CN106035921A - Method for producing high quality coffee concentrated solution - Google Patents
Method for producing high quality coffee concentrated solution Download PDFInfo
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- CN106035921A CN106035921A CN201610421797.1A CN201610421797A CN106035921A CN 106035921 A CN106035921 A CN 106035921A CN 201610421797 A CN201610421797 A CN 201610421797A CN 106035921 A CN106035921 A CN 106035921A
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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
- A23F5/30—Drying or concentrating coffee extract by freezing out the water
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Abstract
The invention discloses a method for producing high quality coffee concentrated solution. The method comprises the following steps of raw bean baking, grinding, countercurrent cold extraction, filtration centrifugation, freeze concentration, CO2 filling, filling and cold storage. The product is rich in coffee aroma, mellow in taste, pure in flavor and good in stability. Low temperature non-thermal processing technologies and CO2 filling are effectively combined, and the low temperature non-thermal processing technologies such as countercurrent cold extraction and freeze concentration are adopted to process the coffee concentrated solution, so that volatile aroma and active ingredients of coffee can be stored completely. The CO2 filling technology is adopted to isolate oxygen to prevent oil oxidation in the coffee concentrated solution and oxidation browning of nutrient substances, growth and reproduction of microorganisms are restrained, and even the microorganisms die due to damage of growth conditions. The low temperature non-thermal processing technologies and the CO2 filling are effectively combined, so that not only is the high quality of the coffee concentrated solution guaranteed, but also the stability problem of the coffee concentrated solution is effectively solved, the guarantee period of the coffee concentrated solution is prolonged, and the industrial production of the coffee concentrated solution is achieved.
Description
Technical field
The present invention relates to food processing field, be specifically related to the production method of a kind of high-quality liquid coffee concentrate.
Background technology
Coffee and Folium Camelliae sinensis, cocoa the referred to as big beverage plant in the world three, the whole world there are about the population of 1/3rd and drinks, coffee
Coffee is only second to oil in global trade volume.Coffee contains rich in protein, crude fibre, crude fat, caffeine etc., because it has
Unique sweet-smelling taste and refresh oneself, excited effect, be increasingly becoming the indispensable daily beverage of modern.
At present in the production technology of instant coffee and liquid coffee concentrate, major part uses hot water even High Temperature High Pressure extraction
Taking, hot water or High Temperature High Pressure extract and easily cause the loss of coffee aroma and the destruction of effective ingredient, and coffee extract
Local flavor directly affects the quality of liquid coffee concentrate.Enrichment process in the production technology of liquid coffee concentrate and instant coffee at present
Substantially using vacuum evaporation, the loss of concentration process aroma substance is relatively big, and liquid coffee concentrate mouthfeel is the best, and energy consumption is higher.
And for the application in terms of coffee concentration of the membrance concentration technology, easily polluted by film and lost efficacy, cost is high, to affect coffee dense simultaneously
The factor impacts such as contracting liquid quality, effect is unsatisfactory.
At present in the production of liquid coffee concentrate, another technical barrier run into is the instability problem of liquid coffee concentrate
(precipitation, local flavor souring etc.), cause the liquid coffee concentrate shelf-life shorter, and quality is unstable, it is impossible to industrialized production.And affect coffee
The possible cause significant portion of coffee concentrated solution stability problem is because the heat treatment (hot dipping carries, heat concentrates) of early stage and causes coffee
Part effective ingredient degeneration in concentrated solution, becomes unstable, at later stage storage process, is easily generated polymerization, group transfer etc.
Reaction, thus produce the phenomenons such as precipitation, souring, finally have a strong impact on liquid coffee concentrate quality.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that one gives off a strong fragrance, mouthfeel alcohol just, local flavor pure
Only, the production method of the high-quality liquid coffee concentrate of good stability.
