CN105613846A - Preparation method of coldly extracted tea concentrated liquid and coldly extracted tea concentrated liquid - Google Patents
Preparation method of coldly extracted tea concentrated liquid and coldly extracted tea concentrated liquid Download PDFInfo
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- CN105613846A CN105613846A CN201610038083.2A CN201610038083A CN105613846A CN 105613846 A CN105613846 A CN 105613846A CN 201610038083 A CN201610038083 A CN 201610038083A CN 105613846 A CN105613846 A CN 105613846A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 241001122767 Theaceae Species 0.000 title claims abstract 36
- 238000000605 extraction Methods 0.000 claims abstract description 83
- 230000001954 sterilising effect Effects 0.000 claims abstract description 41
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 29
- 238000010298 pulverizing process Methods 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 14
- 238000005119 centrifugation Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 239000010409 thin film Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- 230000001052 transient effect Effects 0.000 claims description 6
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 235000013616 tea Nutrition 0.000 abstract description 123
- 239000000796 flavoring agent Substances 0.000 abstract description 19
- 235000019634 flavors Nutrition 0.000 abstract description 19
- 235000013361 beverage Nutrition 0.000 abstract description 5
- 235000019658 bitter taste Nutrition 0.000 abstract description 4
- 235000009508 confectionery Nutrition 0.000 abstract description 4
- 235000019640 taste Nutrition 0.000 abstract description 4
- 206010013911 Dysgeusia Diseases 0.000 abstract 1
- 235000020335 flavoured tea Nutrition 0.000 abstract 1
- 235000014347 soups Nutrition 0.000 abstract 1
- 235000019605 sweet taste sensations Nutrition 0.000 abstract 1
- 244000269722 Thea sinensis Species 0.000 description 108
- 239000000243 solution Substances 0.000 description 52
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 238000010790 dilution Methods 0.000 description 10
- 239000012895 dilution Substances 0.000 description 10
- PFTAWBLQPZVEMU-DZGCQCFKSA-N (+)-catechin Chemical compound C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@@H]2O)=CC=C(O)C(O)=C1 PFTAWBLQPZVEMU-DZGCQCFKSA-N 0.000 description 8
- ADRVNXBAWSRFAJ-UHFFFAOYSA-N catechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3ccc(O)c(O)c3 ADRVNXBAWSRFAJ-UHFFFAOYSA-N 0.000 description 8
- 235000005487 catechin Nutrition 0.000 description 8
- 229950001002 cianidanol Drugs 0.000 description 8
- 239000012141 concentrate Substances 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 230000002906 microbiologic effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 235000006468 Thea sinensis Nutrition 0.000 description 6
- 235000009569 green tea Nutrition 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 210000002421 cell wall Anatomy 0.000 description 4
- 244000062793 Sorghum vulgare Species 0.000 description 3
- 235000020279 black tea Nutrition 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000035622 drinking Effects 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 235000019713 millet Nutrition 0.000 description 3
- 235000020333 oolong tea Nutrition 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 235000011194 food seasoning agent Nutrition 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 235000010254 Jasminum officinale Nutrition 0.000 description 1
- 240000005385 Jasminum sambac Species 0.000 description 1
- 235000012098 RTD tea Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/16—Tea extraction; Tea extracts; Treating tea extract; Making instant tea
- A23F3/18—Extraction of water soluble tea constituents
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/16—Tea extraction; Tea extracts; Treating tea extract; Making instant tea
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/16—Tea extraction; Tea extracts; Treating tea extract; Making instant tea
- A23F3/22—Drying or concentrating tea extract
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Tea And Coffee (AREA)
Abstract
The invention provides a preparation method of coldly extracted tea concentrated liquid and the coldly extracted tea concentrated liquid. The preparation method comprises the following steps: (a) carrying out primary crushing treatment on tea raw materials to obtain primary crushed tea materials; (b) carrying out sterilization treatment on the primary crushed tea materials; (c) carrying out ultrafine crushing treatment on the primary crushed tea materials subjected to the sterilization treatment to obtain secondary crushed tea materials; (d) carrying out low-temperature extraction treatment on the secondary crushed tea materials; (e) carrying out solid-liquid separation treatment on an extracted mixture to obtain liquid; and (f) carrying out concentration treatment on the liquid to obtain the coldly extracted tea concentrated liquid. The preparation method provided by the invention has the advantages that after the obtained coldly extracted tea concentrated liquid is diluted, tea soup is clear and transparent, and has a mellow and sweet taste; and blended pure tea and a flavored tea beverage have a typical original tea flavor, a mellow taste, an obvious sweet aftertaste and no bitter taste.
