CN101518290A - Settled tea drinks and preparation method thereof - Google Patents
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- CN101518290A CN101518290A CN200810007610A CN200810007610A CN101518290A CN 101518290 A CN101518290 A CN 101518290A CN 200810007610 A CN200810007610 A CN 200810007610A CN 200810007610 A CN200810007610 A CN 200810007610A CN 101518290 A CN101518290 A CN 101518290A
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Abstract
The invention relates to a settled tea drink and a preparation method thereof. The method comprises the following steps of: a) generating a tea extracted solution containing tea insoluble substance; b) adding at least one type of acid applicable to foods into the tea extracted solution; c) adding at least one type of salt into the tea extracted solution; d) standing the tea solution under stirring of the lowest limitation to generate precipitation; and e) settling the tea extracted solution to obtain the settled tea extracted solution.
Description
Technical field
This invention relates generally to beverage.More particularly, the present invention relates to contain the tea extract of the beverage of tea extract of clarification and this clarification of preparation to reduce the described beverage method of long-time duration of storage muddiness at ambient temperature.
Background technology
Extract the material that the tea extract that obtains contains the compound that is considered to tea tannin and caffeine usually from tea, some of them are only dissolved in hot water.For example, the tea tannin may contain the compound of polyphenol compound and polyphenol compound and other compound.Sometimes these are insoluble in cold water in the art material is called " tea breast ".Therefore, the beverage that contains the tea extract of conventional method preparation usually can be along with beverage temperature be reduced to room temperature or lower temperature, the muddiness because the precipitation of these tea insoluble substances becomes.Concerning the consumer, the outward appearance of muddy beverage and taste are normally unacceptable.
A kind of method that solves the muddy problem of above-mentioned change is by reducing the temperature of tea extract, insoluble substance being precipitated out.United States Patent (USP) the 4th, 797,293 have described the method for the concentrated tea extract of a kind of preparation as follows: pH is reduced between 2.9 to 3.5, extract is cooled between-1.1 ℃ to 7.2 ℃, and extract is clarified to remove precipitation.Yet this method need be cooled to tea extract the temperature that significantly is lower than room temperature, and this may increase the cost of energy of production, and may incorporate other equipment in existing production line into.Therefore, still there are demand in organ sensation character that does not significantly change tea extract and the method that can be incorporated into the tea extract of the production clarification in the current product line easily.
Summary of the invention
Summary of the invention
In order to reduce the muddiness of tea extract, the embodiment that present disclosure comprises provides a kind of method for preparing the tea extract of clarification, this method comprises the steps: to produce the tea extract, in this tea extract, add at least a acid that can be used for food, in this tea extract, add at least a salt, after this under MIN stirring, the tea extract is left standstill with the generation precipitation, and clarification tea extract, thereby the tea extract that obtains clarifying.In special embodiment, in fact simultaneously or in this tea extract, add described at least a acid and at least a salt that can be used for food each other continuously.In a special embodiment, described at least a salt is sodium chloride.In another special embodiment, described at least a salt is potassium citrate.In going back a special embodiment, described at least a salt is natrium citricum.In going back a special embodiment, described at least a salt is sodium phosphate.In going back a special embodiment, described at least a salt is potassium chloride.Embodiment of the present invention also comprise by the tea extract of the clarification of said method production and the beverage that contains the tea extract of this clarification.
Embodiment of the present invention also comprise a kind of method for preparing the tea extract of clarification, this method comprises adds at least a alkali in extracting water, the water that contains alkali is contacted with tealeaves to produce the tea extract, be reduced to the temperature of this tea extract about below 30 ℃, in this tea extract, add at least a acid that can be used for food, under MIN stirring, this tea extract is left standstill to produce precipitation then, and clarify this tea extract, thereby the tea extract that obtains clarifying.In special embodiment, the temperature of water is about at least 55 ℃.In another embodiment, described at least a alkali is sodium acid carbonate.Embodiment of the present invention also comprise by the tea extract of the clarification of said method production and the beverage that contains the tea extract of this clarification.
