract description 54
- 230000002401 inhibitory effect Effects 0.000 title abstract 3
- 229940041514 candida albicans extract Drugs 0.000 claims abstract description 31
- 239000012138 yeast extract Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 19
- 210000005253 yeast cell Anatomy 0.000 claims abstract description 19
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims abstract description 17
- 235000013325 dietary fiber Nutrition 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 10
- 229920000057 Mannan Polymers 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000003112 inhibitor Substances 0.000 claims description 24
- 241000235646 Cyberlindnera jadinii Species 0.000 claims description 6
- 244000269722 Thea sinensis Species 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 239000006228 supernatant Substances 0.000 abstract description 6
- 239000000284 extract Substances 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 3
- 239000000796 flavoring agent Substances 0.000 abstract 1
- 235000019634 flavors Nutrition 0.000 abstract 1
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 6
- 235000006468 Thea sinensis Nutrition 0.000 description 5
- 235000013361 beverage Nutrition 0.000 description 5
- 235000020279 black tea Nutrition 0.000 description 5
- 239000006285 cell suspension Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229920001503 Glucan Polymers 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 150000007523 nucleic acids Chemical class 0.000 description 3
- 102000039446 nucleic acids Human genes 0.000 description 3
- 108020004707 nucleic acids Proteins 0.000 description 3
- 235000018102 proteins Nutrition 0.000 description 3
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 2
- 101000925662 Enterobacteria phage PRD1 Endolysin Proteins 0.000 description 2
- OUYCCCASQSFEME-QMMMGPOBSA-N L-tyrosine Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-QMMMGPOBSA-N 0.000 description 2
- 241000006364 Torula Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000001014 amino acid Nutrition 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 235000011194 food seasoning agent Nutrition 0.000 description 2
- RWSXRVCMGQZWBV-WDSKDSINSA-N glutathione Chemical compound OC(=O)[C@@H](N)CCC(=O)N[C@@H](CS)C(=O)NCC(O)=O RWSXRVCMGQZWBV-WDSKDSINSA-N 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 2
- AUHDWARTFSKSAC-HEIFUQTGSA-N (2S,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-2-(6-oxo-1H-purin-9-yl)oxolane-2-carboxylic acid Chemical compound [C@]1([C@H](O)[C@H](O)[C@@H](CO)O1)(N1C=NC=2C(O)=NC=NC12)C(=O)O AUHDWARTFSKSAC-HEIFUQTGSA-N 0.000 description 1
- SQDAZGGFXASXDW-UHFFFAOYSA-N 5-bromo-2-(trifluoromethoxy)pyridine Chemical compound FC(F)(F)OC1=CC=C(Br)C=N1 SQDAZGGFXASXDW-UHFFFAOYSA-N 0.000 description 1
- 208000035404 Autolysis Diseases 0.000 description 1
- 206010057248 Cell death Diseases 0.000 description 1
- 229920001287 Chondroitin sulfate Polymers 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- 108010024636 Glutathione Proteins 0.000 description 1
- 102100024023 Histone PARylation factor 1 Human genes 0.000 description 1
- 101001047783 Homo sapiens Histone PARylation factor 1 Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- GRSZFWQUAKGDAV-UHFFFAOYSA-N Inosinic acid Natural products OC1C(O)C(COP(O)(O)=O)OC1N1C(NC=NC2=O)=C2N=C1 GRSZFWQUAKGDAV-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 102000035195 Peptidases Human genes 0.000 description 1
- 241000508269 Psidium Species 0.000 description 1
- 102000006382 Ribonucleases Human genes 0.000 description 1
- 108010083644 Ribonucleases Proteins 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 but structurally Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229940059329 chondroitin sulfate Drugs 0.000 description 1
- 235000013353 coffee beverage Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000021245 dietary protein Nutrition 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 229960003180 glutathione Drugs 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
- RQFCJASXJCIDSX-UUOKFMHZSA-N guanosine 5'-monophosphate Chemical compound C1=2NC(N)=NC(=O)C=2N=CN1[C@@H]1O[C@H](COP(O)(O)=O)[C@@H](O)[C@H]1O RQFCJASXJCIDSX-UUOKFMHZSA-N 0.000 description 1
- 235000013928 guanylic acid Nutrition 0.000 description 1
- 239000004226 guanylic acid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000013902 inosinic acid Nutrition 0.000 description 1
- 239000004245 inosinic acid Substances 0.000 description 1
- 229940028843 inosinic acid Drugs 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000008196 pharmacological composition Substances 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 235000008001 rakum palm Nutrition 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000021067 refined food Nutrition 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 230000028043 self proteolysis Effects 0.000 description 1
- 239000012064 sodium phosphate buffer Substances 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- 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
- A23F3/163—Liquid or semi-liquid tea extract preparations, e.g. gels, liquid extracts in solid capsules
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- 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
-
- 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
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/065—Microorganisms
Definitions
- the present invention relates to a white turbidity inhibitor for tea beverages obtained from yeast cell residue.
