WO2020110353A1 - コーヒー抽出液の製造方法 - Google Patents
コーヒー抽出液の製造方法 Download PDFInfo
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- WO2020110353A1 WO2020110353A1 PCT/JP2019/022223 JP2019022223W WO2020110353A1 WO 2020110353 A1 WO2020110353 A1 WO 2020110353A1 JP 2019022223 W JP2019022223 W JP 2019022223W WO 2020110353 A1 WO2020110353 A1 WO 2020110353A1
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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
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/28—Drying or concentrating coffee extract
- A23F5/285—Drying or concentrating coffee extract by evaporation, e.g. drying in thin layers or foam drying
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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
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
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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
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/26—Extraction of water soluble constituents
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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
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/26—Extraction of water soluble constituents
- A23F5/262—Extraction of water soluble constituents the extraction liquid flowing through a stationary bed of solid substances, e.g. in percolation columns
Definitions
- the present invention relates to a method for producing a coffee extract, etc. Specifically, the present invention relates to a method for producing a coffee extract in which aroma peculiar to coffee is enhanced and an unpleasant taste is suppressed.
- Patent Document 1 describes a method for producing a high-concentration coffee extract by passing a hot aqueous medium through a set of extraction towers (percolator towers) and combining an evaporation concentration step during the extraction step. Has been done.
- Patent Document 2 also describes a method for producing a high-concentration coffee extract by passing hot water through a set of extraction columns.
- JP 47-20370 A JP-A-52-125670
- An object of the present invention is to produce a coffee extract liquid in which aroma peculiar to coffee is enhanced and an unpleasant taste is suppressed.
- the present inventors have shown that the first extraction step maintains a good flavor peculiar to coffee by extracting at a relatively low temperature.
- the roasted and ground coffee beans used in the first extraction step are used to extract at a relatively high temperature to increase the concentration of the coffee extract and to remove miscellaneous components by evaporative concentration.
- a high-concentration coffee extract liquid with suppressed sourness was obtained.
- the coffee extract obtained in the first extraction step with the coffee extract evaporated and concentrated after the second extraction step, the coffee has a unique aroma enhanced and a reduced taste.
- the present invention was completed by finding out that an extract can be produced.
- the invention relates to, but is not limited to: (1) a) Water at 70 to 120° C. is supplied to a column packed with roasted and ground coffee beans at a flow rate of 1.0 to 10.0 kg/h per 1 L of column volume, and 0.1% per 1 L of column volume. A first extraction step to obtain an amount of coffee extract of 05-0.50 kg, b) The roasted ground coffee bean packed column used in the first extraction step was supplied with water at 125 to 150° C. at a flow rate of 1.0 to 10.0 kg/h per 1 L of column volume, and 1 L of column volume.
- a method for producing a coffee extract which comprises: (2) The production method according to (1), wherein the column used in the first extraction step is a plurality of columns connected in series. (3) The production method according to (1) or (2), wherein the extraction temperature in the first extraction step is 90 to 110°C. (4) The production method according to any one of (1) to (3), wherein the column used in the second extraction step is a plurality of columns connected in series.
- step a the coffee extract obtained in the first extraction step is fractionated into an extract (aroma) rich in volatile aroma components and an extraction residue, and a'), and After step b), the extraction residue is mixed with the coffee extract obtained in the second extraction step b'), Including, In step c), the mixture of the extraction residue and the coffee extract obtained in the second extraction step is concentrated by evaporation, In step d), a part or all of the extract liquid (aroma) containing abundant volatile aroma components obtained in step a′) is mixed with the evaporative concentrated mixed liquid.
- the manufacturing method according to any one of (1) to (6).
- a method for enhancing aroma peculiar to coffee in a coffee extract and suppressing miscellaneous taste a) Water of 70 to 120° C. is supplied to a column filled with roasted and ground coffee beans at a flow rate of 1 to 10 kg/h per 1 L of column volume, and an amount of 0.05 to 0.50 kg per 1 L of column volume. First extraction step to obtain the coffee extract of b) The roasted ground coffee bean packed column used in the first extraction step was supplied with water at 125 to 150° C. at a flow rate of 1 to 10 kg/h per 1 L of column volume, and 0.5 per 1 L of column volume.
- the method comprising:
- FIG. 1 shows a schematic diagram of a method for producing a coffee extract of the present invention when a plurality of extraction columns are used in each of the first extraction step and the second extraction step.
- FIG. 2 shows the results of sensory evaluation tests of coffee extracts prepared by drip extraction, continuous multitube extraction (without concentration) and continuous multitube extraction (with concentration).
- FIG. 3 shows that the coffee extract obtained in the first extraction step is further fractionated into an extract (aroma) rich in volatile aroma components and an extraction residue, and the obtained extraction residue is subjected to the second extraction step.
- the coffee extract of the present invention is prepared by mixing the coffee extract obtained in 1. with an evaporative concentration step, and then mixing the extract (aroma) rich in volatile aroma components with the evaporative concentrated mixture. A method for producing a liquid will be described.
- the present invention is, in one aspect, a) a first extraction step of supplying coffee at 70 to 120° C. to a column packed with roast and ground coffee beans to obtain a coffee extract, b) A second extraction step in which water at 125 to 150° C. is supplied to the roasted and ground coffee bean packed column used in the first extraction step to obtain a coffee extract, c) coffee obtained in the second extraction step A method for producing a coffee extract, comprising the steps of evaporating and concentrating the extract, and d) mixing the coffee extract obtained in the first extraction step with the evaporatively concentrated coffee extract. is there.
- aroma peculiar to coffee means a fresh aroma of coffee.
- roast and ground coffee beans the step of raising roasted by heating the green coffee beans, i.e. those obtained by grinding coffee beans which have undergone the "roasting step” means.
- the origin and variety of coffee beans used for roasted and ground coffee beans are not particularly limited.