For achieving the above object, the present invention adopts the following technical scheme that
The production method of a kind of high-quality liquid coffee concentrate, comprises the following steps:
1) give birth to bean to bakee, grind: carry out bakeing, grinding by raw for coffee bean, be ground to particle diameter 8-40 mesh, obtain coffee particles；
2) the coldest extraction: coffee particles is put in countercurrent extraction equipment, add water carry out adverse current cold extraction, described coffee particles with
The weight ratio of water is 1:2-5, extraction temperature 4-25 DEG C, extraction time 45-90min, collects extract；
3) filter centrifugation: the extract of above-mentioned collection is filtered, centrifugal；
4) freeze concentration: by above-mentioned centrifugal after extract be cooled to-1.5 DEG C to-15 DEG C, make in extract a part of water with ice
Brilliant form separates out, and is separated by ice crystal, make extract be concentrated to give concentrated solution from extract；
5) CO is filled2: the above-mentioned concentrated solution of fill forward direction is filled with CO2,
6) fill: fill CO to above-mentioned2Concentrated solution after process carries out sterile filling, obtains liquid coffee concentrate.
7) cold preservation: described liquid coffee concentrate cold preservation is in 0-4 DEG C of environment
Further, described step 2) the coldest extraction employing Double helix counter-current extraction, coffee particles moves in opposite directions with water.Institute
Stating the countercurrent extraction equipment that countercurrently cold extraction is used is seal, and jacketed, logical cooling water, cooling water temperature 4-25 in chuck
℃。
Described step 3) extract first filters with 100-300 mesh filter screen, then with horizontal type screw settling centrifuge or dish-style from
Scheming is centrifuged, the centrifugal rotational speed ＞ 2000r/min of described horizontal type screw settling centrifuge, the centrifugal rotational speed of described disk centrifugal separator
＞ 6000 r/min.
In the coffee grounds that the coffee grounds that described centrifuge is discharged is discharged after being merged into the cold extraction of adverse current, enter back into column extractor
In carry out High Temperature High Pressure extraction, be used for producing instant powder.
Preferably, described step 4) is concentrated into the concentration of concentrated solution is 25-30Brix.
The freeze concentration of described step 4) uses segmentation method for concentration, first uses progressive laminated crystalline formula freeze concentration to obtain
Concentration is the concentrated solution of 10-15Brix, then to use suspension crystallization formula freeze concentration to continue concentrated solution to be concentrated into concentration be 25-
30Brix。
The ice crystal that described step 4) freeze concentration process produces is re-used as step 2 after melting) the extraction water of the coldest extraction.
The CO that described step 5) is filled with2For food-class CO2CO is filled used by,2Technology is injecting type hybrid technology, CO2It is filled with
Amount is CO2Air-capacitor amount (20 DEG C) >=2.0 times of volumes.
In the production process of described liquid coffee concentrate, all storage buckets for storing extract or concentrated solution disappear in cleaning
CO it is filled with immediately after poison2, keep tank pressure 0.15-0.20MPa, then input extract or concentrated solution.
Compared with traditional coffee concentrated solution production technology, the production method master of the high-quality liquid coffee concentrate that the present invention provides
Carry out the improvement of following three aspects, to solve the problem that liquid coffee concentrate fragrance loss is serious and product is unstable:
(1) the cold extraction of adverse current is used to extract for traditional hot water even High Temperature High Pressure
Traditional hot water or High Temperature High Pressure extraction easily cause the loss of coffee aroma and the destruction of effective ingredient, and coffee extracts
The local flavor taking liquid directly affects the quality of liquid coffee concentrate, so extraction way choice is critically important.
The coldest extraction is the extracting process combined with cold extraction by counter-current extraction, and extraction process coffee particles and water are along phase negative side
Being to seal and jacketed to motion, the hydromining cold water of temperature 4-7 DEG C, and countercurrent extraction equipment, in chuck, logical cooling water, protects
The water temperature of card extraction cold water.Cold extraction can completely preserve volatile aroma and the effective ingredient of coffee, it is ensured that liquid coffee concentrate
Local flavor and quality.And on the basis of cold extraction, for ensureing the yield of extraction, the present invention uses Double helix counter-current extraction, compares list
Spiral, the flight of Double helix overlap plays the effect of stirring, coffee particles can be made to meet rapidly water and moisten, make coffee particles and water
Fully, extraction fully, improves extraction efficiency and yield in exchange.And the degree that deflects downwards that single-screw produces because of gravity is along with single spiral shell
Revolve the increase of length and significantly become big, cause flight easily to contact with equipment wall surface and produce scraped finish or subregion spiral
Sheet and wall excesssive gap and cause effect of extracting the best, and Double helix countercurrent extraction equipment is because ensureing same effect of extracting
In the case of, it is greatly shortened the length of extraction equipment, thus ensures the stability of equipment.
