WO2020217849A1 - 粉末組成物 - Google Patents
粉末組成物 Download PDFInfo
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- WO2020217849A1 WO2020217849A1 PCT/JP2020/013901 JP2020013901W WO2020217849A1 WO 2020217849 A1 WO2020217849 A1 WO 2020217849A1 JP 2020013901 W JP2020013901 W JP 2020013901W WO 2020217849 A1 WO2020217849 A1 WO 2020217849A1
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- molecular weight
- dextrin
- powder composition
- tea
- ratio
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- 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
- A23F3/30—Further treatment of dried tea extract; Preparations produced thereby, e.g. instant tea
Definitions
- the present invention relates to a powder composition, and more specifically to a powder composition containing a tea leaf extract and dextrin.
- Spray drying is a method of instantaneously evaporating water by ejecting fine droplets into hot air.
- the given amount of heat is consumed as latent heat of vaporization. Therefore, the heat load on the content liquid is suppressed, and it is a method that can obtain a powder with less deterioration in quality.
- freeze concentration aqueous phase-solid
- membrane concentration aqueous phase-liquid
- evaporative concentration aqueous phase-gas
- dextrin which is a kind of excipient and has a molecular structure in which sugars are linked in a chain
- adding acyclic dextrin or cyclic dextrin having an average degree of polymerization of 4 to 10 before concentrating the extracts of tea leaves, roasted grains, and roasted beans, and then concentrating the membrane at 40 ° C. does not reduce the concentration efficiency. It has been reported that the extract can be concentrated in (Patent Document 1).
- instant tea having excellent flavor and quick-dissolving property is produced by spray-drying a tea containing dextrin having an average degree of polymerization of 4 to 10 or a combination thereof and cyclic dextrin in a state where carbon dioxide gas is dissolved. It has been reported that it can be done (Patent Document 2). Further, it has been reported that instant tea having excellent flavor and solubility can be provided by adding indigestible dextrin to a tea extract and spray-drying it (Patent Document 3).
- an object of the present invention is to provide a powder composition having excellent retention of aroma components derived from tea leaves.
- the present inventors focused on dextrin used in the production of powder compositions, adjusted the type and amount thereof, and set the molecular weight distribution in the powder composition to a predetermined condition. By doing so, it was found that a powder composition that effectively retains the aroma component derived from tea leaves can be obtained. Based on such findings, the present inventors have completed the present invention.
- the present invention is not limited to this, but relates to the following.
- a powder composition containing a tea leaf extract and dextrin The above composition, wherein the ratio of the molecular weight of 250,000 or more in the molecular weight distribution of the composition is 0.5 to 10%.
- the ratio c / a of the ratio (a) of the molecular weight of 250,000 or more and less than 300,000 in the molecular weight distribution to the ratio (c) of the molecular weight of 350,000 or more and less than 400,000 in the molecular weight distribution is 0.1 or more.
- the dextrin further comprises a spiral dextrin.
- Use of dextrin for improving the retention of tea leaf-derived aromatic components in a powder composition containing a tea leaf extract is 10% or more.
- the present invention it is possible to provide a powder composition having an excellent holding power of aroma components derived from tea leaves.
- the powder composition of the present invention can retain a large amount of tea leaf-derived aromatic components contained in the solution before drying in the manufacturing process in the composition after drying. Therefore, by utilizing the present invention, it is possible to provide a powder composition having a strong scent derived from tea leaves.
- the powder composition of the present invention can be made into a tea beverage using water or hot water, and can bring about a scent derived from tea leaves when drinking. Since the powder composition of the present invention is extremely lightweight as compared with a beverage, it is excellent in convenience during transportation.
- the powder composition of the present invention can also be used as a raw material for foods.
- the number and types of tea-flavored foods have been increasing in recent years.
- the powder composition of the present invention can be used to impart a tea leaf-derived scent to confectioneries such as cakes, castella, candies, cookies, jellies, puddings, and chocolates.
- FIG. 1 is a graph showing the retention rate of aroma components derived from tea leaves before and after spray drying.
- the horizontal axis of the graph shows various samples, and the vertical axis of the graph shows the retention rate of aromatic components.
- FIG. 2 is a graph showing the molecular weight distribution of various samples and linear dextrin B.