- the coffee beans are produced in Brazil, Colombia, Africa, Mocha, Kilimangero, Mandolin, Blue Mountain, and the like, and the coffee beans include Arabica, Robusta, and Riberica.
- the coffee beans may be used in a single production area or a single variety, or may be used in combination with different production areas and varieties.
- the variety of coffee beans used in the method for producing a coffee extract of the present invention is not particularly limited, but it is preferable to use Arabica seeds or Robusta seeds.
- the roasting method and roasting conditions for obtaining roasted coffee beans from green coffee beans are not particularly limited.
- direct flame type, hot air type, semi-hot air type, charcoal fire type, far infrared ray type, microwave type, superheated steam type, horizontal (horizontal) drum type, vertical (vertical) drum type, vertical rotating bowl type , Fluidized bed type, pressure type device, etc. can be used, depending on the type of coffee beans, the degree of roasting according to a predetermined purpose (light, cinnamon, medium, high, city, full city, French, It should be finished in Italian).
- the roasting temperature for obtaining roasted coffee beans is not particularly limited, but the preferred roasting temperature is 100 to 300° C., more preferably 150 to 300° C.
- the temperature is 250°C, particularly preferably 170 to 220°C.
- the roasting time for obtaining roasted coffee beans is not particularly limited, but is preferably 5 to 30 minutes, more preferably 10 to 25 minutes, and particularly preferably 15 to 20 minutes.
- the roasting degree of the roasted coffee beans is not particularly limited, but is preferably 10 to 30, more preferably 10 to 25, particularly preferably 10 to 25, using the L value obtained by measuring the roasting degree with a color difference meter as an index. It is preferable to roast so that the amount becomes 15 to 25.
- crushed beans are put into a cell, tapped sufficiently, and then measured with a spectroscopic colorimeter.
- a spectroscopic colorimeter SE-2000 manufactured by Nippon Denshoku Industries Co., Ltd. can be used.
- the crushing method for obtaining the roasted and ground coffee beans of the present invention is not particularly limited, and a general method such as dry grinding or wet grinding can be used.
- Coffee Extract liquid refers to a liquid extracted from coffee beans.
- the coffee extract include an extract obtained by extracting roasted coffee beans with a solvent such as water, a diluted or concentrated version of the extract, and a slurry containing coffee beans or a ground product thereof. .. Further, a coffee beverage can be obtained by appropriately diluting the "coffee extract” and optionally mixing it with other raw materials.
- First extraction step In the method for producing a coffee extract of the present invention, the first extraction step of extracting the coffee extract at a low temperature, and the roasted ground coffee beans used in the subsequent first extraction step, the coffee at a high temperature. It includes a second extraction step of extracting the extract (FIG. 1).
- the method for producing a coffee extract of the present invention includes, as a first extraction step, a step of supplying water at 70 to 120° C. to a column filled with roasted and ground coffee beans to obtain a coffee extract.
- the extraction temperature in the method for producing a coffee extract of the present invention is preferably 90 to 110°C, more preferably 95 to 105°C.
- the column volume of the extraction column used in the first extraction step of the method for producing a coffee extract of the present invention is not particularly limited, but is preferably 10 to 50 L, more preferably 15 to 30 L, and even more preferably 20 to 25 L. is there.
- the first extraction step of the method for producing a coffee extract of the present invention it is preferable to maintain the temperature of the roasted ground coffee bean packed column during the extraction step.
- the column temperature in the first extraction step is preferably 70 to 120°C, more preferably 90 to 110°C, and even more preferably 95 to 105°C.
- the rate of supplying water per 1 L of roasted and ground coffee bean packed column volume is not particularly limited, but 1.0 to 10.0 kg/L of column volume It is preferable to supply water at a flow rate of h, more preferable to supply water at a flow rate of 2.0 to 7.0 kg/h per 1 L of column volume, and 3.0 to 5.0 kg/h per 1 L of column volume. Even more preferably, the water is supplied at a flow rate of.
- supplying water at a flow rate of 1.0 to 10.0 kg/h per 1 L of column volume means that when the column volume to be used is 5 L, 5.0 to 50. This means that water is supplied at a flow rate of 0 kg/h.
- the extraction rate of the coffee extract obtained in the first extraction step of the method for producing a coffee extract of the present invention is not particularly limited, but is preferably 10.0 to 23.0%, more preferably 12.0 to 21.0. %, and even more preferably 14.0 to 20.0%.
- the coffee solid content concentration of the coffee extract obtained in the first extraction step of the method for producing a coffee extract of the present invention is not particularly limited, but the Brix value is preferably 19.0 to 36.0%, more preferably It is 22.0 to 34.0%, and even more preferably 25.0 to 32.0%.
- the Brix value is a mass/mass percent of the sucrose solution based on the conversion table of ICUMSA (International Committee for the Analysis of Sugars) based on the refractive index measured at 20°C using a sugar meter or refractometer. It is a converted value and represents the soluble solid content in the beverage. The unit may be described as "Bx", "%” or "degree”. When the Brix value of the beverage is low, the content of soluble solids in the beverage including sugar is low.
- the first extraction step of the method for producing a coffee extract of the present invention a plurality of extraction columns filled with roasted and ground coffee beans are serially arranged from the viewpoint of obtaining a coffee extract containing a rich aroma component peculiar to coffee. It is preferable to connect and extract continuously (FIG. 1).
- the number of extraction columns in the first extraction step is preferably 2 or more, more preferably 2 to 10, and particularly preferably 3 to 6.
- the first extraction column filled with roasted and ground coffee beans is supplied with water at 70 to 120° C. to obtain a coffee extract, and then the first extraction column is used.
- the coffee extract can be continuously extracted by changing the extraction column in sequence, such as supplying the obtained coffee extract to a second extraction column filled with roasted and ground coffee beans.
- the volume of the extraction column used in the method for producing a coffee extract of the present invention is not particularly limited.