Because of restriction and the needs of guarantee liquid coffee concentrate best flavor of adverse current cold extraction extraction yield, coffee particles is in adverse current
A lot of compositions are also had also not extract after cold extraction, as coffee grounds is drained directly as garbage, then coffee particles whole utilization
Rate is relatively low, and the production cost causing liquid coffee concentrate also can be the highest.The present invention considers from industrialization angle, will the cold extraction of adverse current
The coffee grounds discharged is delivered in column extractor carry out High Temperature High Pressure extraction, is used for producing instant coffee powder, effectively by inverse
Flow cold extraction and High Temperature High Pressure extraction combines, can be used for industrialization and produce continuously, improve coffee utilization rate, reduce cost.
(2) frozen concentrated liquid is used to replace traditional vacuum evaporation
Enrichment process in the production technology of liquid coffee concentrate and instant coffee uses vacuum evaporation substantially at present, concentrated
The loss of journey aroma substance is relatively big, and liquid coffee concentrate mouthfeel is the best, and energy consumption is higher.There is data to suggest that, the heat of vaporization of water is
2260kJ/kg, the heat of fusion of ice is 336 kJ/kg, and the former is 6.7 times of the latter, i.e. in the condition assuming other conditions constant
Under, heat concentrates also high than the energy consumption of freeze concentration 6.7 times.
Freeze concentration is under cryogenic, temperature below 0 DEG C, in extract a part of water with the form of ice from extraction
Liquid is separated, the method that extract is concentrated.Freeze concentration can completely preserve the volatile aroma and effectively of coffee
Composition, it is ensured that the local flavor of liquid coffee concentrate and quality.And use adverse current cold extraction and freeze concentration integrated low temperature non-heating power processing
Technology processing liquid coffee concentrate, can solve the stability problem of liquid coffee concentrate, because the possibility that liquid coffee concentrate is unstable
Reason significant portion is because the heat treatment (hot dipping carries, heat concentrates) of early stage and causes the part effective ingredient in liquid coffee concentrate to become
Property, become unstable, at later stage storage process, be easily generated polymerization, group transfer etc. reaction, thus produce precipitation, souring etc.
Wild effect.
The cold extraction of adverse current that the present invention uses and the integrated low temperature non-heating power process technology of freeze concentration, effectively by the coldest for adverse current
Extraction is combined with freeze concentration, the ice crystal that freeze concentration produces is used for the cold extraction of adverse current, recycles, not only significantly solve at present
Freeze concentration process is higher because of ice crystal entrainment rate, causes being lost relatively big, and limits the industrialized application problem of freeze concentration, also may be used
To save the energy consumption needed for extraction use water refrigeration, re-use the ice crystal that freeze concentration produces, be greatly saved the energy and water resource.
Meanwhile, the present invention uses the cold extraction of adverse current and the integrated low temperature non-heating power process technology of freeze concentration, it is ensured that feed liquid
Production process whole process is in cryogenic conditions, and cryogenic conditions can effectively suppress growth and the breeding of microorganism.At the raw bean warp of coffee
Cross high temperature and bakee on the premise of (highest temperature is the highest up to 240 DEG C) killed all microorganisms, use the non-heating power of low temperature
Process technology, final products require no thermal sterilization, can ensure that final products microorganism is qualified completely.
