CN101385493B - Concentrated tea juice and processing method thereof - Google Patents
Concentrated tea juice and processing method thereof Download PDFInfo
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- CN101385493B CN101385493B CN2008102168618A CN200810216861A CN101385493B CN 101385493 B CN101385493 B CN 101385493B CN 2008102168618 A CN2008102168618 A CN 2008102168618A CN 200810216861 A CN200810216861 A CN 200810216861A CN 101385493 B CN101385493 B CN 101385493B
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Abstract
The invention provides a concentrating tea liquor and a processing method thereof; wherein, after tea leaves are crashed, water is taken as extraction medium and mixed with the tea leaves; after tea pulp is produced, perfume is recycled and processed; after being filtered, the extracted tea-liquor substrate is squeezed and separated, and primary filter, centrifugation, reverse osmosis concentration, perfume raw material backfill and sterilization are carried out. During the concentration process, the method adopts the perfume-recycling technique and the perfume raw material backfill process, the perfume volatilized from the tea liquor can be completely recycled, and some poor perfume ingredients can also be removed; furthermore, the method can not only obtain extracting solution with high concentration (above 10%) but also save energy consumption and reduce the loss of perfume ingredient in the course of processing, which effectively maintains the faint scent of the tea leaves and further improves the quality of products.
Description
Technical field
The present invention relates to food processing field, relating in particular to a kind of is the concentrated tea juice and the processing method of production feedstock production with tealeaves.
Background technology
At present, traditional concentration tea juice mainly is to adopt the various fresh tea passes of water extraction to extract utility wherein, and through coarse filtration, concentrated, ultrafiltration technology acquisition, concentrated tea juice and drinking water dash to convert and drink then; Or, tealeaves is placed 60 ℃ of water temperature lixiviates, use microwave lixiviate under 30～80 ℃ of conditions to go out the active ingredient in the tealeaves then, also can under vacuum, use the microwave lixiviate, make concentrated tea juice; Perhaps tealeaves is soaked down at 80～90 ℃, then the tea extract that obtains is cooled to room temperature immediately, after coarse filtration, smart filter, adopt film to concentrate or evaporation and concentration to the solid content that is higher than 20%.Yet in the above-mentioned technology, it is lower that tealeaves extracts the extract concentration that the back obtained, and in the concentration process, will quicken the oxidation of effective ingredient Tea Polyphenols, and the fragrance ingredient loss is big, and it is totally light partially to brew back tea sense, embodies the style of not tea delivery.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of concentrated tea juice and processing method, is intended to solve process tea effective ingredient and the big defective of fragrance loss in the prior art.
The embodiment of the invention is achieved in that a kind of concentrated tea juice processing method, is made up of following step:
The preparation of tea slurry: tealeaves is dropped into hopper, after entering tea slurry in-tank mixing stirs after grater is pulverized, is to extract medium with water, is mixed and made into the tea slurry with tealeaves;
Fragrance reclaims: adopt the fragrance retracting device; Top from splitter after the tea slurry heats up through tube heater gets into; Steam gets into from the bottom of splitter, forms reverse the contact with the tea slurry, extracts fragrance out through vavuum pump then; After contact, steam and tea slurry moment takes away its fragrance ingredient, again the perfume material of collection liquid after supercooling; The extraction water flow velocity of said fragrance retracting device is 2500-10000L/hr, and feeding temperature is 50-100 ℃, and removal efficiency is 1.5-3.0%;
Separate: tea is starched substrate push after filtering tea is separated;
Filter just: adopt belt filter to filter its screen pack aperture 80-200 order;
Centrifugation: adopt disk centrifugal separator that tea juice is further separated, the tea temperature during separation is 10-25 ℃, and centrifugal speed is 7000-9000r/min, and charging rate is 3000-6000L/hr;
Reverse osmosis concentration: adopt reverse osmosis equipment to separate concentrated to tea juice;
Perfume material backfill: will be in the tea juice that concentrates through liquid backfill that fragrance recycling is collected;
Sterilization processing.
The present invention also provides a kind of concentrated tea juice by above-mentioned processing method preparation.