- tea beverages are transparent immediately after extraction from tea leaves, they often cause white turbidity (cream-down) later due to the effects of their components such as polyphenols.
- white turbidity cream-down
- cloudiness may occur due to long-term storage.
- white turbidity that occurs during the production process, distribution, or storage of tea beverages is often disliked in that it is mistaken for deterioration in appearance quality or contamination with microorganisms.
- the mechanism of cloudiness that occurs in tea beverages is complex and has been studied, but the complete mechanism of formation has not yet been elucidated.
- Methods for suppressing the cloudiness of tea beverages include, for example, a method of adding tyrosine (Patent Document 1), a method of adding sugar (Patent Document 2), a method of adding cyclodextrin (Patent Document 3), and adding chondroitin sulfate.
- a method (Patent Document 4), a method of treating a tea beverage with an enzyme (Patent Document 5), a method of rapidly cooling a tea extract and removing white turbidity by centrifugation or diatomaceous earth filtration (Patent Document 6) have been reported.
- any of these methods has problems such as complicated operations, a change in the taste of tea beverages, or insufficient effects.
- yeast contains components such as nucleic acids, amino acids and peptides, and the extract is used as a raw material for glutathione, which is a pharmaceutical product, and as a yeast extract, which is a natural seasoning.
- the effective utilization of yeast cell residue produced as a by-product in large quantities has been a problem.
- a method for producing a yeast extract various methods are known depending on the enzyme or medium to be extracted, and for example, Patent Document 7 can be mentioned.
- Patent Document 8 discloses a method of solubilizing yeast extract residues with a specific enzyme to treat wastewater. Are listed.
- Patent Document 9 discloses a method for producing mannose by assimilating yeast extract residues to microorganisms
- Patent Document 10 discloses a method for obtaining a pharmacological composition by washing yeast extract residues after alkali treatment
- Patent Document 11 describes yeast. A method for obtaining a microorganism culture substrate by allowing a cell wall lytic enzyme or the like to act on an extract residue is described. Under such circumstances, a further effective utilization method of yeast cell residue has been desired.
- JP 2005-333815 A JP 50-006797 A JP-A-4-2555792 JP 2004-305090 A JP-A-9-172969 JP-A-4-31348 and JP-A-2007-167052 JP-A-5-252894, JP-A-6-113789, JP-A-9-56361 JP-A-7-184640 JP-A-10-57091 JP 2001-55338 A JP 2007-006838 A
- the problem to be solved is to maintain the clarity of the tea beverage by simply suppressing the cloudiness of the tea beverage.
- What is used there is preferably a food / beverage that is highly safe and has no taste, and that can be manufactured at a low cost and with a low environmental load.
- Another problem is the effective utilization of yeast cell residue produced as a byproduct of the yeast extract.
- an extract from a yeast residue has an effect of suppressing white turbidity of a tea beverage.
- the present invention (1) A white turbidity inhibitor for tea beverages comprising yeast extract, (2) The white turbidity inhibitor of tea beverage according to (1) above, wherein the yeast extract has an RNA content per solid content of 50% by weight or more, a protein content of 10% by weight or more, and a dietary fiber of 5% by weight or more.
- the white turbidity inhibitor for tea beverages according to (2) wherein the mannan content in the dietary fiber is 60% by weight or more
- any of (1) to (5) The present invention relates to a method for suppressing the white turbidity of tea beverages, which comprises adding 0.01 to 1% by weight of the white turbidity suppressing agent for tea beverages.
- the yeast extract which has the effect excellent in the white turbidity suppression of a tea drink is obtained from the Torula yeast (Candida utilis) which has food experience and confirmed safety
- this yeast extract does not have a taste, it does not impart a taste to the added tea beverage.
- yeast since yeast is used as a raw material, there are less risks of supply insecurity, price fluctuations, and quality fluctuations than when animals and plants are used as raw materials. Furthermore, the microbial cell residue after extracting yeast extract etc.