- the packing density of the roasted and ground coffee beans packed in the extraction column is not particularly limited either, but the amount of the roasted and ground coffee beans after wetting is 0.20 to 0.50 kg/L (the roasting and ground after moistening per 1 L of the column volume).
- Coffee beans are preferably 0.2 to 0.5 kg), more preferably 0.25 to 0.40 kg/L, even more preferably 0.25 to 0.35 kg/L.
- the amount of the coffee extract collected from the extraction column is also not particularly limited as it varies depending on the column volume and the amount of roast and ground coffee beans packed in the column, but is preferably 0.05 to 0. 50 kg, more preferably 0.08 to 0.30 kg per 1 L column volume, and particularly preferably 0.10 to 0.20 kg per 1 L column volume.
- the present invention also includes a mode in which a plurality of extraction columns filled with roasted and ground coffee beans are connected in series and continuously extracted, but the coffee extract per 1 L of the column volume is included.
- the collection amount of is the collection amount per extraction column.
- the coffee extract obtained in the first extraction step is further enriched with volatile aroma components by a method such as steam distillation, vacuum steam distillation, distillation, or vacuum distillation. It is also possible to fractionate the contained extract (aroma) and the extraction residue (Fig. 3).
- the extraction residue can be mixed with the coffee extract obtained in the second extraction step after the second extraction step described below, and the evaporation concentration step described later can be collectively performed (FIG. 3 ). Further, a part or all of the extract liquid (aroma) containing abundant volatile aroma components obtained in the fractionation step and the evaporation concentrated mixture liquid are mixed to produce a coffee extract liquid of the present invention. You can also By adopting the above-mentioned embodiment, it is possible to produce a coffee extract which is rich in a good flavor peculiar to coffee and which has a higher coffee extract concentration.
- Second extraction step In the method for producing a coffee extract according to the present invention, after the first extraction step, the roasted ground coffee bean packed column used in the first extraction step is supplied with water at a relatively high temperature to obtain coffee. It includes a second extraction step to obtain an extract (Fig. 1).
- the extraction temperature in the second extraction step in the method for producing a coffee extract according to the present invention is 125 to 150°C, preferably 125 to 140°C, more preferably 125 to 135°C.
- the column volume of the extraction column used in the second extraction step of the method for producing a coffee extract of the present invention is not particularly limited, but is preferably 10 to 50 L, more preferably 15 to 30 L, and even more preferably 20 to 25 L. is there.
- the column temperature in the second extraction step is preferably 125 to The temperature is 150°C, more preferably 125 to 140°C, and even more preferably 125 to 135°C.
- the rate of supplying water per 1 L of roasted and ground coffee bean packed column volume is not particularly limited, but 1.0 to 10.0 kg/L per column volume is used. It is preferable to supply water at a flow rate of h, more preferably to supply water at a flow rate of 2.0 to 8.0 kg/h for a column volume of 1 L, and more preferably 4.0 to 6.0 kg/h for a volume of 1 L of a column volume. Even more preferably, the water is supplied at a flow rate of.
- the extraction rate of the coffee extract obtained in the second extraction step of the method for producing a coffee extract of the present invention is not particularly limited, but is preferably 4.0 to 14.0%, more preferably 6.0 to 12.0. %, and even more preferably 8.0 to 12.0%.
- the coffee solid content concentration of the coffee extract obtained in the second extraction step of the method for producing a coffee extract of the present invention is not particularly limited, but it is preferably 0.3 to 3.0% in terms of Brix value, more preferably It is 0.5 to 2.5%, and even more preferably 1.0 to 2.0%.
- the Brix value is the mass of the sucrose solution obtained by measuring the refractive index measured at 20° C. with a sugar meter or a refractometer based on the conversion table of ICUMSA (International Committee for the Analysis of Sugars). /Value converted into mass percent, which represents the soluble solid content in the beverage.
- the number of extraction columns used in the second extraction step is not particularly limited, but from the viewpoint of obtaining a high-concentration coffee extract liquid, a plurality of extraction columns filled with roasted and ground coffee beans are connected in series and continuously. It is preferable to extract (Fig. 1).
- the number of extraction columns in the second extraction step is preferably 2 or more, more preferably 2 to 10, particularly preferably 3 to 6.
- the first extraction column filled with roasted and ground coffee beans is supplied with water at 125 to 150° C. to obtain a coffee extract, and then the first extraction column is used.
- the coffee extract can be continuously extracted by changing the extraction column in sequence, such as supplying the obtained coffee extract to a second extraction column filled with roasted and ground coffee beans.
- the volume of the extraction column used in the method for producing a coffee extract of the present invention is not particularly limited.
- the packing density of the roasted and ground coffee beans packed in the extraction column is not particularly limited, but the amount of the roasted and ground coffee beans after wetting is preferably 0.2 to 0.5 kg/L, and 0.25 to 0 It is more preferably 0.40 kg, and even more preferably 0.28 to 0.35 kg/L.
- the amount of the coffee extract collected from the extraction column in the second extraction step is not particularly limited, but is preferably 0.5 to 5.0 kg per 1 L of the column volume, more preferably 0.8 to 3. 0 kg, particularly preferably 1.0 to 1.5 kg per 1 L of column volume.
- the method for producing a coffee extract of the present invention includes a step of evaporating and concentrating the coffee extract obtained in the second extraction step after the second extraction step (FIG. 1). Since the second extraction step uses a column packed with roasted and ground coffee beans used in the first extraction step, the extraction efficiency of the coffee extract is not so high even if extraction is performed at a high temperature. Further, when coffee is extracted at a high temperature, many miscellaneous components are contained in the extract. Therefore, in the method for producing a coffee extract according to the present invention, by evaporating and concentrating the coffee extract after the second extraction step, the concentration of the coffee extract is increased, and the miscellaneous components are volatilized so that It can suppress miscellaneous tastes.