Description
Technical field
The present invention relates to Folium Camelliae sinensis concentrated solution preparing technical field, particularly relate to the preparation method of a kind of cold extraction tea concentrated solution and cold extraction tea concentrated solution.
Background technology
Tea beverage is the product of the modern life, its fast and easily drinking way revolutionize tea drinking habit and the pattern that people follow over the past thousands of years, be very easy to the people that drinks tea, expand the when and where drunk tea.
China is the cradle of tea, has long kind tea, tea making and history of drinking tea, the rarity of accumulation in the Famous High-quality Tea tea development history especially of China. The method of drink that develops into of RTD tea beverage provides new chance, also thinking has been widened in the development of Tea Industry, how to make full use of the Folium Camelliae sinensis gathered summer and autumn, produced the tea beverage of high-quality, become tea industry and tea beverage industry development problem in urgent need to solve. Selecting tradition Famous High-quality Tea is raw material production tea beverage, how to keep the shelf stabilities of local flavor, mouthfeel and beverage all to become a lot of challenges difficult problem. Although Summer-autumn tea Maturity is high, the beverage shelf stabilities of preparation is relatively better, but ester catechin content is high, and bitter taste is heavier, is difficult to develop the tea beverage of high-quality. If the water solublity catechin that can efficiently extract at a lower temperature in Folium Camelliae sinensis, reduce the dissolution of ester catechin simultaneously, just can solve the difficult problem on taste well; Meanwhile, if the Fast Stripping that the taste and flavor material solved in Folium Camelliae sinensis is at low temperatures, just can lower energy consumption and material consumption, make cold extraction tea be possibly realized for industrialized production.
Cold extraction tea enjoys liking of consumer owing to having the refreshing sweet mouthfeel of alcohol. Folium Camelliae sinensis prepared by traditional handicraft is placed in frozen water the short time and soaks, and the solid content in millet paste is non-normally low, and color is also very shallow, and flavour is very light. Traditional way is to be placed in cold water by Folium Camelliae sinensis, puts in refrigerator and stands more than 8 hours. Although such way can obtain good mouthfeel, but wastes time and energy, and there is the risk that microorganism is polluted. For adapting to consumer's consumption demand to cold brew tea, the processing technique of Folium Camelliae sinensis is improved, knead degree by increase and destroy Folium Camelliae sinensis cell wall more, make tea be easier to dissolution in water. Also have technology of preparing to destroy the cell wall of fresh tea leaf by extending the steam beating time, make the water soluble ingredient in Folium Camelliae sinensis, when soaking in cold water, be easier to dissolution; Also have technology of preparing tea fresh leaves is carried out freezing, Cell sap under freezing conditions forms ice crystal to destroy cell wall, the green tea made can in cold water Fast Stripping; Also having technology of preparing microwave expansion method, adopt high power surface density microwave heating, promote the moisture vaporization of Folium Camelliae sinensis cell, burst cell wall, promotes effective content of tea dissolution. The way of above cold brew tea leaf improves Folium Camelliae sinensis dissolution rate in cold water to a certain extent, but the prolongation steam beating time can destroy fragrance and the local flavor of former tea, makes the quality of tea reduce; Increasing and knead degree and microwave expansion, can promote tea dissolution rate in cold water to a certain extent, but be exposed to by the effective ingredient in Folium Camelliae sinensis, can accelerate the deterioration of tea quality, the packaging for Folium Camelliae sinensis also has higher requirement. Fresh leaf freezing method fabrication cycle is longer, and equipment requirements is high, and energy consumption is very high, is not suitable for large-scale production.
