CN102422959A - Method for preparing instant coffee by ultrasonic-assisted extraction - Google Patents
Method for preparing instant coffee by ultrasonic-assisted extraction Download PDFInfo
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- CN102422959A CN102422959A CN2011103777795A CN201110377779A CN102422959A CN 102422959 A CN102422959 A CN 102422959A CN 2011103777795 A CN2011103777795 A CN 2011103777795A CN 201110377779 A CN201110377779 A CN 201110377779A CN 102422959 A CN102422959 A CN 102422959A
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- coffee
- ultrasonic
- temperature
- extraction
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- 235000021539 instant coffee Nutrition 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002137 ultrasound extraction Methods 0.000 title claims abstract description 12
- 235000013353 coffee beverage Nutrition 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000605 extraction Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 19
- 238000009210 therapy by ultrasound Methods 0.000 claims description 18
- 238000005352 clarification Methods 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 238000004108 freeze drying Methods 0.000 claims description 6
- 230000002000 scavenging effect Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 6
- 230000007062 hydrolysis Effects 0.000 abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 239000000706 filtrate Substances 0.000 abstract 4
- 238000000746 purification Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 240000007154 Coffea arabica Species 0.000 description 33
- 238000011084 recovery Methods 0.000 description 17
- 238000009413 insulation Methods 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 5
- 150000004676 glycans Chemical class 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920001282 polysaccharide Polymers 0.000 description 5
- 239000005017 polysaccharide Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 241000533293 Sesbania emerus Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241000723377 Coffea Species 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 241001107098 Rubiaceae Species 0.000 description 2
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 235000007460 Coffea arabica Nutrition 0.000 description 1
- 102000003886 Glycoproteins Human genes 0.000 description 1
- 108090000288 Glycoproteins Proteins 0.000 description 1
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 1
- 241000238370 Sepia Species 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 150000003797 alkaloid derivatives Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960001948 caffeine Drugs 0.000 description 1
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229930003944 flavone Natural products 0.000 description 1
- 150000002213 flavones Chemical class 0.000 description 1
- 235000011949 flavones Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000013332 literature search Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
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- Tea And Coffee (AREA)
Abstract
The invention discloses a method for preparing instant coffee by ultrasonic-assisted extraction, which is an ultrasonic-high-temperature hydrolysis two-stage extraction process: first, dispersing roasted coffee powder in hot water for soaking, processing the solution by ultrasonic at ordinary pressure for a certain time and filtering the solution to obtain the first filtrate and the first residue; then placing the first residue in a high-pressure container and extracting the first residue with high-temperature water; after the high-temperature processing, filtering the solution to obtain the second filtrate and the second residue; and combining the first filtrate and the second filtrate after extraction, carrying out centrifugal purification, concentration and drying to obtain the instant coffee. Compared with the traditional high-temperature and high-pressure extraction method, the method has a much higher extraction rate of the soluble substance in the coffee, the average extraction rate is over 10% higher than that of the single high-temperature extraction method; besides, the method is convenient to operate, time-saving and energy-efficient; and the increment is realized.
Description
Technical field
The invention belongs to the instant coffee processing technique field, specifically, relate to the method that a kind of ultrasonic-assisted extraction prepares instant coffee.
Background technology
Coffee (
Coffee) be Coffea (
Coffea) Rubiaceae (
Rubiaceae) fruit of shrub coffee tree, the beans shape seed of removing after the pulp promptly is referred to as coffee bean.Coffee bean is fried, is pulverized and process roasted coffee through roasting, and outward appearance is a sepia, has the special fragrance of coffee, and roasting is fried beans through pulverizing, and adds poach system, filtration, and filtrating is coffee for drinking, but it drinks trouble.1938; Doctor Max.Morgenthaler of Nestle company has successfully found solubility dry in the extraction coffee (being the water-soluble substances in the coffee) finally and has been made into the appropriate method of dry powder; Instant coffee also just arises at the historic moment, and becomes the coffee beverage that makes things convenient for that consumers in general like soon.