- the concentration in the coffee extract after the evaporative concentration of the coffee extract is preferably 25 to 65%, more preferably 35 to 60%, and particularly preferably 45 to 60% in terms of Brix value. 58%.
- the heating temperature in the evaporative concentration step is preferably 100 to 120°C, more preferably 105 to 115°C, particularly preferably 108 to 112°C.
- the extraction residue fractionated from the coffee extract obtained in the first extraction step and the coffee extract obtained in the second extraction step can be mixed and evaporated and concentrated (FIG. 3). ).
- the method for producing a coffee extract according to the present invention includes a step of mixing the coffee extract obtained in the first extraction step and the coffee extract concentrated by evaporation after the second extraction step (FIG. 1).
- a low temperature 70 to 120° C.
- evaporating and distilling after the second extraction step it is possible to obtain a high-concentration coffee extract liquid in which the taste is suppressed. Therefore, by mixing the coffee extract obtained in the first extraction step and the coffee extract evaporatively concentrated after the second extraction step, the aroma peculiar to the coffee is enhanced and the coffee with a reduced taste is also added.
- An extract can be produced.
- the mixing ratio of the coffee extract obtained in the first extraction step and the coffee extract evaporated and concentrated after the second extraction step is not particularly limited, and the coffee after mixing is not limited.
- the coffee extract obtained in the first extraction step and the coffee extract evaporated and concentrated after the second extraction step can be appropriately mixed so that the desired Brix value of the extract can be obtained.
- the concentration of the coffee extract obtained by mixing the coffee extract obtained in the first extraction step and the coffee extract evaporated and concentrated after the second extraction step is preferably 20 to 40%, more preferably 25 to 37%, and particularly preferably 30 to 35%.
- a part or all of the extract (aroma) containing abundant volatile aroma components fractionated from the coffee extract obtained in the first extraction step, and the coffee obtained in the first extraction step It is also possible to produce the coffee extract of the present invention by mixing the extraction residue fractionated from the extract with the coffee extract obtained in the second extraction step and mixing with the evaporative concentration mixture obtained by evaporating and concentrating.
- the method for producing a coffee extract of the present invention may include a heat sterilization step.
- the heat sterilization method is not particularly limited, and known methods such as FP sterilization and UHT sterilization can be used.
- the heat-sterilized coffee extract can be produced by, for example, a method in which the coffee extract itself is heat-sterilized and then packaged, or a method in which the coffee extract is packaged and then heat-sterilized.
- the method for producing a coffee extract according to the present invention may include a freezing step, if necessary.
- a) coffee at 70 to 120°C is supplied to a column packed with roast and ground coffee beans.
- a first extraction step of obtaining an extract b) a second extraction step of supplying coffee at 125 to 150° C. to the roasted ground coffee bean packed column used in the first extraction step to obtain a coffee extract, c ) A step of evaporating and concentrating the coffee extract obtained in the second extraction step, and d) a step of mixing the coffee extract obtained in the first extracting step with the coffee extract obtained by the evaporative concentration
- the roasted ground coffee beans, the first extraction step, the second extraction step, the evaporative concentration step, and the mixing step are described in “1. It is as described in the section of “Method for producing coffee extract”.
- the roasted ground coffee beans after extraction in the column are discarded. , Washing the column, and packing the column after washing with fresh roast and ground coffee beans.
- the column filled with the above-mentioned new roast and ground coffee beans can be used in the next first extraction step.
- the coffee extract obtained in the first extraction step is further subjected to a method such as steam distillation, vacuum steam distillation, distillation, or vacuum distillation to obtain a volatile aroma component. It is also possible to fractionate into an extract (aroma) containing abundant amounts of and an extraction residue (Fig. 3). Further, the extraction residue can be mixed with the coffee extract obtained in the second extraction step after the second extraction step, and the evaporative concentration step can be collectively performed (FIG. 3 ). Further, a part or all of the extract (aroma) containing abundant volatile aroma components obtained in the fractionation step may be mixed with the evaporative concentration mixture. By setting it as such an aspect, the aroma peculiar to coffee in a coffee extract can be raised more, and a miscellaneous taste can be suppressed more.
- Example 1 Production of Roasted and Ground Coffee Beans Green coffee beans (Brazil, Arabica) were roasted by a coffee roaster (Probat) to an L value of 20. Then, the roasted coffee beans were crushed with a roll mill (manufactured by GEA) to obtain roasted ground coffee beans.
- roasted ground coffee beans were packed in the third column so that the beans after wetting were 7.0 kg/column, and extraction was performed in the same manner with the three connected columns so that the amount of collected liquid was 3 kg. ..
- the beans in the first column which have been extracted three times, are then sent to the step of collecting the second extraction liquid, and roasted ground coffee beans are added to the fourth column, 7.0 kg/beans after wetting.
- the column was packed, and three columns were similarly connected to perform extraction so that the amount of the collected liquid was 3 kg.
- the extraction step was repeated (1 to 18 batches), and 10 to 18 batches of the extract solution that gave a stable extraction rate and Brix value were mixed to obtain a coffee extract solution after the first extraction step.
- the measurement results of each batch are shown in Table 1.
- the liquid amount of the coffee extract after the final first extraction step was 29.82 kg, Brix was 29.21%, and the average extraction rate was 17.92%.
- Sample Comparative Example 1 was prepared by mixing 1.0 kg of the coffee extract obtained in the first extraction step of (i) and 8.3 kg of the coffee extract obtained in the second extraction step of (ii). (Continuous multi-tube (without concentration)) was prepared. The liquid amount of Sample Comparative Example 1 was 9.3 kg and Brix was 4.75%.
- Example 1, Comparative Example 1 and Comparative Example 2 produced in (2) above were diluted with hot water so that each Brix was 1.3, A sample beverage for sensory evaluation test was obtained. After that, a sensory evaluation was carried out by specialized panelists (4 persons) for each sample beverage. In the sensory evaluation, a specialized panelist drank 30 mL of each sample beverage and evaluated it from 0 to 100 points from the viewpoint of aroma and miscellaneous taste peculiar to coffee.