Summary of the invention
The technical problem to be solved is, the preparation method of a kind of cold extraction tea concentrated solution and cold extraction tea concentrated solution are provided, after the cold extraction tea concentrated solution dilution of its acquisition, millet paste is as clear as crystal, the refreshing sweetness of mouthfeel alcohol, pure tea and the seasoning tea beverage of allotment have typical former tea local flavor, flavour is mellow, return sweet substantially, several without bitter taste.
In order to solve the problems referred to above, the preparation method that the invention provides a kind of cold extraction tea concentrated solution, comprise the steps: a) tea raw material to be carried out preliminary pulverization process, once pulverized tea material; B) described tea material of once pulverizing is carried out sterilization processing; C) carry out micronizing process by once pulverizing tea material described in after sterilization processing, obtain separating twice tea material; D) described separating twice tea material is carried out low-temperature extraction process; E) mixture after extraction is carried out solid-liquid separation process, obtain liquid; F) described liquid is carried out concentration, obtain cold extraction tea concentrated solution.
Further, in step b), described sterilization processing adopts microwave disinfection or TRANSIENT HIGH TEMPERATURE wet sterilization.
Further, the time of described microwave disinfection is 60 seconds��300 seconds; The sterilizing time of described TRANSIENT HIGH TEMPERATURE wet sterilization is 1 second��30 seconds, and vapor (steam) temperature is 150 degrees Celsius��300 degrees Celsius.
Further, in step c), after described micronizing processes, the particle diameter of described separating twice tea material is less than 40 orders.
Further, in step d), the step that described low-temperature extraction processes is: adopts the water of 4 degrees Celsius��40 degrees Celsius that described separating twice tea material carries out extraction and processes 10 minutes��60 minutes.
Further, in step e), described solid-liquid separation processes one or both combinations that can adopt in centrifugation or membrance separation.
Further, in step f), described concentration adopts the mode that membrance concentration and vacuum rotating thin film concentration combine to carry out.
Further, this preparation method institute in steps in, the temperature of all intermediums is lower than 45 degrees Celsius.
Further, the content of the soluble solid of the cold extraction tea concentrated solution obtained in step f) is 15%��70%.
The present invention also provides for a kind of cold extraction tea concentrated solution, adopts above-mentioned preparation method to prepare.
It is an advantage of the current invention that after the stem tea that tradition tea-manufacturing technology makes is done certain process, make the water soluble ingredient in Folium Camelliae sinensis be able to efficient dissolution at low temperatures, extract yield suitable with when high-temperature extraction, clarified separation and concentration simultaneously carries out all at a lower temperature, the sweetness making cold extraction tea is clearly able to complete reservation, utilize membrance concentration in conjunction with CT concentration technology, concentrated solution is less than 45 DEG C when, solid content reaches 15%��70%, solve the transport in industrialized production and storage problem well, and tea raw material used is sterilized by the present invention before broken, solve the microorganism pollution risk in low-temperature extraction and concentration process, after the cold extraction tea concentrated solution dilution obtained, millet paste is as clear as crystal, the refreshing sweetness of mouthfeel alcohol, pure tea and the seasoning tea beverage of allotment have typical former tea local flavor, flavour is mellow, return sweet substantially, several without bitter taste, the present invention utilizes Summer-autumn tea exploitation high grade tea beverage to provide new thinking and solution.
Detailed description of the invention
Below the preparation method of cold extraction tea concentrated solution provided by the invention and the detailed description of the invention of cold extraction tea concentrated solution are elaborated.