(3) novelty uses and fills CO2Technology combines low temperature non-heating power process technology
CO2The Oxidation of Fat and Oils in liquid coffee concentrate, nutrient substance oxidizing brown stain, and CO can be prevented with starvation2Existence make
Anoxia in container, many also cannot survive addicted to oxygen bacterium, CO2Having certain pressure in making container, pressure also can make growth of microorganism
Condition is destroyed even dead.And make carbon dioxide gasification owing to temperature increases when drinking, stimulation can be produced and take away Studies of Human Body Heat
Amount, so giving drinking person with refrigerant sense.
In production process of the present invention, all storage buckets for storing coffee extract or liquid coffee concentrate are at cleaning and sterilizing
After be filled with carbon dioxide immediately, keep tank pressure 0.15-0.20MPa, then input coffee extract or liquid coffee concentrate, fill simultaneously
Dress forward direction liquid coffee concentrate is filled with CO2。
The present invention uses the low temperature non-heating power processing skills such as above technical scheme, creative employing adverse current cold extraction, freeze concentration
Art processing liquid coffee concentrate, complete coffee volatile aroma and the effective ingredient of preserving, use simultaneously and fill CO2Technology carrys out starvation
Prevent the Oxidation of Fat and Oils in liquid coffee concentrate, nutrient substance oxidizing brown stain, the growth of suppression microorganism and breeding, even make micro-life
Thing growth conditions destroy and dead, concentrated solution product coffee aroma is strong, mouthfeel alcohol just, local flavor pure.The present invention is non-by low temperature
Heating power process technology and fill CO2Effectively combine, not only ensure the high-quality of liquid coffee concentrate, also efficiently solve liquid coffee concentrate
Stability problem, extend liquid coffee concentrate shelf-life, it is achieved the industrialized production of liquid coffee concentrate.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the production technological process of the present invention.
Detailed description of the invention
The production method of a kind of high-quality liquid coffee concentrate, comprises the following steps:
1) give birth to bean to bakee, grind: carry out bakeing, grinding by raw for coffee bean, be ground to particle diameter 8-40 mesh, obtain coffee particles；
2) the coldest extraction: coffee particles is put in countercurrent extraction equipment and (use Double helix counter-current extraction), add water and carry out adverse current
Cold extraction, described coffee particles is 1:2-5 with the weight ratio of water, extraction temperature 4-25 DEG C, and extraction time 45-90min collects extraction
Liquid；
The coffee grounds obtained after the coldest extraction is discharged from countercurrent extraction equipment, enters back into and carries out High Temperature High Pressure in column extractor
Extraction, is used for producing instant powder；
3 filter centrifugation: the extract of above-mentioned collection is first filtered with 100-300 mesh filter screen, then uses horizontal type screw settling centrifuge
Or disk centrifugal separator is centrifuged, the centrifugal rotational speed ＞ 2000r/min of described horizontal type screw settling centrifuge, described disk centrifugal separator
Centrifugal rotational speed ＞ 6000 r/min,
In the coffee grounds that the coffee grounds that described centrifuge is discharged is discharged after being merged into the cold extraction of adverse current, enter back in column extractor
Row High Temperature High Pressure extracts, and is used for producing instant powder；
4) freeze concentration: by above-mentioned centrifugal after extract be cooled to-1.5 DEG C to-15 DEG C, make in extract a part of water with ice
Brilliant form separates out, and is separated by ice crystal, make extract be concentrated from extract, and described freeze concentration uses segmentation concentration side
Method, first uses progressive laminated crystalline formula freeze concentration to obtain the concentrated solution that concentration is 10-15Brix, then uses suspension crystallization formula cold
Freeze concentration continuing to be concentrated into concentration by concentrated solution is 25-30Brix；
The ice crystal that freeze concentration process produces is re-used as step 2 after melting) the extraction water of the coldest extraction；
5) CO is filled2: use injecting type hybrid technology to be filled with CO in above-mentioned concentrated solution before fill2, CO2Charge is CO2Air-capacitor amount
(20 DEG C) >=2.0 times of volumes；
In the production process of liquid coffee concentrate, all storage buckets for storing extract or concentrated solution after cleaning and sterilizing immediately
It is filled with carbon dioxide, keeps tank pressure 0.15-0.20MPa, then input extract or concentrated solution；
6) fill: fill CO to above-mentioned2Concentrated solution after process carries out sterile filling, obtains liquid coffee concentrate.