- the horizontal axis of the graph shows the molecular weight, and the vertical axis of the graph shows the ratio (%) to the whole.
- FIG. 2 is a graph showing the molecular weight distribution of various samples and linear dextrin B.
- the horizontal axis of the graph shows the molecular weight, and the vertical axis of the graph shows the ratio (%) to the whole.
- FIG. 2 is a graph showing the molecular weight distribution of various samples and linear dextrin B.
- the horizontal axis of the graph shows the molecular weight, and the vertical axis of the graph shows the ratio (%) to the whole.
- ppm ppb
- % by weight used in the present specification mean ppm, ppb, and% by weight of weight / weight (w / w), respectively.
- One aspect of the present invention is a powder composition containing a tea leaf extract and dextrin, wherein the proportion of the molecular weight of 250,000 or more in the molecular weight distribution of the composition is 0.5 to 10%. is there.
- the holding power of the aromatic component derived from tea leaves can be enhanced.
- the powder composition of the present invention contains a tea leaf extract.
- tea leaf extract as used herein means a component extracted from tea leaves.
- tea leaves leaves obtained from a plant belonging to the genus Camellia of the Theaceae family (Camellia sinensis (L) O. Kuntze, etc.) can be used.
- the tea leaves used in the present invention can be classified into non-fermented tea, semi-fermented tea, and fermented tea according to the processing method.
- non-fermented tea examples include green tea such as crude tea, sencha, gyokuro, kabusecha, tencha, sayha, roasted green tea, potted tea, kukicha, bar tea, and mecha.
- semi-fermented tea examples include oolong tea such as Tieguanyin, color species, golden katsura, and Wuyi tea.
- fermented tea examples include black teas such as Darjeeling, Assam, and Sri Lanka. In the present invention, only one type of tea leaf may be used alone, or a plurality of types of tea leaves may be blended and used.
- the tea leaf is not particularly limited as long as it is a site where the aromatic component can be extracted, and leaves, stems and the like can be appropriately used, and the form thereof is not limited to large leaves and powder.
- green tea leaves are preferably used, although not particularly limited.
- the powder composition of the present invention contains dextrin.
- Dextrin is a general term for carbohydrates obtained by hydrolysis of starch or glycogen.
- dextrin can be used as an excipient for forming a powder composition, and depending on the weight average molecular weight of the dextrin used and its content in the composition, in the powder composition of the present invention. The molecular weight distribution can be adjusted.
- the content of dextrin in the powder composition of the present invention is not particularly limited, but is, for example, 10 to 70% by weight, preferably 20 to 65% by weight, and more preferably 30 to 60% by weight.
- As the dextrin in the present invention a commercially available product can be used.
- the content of dextrin in the powder composition can be measured by performing sugar analysis using a method known to those skilled in the art.
- the proportion of components having a molecular weight of 250,000 or more is 0.5 to 10%. It is considered that the presence of such a molecule having a large molecular weight in a predetermined ratio enhances the holding power of the aroma component derived from tea leaves in the powder composition. On the other hand, if there are too many molecules with a large molecular weight, for example, if the proportion of components having a molecular weight of 250,000 or more exceeds 10%, the viscosity of the composition before pulverization becomes too high and the drying treatment may be performed. It becomes difficult and tends to be difficult to obtain powder.
- the proportion of the components having a molecular weight of 250,000 or more is preferably 1 to 7%, more preferably 1 to 5%.
- the distribution of the molecular weight in the powder composition can be investigated by using a gel permeation chromatography (GPC) analysis method.
- GPC gel permeation chromatography
- the distribution of the molecular weight in the powder composition can be investigated under the following conditions.
- the ratio of components of various molecular weights in the molecular weight distribution can also be obtained as shown in Examples described later. Specifically, the ratio of the target peak area to the total value (total peak area) of the obtained peak areas. Can be obtained by calculating.
- the further composition ratio of the component having a molecular weight of 250,000 or more in the powder composition of the present invention is not particularly limited, but in the range of the molecular weight of 250,000 or more and less than 500,000, the ratio decreases as the molecular weight increases. Is preferable. That is, the proportion of the component having a molecular weight of 300,000 or more and less than 350,000 is smaller than the proportion of the component having a molecular weight of 250,000 or more and less than 300,000, and the proportion of the component having a molecular weight of 300,000 or more and less than 350,000 is smaller.