- the yeast extract which suppresses aggregation and precipitation which arise with food and drink with a simple process can be acquired from there.
- the cell residue of Torula yeast is by-produced in large quantities with the production of yeast extract and other useful ingredients as seasonings, and the present invention can effectively use the yeast cell residue. This is also extremely advantageous in terms of reduction.
- the yeast referred to in the present invention is a yeast that can be used for food production without performing genetic recombination.
- Specific examples thereof include Candida utilis and Saccharomyces cerevisiae. Among them, Candida utilis is desirable.
- the yeast cell residue of the present invention is an extraction treatment using one or more of hot water, acid / alkaline solution, autolysis, mechanical disruption, cell wall lytic enzyme, proteolytic enzyme, ribonuclease, or deaminase. This is the residue after the yeast extract or useful component is removed.
- An example is “KR yeast” manufactured by Kojin Life Sciences. Such residues are generally composed of glucan, mannan, protein, lipid, and nucleic acid, but structurally, glucan, mannan, protein and other components are complexed and firmly It is inferred that they are combined.
- As the yeast cell residue used for producing the white turbidity inhibitor of the tea beverage of the present invention it is particularly preferable to use a residue after acid extraction from yeast, because it is highly active.
- the aforementioned yeast cell residue is washed with water. Specifically, water is added to the yeast cell residue to prepare a cell suspension having a concentration of about 10% by weight based on the dry cell weight, and the pH of the cell suspension is desirably adjusted to a weakly acidic range (pH 4). 0.0 to 5.0), and the supernatant is removed by centrifugation to obtain a yeast cell residue after washing. This washing step is performed once or twice or more. Next, water is added to the washed yeast cell residue to prepare a cell suspension having a concentration of about 10% by weight in terms of dry cell weight, and the pH is adjusted to neutral.
- the yeast extract has an RNA content per solid content of 50% by weight or more, preferably 60% by weight or more, a dietary fiber content of 5% by weight or more, preferably 10% by weight or more, and a protein content of 10% by weight or more.
- 12% by weight or more has a high white turbidity suppressing effect on tea beverages.
- the mannan content in the dietary fiber is 60% by weight or more, desirably 70% by weight or more, the effect is higher.
- the HPLC method was used for measuring the RNA content.
- the separation column was GS-320HQ, and the mobile phase was 0.1M sodium phosphate buffer (pH 7.0). Detection was performed at UV 260 nm.
- the RNA content was determined from the area of the peak obtained by injecting the yeast extract.
- Hydrolysis was used to measure the protein content contained in the yeast extract.
- the yeast extract was hydrolyzed with 6N hydrogen chloride at 110 ° C. for 24 hours, pretreated, and measured by a fully automatic amino acid analyzer (manufactured by Hitachi). Hydrolysis was used to measure dietary fiber content. After the yeast extract was hydrolyzed with 1N sulfuric acid at 110 ° C.
- the yeast extract obtained by the above-described production method using yeast cell residue as a raw material can be used as it is as a white turbidity inhibitor for tea beverages. Alternatively, if necessary, it may be blended with other water-soluble components to form a cloudiness inhibitor. As a field of use, tea is particularly effective, but it can be used for a wide range of tea beverages.
- the tea beverage of the present invention is not particularly limited, and specifically includes black tea beverages, green tea beverages, guava tea beverages, and coffee beverages.
- the strength of the effect of the cloudiness inhibitor of the present invention varies depending on the type and pH of the beverage and the concentration of the substrate. Accordingly, the desirable blending amount varies depending on the type, pH and concentration of the beverage, but is generally 0.01 to 1% by weight (as a yeast extract dry product), preferably 0.025 to 0.5% by weight, Desirably, it is 0.1 to 0.3% by weight.
- This solid was suspended in water, the solid and the supernatant were separated again with a centrifuge, and the yeast cell residue was obtained after washing as a solid.
- This solid was suspended in water to prepare a 15% by weight (dry matter equivalent) suspension, and then adjusted to pH 7.0. This suspension was heat-treated at 80 ° C. for 10 minutes and cooled with cold water. Thereafter, the supernatant was collected with a centrifuge, concentrated with an evaporator, and freeze-dried to obtain about 30 g of a powdery yeast extract, which was used as a white turbidity inhibitor for tea beverages.
- the white turbidity suppressor had an RNA content of 70.6%, a dietary fiber content of 14.2% by weight, and a protein content of 15.3% by weight. The amount of mannan in the dietary fiber was 85.5% by weight.