The present invention compared with prior art has the following advantages:
1, adopt fragrance to reclaim technology and perfume material backfill processing in the concentration process of the present invention; Fragrance in the time of can reclaiming the volatilization of tea slurry fully also can be removed some bad fragrance ingredients, both can obtain the extract of high concentration (more than 10%); Again can energy efficient and the loss that reduces fragrance ingredient in the process; Maintenance effectively the delicate fragrance that had of of tealeaves itself, tea flavour is strong, has further improved product quality;
2, the present invention reclaims in the technology also and can obtain the fragrance of different flavor characteristic in the same raw material through accurate control removal efficiency, different system temperature and other parameter at fragrance, can obtain the product of different tastes, different levels, has improved tea juice quality.
The present invention is particularly suitable for the application in the pure tea beverages.
Description of drawings
Fig. 1 is a fragrance retracting device sketch map of the present invention.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The invention provides a kind of processing method of concentrated tea juice, it is after tealeaves is pulverized, and is to extract medium with water, is mixed and made into the laggard gas recycling of holding or participate in a prayer service at a temple of tea slurry with tealeaves; Tea slurry substrate after will extracting then pushes separation after filtering, carries out filter just, centrifugation, reverse osmosis concentration, perfume material backfill and sterilization processing again, can accomplish the preparation of concentrated tea juice.
The quality of tea leaf quality directly influences the quality of tea beverage, and in the technology of the present invention, described tealeaves can be selected steaming green tea, roasted green tea, jasmine tea, Iron Guanyin, narcissus, black tea or Pu'er tea for use.
Said tea slurry preparation process is that tealeaves is dropped in the hopper, and Quantitative dosing is pulverized through grater then; Simultaneously with granularity control below 20 orders; Fetch water in blanking limit, limit, mixing and stirring in the tea blending tank, and wherein the tealeaves rate of feeding is 250-500kg/hr.
Said fragrance recycling step is that the tealeaves fragrance that the evaporation back produced of heating is reclaimed; Avoid the volatilization loss of fragrance in the tea extraction process and destruction to aromatic substance; Guarantee the fragrance original flavor in the tealeaves effectively, prevent nutrient loss.This step adopts fragrance retracting device (being called for short ARS), and is as shown in Figure 1, the dosed through feed pump 2 behind tea blending tank 1 preparation tea slurry; The tea slurry is got in the splitter 5 through tube heater 3,4 intensification backs, and material gets into from the top of splitter 5, and steam gets into from the bottom of splitter 5; The inside of said splitter 5 can be provided with 34 bullets 6, and wherein 17 is the fixed cone body, and other 17 are fixed on the central shaft 7; Be the rotary conic body, through the centrifugal force that rotation is produced, first fixed cone body flows into first rotary conic body from the top can to make the tea slurry; Under centrifugal action, the tea slurry flows into second fixed cone body again, and the rest may be inferred; The tea slurry forms the thin layer that thickness has only 3mm from top to bottom.Simultaneously, steam feeds from splitter 5 bottoms, forms reverse the contact with the tea slurry; Under vacuum condition; Steam and tea slurry moment contact can take away its fragrance ingredient, and this is a kind of uniqueness, effective liquid-vapour contact stud mode, it than present known all types of distillation, to remove post all good.Contain the fragrant steam of strong tea and after supercooling, collect the perfume material of liquid, stored under refrigeration is for use.
In the above-mentioned fragrance recycling step, the extraction water flow velocity of said fragrance retracting device is 2500-10000L/hr, and feeding temperature is 50-100 ℃, and removal efficiency is 1.5-3.0%.
After the fragrance extraction, remaining tea slurry substrate, extruding makes the tea separation through filter press, just filters through belt filter then, and its screen pack aperture is 80～200 orders.
Tea juice after filtering is cooled to room temperature, adopts disk centrifugal separator with the centrifugation of tea juice then, the tea temperature is 10-25 ℃, and centrifugal speed is 7000-9000r/min, and charging rate is 3000-6000L/hr.
After separating step was accomplished, it was concentrated to adopt reverse osmosis equipment that tea juice is separated, and can select the RO reverse osmosis equipment for use.
Described perfume material backfill step be with the refrigerating liquid backfill of collecting through fragrance recycling in the tea juice that concentrates, add to again in the tea juice after can the aroma substance after discharging being reclaimed, to increase tea juice fragrance concentration, improve tea juice quality.
The present invention adopts ultra high temperature short time sterilization (UHT) system; Sterilization temperature may be up to 145 ℃, and sterilizing time was 2～5 seconds, both effective kill bacteria; Can avoid sterilization time oversize and tea juice that cause includes composition considerable damage and fragrance loss again, avoid damaging original local flavor in the tea juice.