The preparation method of a kind of cold extraction tea concentrated solution of the present invention, comprises the steps:
A) tea raw material is carried out preliminary pulverization process, once pulverized tea material. Described tea raw material selects China and the commodity green tea of various grades all over the world, oolong tea, black tea, Ramulus et Folium Mussaendae Pubescentis and scented tea etc., it is desirable to tea raw material has the typical characteristic of selected tea. The once pulverizing tea material particle diameter obtained after described preliminary pulverizing is 10��20 orders.
B) described tea material of once pulverizing is carried out sterilization processing. Described sterilization processing adopts microwave disinfection or TRANSIENT HIGH TEMPERATURE wet sterilization. The time of described microwave disinfection is 60 seconds��300 seconds, for instance 60 seconds, 70 seconds, 80 seconds, 90 seconds, 100 seconds, 110 seconds, 120 seconds, 130 seconds, 140 seconds, 150 seconds, 160 seconds, 170 seconds, 180 seconds, 190 seconds, 200 seconds, 210 seconds, 220 seconds, 230 seconds, 240 seconds, 250 seconds, 260 seconds, 270 seconds, 280 seconds, 290 seconds, 300 seconds; The sterilizing time of described TRANSIENT HIGH TEMPERATURE wet sterilization is 1 second��30 seconds, such as 1 second, 5 seconds, 10 seconds, 15 seconds, 20 seconds, 25 seconds, 30 seconds, vapor (steam) temperature is 150 degrees Celsius��300 degrees Celsius, for instance 150 degrees Celsius, 160 degrees Celsius, 170 degrees Celsius, 180 degrees Celsius, 190 degrees Celsius, 200 degrees Celsius, 210 degrees Celsius, 220 degrees Celsius, 230 degrees Celsius, 240 degrees Celsius, 250 degrees Celsius, 260 degrees Celsius, 270 degrees Celsius, 280 degrees Celsius, 290 degrees Celsius, 300 degrees Celsius.
C) carry out micronizing process by once pulverizing tea material described in after sterilization processing, obtain separating twice tea material. After described micronizing processes, the particle diameter of described separating twice tea material is less than 40 orders. Those skilled in the art can obtain the method that micronizing processes from prior art.
D) described separating twice tea material is carried out low-temperature extraction process, in described low-temperature extraction processes, the mass ratio of separating twice tea material and water is 1:15��50, such as 1:15, 1:16, 1:17, 1:18, 1:19, 1:20, 1:21, 1:22, 1:23, 1:24, 1:25, 1:26, 1:27, 1:28, 1:29, 1:30, 1:31, 1:32, 1:33, 1:34, 1:35, 1:36, 1:37, 1:38, 1:39, 1:40, 1:41, 1:42, 1:43, 1:44, 1:45, 1:46, 1:47, 1:48, 1:49, 1:50. . in this embodiment, separating twice tea material is extracted 10 minutes��60 minutes by the water adopting 4 degrees Celsius��40 degrees Celsius, the temperature of described water is such as 4 degrees Celsius, 8 degrees Celsius, 12 degrees Celsius, 16 degrees Celsius, 20 degrees Celsius, 24 degrees Celsius, 28 degrees Celsius, 32 degrees Celsius, 36 degrees Celsius, 40 degrees Celsius, described extraction time such as 10 minutes, 15 minutes, 20 minutes, 25 minutes, 30 minutes, 35 minutes, 40 minutes, 45 minutes, 50 minutes, 55 minutes, 60 minutes etc., described water can adopt softening water.
E) mixture after extraction is carried out solid-liquid separation process, obtain liquid. Described solid-liquid separation processes one or both combinations that can adopt in centrifugation or membrance separation. For example, it is possible to only with centrifugation, or only with membrance separation, or adopt membrance separation again after employing centrifugation.
F) described liquid is carried out concentration, obtain cold extraction tea concentrated solution. Described concentration adopts the mode that membrance concentration and vacuum rotating thin film (CT) concentration combine to carry out. After carrying out concentration, the content of the soluble solid (comprising catechin, aminoacid etc.) of the cold extraction tea concentrated solution obtained is 15%��70%.