Instant coffee is can consoluet coffee powder or particle when in hot water, reconstituting; Be to extract solable matter (main component comprises the glycoprotein caffeine) through water by roasted coffee; Extract through concentrate, dry and process, the basic process of production of instant coffee is: coffee bean → baking → grinding (pulverizing) → water extraction → extract concentration and evaporation → drying (spray-drying or freeze-drying) → packing.
In the production of instant coffee, the process that the water-soluble substances in the coffee powder that roasting is fried and appropriateness is pulverized is extracted is called extracting, and extracting is the important step that is related to product yield and quality in the instant coffee production.
Traditional method for extracting is simple HTHP extraction method; Coffee powder is placed high pressure diafiltration container, in an operation cycle, accomplish following process: insoluble carbohydrate breakdown produces and is partly dissolved thing under the stripping of moistening, the solable matter of coffee powder, the high temperature.Usually, temperature is high more, and recovery rate is also high more, and in suitability for industrialized production, in order to obtain higher recovery rate, manufacturer tends to improve merely temperature, can significantly increase energy resource consumption like this, has also increased the danger of extracting operation simultaneously.
Ultrasonic wave has characteristics such as frequency height, wavelength is short, penetration power is strong.Extraction by Ultrasound is mechanical effect, cavitation effect and a fuel factor of utilizing ultrasonic wave to have, and through increasing the movement velocity of material molecule, the penetration power of enhancing substance is with the method for effective component extracting.At present, ultrasonic technology is widely used in the extraction of pharmaceutically active ingredient among the overwhelming majority such as saponin(e, alkaloid, flavones, polysaccharide, and have save time, energy-conservation, avoid destruction, solvent load few, the recovery rate advantages of higher of conventional extraction method to heat-sensitive substance.
Through literature search, prepare the instant coffee technical elements in the extraction of coffee with ultrasonic-assisted extraction, do not see the technology report identical with the present invention.
Summary of the invention
The object of the present invention is to provide a kind of ultrasonic-assisted extraction to prepare the method for instant coffee, adopt ultrasonic wave that the coffee that is soaked in the hot water is carried out the extraction first time, filter; Filter residue is heated to certain temperature again and carries out pyrohydrolysis, can obviously improve the recovery rate of water soluble ingredient in the coffee.
The inventive method can be described as ultrasonic wave-pyrohydrolysis two-phase method extraction process again: at first; To be scattered in a certain amount of hot water through the roasted coffee powder of conventional method preparation; Under normal pressure, use the ultrasonic Treatment regular hour; Filtration obtains first filtrating and first filter residue (contain more fragrance ingredient in first filtrating that obtains this moment, can be referred to as fragrant liquid); Second step placed high-pressure bottle with first filter residue, used the high-temperature water lixiviate, after the high-temperature process, filtered and obtained second filtrating and second filter residue, merged the filtrating of extracted twice gained, through centrifugal clarification, concentrated, dry, promptly got instant coffee.
The present invention solves the concrete technical scheme that its technical problem adopts:
By weight; get 1 part in roasted coffee powder; be scattered in 6～8 parts of temperature and be in 60 ℃ the hot water; soaked 30 minutes; place then in the Extraction by Ultrasound device, regulate temperature, start ultrasonic Treatment 30～60 minutes; filter and obtain filtrating and filter residue (filtrating of this moment is called first to be filtrated, and filter residue is called first filter residue) at 50～90 ℃; First filter residue is packed in the autoclave; The water that adds 3～5 parts (in coffee powder samples); Sealing is heated to 180～220 ℃, under steady temperature, is incubated 20～40 minutes; At high temperature make the insoluble polysaccharide partial hydrolysis of water in the coffee become the little molecule of solubility; Start the cooling water water pump after insulation is accomplished, the coffee material is cooled to 70 ℃, open autoclave by the cooling coil in the autoclave; Emit feed liquid and filtration, obtain second filtrating and second filter residue; First filtrating and second filtrating are merged, and further removing the particulate of suspension, the scavenging solution that obtains after centrifugal concentrates through conventional vacuum with the centrifuge centrifugal clarification, freeze drying and get instant coffee.