After sterilization finishes, adopt sterile filling, finally obtain high-quality inspissated juice.
Embodiment 1:
1) gets 600kg steaming green tea raw material; Input feeds intake in the groove; Send into the fragrance retracting device, system's setting after pulverizing through grater: rate of feeding is set to 300kg/hr, the speed of fetching water and is set to 4000L/hr, feeding temperature and is arranged on 50 ℃, removal efficiency and is arranged on 1.5%.Through operation automatically in 2 hours, can obtain the liquid perfume material that 120kg concentrates, refrigeration is temporary then;
2) tea is starched through filter press and is pushed the tea that obtains 6500L, concentration 2.2% after tea separation, 200 orders are just filtered;
3) after being cooled to 20-25 ℃, tea gets into that disk centrifugal separator separates, feed rate is controlled at 5500-6000L/hr;
4) tea of clear carries out reverse osmosis concentration after centrifugal, obtains concentrate 600kg, and concentration is 20.0%;
5) 120kg liquid perfume material is backfilling in the concentrate, mixing and stirring obtains concentrate 720kg, concentration 16.5%;
6) with inspissated juice through 137-142 ℃/20s ultra high temperature short time sterilization, carry out sterile filling after being cooled to 25-30 ℃, finally obtain the concentrated tea juice of 15.0% concentration.
Embodiment 2:
1) gets 600kg jasmine tea raw material; Input feeds intake in the groove; Through sending into the fragrance retracting device after the grater pulverizing; System is provided with: rate of feeding is set to 200kg/hr, the speed of fetching water and is set to 3000L/hr, feeding temperature and is arranged on 75 ℃, removal efficiency and is arranged on 3.0%, and through operation automatically in 3 hours, it was temporary to obtain liquid perfume material, refrigeration that 270kg concentrates;
2) tea is starched the tea that obtains 7500L, concentration 2.5% after the extruding of process filter press is just filtered tea separation, 120 orders;
3) after being cooled to 15-20 ℃, tea gets into that disk centrifugal separator separates, feed rate is controlled at 4500-5000L/hr;
4) tea with centrifugal back clear carries out reverse osmosis concentration, obtains concentrate 850kg, concentration 20.0%;
5) 270kg liquid perfume material is backfilling in the concentrate, mixing and stirring obtains concentrate 1120kg, concentration 15.2%;
6) with inspissated juice through 137-142 ℃/20s ultra high temperature short time sterilization, carry out sterile filling after being cooled to 25-30 ℃, finally obtain the concentrated tea juice of 13.5% concentration.
Embodiment 3:
1) gets 600kg black tea raw material; Input feeds intake in the groove; Through sending into the fragrance retracting device after the grater pulverizing; System is provided with: rate of feeding is set to 250kg/hr, the speed of fetching water and is set to 3000L/hr, feeding temperature and is arranged on 95 ℃, removal efficiency and is arranged on 2.0%, and through operation automatically in 2.4 hours, it was temporary to obtain liquid perfume material, refrigeration that 140kg concentrates;
2) tea is starched through filter press and is pushed the tea that obtains 6000L, concentration 2.5% after tea separation, 80 orders are just filtered;
3) after being cooled to 10-15 ℃, tea gets into that disk centrifugal separator separates, feed rate is controlled at 3000-3500L/hr;
4) tea with centrifugal back clear carry out reverse osmosis concentration, obtain concentrate 900kg, concentration 15.0%;
5) 140kg liquid perfume material is backfilling in the inspissated juice, mixing and stirring obtains concentrate 1040kg, concentration 13.0%;
6) with inspissated juice through 137-142 ℃/20s ultra high temperature short time sterilization, carry out sterile filling after being cooled to 30-35 ℃, finally obtain the concentrated tea juice of 11.5% concentration.