In order to reduce the muddiness of tea extract, present disclosure also comprises the embodiment of the method that a kind of tea extract for preparing clarification is provided, it is to add at least a alkali in the about at least 55 ℃ water that this method comprises to temperature, this water that contains alkali is contacted with at least a tea raw material to produce the tea extract, with this tea extracting liquid filtering, and its temperature is reduced to about below 30 ℃, in this tea extract, add at least a acid that can be used for food, in this tea extract, add at least a salt, under MIN stirring, this tea extract is left standstill to produce precipitation then, and clarify this tea extract, thereby the tea extract that obtains clarifying.In special embodiment, in fact simultaneously or in this tea extract, add described at least a acid and at least a salt that can be used for food each other continuously.
Embodiment of the present invention also comprise by the tea extract of the clarification of said method production and the beverage that contains the tea extract of this clarification.
According to detailed description and claim hereinafter, other purpose of the present invention, feature and beneficial effect will be tangible.
Detailed Description Of The Invention
As used herein, " to can be used for the acid of food " and be interpreted as meaning human or animal's consumption be safe any acid to term.Term " MIN stirring " is interpreted as meaning and seldom stirs or do not stir.Term " tea raw material (tea source) " is interpreted as meaning the tealeaves material, and it can be the form of (but being not limited to) concentrate, powder, liquid or leaf.Term " extraction water " is interpreted as meaning with the tea raw material and contacts to obtain the water of tea extract.Any disclosed number range should be interpreted as and be included among a small circle any in the disclosure scope bound.
As above summarize, embodiment of the present invention comprise a kind of method of tea extract of the clarification of preparation as follows: produce the tea extract, in this tea extract, add at least a acid and at least a salt that can be used for food, clarify the tea extract of tea extract then to obtain clarifying.Can obtain the tea extract by the known the whole bag of tricks of those of ordinary skills.Method for example comprises by the tealeaves material being contacted with the extraction water or being dissolved in the extraction water by the tea powder with drying, obtains the tea extract.
Embodiment of the present invention also comprise a kind of method for preparing the tea extract of clarification, this method comprises that Xiang Shuizhong adds at least a alkali, the water that contains alkali is contacted with at least a tea raw material to produce the tea extract, in this tea extract, add at least a acid that can be used for food, clarify this tea extract then, thus the tea extract that obtains clarifying.
Embodiment of the present invention also comprise the method for the tea extract of the another kind of clarification of preparation as follows: add at least a alkali in extracting water, this water that contains alkali is contacted with at least a tea raw material to produce the tea extract, in this tea extract, add at least a acid and at least a salt that can be used for food, clarify this tea extract then, thus the tea extract that obtains clarifying.
In some embodiments, before described clarification steps, can under MIN stirring, described tea extract be left standstill, to produce precipitation.In other embodiment, the time of leaving standstill under MIN stirring is about at least 30 minutes.Typically, the time of leaving standstill is long more, can be precipitated more fully.But the production of known time meeting limits product is so oversize time of repose is inefficent.Under the condition of the known multiple factors such as quality and quantity demand that include but not limited to production time and product, those skilled in the art can determine best time of repose easily.
Wherein use to extract water in the present invention, tea raw material and the ratio that extracts water can be at about 1:5 to about 1:100, or approximately 1:20 to about 1:60.In some embodiments, the temperature of extracting water can be about at least 55 ℃.In other embodiment, the temperature of extracting water can be between about 85 ℃ to about 100 ℃ (but not making the water boiling).Can be used in interpolation can cooling off the tea extract before the acid of food.In special embodiment, can be used in interpolation before the acid of food, be reduced to the temperature of tea extract about below 30 ℃.Also more specifically in the embodiment, the temperature of tea extract is reduced to about below 20 ℃, even in other embodiment, be reduced to about below 15 ℃.In the embodiment according to other, can be before interpolation can be used for the acid of food, with the tea extracting liquid filtering.
According to embodiments more of the present invention, the described acid that can be used for food can be selected from citric acid, phosphoric acid, tannic acid, hydrochloric acid, malic acid, tartaric acid, lactic acid, formic acid, ascorbic acid, arabo-ascorbic acid, sulfuric acid, fumaric acid, adipic acid and their mixture.In other embodiment, can add in the tea extract is enough to produce about 2.0 to about 4.5, the acid that can be used for food of the amount of the pH between preferred about 2.5 and about 4.2.In some embodiments, can make pH keep constant, change salt or the alkali that adds in the tea extract simultaneously.Under condition not bound by theory, think that acid condition promotes the gathering of tea insoluble substance, thereby form the easier compound that from the tea extract, is precipitated out.PH is low more, and the precipitation of expection tea insoluble substance is many more.But, the pH of tea extract is reduced to about below 2.0, bring unwanted taste or characteristic may for the tea extract of clarification, and bring unwanted taste or characteristic can for then the beverage of the tea extract that contains this clarification.In addition, need more neutral tea extract as fruit beverage, it may be necessary regulating pH subsequently.