7) cold preservation: described liquid coffee concentrate cold preservation is in 0-4 DEG C of environment.
Embodiment 1
The production method of a kind of high-quality liquid coffee concentrate, comprises the following steps:
1) give birth to bean to bakee, grind: select arabica coffees raw bean in Yunnan to carry out bakeing (moderate bakees, L-value 85-95), bakee
After be ground to particle diameter 8-40 mesh, obtain coffee particles；
2) the coldest extraction: coffee particles put in counter current device and (use Double helix counter-current extraction), adding water, it is cold to carry out adverse current
Extraction, described coffee particles is 1:2 with the weight ratio of water, extraction temperature 25 DEG C, and extraction time 45min collects extract；
The coffee grounds obtained after the coldest extraction is discharged from countercurrent extraction equipment, enters back into and carries out High Temperature High Pressure in column extractor
Extraction, is used for producing instant powder；
3) filter centrifugation: the extract of above-mentioned collection is first filtered with 100 mesh filter screens, then is centrifuged with disk centrifugal separator, described dish
Centrifugal rotational speed 8000 r/min of formula centrifuge, the coffee grounds that described butterfly centrifugal machine is discharged is discharged after being merged into the cold extraction of adverse current
In coffee grounds, enter back into and column extractor carries out High Temperature High Pressure extraction, be used for producing instant powder；
4) freeze concentration: by above-mentioned centrifugal after extract be cooled to-1.5 DEG C to-15 DEG C, make in extract a part of water with ice
Brilliant form separates out, and is separated by ice crystal, make extract be concentrated from extract, and described freeze concentration uses segmentation concentration side
Method, first uses progressive laminated crystalline formula freeze concentration to obtain the concentrated solution that concentration is 10Brix, then uses suspension crystallization formula freezing
It is 25Brix that concentrated solution is continued to be concentrated into concentration by concentration；
The ice crystal that freeze concentration process produces is re-used as step 2 after melting) the extraction water of the coldest extraction；
5) CO is filled2: use injecting type hybrid technology to be filled with CO in above-mentioned concentrated solution before fill2, until CO2Air-capacitor amount (20 DEG C)
It is 2.0 times of volumes；
In the production process of liquid coffee concentrate, all storage buckets for storing extract or concentrated solution after cleaning and sterilizing immediately
It is filled with carbon dioxide, keeps tank pressure 0.15-0.20MPa, then input extract or concentrated solution；
6) fill: fill CO to above-mentioned2Concentrated solution after process carries out sterile filling, obtains liquid coffee concentrate；
7) cold preservation: described liquid coffee concentrate cold preservation is in 0-4 DEG C of environment.
The present embodiment produce liquid coffee concentrate coffee aroma is strong, mouthfeel alcohol just, local flavor pure.