- Example 1 Tea turbidity suppression test Tea bags (Brooks "Sala Premium Assam") of 3.5 g of tea leaves were immersed in 200 g of hot water (distilled water) at about 98 ° C. and extracted for 2 minutes. The tea bag was removed after extraction. Furthermore, in order to remove a fine tea leaf, it filtered with a 10 micrometer filter. After cooling the produced black tea to room temperature, the white turbidity inhibitor obtained by the manufacture example was added 0.1weight% with respect to black tea. The black tea with the cloudiness inhibitor thus obtained was placed in a transparent glass bottle and stored refrigerated, and the cloudiness was observed over time.
- Example 2 In Example 1, it carried out like Example 1 except having added 0.05 weight% of the addition amount of the cloudiness inhibitor.
- Example 3 In Example 1, it carried out like Example 1 except having added the addition amount of the cloudiness inhibitor to 0.025 weight%.
- Example 1 In Example 1, it carried out like Example 1 except not adding a cloudiness inhibitor.
- Example 2 In Example 1, it carried out like Example 1 except having added 0.1 weight% of tyrosine.
- Comparative Example 1 and Comparative Example 2 became cloudy immediately after refrigeration, whereas in Example 1, Example 2, and Example 3, white turbidity was suppressed. Furthermore, even after refrigerated storage for 2 months, cloudiness was suppressed in Example 1, Example 2, and Example 3.
- the external appearance one day after the start of cooling is shown in FIGS.
- the white turbidity inhibitor of the tea beverage produced in the present invention As described above, by previously adding the white turbidity inhibitor of the tea beverage produced in the present invention to the tea beverage in which white turbidity occurs, it is possible to prevent quality deterioration by suppressing white turbidity occurring during storage. .
- the cloudiness inhibitor of the present invention can also be used for processed foods containing tea components.
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Abstract
Description
このように茶飲料の製造工程、流通、または保管中に起こる白濁は、外観品質の低下や微生物の混入と間違えられるなどの点で嫌われる事が多い。
茶飲料で生じる白濁のメカニズムは複雑であり、研究がなされているが未だ完全な生成メカニズムは解明されていない。
酵母エキスの製造方法としては、抽出する酵素や媒体などにより種々の方法が知られており、たとえば特許文献7が挙げられる。
このような酵母菌体残渣を処理する方法、有効利用する方法については複数の公知文献があり、たとえば、特許文献8には、酵母エキス残渣を特定の酵素で可溶化して排水処理する方法が記載されている。特許文献9には酵母エキス残渣を微生物に資化させてマンノースを製造する方法、特許文献10には酵母エキス残渣をアルカリ処理後洗浄して薬理用組成物を得る方法、特許文献11には酵母エキス残渣に細胞壁溶解酵素等を作用させて微生物培養基材を得る方法が記載されている。
このような状況の中で、酵母菌体残渣のさらなる有効活用方法が望まれていた。
また、もう一方の課題は、酵母抽出物の副産物として生成する酵母菌体残渣の有効利用である。