The frequency of ultrasonic Treatment described in the present invention is 20～80khz, times 30～60 min.
For effect of the present invention is described better, change the Extraction by Ultrasound in the aforesaid operations process into common 90 ℃ of hot water extracting, and then carry out same pyrohydrolysis and extract, other operation is all identical, compares with the inventive method, and calculates recovery rate.
Recovery rate (butt) by formula (1) calculates:
In the formula: M
0Be the coffee powder sample quality; E is the moisture in the raw material coffee powder;
M
1Be the instant coffee products quality; C is the moisture in the product instant coffee.
The invention has the beneficial effects as follows:
Adopt the inventive method, can obviously improve the recovery rate of coffee, and simple and easy to do; Avoided the conventional direct HTHP extraction method destruction to flavor substance, solvent load is few, compare with traditional simple HTHP extraction method have energy-conservation; Save time, increase income, advantage such as product special flavour is good.
The specific embodiment
Provide the concrete embodiment of the present invention below the present invention is described further, but protection scope of the present invention is not limited to said content.
Embodiment 1: this ultrasonic-assisted extraction prepares the method for instant coffee, and concrete steps are following:
By weight, get roasted coffee powder 1kg, be scattered in the 6kg temperature and be in 60 ℃ the hot water; Soaked 30 minutes, and placed then in the Extraction by Ultrasound device, regulate temperature at 50 ℃; Ultrasonic frequency is 80 khz; Ultrasonic Treatment 30 minutes is filtered and is obtained filtrating and filter residue (filtrating of this moment is called first filtrating, and filter residue is called first filter residue); First filter residue is packed in the autoclave, add the water of 3kg, sealing; Be heated to 180 ℃,, at high temperature make the insoluble polysaccharide partial hydrolysis of water in the coffee become the little molecule of solubility 180 ℃ of down insulations 20 minutes; Start the cooling water water pump after insulation is accomplished, the coffee material is cooled to 70 ℃, open autoclave through the cooling coil in the autoclave; Emit feed liquid and filtration, obtain second filtrating and second filter residue; First filtrating and second filtrating are merged, and further removing the particulate of suspension, the scavenging solution that obtains after centrifugal concentrates through vacuum with the centrifuge centrifugal clarification, freeze drying and get instant coffee.Measure the moisture of raw material and instant coffee, by formula recovery rate is calculated in (1).Using the recovery rate of ultrasonic Treatment is 37.12%, and the recovery rate of not making ultrasonic Treatment is 33.35%, and the recovery rate of ultrasonic Treatment has increased by 3.77%, and increment rate is 11.30%.
Embodiment 2: this ultrasonic-assisted extraction prepares the method for instant coffee, and concrete steps are following:
By weight, get roasted coffee powder sample 1kg, be scattered in the 7kg temperature and be in 60 ℃ the hot water; Soaked 30 minutes, and placed then in the Extraction by Ultrasound device, regulate temperature at 70 ℃; Ultrasonic frequency is 60khz; Ultrasonic Treatment 45 minutes is filtered and is obtained filtrating and filter residue (filtrating of this moment is called first filtrating, and filter residue is called first filter residue); First filter residue is packed in the autoclave, add the water of 4kg, sealing; Be heated to 200 ℃,, at high temperature make the insoluble polysaccharide partial hydrolysis of water in the coffee become the little molecule of solubility 200 ℃ of down insulations 30 minutes; Start the cooling water water pump after insulation is accomplished, the coffee material is cooled to 70 ℃, open autoclave through the cooling coil in the autoclave; Emit feed liquid and filtration, obtain second filtrating and second filter residue; First filtrating and second filtrating are merged, and further removing the particulate of suspension, the scavenging solution that obtains after centrifugal concentrates through vacuum with the centrifuge centrifugal clarification, freeze drying and get instant coffee.Using the recovery rate of ultrasonic Treatment is 40.33%, and the recovery rate of not making ultrasonic Treatment is 35.80%, and the recovery rate of ultrasonic Treatment has increased by 4.53%, and increment rate is 12.65%.