- the proportion of components with a molecular weight of 350,000 or more and less than 400,000 is smaller, and the proportion of components with a molecular weight of 400,000 or more and less than 450,000 is smaller than the proportion of components with a molecular weight of 350,000 or more and less than 400,000. It is preferable that the proportion of the component having a molecular weight of 450,000 or more and less than 500,000 is smaller than the proportion of the component having a molecular weight of 400,000 or more and less than 450,000.
- the proportion of components having a molecular weight of 250,000 or more and less than 300,000 is, for example, 0.3 to 2%, preferably 0.3 to 1.5%, and more preferably 0.3 to 1.2%.
- the ratio of the components having a molecular weight of 300,000 or more and less than 350,000 is, for example, 0.1 to 1.2%, preferably 0.2 to 1%, and more preferably 0.2 to 0.8%.
- the ratio of the components having a molecular weight of 350,000 or more and less than 400,000 is, for example, 0.1 to 0.8%, preferably 0.1 to 0.7%, and more preferably 0.1 to 0.5%.
- the ratio of the components having a molecular weight of 400,000 or more and less than 450,000 is, for example, 0.05 to 0.5%, preferably 0.05 to 0.4%, and more preferably 0.1 to 0.4%.
- the ratio of the components having a molecular weight of 450,000 or more and less than 500,000 is, for example, 0.04 to 0.4%, preferably 0.05 to 0.3%, and more preferably 0.07 to 0.3%.
- the proportion of the components having a molecular weight of 300,000 or more is not particularly limited, but is, for example, 0.2 to 5%, preferably 0.3 to 3%, and more preferably 0.5. ⁇ 2%. Further, in the molecular weight distribution of the powder composition of the present invention, the proportion of the components having a molecular weight of 350,000 or more is not particularly limited, but is, for example, 0.2 to 2.5%, preferably 0.3 to 2%, more preferably. Is 0.4 to 1.5%.
- the proportion of the components having a molecular weight of 400,000 or more is not particularly limited, but is, for example, 0.2 to 1.5%, preferably 0.3 to 1.2%. More preferably, it is 0.3 to 1%.
- the proportion of components having a molecular weight of less than 250,000 is not particularly limited.
- the proportion of components having a molecular weight of less than 3,000 is, for example, 35% or more, preferably 40% or more, and more preferably 45% or more.
- the proportion of the components having a molecular weight of 3,000 or more and less than 50,000 is, for example, 15 to 30%, preferably 17 to 27%, and more preferably 20 to 25%.
- the proportion of components having a molecular weight of 50,000 or more and less than 150,000 is, for example, 2 to 25%, preferably 5 to 22%, and more preferably 6.5 to 20%. ..
- the proportion of the components having a molecular weight of 150,000 or more and less than 250,000 is, for example, 1 to 10%, preferably 2 to 8%, and more preferably 3 to 5%.
- / A is not particularly limited, but is, for example, 0.3 or more.
- the ratio b / a is preferably 0.3 to 0.9, more preferably 0.35 to 0.85, and even more preferably 0.4 to 0.8.
- / A is not particularly limited, but is, for example, 0.1 or more.
- the ratio c / a is preferably 0.1 to 0.9, more preferably 0.15 to 0.7, and even more preferably 0.2 to 0.5.
- the molecular weight distribution in the powder composition can be adjusted depending on the type of dextrin used and the like.
- the dextrin used in the present invention preferably contains a linear dextrin and a cyclic dextrin.
- linear dextrin as used herein means a dextrin in which glucose is linearly or chain-bonded while having a branched chain to form a ring structure and a spiral structure. ..
- cyclic dextrin means a dextrin in which glucose binds to form a ring structure and does not form a helical structure.
- the chain dextrin is not particularly limited, and for example, a linear dextrin having a DE (dextrose equivalent) of 1 to 25, a linear dextrin having a weight average molecular weight of 500 to 160,000, or the like can be used. Further, in the present invention, not only one type of linear dextrin but also two or more types can be used in combination. A preferred embodiment in the present invention is the use of two types of linear dextrins. When two types of linear dextrins are used, for example, a combination of a linear dextrin of DE2 to 5 and a linear dextrin of DE16 to 20 or a straight chain having a weight average molecular weight of 90,000 to 140,000. A combination of a dextrin and a linear dextrin having a weight average molecular weight of 600 to 1,200 can be used.