Wherein use salt in the present invention, this salt can add before filtering the tea extract.In other embodiment, this salt can add before with the cooling of tea extract.According to particular embodiment of the present invention, this salt can with add the described acid that can be used for food add the tea extract in fact simultaneously.In other embodiment, can add described salt earlier, add the described acid that can be used for food subsequently.In other embodiment, can add the described acid that can be used for food earlier, add described salt subsequently.Under condition not bound by theory, think that salt is by promoting the formation of the easier tea insoluble substance compound that is precipitated out from the tea extract, and/or by in and the tea insoluble substance to produce the easier insoluble compound that from the tea extract, is precipitated out, further aggravate sour gathering and precipitation.The acid and being used in combination of salt that can be used for food also may have the chemical action that other promotes tea insoluble substance precipitation, and this depends on structure, polarity and other characteristic of compound in the tea extract.
According to embodiments more of the present invention, described salt can be selected from hydrochloride, carbonate, sulfate, acetate, bicarbonate, citrate, phosphate, hydrophosphate, tartrate, sorbate and their mixture.More particularly, described salt is selected from natrium citricum, potassium citrate, sodium chloride, potassium chloride, sodium phosphate, potassium phosphate and sodium sulphate.In some embodiments, to be enough to promoting the amount that sediment forms, in the tea extract, add described salt by the amount of quickening sedimentary formation and/or increasing insoluble thing.Should " enough amounts " be interpreted as meaning minimizing turbidity value (NTU) at least 10% necessary amount that realizes.In some embodiments, described salt is sodium chloride.In embodiment more specifically, in the tea extract, add sodium chloride with about 0.8 gram/kilogram tea raw material to the amount of about 320 gram/kilogram tea raw materials.Also more specifically in the embodiment, in the tea extract, add sodium chloride with about 4 gram/kilogram tea raw materials to the amount of about 160 gram/kilogram tea raw materials.In special embodiment, in the tea extract, add sodium chloride with about 20 gram/kilogram tea raw materials to the amount of about 40 gram/kilogram tea raw materials.In special embodiment, described at least a salt is potassium citrate.In embodiment more specifically, in the tea extract, add potassium citrate with about 8 gram/kilogram tea raw materials to the amount of about 600 gram/kilogram tea raw materials.Also more specifically in the embodiment, in the tea extract, add potassium citrate with about 8 gram/kilogram tea raw materials to the amount of about 320 gram/kilogram tea raw materials.In special embodiment, described at least a salt is natrium citricum.In embodiment more specifically, in the tea extract, add natrium citricum with about 8 gram/kilogram tea raw materials to the amount of about 160 gram/kilogram tea raw materials.In going back a special embodiment, described at least a salt is sodium phosphate.In embodiment more specifically, in the tea extract, add sodium phosphate with about 8 gram/kilogram tea raw materials to the amount of about 320 gram/kilogram tea raw materials.In going back a special embodiment, described at least a salt is potassium chloride.In embodiment more specifically, in the tea extract, add potassium chloride with about 5.6 gram/kilogram tea raw materials to the amount of about 200 gram/kilogram tea raw materials.
Wherein use alkali in the present invention, can earlier this alkali be added and extract in the water, the extraction water is contacted with tealeaves.In other embodiment, the extraction water is contacted with tealeaves, this alkali is added extract in water then.Under condition not bound by theory, think that Xiang Shuizhong adds the oxidation that alkali can strengthen polyphenol compound in the tea extract, thereby promote the formation of the easier compound that from the tea extract, is precipitated out.According to embodiments more of the present invention, described alkali can be selected from sodium carbonate, sodium acid carbonate, potash, saleratus, NaOH, potassium hydroxide, ammoniacal liquor and their mixture.More particularly, described alkali can be selected from sodium carbonate, sodium acid carbonate and their mixture.In some embodiments, to be enough to produce about 4.5 to about 8.0, preferably approximately 5.0 to about 7.5, even the amount of about 5.0 to about 6.5 pH is added alkali in the tea extract.According to special embodiment, described alkali is sodium acid carbonate.In embodiment more specifically, can in water, add sodium acid carbonate with about 0.8 gram/every kilogram of tea raw material to amount of about 80 gram/kilogram tea raw materials.Also more specifically in the embodiment, can be with the amount interpolation sodium acid carbonate of about 4 grams/every kilogram tea raw material to about 64 gram/every kilogram of tea raw materials.