Embodiment 2
The production method of a kind of high-quality liquid coffee concentrate, comprises the following steps:
1) give birth to bean to bakee, grind: select the raw bean of Ethiopia's Ye Jiaxuefei coffee to carry out bakeing (moderate baking, L-value 90-
95), it is ground to particle diameter 8-40 mesh after baking, obtains coffee particles；
2) the coldest extraction: coffee particles put in counter current device and (use Double helix counter-current extraction), adding water, it is cold to carry out adverse current
Extraction, described coffee particles is 1:4 with the weight ratio of water, extraction temperature 15 DEG C, and extraction time 75min collects extract；
The coffee grounds obtained after the coldest extraction is discharged from countercurrent extraction equipment, enters back into and carries out High Temperature High Pressure in column extractor
Extraction, is used for producing instant powder；
3 filter centrifugation: by the extract of above-mentioned collection first with 200 mesh filter screens filter, then with horizontal type screw settling centrifuge from
The heart, the centrifugal rotational speed 3000r/min of described horizontal type screw settling centrifuge, the coffee that described horizontal type screw settling centrifuge is discharged
In the coffee grounds that slag is discharged after being merged into the cold extraction of adverse current, enter back into and column extractor carries out High Temperature High Pressure extraction, be used for producing
Instant powder；
4) freeze concentration: by above-mentioned centrifugal after extract be cooled to-1.5 DEG C to-15 DEG C, make in extract a part of water with ice
Brilliant form separates out, and is separated by ice crystal, make extract be concentrated from extract, and described freeze concentration uses segmentation concentration side
Method, first uses progressive laminated crystalline formula freeze concentration to obtain the concentrated solution that concentration is 12Brix, then uses suspension crystallization formula freezing
It is 28Brix that concentrated solution is continued to be concentrated into concentration by concentration；
The ice crystal that freeze concentration process produces is re-used as step 2 after melting) the extraction water of the coldest extraction；
5) CO is filled2: use injecting type hybrid technology to be filled with CO in above-mentioned concentrated solution before fill2, until CO2Air-capacitor amount (20 DEG C)
It is 2.5 times of volumes；
In the production process of described liquid coffee concentrate, all storage buckets for storing extract or concentrated solution are after cleaning and sterilizing
It is filled with carbon dioxide immediately, keeps tank pressure 0.15-0.20MPa, then input extract or concentrated solution；
6) fill: fill CO to above-mentioned2Concentrated solution after process carries out sterile filling, obtains liquid coffee concentrate；
7) cold preservation: described liquid coffee concentrate cold preservation is in 0-4 DEG C of environment.
The present embodiment produce liquid coffee concentrate coffee aroma is strong, mouthfeel alcohol just, local flavor pure.
Embodiment 3
The production method of a kind of high-quality liquid coffee concentrate, comprises the following steps:
1) give birth to bean to bakee, grind: select the raw bean of Mandeling coffee to carry out bakeing (degree of depth bakees, L-value 75-85), grind after baking
To particle diameter 8-40 mesh, obtain coffee particles；
2) the coldest extraction: coffee particles put in counter current device and (use Double helix counter-current extraction), adding water, it is cold to carry out adverse current
Extraction, described coffee particles is 1:5 with the weight ratio of water, extraction temperature 4 DEG C, and extraction time 90min collects extract；
The coffee grounds obtained after the coldest extraction is discharged from countercurrent extraction equipment, enters back into and carries out High Temperature High Pressure in column extractor
Extraction, is used for producing instant powder；
3 filter centrifugation: the extract of above-mentioned collection is first filtered with 300 mesh filter screens, then is centrifuged with disk centrifugal separator, described dish
Centrifugal rotational speed 7000 r/min of formula centrifuge, the coffee grounds that described butterfly centrifugal machine is discharged is discharged after being merged into the cold extraction of adverse current
In coffee grounds, enter back into and column extractor carries out High Temperature High Pressure extraction, be used for producing instant powder；
4) freeze concentration: by above-mentioned centrifugal after extract be cooled to-1.5 DEG C to-15 DEG C, make in extract a part of water with ice
Brilliant form separates out, and is separated by ice crystal, make extract be concentrated from extract, and described freeze concentration uses segmentation concentration side
Method, first uses progressive laminated crystalline formula freeze concentration to obtain the concentrated solution that concentration is 15Brix, then uses suspension crystallization formula freezing
It is 30Brix that concentrated solution is continued to be concentrated into concentration by concentration；
The ice crystal that freeze concentration process produces is re-used as step 2 after melting) the extraction water of the coldest extraction；
5) CO is filled2: use injecting type hybrid technology to be filled with CO in above-mentioned concentrated solution before fill2, until CO2Air-capacitor amount (20 DEG C)
It is 3.0 times of volumes；
In the production process of described liquid coffee concentrate, all storage buckets for storing extract or concentrated solution are after cleaning and sterilizing
It is filled with carbon dioxide immediately, keeps tank pressure 0.15-0.20MPa, then input extract or concentrated solution.