- DE dextrin having a DE (dextrose equivalent) of 1 to 25
- the content of the linear dextrin in the powder composition of the present invention is, for example, 30 to 65% by weight, preferably 35 to 60% by weight, and more preferably 40 to 55% by weight.
- the content of the DE2 to 5 linear dextrin in the powder composition of the present invention is determined. For example, it is 5 to 45% by weight, preferably 15 to 40% by weight, more preferably 25 to 35% by weight, and the content of linear dextrin of DE16 to 20 is, for example, 5 to 40% by weight, preferably 7 to 7 to 70% by weight.
- the content ratio (weight ratio) of the linear dextrin of DE2 to 5 and the linear dextrin of DE16 to 20 is, for example, 4: 1 to 1: 5, preferably 3: 1 to 1: 5, more preferably. Is 2: 1 to 1: 4.
- the powder composition of the present invention is used.
- the content of the linear dextrin having a weight average molecular weight of 90,000 to 140,000 is, for example, 5 to 45% by weight, preferably 15 to 40% by weight, more preferably 25 to 35% by weight, and has a weight average molecular weight.
- the content of the linear dextrin of 600 to 1,200 is, for example, 5 to 40% by weight, preferably 7 to 30% by weight, and more preferably 10 to 20% by weight.
- the content ratio (weight ratio) of the linear dextrin having a weight average molecular weight of 90,000 to 140,000 and the linear dextrin having a weight average molecular weight of 600 to 1,200 is, for example, 5: 1 to 1: 3. It is preferably 3: 1 to 1: 2, and more preferably 2: 1 to 1: 1.
- cyclodextrin for example, cyclodextrin can be used.
- any of ⁇ -cyclodextrin, ⁇ -cyclodextrin, and ⁇ -cyclodextrin can be used, but ⁇ -cyclodextrin is preferably used.
- the weight average molecular weight of the cyclic dextrin used in the present invention is not particularly limited, but is, for example, 700 to 1,300, preferably 800 to 1,200, and more preferably 900 to 1,100.
- the content of cyclic dextrin in the powder composition of the present invention is, for example, 0.5 to 15% by weight, preferably 1 to 12% by weight, and more preferably 3 to 10% by weight.
- the content ratio (weight ratio) of the linear dextrin to the cyclic dextrin is, for example, 20: 1 to 2: 1, preferably 15: 1 to 3: 1. It is preferably 12: 1 to 5: 1.
- the dextrin used in the present invention further contains a spiral dextrin.
- spiral dextrin as used herein means a dextrin to which glucose is bound to form a helical structure.
- the DE of the spiral dextrin used in the present invention is not particularly limited, but is, for example, less than 7, preferably less than 6, and more preferably less than 5.
- the spiral dextrin for example, cluster dextrin (Ezaki Glico) can be used.
- the content of the spiral dextrin in the powder composition of the present invention is, for example, 1 to 30% by weight, preferably 5 to 25% by weight, and more preferably 10 to 20% by weight.
- the content ratio (weight ratio) of the linear dextrin to the spiral dextrin is, for example, 1: 3 to 3: 1, preferably 1: 2 to 2: 1, more preferably. It is 1: 1.5 to 1.5: 1.
- the powder composition of the present invention contains a tea leaf extract
- the powder composition of the present invention may contain an aromatic component derived from tea leaves.
- the aromatic component is not particularly limited, and is, for example, pentanal (barrel aldehyde), 2-methylpropanal (isobutylaldehyde), nonanal, trimethylpyrazine, 1-octen-3-ol, 2-ethyl-3,5-.
- the powder composition of the present invention contains additives used in ordinary foods and drinks, such as antioxidants, preservatives, pH adjusters, sweeteners, nutritional enhancers, and thickeners. Stabilizers, emulsifiers, dietary fibers, quality stabilizers and the like can be added as long as the effects of the present invention are not impaired.
- the powder composition of the present invention has a powdery form and is usually a solid.