The above is merely three preferred embodiments of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the processing method of a concentrated tea juice is characterized in that being made up of following step:
The preparation of tea slurry: tealeaves is dropped into hopper, after entering tea slurry in-tank mixing stirs after grater is pulverized, is to extract medium with water, is mixed and made into the tea slurry with tealeaves;
Fragrance reclaims: adopt the fragrance retracting device; Top from splitter after the tea slurry heats up through tube heater gets into; Steam gets into from the bottom of splitter, forms reverse the contact with the tea slurry, extracts fragrance out through vavuum pump then; After contact, steam and tea slurry moment takes away its fragrance ingredient, again the perfume material of collection liquid after supercooling; The extraction water flow velocity of said fragrance retracting device is 2500-10000L/hr, and feeding temperature is 50-100 ℃, and removal efficiency is 1.5-3.0%;
Separate: tea is starched substrate push after filtering tea is separated;
Filter just: adopt belt filter to filter its screen pack aperture 80-200 order;
Centrifugation: adopt disk centrifugal separator that tea juice is further separated, the tea temperature during separation is 10-25 ℃, and centrifugal speed is 7000-9000r/min, and charging rate is 3000-6000L/hr;
Reverse osmosis concentration: adopt reverse osmosis equipment to separate concentrated to tea juice;
Perfume material backfill: will be in the tea juice that concentrates through liquid backfill that fragrance recycling is collected;
Sterilization processing.
2. the processing method of a kind of concentrated tea juice as claimed in claim 1 is characterized in that, the tealeaves rate of feeding is 250-500kg/hr in the said tea slurry preparation process, and the tealeaves granularity after grater is pulverized is below 20 orders.
3. the processing method of a kind of concentrated tea juice as claimed in claim 1, it is characterized in that: described tealeaves is steaming green tea, roasted green tea, jasmine tea, Iron Guanyin, narcissus, black tea or Pu'er tea.
4. concentrated tea juice like each said processing method preparation of claim 1～3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102907736A (en) * | 2012-10-31 | 2013-02-06 | 深圳市深宝华城科技有限公司 | Processing method for red date concentrated juice |
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| CN102342342B (en) * | 2011-07-01 | 2013-03-20 | 广东正源华茶生物工程有限公司 | Method for preparing instant tea through quantificationally matching |
| CN103125640B (en) * | 2011-12-02 | 2016-08-17 | 云南天士力帝泊洱生物茶集团有限公司 | A kind of high-quality slender joss stick mobility instant tea paste and preparation method thereof |
| CN107811086A (en) * | 2017-11-26 | 2018-03-20 | 亳州市芳香苑保健品有限公司 | A kind of jasmine tea processing technology |
| CN108752394A (en) * | 2018-07-25 | 2018-11-06 | 湖北中鑫生物科技有限公司 | Tea polyphenols process for purification is refined using UF membrane |
| CN109566802B (en) * | 2018-12-03 | 2022-05-17 | 陕西汇源健康食品有限公司 | Production process and production line of beverage capable of improving cardiovascular disease |
| CN110037143A (en) * | 2019-04-29 | 2019-07-23 | 鲜活果汁有限公司 | The preparation method of colourless tea-drinking |
| CN113144670B (en) * | 2021-04-30 | 2022-02-22 | 广东顺大食品调料有限公司 | Efficient extraction and concentration production equipment for tea concentrated solution and production method thereof |
| CN114568563A (en) * | 2022-02-22 | 2022-06-03 | 山西振东五和医养堂股份有限公司 | Instant tea rich in aroma components and preparation method thereof |
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|---|---|---|---|---|
| CN1318310A (en) * | 2001-05-30 | 2001-10-24 | 广东华城食品有限公司 | Concentrated tea juice with original flavor maintained and its production process |
| JP2007167005A (en) * | 2005-12-22 | 2007-07-05 | Ogawa & Co Ltd | Method for producing tea extract |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318310A (en) * | 2001-05-30 | 2001-10-24 | 广东华城食品有限公司 | Concentrated tea juice with original flavor maintained and its production process |
| JP2007167005A (en) * | 2005-12-22 | 2007-07-05 | Ogawa & Co Ltd | Method for producing tea extract |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102907736A (en) * | 2012-10-31 | 2013-02-06 | 深圳市深宝华城科技有限公司 | Processing method for red date concentrated juice |
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Owner name: SHENZHEN SHENBAO HUACHENG SCIENCE + TECHNOLOGY CO. Free format text: FORMER NAME: SHENZHEN SHENBAO HUACHENG FOODS CO., LTD. |
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Address after: 518000 No. 22 Jin Yuan Road, Shenzhen village, Henggang Town, Longgang District, Guangdong, China Patentee after: Shenzhen Shenbao Huacheng Science & Technology Co., Ltd. Address before: 518115 Jin Yuan Industrial Zone, Henggang Town, Longgang District, Shenzhen, Guangdong Patentee before: Shenzhen Shenbao Huacheng Foods Co., Ltd. |