- the coffee extract obtained in the above-mentioned first extraction step is further subjected to a method such as steam distillation, vacuum steam distillation, distillation or vacuum distillation. It is also possible to fractionate into an extract (aroma) containing abundant volatile aroma components and an extraction residue. Further, the obtained extraction residue can be mixed with the coffee extract obtained in the above-mentioned second extraction step to be evaporated and concentrated (FIG. 3). Then, a part or all of the extract liquid (aroma) containing abundant volatile aroma components obtained in the fractionation step is mixed with the evaporative concentration mixture liquid to produce a coffee extract liquid of the present invention. You can also do it.
- a method for producing a coffee extract of the present invention as shown in FIG. 3, the coffee extract obtained in the above-mentioned first extraction step is further subjected to a method such as steam distillation, vacuum steam distillation, distillation or vacuum distillation. It is also possible to fractionate into an extract (aroma) containing abundant volatile aroma components and an extraction residue. Further,
- the present invention relates to a new means for providing a coffee extract having an enhanced coffee-specific scent and a suppressed coffee flavor, and therefore has high industrial applicability.
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Abstract
Description
(1)a)焙煎粉砕コーヒー豆が充填されたカラムに、70~120℃の水を、カラム容積1Lあたり1.0~10.0kg/hの流速で供給し、カラム容積1Lあたり0.05~0.50kgの量のコーヒー抽出液を得る第一抽出工程、
b)前記第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、125~150℃の水を、カラム容積1Lあたり1.0~10.0kg/hの流速で供給し、カラム容積1Lあたり0.5~5.0kgの量のコーヒー抽出液を得る第二抽出工程、
c)前記第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程、および、
d)前記第一抽出工程で得られたコーヒー抽出液と、前記蒸発濃縮されたコーヒー抽出液とを混合する工程、
を含む、コーヒー抽出液の製造方法。
(2)前記第一抽出工程で使用するカラムが、直列的に連結された複数のカラムである、(1)に記載の製造方法。
(3)前記第一抽出工程における抽出温度が90~110℃である、(1)または(2)に記載の製造方法。
(4)前記第二抽出工程で使用するカラムが、直列的に連結された複数のカラムである、(1)~(3)のいずれかに記載の製造方法。
(5)前記第二抽出工程における抽出温度が125~140℃である、(1)~(4)のいずれかに記載の製造方法。
(6)さらに、前記第二抽出工程においてコーヒー抽出液を得た後に、カラム内の抽出後の焙煎粉砕コーヒー豆を廃棄すること、カラムを洗浄すること、および洗浄後のカラムに新しい焙煎粉砕コーヒー豆を充填することを含み、ここで、新しい焙煎粉砕コーヒー豆が充填された前記カラムが次の第一抽出工程に使用されるものである、(1)~(5)のいずれかに記載の製造方法。
(7)さらに、
工程a)の後に、第一抽出工程で得られたコーヒー抽出液を、揮発性香気成分を豊富に含有する抽出液(アロマ)と抽出残渣に分画する工程a’)、および、
工程b)の後に、前記抽出残渣を、第二抽出工程で得られたコーヒー抽出液と混合する工程b’)、
を含み、
工程c)において、前記抽出残渣と第二抽出工程で得られたコーヒー抽出液との前記混合液を蒸発濃縮し、
工程d)において、前記工程a’)で得られた揮発性香気成分を豊富に含有する抽出液(アロマ)の一部または全部と、前記蒸発濃縮混合液とを混合する、
(1)~(6)のいずれかに記載の製造方法。
(8)コーヒー抽出液におけるコーヒー特有の香りを高め、かつ雑味を抑える方法であって、
a)焙煎粉砕コーヒー豆が充填されたカラムに、70~120℃の水を、カラム容積1Lあたり1~10kg/hの流速で供給し、カラム容積1Lあたり0.05~0.50kgの量のコーヒー抽出液を得る第一抽出工程、
b)前記第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、125~150℃の水を、カラム容積1Lあたり1~10kg/hの流速で供給し、カラム容積1Lあたり0.5~5.0kgの量のコーヒー抽出液を得る第二抽出工程、
c)前記第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程、および、
d)前記第一抽出工程で得られたコーヒー抽出液と、前記蒸発濃縮されたコーヒー抽出液とを混合する工程、
を含む、前記方法。
本発明は、一態様では、a)焙煎粉砕コーヒー豆が充填されたカラムに、70~120℃の水を供給してコーヒー抽出液を得る第一抽出工程、b)前記第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、125~150℃の水を供給してコーヒー抽出液を得る第二抽出工程、c)前記第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程、および、d)前記第一抽出工程で得られたコーヒー抽出液と、前記蒸発濃縮されたコーヒー抽出液とを混合する工程、を含む、コーヒー抽出液の製造方法である。これにより、コーヒー特有の香りが高められ、かつ雑味が抑えられたコーヒー抽出液を製造することが可能になる。なお、本明細書において、「コーヒー特有の香り」とは、コーヒーの挽きたての甘い香りを意味するものである。