- the particle size of the powder composition of the present invention is not particularly limited, but is, for example, 0.1 to 500 ⁇ m, preferably 1 to 300 ⁇ m, and more preferably 10 to 200 ⁇ m.
- the powder composition of the present invention can be eaten and eaten as it is, but it is preferable to dissolve it in water or hot water and drink it as a tea beverage. Therefore, the powder composition of the present invention can be provided as instant tea.
- instant tea as used herein means a powdered beverage processed into a powder by drying a solution using an extract of tea leaves as a raw material. Tea beverages include non-fermented tea (green tea, etc.), semi-fermented tea (oolong tea, etc.), and fermented tea (black tea, etc.).
- Unfermented tea green tea
- Unfermented tea such as Ureshino tea, Aoyagi tea, Kama-sencha such as various Chinese teas
- Semi-fermented tea such as packaged tea, Tetsukannon tea, oolong tea
- Black tea Awabancha, Puar
- teas such as fermented tea such as black tea can be mentioned.
- the tea beverage in which the powder composition of the present invention is utilized is preferably green tea. That is, the powder composition of the present invention can be provided as instant green tea.
- the powder composition of the present invention can also be added to foods.
- foods include, for example, cakes, castellas, candies, cookies, jellies, puddings, chocolates, etc. as confectioneries, ice cream, ice candy, sorbets, etc. It can also be used for bread and dairy products.
- the amount of the powder composition added can be appropriately set according to the type of food and the like.
- the powder composition of the present invention can be produced through a step of preparing a solution containing the tea leaf extract and dextrin described above, and a step of drying the obtained solution.
- the solution may contain various components described above in addition to the tea leaf extract and dextrin.
- the blending amount of any of the components can be appropriately set as long as the effects of the present invention are not impaired, and the order in which the various components are blended is not particularly limited. Further, water may be used as the solvent of the solution, or the tea leaf extract may be used as it is.
- the amount of dextrin to be blended in the solution before powdering can be adjusted so that the content of dextrin in the soluble solid content of the solution is the content in the powder composition described above.
- the solution can be dried by a method conventionally known to those skilled in the art.
- methods such as spray drying, freeze drying, hot air drying, and vacuum drying can be mentioned, but in the present invention, spray drying is preferably used.
- the conditions such as temperature and time in spray drying are not particularly limited, and can be appropriately adjusted when the solution is pulverized.
- a step of concentrating a solution containing a tea leaf extract and dextrin, a step of sterilizing the solution, and the like can be included. Both steps can be carried out using methods conventionally known to those skilled in the art.
- Another aspect of the present invention is the use of dextrin to improve the retention of tea leaf-derived aromatic components in a powder composition containing a tea leaf extract, the proportion of the dextrin having a molecular weight of 250,000 or more in the molecular weight distribution. Is 10% or more, the above-mentioned use.
- the elements such as tea leaf extract and dextrin used in such use are as described above, and the molecular weight distribution in the powder composition is also as described above.
- the use of dextrin in the present invention is preferably used for improving the holding power of the aroma component derived from tea leaves in the powdering of the powder composition.
- various raw materials are mixed at the ratios shown in the table below to prepare a powder mixture of 6,000 g in total, and 14,000 g of water is added thereto to prepare a powder of 20,000 g (Brix 30%) in total.
- a stock solution of the composition was prepared.
- the above-mentioned solid raw material for tea leaf extract is obtained by drying and powdering the tea leaf extract and does not contain dextrin.
- a part of the powder composition stock solution prepared as described above was taken out as a sample for measuring the concentration of aromatic components, and then various stock solutions were spray-dried using a spray dryer to prepare a powder composition. ..
- the drying conditions were such that the inlet hot air temperature was 160 ° C. and the outlet hot air temperature was 110 ° C.
- the total amount of the peak area detected per solid content was calculated. Then, by obtaining (total peak area value per solid content detected in the powder composition) / (total peak area value per solid content detected in the undiluted solution) for each sample, the tea aroma before and after spray drying The retention rate of the components was calculated.