(1)酵母抽出物からなる、茶飲料の白濁抑制剤、
(2)前記酵母抽出物の固形分当たりのRNA含量が50重量%以上、蛋白質含量が10重量%以上かつ食物繊維が5重量%以上である上記(1)に記載の茶飲料の白濁抑制剤
(3)前記食物繊維中に占めるマンナン含量が60重量%以上である上記(2)記載の茶飲料の白濁抑制剤、
(4)前記酵母抽出物が酵母菌体残渣を利用して得られる上記(1)~(3)のいずれかに記載の茶飲料の白濁抑制剤、
(5)前記酵母がキャンディダ・ユティリスである上記(1)~(4)のいずれかに記載の茶飲料
の白濁抑制剤
(6)茶飲料に(1)~(5)のいずれかに記載の茶飲料の白濁抑制剤を0.01~1重量%含有させることを特徴とする、茶飲料の白濁を抑制する方法
にかかるものである。
この酵母抽出物は、各種の茶飲料に少量添加しておくことで、それらで生じる白濁を抑制し品質を向上させることができるため、茶飲料の白濁抑制剤として用いることができる。この酵母抽出物には呈味性がないため、添加した茶飲料に異味を付与することがない。
また、酵母を原料とするため、動植物を原料とする場合と比較して、供給不安、価格変動、品質変動のリスクが少ない。
さらに、原料として酵母エキス等を抽出した後の菌体残渣を用いることができ、そこから簡単な工程で食品及び飲料で生じる凝集・沈殿を抑制する酵母抽出物を取得できる。トルラ酵母の菌体残渣は、調味料である酵母エキスや他の有用成分の生産に伴って大量に副生しており、本発明はその酵母菌体残渣を有効利用できるため、コスト、廃棄物削減の点でも、きわめて有利である。
本発明でいう酵母とは、遺伝子組み換えを行わず、食品製造用に用いうる酵母であり、具体的にはキャンディダ・ユティリス、サッカロミセス・セレビシエ等が挙げられ、中でもキャンディダ・ユティリスが望ましい。
このような残渣は一般的に、グルカン、マンナン、蛋白質、脂質、核酸を主要な成分とするものであるが、構造的にはグルカン、マンナン、蛋白質と他の成分が複合体となって強固に結合していることが推察される。
本発明の茶飲料の白濁抑制剤を製造するために用いる酵母菌体残渣としては、特に酵母から酸抽出した後の残渣を利用すると高活性であり、好ましい。
次いで、洗浄後の酵母菌体残渣に、水を加えて乾燥菌体重量で約10重量%濃度の菌体懸濁液を作製し、pHを中性に調整する。それを70~100℃、望ましくは75~85℃に加熱する。加熱処理時間は望ましくは5分~15分、さらに望ましくは8~12分である。次いで、遠心分離機にて沈殿物を除去し、上清液として、RNAと食物繊維と蛋白質を含有する画分を取得する。
この酵母抽出物の固形分あたりのRNA含量が50重量%以上、望ましくは60重量%以上で、食物繊維含量が5重量%以上、望ましくは10重量%以上で、かつ蛋白質含量が10重量%以上、望ましくは12重量%以上のものは、茶飲料に対して高い白濁抑制効果を有する。さらに、該食物繊維中に占めるマンナン含量が60重量%以上、望ましくは70重量%以上であれば、より効果が高い。一方、強い呈味成分であるイノシン酸、グアニル酸、グルタミン酸の含量は低いことが望ましい。
酵母抽出物に含まれるタンパク質含量測定には加水分解法を用いた。酵母抽出物を6N 塩化水素にて110℃、24時間加水分解したのち前処理を行い全自動アミノ酸分析計(日立社製)にて測定して求めた。
食物繊維含量測定には加水分解法を用いた。酵母抽出物を1N硫酸にて110℃、3.5時間加水分解して中和後、加水分解生成物であるマンノース、グルコースを液体クロマトグラフィーにて測定し、グルカン・マンナンへ換算して求めた。検出にはRI検出器、分離カラムはSP810(Shodex)、移動相は超純水を使用した。
従って、望ましい配合量は、飲料の種類やpH、濃度によって異なるが、概ね0.01~1重量%(酵母抽出物乾燥物 として)であり、望ましくは0.025~0.5重量%、さらに望ましくは0.1~0.3重量%である。
<製造例>
キャンディダ・ユティリスCs7529株(FERM BP-1656株)の10%菌体懸濁液を10N硫酸でpH3.5に調整し、60℃、30分間加熱処理した後、遠心分離機で酵母エキスと酵母菌体残渣とに分離した。その後、酵母菌体残渣に水を加え、15重量%(乾燥物換算)の菌体懸濁液を調製した。この15%濃度酵母残渣懸濁液2.4kgをpH4.8に調整後、遠心分離機(日立遠心分離機:CR21N)にて固形物と上清を分離し、固形物を回収した。この固形物を水で懸濁し、再び遠心分離機で固形物と上清を分離し、固形物として洗浄後酵母菌体残渣を取得した。この固形物を水で懸濁し、15重量%(乾燥物換算)の懸濁液を調製後、pH7.0に調整した。この懸濁液につき80℃、10分間加熱処理を行い、冷水で冷却した。その後、遠心分離機で上清を回収し、エバポレーターで濃縮し、凍結乾燥させて約30gの粉末状の酵母抽出物を取得し、これを茶飲料の白濁抑制剤とした。
白濁抑制剤のRNA含量は70.6%、食物繊維含量は14.2重量%、タンパク含量は15.3重量%であった。また、この食物繊維中に占めるマンナンの量は85.5重量%であった。
約98℃のお湯(蒸留水)200 gに茶葉3.5gのティーバッグ(ブルックス社「サーラプレミアムアッサム」)を浸し、2分間抽出した。抽出後にティーバッグを除去した。さらに、細かい茶葉を除去するために10μmのフィルターでろ過した。作製した紅茶を室温まで冷ました後、製造例で得られた白濁抑制剤を紅茶に対して0.1重量%添加した。このようにして得られた白濁抑制剤入り紅茶を透明のガラス瓶に入れ、冷蔵保存して、白濁の様子を経時的に観察した。
実施例1において、白濁抑制剤の添加量を0.05重量%にしたこと以外は、実施例1と同様に行った。
実施例1において、白濁抑制剤の添加量を0.025重量%にしたこと以外は、実施例1と同様に行った。
実施例1において、白濁抑制剤を添加しない以外は、実施例1と同様に行った。