本明細書において、「焙煎粉砕コーヒー豆」とは、コーヒー生豆を加熱して煎り上げる工程、すなわち「焙煎工程」を経たコーヒー豆を粉砕して得られたものを意味する。本発明において、焙煎粉砕コーヒー豆に用いるコーヒー豆の産地や品種は特に限定されない。例えば、コーヒー豆の産地としてはブラジル、コロンビア、タンザニア、モカ、キリマンジェロ、マンデリン、ブルーマウンテンなどが挙げられ、コーヒー豆の品種としてはアラビカ種、ロブスタ種、リベリカ種など等が挙げられる。コーヒー豆は単一産地または単一品種のものを用いても、異なる産地や品種のものを組み合わせて用いてもよい。本発明のコーヒー抽出液の製造方法で使用するコーヒー豆の品種は特に限定されないが、アラビカ種豆またはロブスタ種豆を用いることが好ましい。
本明細書において、「コーヒー抽出液」というときは、コーヒー豆より抽出された液体をいう。コーヒー抽出液としては、焙煎コーヒー豆を水などの溶媒で抽出することにより得られる抽出液、当該抽出液を希釈または濃縮したもの、およびコーヒー豆またはその粉砕物を含有するスラリー等が挙げられる。また、「コーヒー抽出液」を適宜希釈し、任意にその他の原料と混合することで、コーヒー飲料を得ることができる。
本発明のコーヒー抽出液の製造方法では、低温でコーヒー抽出液を抽出する第一抽出工程と、それに続く第一抽出工程で使用された焙煎粉砕コーヒー豆を用いて高温でコーヒー抽出液を抽出する第二抽出工程を含む(図1)。
本発明のコーヒー抽出液の製造方法では、前記第一抽出工程の後に、第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、比較的高温の水を供給してコーヒー抽出液を得る第二抽出工程を含む(図1)。
本発明のコーヒー抽出液の製造方法は、前記第二抽出工程の後に、第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程を含む(図1)。
第二抽出工程は、第一抽出工程で使用された焙煎粉砕コーヒー豆を充填したカラムを用いるため、高温で抽出しても、コーヒー抽出液の抽出効率はそれほど高くない。また、高温でコーヒーを抽出すると、雑味成分も抽出液中に多く含まれてしまう。そこで、本発明のコーヒー抽出液の製造方法では、第二抽出工程後のコーヒー抽出液を蒸発濃縮することで、コーヒー抽出液の濃度を高めると共に、雑味成分を揮発させてコーヒー抽出液中の雑味を抑えることができる。
本発明のコーヒー抽出液の製造方法では、第一抽出工程で得られたコーヒー抽出液と、第二抽出工程後に蒸発濃縮されたコーヒー抽出液とを混合する工程を含む(図1)。前述の通り、第一抽出工程では低温(70~120℃)で抽出することでコーヒー特有の良好な香味が維持されたコーヒー抽出液を得ることができる。また、第二抽出工程後に蒸発蒸留することで、雑味が抑えられた高濃度のコーヒー抽出液を得ることができる。そのため、第一抽出工程で得られたコーヒー抽出液と、第二抽出工程後に蒸発濃縮されたコーヒー抽出液とを混合することで、コーヒー特有の香りが高められ、かつ雑味を抑えられたコーヒー抽出液を製造することができる。
本発明のコーヒー抽出液の製造方法では、第二抽出工程においてコーヒー抽出液を得た後に、カラム内の抽出後の焙煎粉砕コーヒー豆を廃棄すること、カラムを洗浄すること、および洗浄後のカラムに新しい焙煎粉砕コーヒー豆を充填することを含めることもできる。また、前述の新しい焙煎粉砕コーヒー豆が充填されたカラムを、次の第一抽出工程に使用することもできる。
また、本発明のコーヒー抽出液の製造方法には、必要に応じて凍結工程を含めることもできる。
本発明は、一態様では、a)焙煎粉砕コーヒー豆が充填されたカラムに、70~120℃の水を供給してコーヒー抽出液を得る第一抽出工程、b)前記第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、125~150℃の水を供給してコーヒー抽出液を得る第二抽出工程、c)前記第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程、および、d)前記第一抽出工程で得られたコーヒー抽出液と、前記蒸発濃縮されたコーヒー抽出液とを混合する工程、を含む、コーヒー抽出液におけるコーヒー特有の香りを高め、かつ雑味を抑える方法である。これにより、コーヒー抽出液におけるコーヒー特有の香りを高め、かつ雑味を抑えることができる。
(1)焙煎粉砕コーヒー豆の製造
コーヒー生豆(ブラジル産、アラビカ種)をコーヒー焙煎機(Probat社製)で、L値が20になるように焙煎した。その後、前記焙煎コーヒー豆をロールミル(GEA社製)で粉砕して、焙煎粉砕コーヒー豆を得た。
(i)第一抽出工程
抽出カラム(GEA社製:容積23L)に上記(1)で製造した焙煎粉砕コーヒー豆に水で湿潤処理(20wt%)行った後、豆重量7.0kg/カラムとなるように充填し、その後、100℃の水を、抽出温度100℃および流速80kg/時でカラムに供給し、採取液量が3kgになるように抽出を行った。次に2番目のカラムに焙煎粉砕コーヒー豆を、湿潤後豆7.0kg/カラムとなるように充填し、2本連結した状態で同様に、採取液量が3kgになるように抽出を行った。さらに、3番目のカラムに焙煎粉砕コーヒー豆を、湿潤後豆7.0kg/カラムとなるように充填し、3本連結した状態で同様に採取液量が3kgになるように抽出を行った。3回の抽出が行われた1番目のカラムの豆はその後、第二抽出液を採取する工程に送られ、新たに4番目のカラムに焙煎粉砕コーヒー豆を、湿潤後豆7.0kg/カラムとなるように充填し、3本連結した状態で同様に、採取液量が3kgになるように抽出を行った。当該抽出工程を繰り返し(1~18バッチ)、安定した抽出率およびBrix値が得られる10~18バッチの抽出液を混合して、第一抽出工程後のコーヒー抽出液を得た。各バッチの測定結果を表1に示す。最終的な第一抽出工程後のコーヒー抽出液の液量は29.82kg、Brixが29.21%、平均抽出率が17.92%であった。
上記(i)の第一抽出工程で使用した焙煎粉砕コーヒー豆が充填されたカラムを最大4本で直列的に連結した。その後、130℃の水を、抽出温度130℃および流速120kg/時となるようにカラムに供給し、採取液量が25kg、標的抽出率が10%となるように抽出を行った。4回の抽出が終了したカラムから豆を排出した後、新しい豆が充填され、第一抽出工程で新たに使用した。当該抽出工程を繰り返し行い(4~18バッチ:1~3バッチは第一抽出工程が終了していないため第二抽出工程はない。)、安定した抽出率およびBrix値が得られる10~18バッチの抽出液を混合して、第二抽出工程後のコーヒー抽出液を得た。各バッチの測定結果を表1に示す。最終的な第二抽出工程後のコーヒー抽出液の液量は247.74kg、Brixが1.80%、平均抽出率が9.16%であった。