Embodiment 3: this ultrasonic-assisted extraction prepares the method for instant coffee, and concrete steps are following:
By weight, get roasted coffee powder sample 1kg, be scattered in the 8kg temperature and be in 60 ℃ the hot water; Soaked 30 minutes, and placed then in the Extraction by Ultrasound device, regulate temperature at 90 ℃; Ultrasonic frequency is 20khz; Start ultrasonic Treatment 60 minutes, filter and obtain filtrating and filter residue (filtrating of this moment is called first filtrating, and filter residue is called first filter residue); First filter residue is packed in the autoclave, add the water of 5kg, sealing; Be heated to 220 ℃,, at high temperature make the insoluble polysaccharide partial hydrolysis of water in the coffee become the little molecule of solubility 220 ℃ of down insulations 40 minutes; Start the cooling water water pump after insulation is accomplished, the coffee material is cooled to 70 ℃, open autoclave through the cooling coil in the autoclave; Emit feed liquid and filtration, obtain second filtrating and second filter residue; First filtrating and second filtrating are merged, and further removing the particulate of suspension, the scavenging solution that obtains after centrifugal concentrates through vacuum with the centrifuge centrifugal clarification, freeze drying and get instant coffee.Using the recovery rate of ultrasonic Treatment is 44.50%, and the recovery rate of not making ultrasonic Treatment is 38.67%, and the recovery rate of ultrasonic Treatment has increased by 5.83%, and increment rate is 15.08%.
Claims (3)
1. a ultrasonic-assisted extraction prepares the method for instant coffee, it is characterized in that: at first the roasted coffee powder is scattered in the hot water and soaks, under normal pressure, use the ultrasonic Treatment regular hour, filter and obtain first filtrating and first filter residue; Then first filter residue is placed high-pressure bottle, use the high-temperature water lixiviate, after the high-temperature process, filter and obtain second filtrating and second filter residue, merge the filtrating of extracted twice gained,, promptly get instant coffee through centrifugal clarification, concentrated, dry.
2. ultrasonic-assisted extraction according to claim 1 prepares the instant coffee method, it is characterized in that specifically carrying out as follows:
(1) get the roasted coffee powder, put into temperature and be 60 ℃ hot water, soaked 30 minutes, the weight ratio of coffee powder and water is 1:6～8;
(2) soak the back coffee powder and place in the Extraction by Ultrasound device, under 50～90 ℃, carry out ultrasonic Treatment, filter and obtain first filtrating and first filter residue;
(3) in first filter residue, add the water of 3～5 times of coffee powder weight, under 180～220 ℃ of temperature, be incubated 20～40 minutes, be cooled to 70 ℃ and filter, obtain second filtrating and second filter residue; First filtrating and second filtrating are merged, and filtrating is further removed the particulate of suspension with the centrifuge centrifugal clarification, and the scavenging solution that obtains after centrifugal is concentrated through vacuum, and freeze drying promptly gets instant coffee.