Can use the whole bag of tricks well known by persons skilled in the art, clarification tea extract, this method includes but not limited to be used alone or in combination decant, filtration or centrifugal.According to embodiments more of the present invention, clarify the tea extract by using centrifuge, with the sediment of removing the tea insoluble substance and the tea extract that obtains clarifying.Can use conventional method then, the tea extract of clarifying is used for preparation of drinks.Perhaps, use method as known in the art, the tea extract of clarification can be processed into concentrate or powder type, this concentrate or powder type can be used for preparation of drinks then.Embodiment of the present invention also comprise by the tea extract of the clarification of said method production and the beverage that contains the tea extract of this clarification.
The present invention can be applied to, but is not limited to, tea of the tea of fermentation, unfermentable tea, part fermentation and composition thereof.For instance, the tea bag that can be used among the present invention is drawn together black tea, green tea and oolong tea.
The beverage that contains the tea extract of the present invention clarification can include, but are not limited to the tea beverage that contains of fruit drink, soda, nutritive beverage and other." contain tea beverage " and be interpreted as and mean every premium on currency and contain any beverage that surpasses 0 gram water soluble tea component.The beverage that contains the tea extract of the present invention's clarification can also contain other composition that is generally used in the beverage, and these other compositions include but not limited to anticorrisive agent, sweetener, nutritional labeling and spices.
The specific embodiment
The following examples are further for example understood the present invention, should by any way these embodiment be interpreted as limitation of the scope of the invention.On the contrary, obviously it should be interpreted as, can have various other the means of embodiment, variation scheme and equivalents of the present invention, after the description of reading this specification, under the scope that does not depart from spirit of the present invention and/or claims, those skilled in the art can associate these schemes.
Example I
The tea extract of clarification is prepared as follows: 5760 gram deionized waters are heated to about 90 ℃, and water poured in the rustless steel container that 192 gram black tea are housed (weight ratio of tealeaves and water is 1:30), then this rustless steel container is moved to temperature and is about 89 to about 91 ℃ water-bath.Mixture was stirred about 10 minutes lentamente, filter with the 200-300 eye mesh screen then, tea grounds is separated with the tea extract.It is about below 15 ℃ and be divided into 5 duplicate samples to use ice-water bath that the tea extract is cooled to then.Described in table 1, add the citric acid of same amount and the sodium chloride of different amounts in every duplicate samples.After sample stirred, under stirring, bottom line left standstill about 30 minutes at about 15 ℃.Use centrifugal separator to clarify each sample 3 minutes then, with the tea extract that obtains clarifying with 4000rpm.Then at the pH and the turbidity value of 20 ℃ of working samples and be recorded in the table 1.Turbidity value is to use that Merck Tubiquant 1500T measures and measurement unit is NTU (than an opacimetry method turbidity unit).
Table 1
(weight ratio of tealeaves and water is 1:30)
| Sample # | The NaCl (g NaCl/kg tealeaves) that adds | pH | Turbidity (NTU) |
| 1 | 0 | 2.85 | 719 |
| 2 | 4 | 2.88 | 595 |
| 3 | 8 | 2.87 | 435 |
| 4 | 20 | 2.80 | 350 |
| 5 | 160 | 2.67 | 55 |
Example II
Use the tea extract of the method preparation clarification identical with example I, but the weight ratio of tealeaves and water is about 1:20, the citric acids of the different amounts of interpolation regulate about 2.5 with the pH of tea extract.20 ℃ of mensuration with 4000rpm the pH and the turbidity value of sample after centrifugal 3 minutes, and be recorded in the table 2.