上記(ii)で得られた第二抽出工程後のコーヒー抽出液約250kgを、抽出液中のコーヒー固形分濃度が50%となるように、加熱温度110℃、蒸発温度50℃で濃縮した。上記(ii)で得られた第二抽出工程後のコーヒー抽出液の蒸発蒸留後の液量は5.62kg、Brixが55.18%であった。
・実施例1
上記(i)の第一抽出工程で得られたコーヒー抽出液1.0kgと、上記(iii)の第二抽出工程で得られたコーヒー抽出液を蒸発濃縮して得られたコーヒー抽出液0.297kgとを混合して、サンプル実施例1(連続多管(濃縮あり))を調製した。サンプル実施例1の液量は12.9kg、Brixは34.0%であった。
上記(i)の第一抽出工程で得られたコーヒー抽出液1.0kgと、上記(ii)の第二抽出工程で得られたコーヒー抽出液8.3kgとを混合して、サンプル比較例1(連続多管(濃縮なし))を調製した。サンプル比較例1の液量は9.3kg、Brixは4.75%であった。
抽出カラムに上記(1)で製造した焙煎粉砕コーヒー豆をドリップ抽出して、サンプル比較例2(ドリップ)を調製した。サンプル比較例2の液量は100g、Brixは1.7%であった。
次に、上記(2)で製造した実施例1、比較例1および比較例2を、それぞれBrixが1.3となるように熱水で希釈して、官能評価試験用のサンプル飲料を得た。その後、各サンプル飲料について、専門パネラー(4名)による官能評価を実施した。官能評価では、専門パネラーが各サンプル飲料30mLを飲み、コーヒー特有の香りと雑味の観点から、0~100点で評価した。
<評価基準>
70~100点:コーヒー特有の香味は強く感じられる一方、雑味はほとんど感じられない。
50~69点:コーヒー特有の香味はやや感じられるものの、雑味も少し感じられる。
30~59点:コーヒー特有の香味はあまり感じられるものの、雑味は感じられる。
0~29点:コーヒー特有の香味はほとんど感じられず、雑味は強く感じられる。
本発明のコーヒー抽出液の製造方法では、図3に示す通り、前述の第一抽出工程で得られたコーヒー抽出液を、さらに水蒸気蒸留、減圧水蒸気蒸留、蒸留、減圧蒸留などの方法を用いて、揮発性香気成分を豊富に含有する抽出液(アロマ)と抽出残渣に分画することもできる。さらに、得られた抽出残渣を前述の第二抽出工程で得られたコーヒー抽出液と混合して蒸発濃縮を行うこともできる(図3)。そして、上記分画工程で得られた揮発性香気成分を豊富に含有する抽出液(アロマ)の一部または全部と、前記蒸発濃縮混合液とを混合して、本発明のコーヒー抽出液を製造することもできる。
Claims (8)
- a)焙煎粉砕コーヒー豆が充填されたカラムに、70~120℃の水を、カラム容積1Lあたり1.0~10.0kg/hの流速で供給し、カラム容積1Lあたり0.05~0.50kgの量のコーヒー抽出液を得る第一抽出工程、
b)前記第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、125~150℃の水を、カラム容積1Lあたり1.0~10.0kg/hの流速で供給し、カラム容積1Lあたり0.5~5.0kgの量のコーヒー抽出液を得る第二抽出工程、
c)前記第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程、および、
d)前記第一抽出工程で得られたコーヒー抽出液と、前記蒸発濃縮されたコーヒー抽出液とを混合する工程、
を含む、コーヒー抽出液の製造方法。 - 前記第一抽出工程で使用するカラムが、直列的に連結された複数のカラムである、請求項1に記載の製造方法。
- 前記第一抽出工程における抽出温度が90~110℃である、請求項1または2に記載の製造方法。
- 前記第二抽出工程で使用するカラムが、直列的に連結された複数のカラムである、請求項1~3のいずれか1項に記載の製造方法。
- 前記第二抽出工程における抽出温度が125~140℃である、請求項1~4のいずれか1項に記載の製造方法。
- さらに、前記第二抽出工程においてコーヒー抽出液を得た後に、カラム内の抽出後の焙煎粉砕コーヒー豆を廃棄すること、カラムを洗浄すること、および洗浄後のカラムに新しい焙煎粉砕コーヒー豆を充填することを含み、ここで、新しい焙煎粉砕コーヒー豆が充填された前記カラムが次の第一抽出工程に使用されるものである、請求項1~5のいずれか1項に記載の製造方法。
- さらに、
工程a)の後に、第一抽出工程で得られたコーヒー抽出液を、揮発性香気成分を豊富に含有する抽出液(アロマ)と抽出残渣に分画する工程a’)、および、
工程b)の後に、前記抽出残渣を、第二抽出工程で得られたコーヒー抽出液と混合する工程b’)、
を含み、
工程c)において、前記抽出残渣と第二抽出工程で得られたコーヒー抽出液との前記混合液を蒸発濃縮し、
工程d)において、前記工程a’)で得られた揮発性香気成分を豊富に含有する抽出液(アロマ)の一部または全部と、前記蒸発濃縮混合液とを混合する、
請求項1~6のいずれか1項に記載の製造方法。 - コーヒー抽出液におけるコーヒー特有の香りを高め、かつ雑味を抑える方法であって、
a)焙煎粉砕コーヒー豆が充填されたカラムに、70~120℃の水を、カラム容積1Lあたり1.0~10.0kg/hの流速で供給し、カラム容積1Lあたり0.05~0.50kgの量のコーヒー抽出液を得る第一抽出工程、
b)前記第一抽出工程で使用された焙煎粉砕コーヒー豆充填カラムに、125~150℃の水を、カラム容積1Lあたり1.0~10.0kg/hの流速で供給し、カラム容積1Lあたり0.5~5.0kgの量のコーヒー抽出液を得る第二抽出工程、
c)前記第二抽出工程で得られたコーヒー抽出液を蒸発濃縮する工程、および、
d)前記第一抽出工程で得られたコーヒー抽出液と、前記蒸発濃縮されたコーヒー抽出液とを混合する工程、
を含む、前記方法。
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| WO2022122716A1 (en) * | 2020-12-08 | 2022-06-16 | Koninklijke Douwe Egberts B.V | A method of producing a coffee product |
| RU2841162C1 (ru) * | 2020-12-08 | 2025-06-03 | Конинклейке Дауве Эгбертс Б.В. | Способ получения кофейного продукта |
| EP4381952A4 (en) * | 2021-08-03 | 2025-08-06 | Suntory Holdings Ltd | COFFEE BEAN EXTRACT HAVING IMPROVED FLAVOR, FOOD OR BEVERAGE, PACKAGED BEVERAGE, AND METHOD FOR PRODUCING COFFEE BEAN EXTRACT |
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| JP2018113986A (ja) * | 2018-04-11 | 2018-07-26 | ユーシーシー上島珈琲株式会社 | コーヒー飲料の製造方法 |