- the results of examining the retention rate of the tea aroma component are as shown in Fig. 1, and the direct molecular weight is larger than that of the sample to which the spiral dextrin (cluster dextrin) added, which is known to have a high aroma retention effect. It was shown that the aroma retention rate was higher when the chain dextrin B was added. Even more surprisingly, it was found that the retention rate of the brown aroma component was highest in the sample in which the spiral dextrin and the linear dextrin B were mixed.
- the ratio of molecular weight of 250,000 or more, the ratio of molecular weight of 300,000 or more, and the ratio of molecular weight of less than 50,000 are shown in the table below. Further, in the above molecular weight distribution, the ratio b / a of the ratio (a) of the molecular weight of 250,000 or more and less than 300,000 and the ratio (b) of the molecular weight of 300,000 or more and less than 350,000 and the molecular weight of 250,000 or more. The ratio c / a between the ratio (a) of less than 300,000 and the ratio (c) having a molecular weight of 350,000 or more and less than 400,000 is shown in the table below.
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Abstract
Description
(1)茶葉抽出物及びデキストリンを含有する粉末組成物であって、
該組成物の分子量分布における分子量250,000以上の割合が0.5~10%である、上記組成物。
(2)分子量分布における分子量300,000以上の割合が0.2~5%である、(1)に記載の組成物。
(3)分子量分布における分子量250,000以上300,000未満の割合(a)と分子量分布における分子量300,000以上350,000未満の割合(b)との比b/aが0.3以上である、(1)又は(2)に記載の組成物。
(4)分子量分布における分子量250,000以上300,000未満の割合(a)と分子量分布における分子量350,000以上400,000未満の割合(c)との比c/aが0.1以上である、(1)~(3)のいずれか1に記載の組成物。
(5)デキストリンが直鎖状デキストリン及び環状デキストリンを含む、(1)~(4)のいずれか1に記載の組成物。
(6)デキストリンがらせん状デキストリンをさらに含む、(5)に記載の組成物。
(7)茶葉抽出物を含有する粉末組成物において茶葉由来芳香成分の保持力を向上させるためのデキストリンの使用であって、
該デキストリンの分子量分布における分子量250,000以上の割合が10%以上である、上記使用。
装置:サンプリングインジェクター:231 XL(GILSON)
ポンプ:305(GILSON)
カラムオーブン:CTO-10AS VP(島津製作所)
検出器:RID-10A(島津製作所)
カラム:以下の順で直列に接続
[ポンプ] → TSKgel Guard Column PWxl(6.0mm I.D.×4cm)(東ソー) →
TSKgel G4000PWxl(粒子径10μm、7.8mm I.D.×30cm)(東ソー) →
TSKgel G3000PWxl(粒子径7μm、7.8mm I.D.×30cm)(東ソー) → [検出器]
分析データシステム:LabSolutions(島津製作所)
流速:1mL/min
注入量:50μL
移動相:0.1mol/L硝酸ナトリウム溶液
カラム温度:50℃
分析サンプルの調製は、後述の実施例で示した通りに行うことができる。また、分子量分布における各種分子量の成分の割合も後述の実施例で示した通りに求めることができ、具体的には、得られたピーク面積の合計値(総ピーク面積)に対する対象ピーク面積の割合を算出することにより求めることができる。