実施例1において、チロシンを0.1重量%添加したこと以外は、実施例1と同様に行った。
さらに、2か月間冷蔵保存後でも実施例1、実施例2、実施例3において白濁が抑制されていた。
冷却開始1日後の外観を図1、図2に示す。
Claims (6)
- 酵母抽出物からなる、茶飲料の白濁抑制剤。
- 前記酵母抽出物の固形分当たりのRNA含量が50重量%以上、蛋白質含量が10重量%以上かつ食物繊維が5重量%以上である請求項1に記載の茶飲料の白濁抑制剤。
- 前記食物繊維中に占めるマンナン含量が60重量%以上である請求項2に記載の茶飲料の白濁抑制剤。
- 前記酵母抽出物が酵母菌体残渣を利用して得られる上記請求項1~3のいずれか一項に記載の茶飲料の白濁抑制剤。
- 前記酵母がキャンディダ・ユティリスである請求項1~4のいずれか一項に記載の茶飲料の白濁抑制剤。
- 茶飲料に請求項1~5のいずれか一項に記載の茶飲料の白濁抑制剤を0.01~1重量%含有させることを特徴とする、茶飲料の白濁を抑制する方法。
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EP15822274.5A EP3170398B1 (en) | 2014-07-16 | 2015-07-15 | Cloudiness-inhibiting agent for tea beverage |
CN201580031199.7A CN106659178B (zh) | 2014-07-16 | 2015-07-15 | 茶饮料的混浊抑制剂 |
US15/326,233 US20170196235A1 (en) | 2014-07-16 | 2015-07-15 | Cloudiness-inhibiting agent for tea beverage |
JP2016534464A JP6827321B2 (ja) | 2014-07-16 | 2015-07-15 | 茶飲料の白濁抑制剤 |
BR112016028851A BR112016028851A8 (pt) | 2014-07-16 | 2015-07-15 | agente de inibição de turvação para bebida de chá |
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WO2016151257A1 (fr) | 2015-03-24 | 2016-09-29 | Lesaffre Et Compagnie | Utilisation d'un extrait de levure pour le collage de mouts et de boissons |
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2015
- 2015-07-15 US US15/326,233 patent/US20170196235A1/en not_active Abandoned
- 2015-07-15 EP EP15822274.5A patent/EP3170398B1/en active Active
- 2015-07-15 WO PCT/JP2015/070224 patent/WO2016010064A1/ja active Application Filing
- 2015-07-15 CN CN201580031199.7A patent/CN106659178B/zh active Active
- 2015-07-15 JP JP2016534464A patent/JP6827321B2/ja active Active
- 2015-07-15 BR BR112016028851A patent/BR112016028851A8/pt not_active Application Discontinuation
- 2015-07-16 TW TW104123011A patent/TWI671015B/zh active
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WO2016151257A1 (fr) | 2015-03-24 | 2016-09-29 | Lesaffre Et Compagnie | Utilisation d'un extrait de levure pour le collage de mouts et de boissons |
US11098273B2 (en) | 2015-03-24 | 2021-08-24 | Lesaffre Et Compagnie | Yeast extract for clarifying musts and beverages |
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TWI671015B (zh) | 2019-09-11 |
TW201616984A (zh) | 2016-05-16 |
BR112016028851A2 (pt) | 2017-08-22 |
EP3170398A4 (en) | 2018-02-28 |
CN106659178B (zh) | 2020-09-01 |
JP6827321B2 (ja) | 2021-02-10 |
CN106659178A (zh) | 2017-05-10 |
EP3170398A1 (en) | 2017-05-24 |
JPWO2016010064A1 (ja) | 2017-04-27 |
BR112016028851A8 (pt) | 2021-03-16 |
EP3170398B1 (en) | 2020-04-22 |
US20170196235A1 (en) | 2017-07-13 |
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