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| US5204136A (en) | 1988-07-13 | 1993-04-20 | Douwe Egbets Koninklijke Tabaksfa-Briek-Koffiebranderijen-Theehandel N.V. | Process for extracting coffee |
| NL1030178C2 (nl) * | 2005-10-12 | 2007-04-13 | Sara Lee De Nv | Werkwijze voor het bereiden van een koffie-extract, alsmede het daarmee te verkrijgen extract. |
| PL3240433T3 (pl) * | 2015-01-02 | 2019-09-30 | Koninklijke Douwe Egberts B.V. | Ciekły koncentrat kawy espresso |
| JP2023020370A (ja) | 2021-07-30 | 2023-02-09 | ヤマハ発動機株式会社 | 船外機 |
| JP7611530B2 (ja) | 2021-08-10 | 2025-01-10 | パナソニックIpマネジメント株式会社 | インパクト回転工具 |
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2019
- 2019-06-04 US US17/297,144 patent/US11805786B2/en active Active
- 2019-06-04 PH PH1/2021/551255A patent/PH12021551255B1/en unknown
- 2019-06-04 JP JP2020557548A patent/JP7431748B2/ja active Active
- 2019-06-04 WO PCT/JP2019/022223 patent/WO2020110353A1/ja not_active Ceased
- 2019-06-04 MY MYPI2021002941A patent/MY203157A/en unknown
- 2019-06-04 BR BR112021010303-1A patent/BR112021010303A2/pt not_active Application Discontinuation
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2021
- 2021-06-23 CO CONC2021/0008206A patent/CO2021008206A2/es unknown
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| US4277509A (en) * | 1977-10-06 | 1981-07-07 | D.E.J. International Research Company B.V. | Process for extracting ground roasted coffee |
| JPH02119748A (ja) * | 1988-07-13 | 1990-05-07 | Douwe Egberts Tabaksfab Koffiebrand Teehandel Bv | コーヒー抽出方法 |
| JP2014521346A (ja) * | 2011-08-01 | 2014-08-28 | コーニンクラケ ダウ エグバート ビー.ブイ. | 液体コーヒー濃縮物の製造方法 |
| JP2016504923A (ja) * | 2013-02-05 | 2016-02-18 | コーニンクラケ ダウ エグバート ビー.ブイ. | 液体コーヒー濃縮物の製造方法 |
| JP2018500040A (ja) * | 2015-01-02 | 2018-01-11 | コーニンクラケ ダウ エグバート ビー.ブイ. | 液体エスプレッソ濃縮物 |
| JP2018113986A (ja) * | 2018-04-11 | 2018-07-26 | ユーシーシー上島珈琲株式会社 | コーヒー飲料の製造方法 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021241112A1 (ja) * | 2020-05-26 | 2021-12-02 | サントリーホールディングス株式会社 | コーヒー抽出液の製造方法 |
| WO2022122716A1 (en) * | 2020-12-08 | 2022-06-16 | Koninklijke Douwe Egberts B.V | A method of producing a coffee product |
| AU2021393892B2 (en) * | 2020-12-08 | 2025-04-17 | Koninklijke Douwe Egberts B.V | A method of producing a coffee product |
| RU2841162C1 (ru) * | 2020-12-08 | 2025-06-03 | Конинклейке Дауве Эгбертс Б.В. | Способ получения кофейного продукта |
| EP4381952A4 (en) * | 2021-08-03 | 2025-08-06 | Suntory Holdings Ltd | COFFEE BEAN EXTRACT HAVING IMPROVED FLAVOR, FOOD OR BEVERAGE, PACKAGED BEVERAGE, AND METHOD FOR PRODUCING COFFEE BEAN EXTRACT |
Also Published As
| Publication number | Publication date |
|---|---|
| PH12021551255B1 (en) | 2024-06-21 |
| PH12021551255A1 (en) | 2021-10-25 |
| MY203157A (en) | 2024-06-12 |
| US20220030903A1 (en) | 2022-02-03 |
| BR112021010303A2 (pt) | 2021-08-24 |
| US11805786B2 (en) | 2023-11-07 |
| CO2021008206A2 (es) | 2021-06-30 |
| JPWO2020110353A1 (ja) | 2021-10-14 |
| JP7431748B2 (ja) | 2024-02-15 |
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