Preferably, this preparation method institute in steps in, the temperature of all intermediums (such as feed liquid), lower than 45 degrees Celsius, to avoid high temperature that the local flavor of concentrated solution is produced harmful effect, reduces the loss of fragrance and heat-sensitive substance in tea.
The method of the present invention starts just to solve microorganism problem from raw material, utilizes twice crushing technology to solve the problem that tea dissolution rate in cold water and normal-temperature water is low and extraction efficiency is low simultaneously, makes cold extraction tea industrialized production beverage be possibly realized. In conjunction with advanced clarified separation technology, cryogenic film concentration and low temperature CT concentration technique, while both preserving the refreshing taste and flavor of cold extraction tea alcohol, reduce again storage and cost of transportation.
The present invention also provides for a kind of cold extraction tea concentrated solution, and it adopts above-mentioned preparation method to prepare, and the content of its soluble solid is 15%��70%.
The several embodiments of of the present invention preparation method are set forth below, so that the technical scheme of of the present invention preparation method is explained further.
Embodiment 1
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) commodity green tea 20 kilograms is accurately weighed;
(2) after preliminary pulverizing, adopting high-temperature steam instantaneous sterilization, sterilization parameter is as follows: vapor (steam) temperature is 300 DEG C, and sterilizing time is 3s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 400 kilograms, softens coolant-temperature gage 4 DEG C, extraction time 60min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 50%.
The green tea concentrated liquid obtained is clarified bright after dilution, flavour alcohol and fresh refreshing, and water solublity catechin content accounts for more than the 90% of total catechin content. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 2:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) light fermentation commodity oolong 20 kilograms is accurately weighed;
(2) after preliminary pulverizing, adopting high-temperature steam instantaneous sterilization, sterilization parameter is as follows: vapor (steam) temperature is 150 DEG C, and sterilizing time is 30s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 400 kilograms, softens coolant-temperature gage 10 DEG C, extraction time 40min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 70%.
The oolong tea concentrated solution obtained is clarified bright after dilution, flavour alcohol and fresh refreshing. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 3:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) 20 kilograms of commodity souchong leaf is accurately weighed;
(2) after preliminary pulverizing, adopting high-temperature steam instantaneous sterilization, sterilization parameter is as follows: vapor (steam) temperature is 200 DEG C, and sterilizing time is 15s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 500 kilograms, softens coolant-temperature gage 20 DEG C, extraction time 30min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 60%.
The black tea concentrated solution obtained is clarified bright after dilution, flavour alcohol and fresh refreshing. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 4:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) commercial white Folium Camelliae sinensis 20 kilograms is accurately weighed;
(2) after preliminary pulverizing, adopting high-temperature steam instantaneous sterilization, sterilization parameter is as follows: vapor (steam) temperature is 250 DEG C, and sterilizing time is 8s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 400 kilograms, softens coolant-temperature gage 25 DEG C, extraction time 45min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 55%.
The Ramulus et Folium Mussaendae Pubescentis concentrated solution obtained is clarified bright after dilution, flavour alcohol and fresh refreshing. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 5:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) commodity Flos Jasmini Sambac Folium Camelliae sinensis 20 kilograms is accurately weighed;
(2) after preliminary pulverizing, adopting high-temperature steam instantaneous sterilization, sterilization parameter is as follows: vapor (steam) temperature is 220 DEG C, and sterilizing time is 10s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 400 kilograms, softens coolant-temperature gage 30 DEG C, extraction time 45min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 60%.
The jasmine tea concentrated solution obtained is clarified bright after dilution, flavour alcohol and fresh refreshing. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 6:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) commodity green tea 20 kilograms is accurately weighed;
(2) after preliminary pulverizing, adopting microwave disinfection, sterilization parameter is as follows: sterilizing time is 300s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 400 kilograms, softens coolant-temperature gage 4 DEG C, extraction time 60min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 50%.