茶葉抽出液の固形原料(商品名:GT204S、原材料:緑茶(中国産))、直鎖状デキストリンA(松谷化学、TK-16、重量平均分子量:910、DE:18)、直鎖状デキストリンB(三和澱粉工業、サンデック#30、重量平均分子量:120,000、DE:2~5)、らせん状デキストリン(江崎グリコ、クラスターデキストリン、重量平均分子量:400,000、DE:5未満)、及び環状デキストリン(シクロケム、α-シクロデキストリン、重量平均分子量:973)をそれぞれ用いて粉末組成物を作製した。具体的には、下表に示した割合で各種原料を配合して合計6,000gの粉体混合物を調製し、これに水を14,000g加えて、合計20,000g(Brix30%)の粉末組成物原液を調製した。なお、上記の茶葉抽出液固形原料は、茶葉の抽出液を乾燥して粉末化したものであり、デキストリンは含有していない。
上記の通り得られた粉末組成物原液及び粉末組成物を、いずれもBrix値が4%となるように水で希釈又は溶解した。得られた溶液10mLを、3gの塩化ナトリウムが入ったバイアル瓶に入れて、この瓶を封入密閉し、ガスクロマトグラフィー分析装置(アルファ・モス・ジャパン、フラッシュGCノーズ HERACLES II)に導入した。以下に示した条件で、各種溶液中の芳香成分の分析を行った。
インキュベーション:60℃、15分
シリンジ:温度:70℃、注入後洗浄:90秒
ヘッドスペース注入:250μl/秒で5000μl
カラム1:MXT-5(微極性 10m、180μm ID、0.4μm)
カラム2:MXT-WAX(高極性 10m、180μm ID、0.4μm)
キャリアガス流量:水素 1.6mL/min
水素炎イオン化検出器(FID)温度:260℃
インジェクター温度:200℃
オーブン温度:40℃(5秒)~1.5℃/秒~250℃(90秒)
注入時間:125秒
トラップ温度:吸着50℃、脱離240℃
トラップ時間:吸着130秒、プレ加熱35秒
上記の各種粉末組成物について、組成物中に含まれている可溶性分子の分子量分布を測定した。各種粉末組成物を0.1mol/L硝酸ナトリウム溶液で1%(w/v)濃度になるように希釈して分析用サンプルを調製し、ゲル浸透クロマトグラフィー(GPC:Gel Permeation Chromatography)分析法を用いて分子量分布の測定を行った。また、同様にして、直鎖状デキストリンBにおける分子量分布も合わせて測定した。なお、ゲル浸透クロマトグラフィー分析の条件は、下記の通りとした。
装置:サンプリングインジェクター:231 XL(GILSON)
ポンプ:305(GILSON)
カラムオーブン:CTO-10AS VP(島津製作所)
検出器:RID-10A(島津製作所)
カラム:以下の順で直列に接続
[ポンプ] → TSKgel Guard Column PWxl(6.0mm I.D.×4cm)(東ソー) →
TSKgel G4000PWxl(粒子径10μm、7.8mm I.D.×30cm)(東ソー) →
TSKgel G3000PWxl(粒子径7μm、7.8mm I.D.×30cm)(東ソー) → [検出器]
分析データシステム:LabSolutions(島津製作所)
流速:1mL/min
注入量:50μL
移動相:0.1mol/L硝酸ナトリウム溶液
カラム温度:50℃
Claims (7)
- 茶葉抽出物及びデキストリンを含有する粉末組成物であって、
該組成物の分子量分布における分子量250,000以上の割合が0.5~10%である、上記組成物。 - 分子量分布における分子量300,000以上の割合が0.2~5%である、請求項1に記載の組成物。
- 分子量分布における分子量250,000以上300,000未満の割合(a)と分子量分布における分子量300,000以上350,000未満の割合(b)との比b/aが0.3以上である、請求項1又は2に記載の組成物。
- 分子量分布における分子量250,000以上300,000未満の割合(a)と分子量分布における分子量350,000以上400,000未満の割合(c)との比c/aが0.1以上である、請求項1~3のいずれか1項に記載の組成物。
- デキストリンが直鎖状デキストリン及び環状デキストリンを含む、請求項1~4のいずれか1項に記載の組成物。
- デキストリンがらせん状デキストリンをさらに含む、請求項5に記載の組成物。
- 茶葉抽出物を含有する粉末組成物において茶葉由来芳香成分の保持力を向上させるためのデキストリンの使用であって、
該デキストリンの分子量分布における分子量250,000以上の割合が10%以上である、上記使用。
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AU2020260801A AU2020260801A1 (en) | 2019-04-26 | 2020-03-27 | Powder composition |
EP20794424.0A EP3959988A4 (en) | 2019-04-26 | 2020-03-27 | POWDER COMPOSITION |
CN202080031254.3A CN113747798A (zh) | 2019-04-26 | 2020-03-27 | 粉末组合物 |
JP2021515901A JPWO2020217849A1 (ja) | 2019-04-26 | 2020-03-27 | |
SG11202111412WA SG11202111412WA (en) | 2019-04-26 | 2020-03-27 | Powder composition |
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EP3959988A4 (en) | 2023-01-04 |
TW202106168A (zh) | 2021-02-16 |
AU2020260801A1 (en) | 2021-12-23 |
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