6) fill: fill CO to above-mentioned2Concentrated solution after process carries out sterile filling, obtains liquid coffee concentrate.
7) cold preservation: described liquid coffee concentrate cold preservation is in 0-4 DEG C of environment.
The present embodiment produce liquid coffee concentrate coffee aroma is strong, mouthfeel alcohol just, local flavor pure.
Claims (10)
1. the production method of a high-quality liquid coffee concentrate, it is characterised in that: it comprises the following steps:
1) give birth to bean to bakee, grind: carry out bakeing, grinding by raw for coffee bean, be ground to particle diameter 8-40 mesh, obtain coffee particles；
2) the coldest extraction: coffee particles is put in countercurrent extraction equipment, add water carry out adverse current cold extraction, described coffee particles with
The weight ratio of water is 1:2-5, extraction temperature 4-25 DEG C, extraction time 45-90min, collects extract；
3) filter centrifugation: the extract of above-mentioned collection is filtered, centrifugal；
4) freeze concentration: by above-mentioned centrifugal after extract be cooled to-1.5 DEG C to-15 DEG C, make in extract a part of water with ice
Brilliant form separates out, and is separated by ice crystal, make extract be concentrated to give concentrated solution from extract；
5) CO is filled2: the above-mentioned concentrated solution of fill forward direction is filled with CO2；
6) fill: fill CO to above-mentioned2Concentrated solution after process carries out sterile filling, obtains liquid coffee concentrate.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 2)
The coffee grounds obtained after the coldest extraction is discharged from countercurrent extraction equipment, enters back into and carries out High Temperature High Pressure extraction in column extractor
Take, be used for producing instant powder.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 2)
The coldest extraction uses Double helix counter-current extraction, and coffee particles moves in opposite directions with water.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 3)
Extract first filters with 100-300 mesh filter screen, then is centrifuged with horizontal type screw settling centrifuge or disk centrifugal separator, described horizontal spiral shell
The centrifugal rotational speed ＞ 2000r/min, centrifugal rotational speed ＞ 6000 r/min of described disk centrifugal separator of rotation sedimentation centrifuge.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 4, it is characterised in that: described is centrifugal
In the coffee grounds that the coffee grounds that machine is discharged is discharged after being merged into the cold extraction of adverse current, enter back into and column extractor carries out High Temperature High Pressure extraction
Take, be used for producing instant powder.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 4)
The concentration being concentrated into concentrated solution is 25-30Brix.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 4)
Freeze concentration use segmentation method for concentration, first using progressive laminated crystalline formula freeze concentration to obtain concentration is 10-15Brix's
Concentrated solution, then to use suspension crystallization formula freeze concentration to continue concentrated solution to be concentrated into concentration be 25-30Brix.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 4)
The ice crystal that freeze concentration process produces is re-used as step 2 after melting) the extraction water of the coldest extraction.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described step 5)
CO2For food-class CO2CO is filled used by,2Technology is injecting type hybrid technology, described CO2Charge is: under the conditions of 20 DEG C, CO2Gas
Capacity >=2.0 times volume.
The production method of a kind of high-quality liquid coffee concentrate the most according to claim 1, it is characterised in that: described coffee
In the production process of concentrated solution, all storage buckets for storing extract or concentrated solution are filled with CO after cleaning and sterilizing immediately2,
Keep tank pressure 0.15-0.20MPa, then input extract or concentrated solution.
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| CN108935871A (en) * | 2018-07-18 | 2018-12-07 | 大闽食品（漳州）有限公司 | A method of light coffee is prepared by raw material of coffee bean |
| CN110477172A (en) * | 2019-09-16 | 2019-11-22 | 上海应用技术大学 | A kind of preparation method of fast quickly cooling extraction coffee |
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| WO2019243173A1 (en) * | 2018-06-20 | 2019-12-26 | Koninklijke Douwe Egberts B.V. | Method of beverage extraction and apparatus therefor |
| CN110973320A (en) * | 2019-12-27 | 2020-04-10 | 昆明弘承商贸有限公司 | Efficient freezing and concentrating method suitable for food serous fluid |
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