The green tea concentrated liquid obtained is clarified bright after dilution, flavour alcohol and fresh refreshing, and water solublity catechin content accounts for more than the 90% of total catechin content. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 7:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) light fermentation commodity oolong 20 kilograms is accurately weighed;
(2) after preliminary pulverizing, adopting microwave disinfection, sterilization parameter is as follows: sterilizing time is 150s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 400 kilograms, softens coolant-temperature gage 15 DEG C, extraction time 35min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 70%.
The oolong tea concentrated solution obtained is clarified bright after dilution, flavour alcohol and fresh refreshing. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
Embodiment 8:
The preparation method of the cold extraction tea concentrated solution of the present embodiment, comprises the following steps:
(1) 20 kilograms of commodity souchong leaf is accurately weighed;
(2) after preliminary pulverizing, adopting microwave disinfection, sterilization parameter is as follows: sterilizing time is 100s;
(3) then through (raw material particle size is below 40 orders) after micronizing, adopting softening water low-temperature extraction, extraction parameters is as follows: amount of water 500 kilograms, softens coolant-temperature gage 20 DEG C, extraction time 30min;
(4) finally combining concentrate with membrance separation, membrance concentration and vacuum rotating thin film (CT) concentration technique by centrifugation, the tea concentrated solution soluble solid content obtained is about 60%.
The black tea concentrated solution obtained is clarified bright after dilution, flavour alcohol and fresh refreshing. After testing, physics and chemistry, microbiological indicator also all meet industrial tea concentrated solution standard.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. the preparation method of a cold extraction tea concentrated solution, it is characterised in that comprise the steps:
A) tea raw material is carried out preliminary pulverization process, once pulverized tea material;
B) described tea material of once pulverizing is carried out sterilization processing;
C) carry out micronizing process by once pulverizing tea material described in after sterilization processing, obtain separating twice tea material;
D) described separating twice tea material is carried out low-temperature extraction process;
E) mixture after extraction is carried out solid-liquid separation process, obtain liquid;
F) described liquid is carried out concentration, obtain cold extraction tea concentrated solution.
2. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterised in that in step b), described sterilization processing adopts microwave disinfection or TRANSIENT HIGH TEMPERATURE wet sterilization.
3. the preparation method of cold extraction tea concentrated solution according to claim 2, it is characterised in that the time of described microwave disinfection is 60 seconds��300 seconds; The sterilizing time of described TRANSIENT HIGH TEMPERATURE wet sterilization is 1 second��30 seconds, and vapor (steam) temperature is 150 degrees Celsius��300 degrees Celsius.
4. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterised in that in step c), after described micronizing processes, the particle diameter of described separating twice tea material is less than 40 orders.
5. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterized in that, in step d), the step that described low-temperature extraction processes is: adopting the water of 4 degrees Celsius��40 degrees Celsius that described separating twice tea material carries out extraction and process 10 minutes��60 minutes, the mass ratio of described separating twice tea material and water is 1:15��50.
6. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterised in that in step e), described solid-liquid separation processes one or both combinations that can adopt in centrifugation or membrance separation.
7. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterised in that in step f), described concentration adopts the mode that membrance concentration and vacuum rotating thin film concentration combine to carry out.
8. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterised in that this preparation method institute in steps in, the temperature of all intermediums is lower than 45 degrees Celsius.
9. the preparation method of cold extraction tea concentrated solution according to claim 1, it is characterised in that the content of the soluble solid of the cold extraction tea concentrated solution obtained in step f) is 15%��70%.
10. a cold extraction tea concentrated solution, it is characterised in that adopt the preparation method described in claim 1��9 any one to prepare.
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| CN112841363A (en) * | 2021-01-28 | 2021-05-28 | 程栋 | Preparation method of herbal lotus tea |
| CN116076599A (en) * | 2023-03-13 | 2023-05-09 | 北京协同创新食品科技有限公司 | Tea extraction method and system |
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