3. ultrasonic-assisted extraction according to claim 1 and 2 prepares the instant coffee method, it is characterized in that: the frequency of ultrasonic Treatment is 20～80khz, times 30～60 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103777795A CN102422959B (en) | 2011-11-24 | 2011-11-24 | Method for preparing instant coffee by ultrasonic-assisted extraction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103777795A CN102422959B (en) | 2011-11-24 | 2011-11-24 | Method for preparing instant coffee by ultrasonic-assisted extraction |
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| Publication Number | Publication Date |
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| CN102422959A true CN102422959A (en) | 2012-04-25 |
| CN102422959B CN102422959B (en) | 2013-11-27 |
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| CN2011103777795A Expired - Fee Related CN102422959B (en) | 2011-11-24 | 2011-11-24 | Method for preparing instant coffee by ultrasonic-assisted extraction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102763752A (en) * | 2012-07-25 | 2012-11-07 | 北京中科健宇生物科技有限公司 | Instant functional maca coffee and production method thereof |
| CN106212835A (en) * | 2016-07-25 | 2016-12-14 | 王志远 | One kind coffee |
| CN108421279A (en) * | 2018-02-27 | 2018-08-21 | 江苏大学 | A kind of method that frequency sweep ultrasonic strengthens Subcritical Water Extraction arrowhead nutritional ingredient |
| GB2601759A (en) * | 2020-12-08 | 2022-06-15 | Douwe Egberts Bv | A method of producing a coffee product |
| CN115769848A (en) * | 2022-12-09 | 2023-03-10 | 苏州金猫咖啡有限公司 | Instant coffee and production method and production device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB877784A (en) * | 1957-01-09 | 1961-09-20 | Curtiss Wright Corp | Improved method and means for making a beverage concentrate |
| US4983412A (en) * | 1986-12-22 | 1991-01-08 | Melitta-Werke Bentz & Sohn | Method and device for producing aqueous extracts from coffee |
| JPH0387142A (en) * | 1989-08-12 | 1991-04-11 | M K Denshi:Kk | Method for extracting coffee, teas or the like with cold water and apparatus therefor |
| CN101267743A (en) * | 2005-07-18 | 2008-09-17 | 卡夫食品集团公司 | Enzyme-assisted soluble coffee production |
| CN101321468A (en) * | 2005-10-27 | 2008-12-10 | 稻畑香料株式会社 | Method for production of coffee extract |
-
2011
- 2011-11-24 CN CN2011103777795A patent/CN102422959B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB877784A (en) * | 1957-01-09 | 1961-09-20 | Curtiss Wright Corp | Improved method and means for making a beverage concentrate |
| US4983412A (en) * | 1986-12-22 | 1991-01-08 | Melitta-Werke Bentz & Sohn | Method and device for producing aqueous extracts from coffee |
| JPH0387142A (en) * | 1989-08-12 | 1991-04-11 | M K Denshi:Kk | Method for extracting coffee, teas or the like with cold water and apparatus therefor |
| CN101267743A (en) * | 2005-07-18 | 2008-09-17 | 卡夫食品集团公司 | Enzyme-assisted soluble coffee production |
| CN101321468A (en) * | 2005-10-27 | 2008-12-10 | 稻畑香料株式会社 | Method for production of coffee extract |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102763752A (en) * | 2012-07-25 | 2012-11-07 | 北京中科健宇生物科技有限公司 | Instant functional maca coffee and production method thereof |
| CN102763752B (en) * | 2012-07-25 | 2013-11-20 | 北京中科健宇生物科技有限公司 | Instant functional maca coffee and production method thereof |
| CN106212835A (en) * | 2016-07-25 | 2016-12-14 | 王志远 | One kind coffee |
| CN108421279A (en) * | 2018-02-27 | 2018-08-21 | 江苏大学 | A kind of method that frequency sweep ultrasonic strengthens Subcritical Water Extraction arrowhead nutritional ingredient |
| GB2601759A (en) * | 2020-12-08 | 2022-06-15 | Douwe Egberts Bv | A method of producing a coffee product |
| WO2022122716A1 (en) | 2020-12-08 | 2022-06-16 | Koninklijke Douwe Egberts B.V | A method of producing a coffee product |
| GB2601759B (en) * | 2020-12-08 | 2023-04-26 | Douwe Egberts Bv | A method of producing a coffee product |
| CN115769848A (en) * | 2022-12-09 | 2023-03-10 | 苏州金猫咖啡有限公司 | Instant coffee and production method and production device thereof |
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| CN102422959B (en) | 2013-11-27 |
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