Table 2
(weight ratio of tealeaves and water is 1:20, pH=2.5)
| Sample # | The NaCl (g NaCl/kg tealeaves) that adds | Turbidity (NTU) |
| 1 | 0 | 439 |
| 2 | 4 | 78.4 |
| 3 | 160 | 24.9 |
EXAMPLE III
Use the tea extract of the method preparation clarification identical, but add sodium phosphate, replace sodium chloride according to the amount shown in the table 3 with example II.20 ℃ of mensuration with 4000rpm the pH and the turbidity value of sample after centrifugal 3 minutes, and be recorded in the table 3.
Table 3
(weight ratio of tealeaves and water is 1:20, pH=2.5)
| Sample # | The Na that adds 3PO 4 (g Na 3PO 4/ kg tealeaves) | Turbidity (NTU) |
| 1 | 0 | 539 |
| 2 | 320 | 24.9 |
EXAMPLE IV
With the weight ratio of tealeaves and the water of 1:50, and with citric acid the pH of tea extract is adjusted to about 2.9 and repeats identical method.20 ℃ of mensuration with 4000rpm the pH and the turbidity value of sample after centrifugal 3 minutes, and be recorded in the table 4.
Table 4
(weight ratio of tealeaves and water is 1:50, pH=2.9)
| Sample # | The Na that adds 3PO 4 (g Na 3PO 4/ kg tealeaves) | Turbidity (NTU) |
| 1 | 0 | 396 |
| 2 | 32 | 38.7 |
| 3 | 320 | 8.61 |
EXAMPLE IV
Use the tea extract of the method preparation clarification identical with example I.Add the different salt of interpolation in the tea extract according to the amount shown in the table 5.The weight ratio of tealeaves and water is about 1:30, and the citric acids that add different amounts regulate about 2.9 with the pH of tea extract.20 ℃ of mensuration with 4000rpm the pH and the turbidity value of sample after centrifugal 3 minutes, and be recorded in the table 5.
Table 5
(weight ratio of tealeaves and water is 1:30, pH=2.9)
| Sample # | Salt | The salt that adds (gram salt/kilogram tealeaves) | Turbidity (NTU) |
| 1 | Do not have | 0 | 538 |
| 2 | Sodium chloride | 32 | 393 |
| 3 | Sodium chloride | 320 | 55 |
| 4 | Potassium chloride | 5.6 | 358 |
The result shows that the muddiness that the different salt pairs of all tests reduce the tea extract all has effect.Obtain the required best salt amount of minimal turbidity and depend on used specific salts.
EXAMPLE V
The clarification tea extract be prepared as follows: with 6000 the gram deionized waters be heated to about 90 ℃ and with level divide equally 5 respectively be equipped with 40 the gram black tea rustless steel container in (weight ratio of tealeaves and water is 1:30).According to amount listed in the table 6, each adds the sodium acid carbonate of different amounts in every duplicate samples then.With whole 55 rustless steel containers move to temperature be about 89 ℃ to about 91 ℃ water-bath.Stirred the mixture lentamente about 10 minutes, and filtered with the 200-300 eye mesh screen then, tea grounds is separated with the tea extract.Use every part of tea extract sample of ice-water bath cooling then, and at about 20 ℃ of pH and turbidity values that detect the tea extract down.Data are presented at (the 1st measurement) in the table 6.Continue then the tea extract is cooled to below 15 ℃.The citric acid that in every duplicate samples, adds same amount then, and it is stirred.Under stirring, bottom line leaving standstill 30 minutes under about 15 ℃ then.Use centrifugal separator to carry out centrifugal clarification then and handled 3 minutes, clarify every duplicate samples with 4000rpm.Measure pH and turbidity value once more at 20 ℃, the result is presented at (the 2nd measurement) in the table 6.
Table 6
| Sample # | The NaHCO that adds 3 (g NaHCO 3/ kg tealeaves) | Measure # | pH | Turbidity (NTU) |
| 1 | 0 | 1 | 4.86 | 432 |
| 0 | 2 | 2.85 | 719 | |
| 2 | 4 | 1 | 5.09 | 230 |
| 4 | 2 | 2.96 | 292 | |
| 3 | 8 | 1 | 5.38 | 188 |
| 8 | 2 | 2.88 | 122 | |
| 4 | 16 | 1 | 6.0 | 118 |
| 16 | 2 | 3.09 | 14 | |
| 5 | 80 | 1 | 7.36 | 156 |
| 80 | 2 | 4.1 | 241 |
Result's demonstration, the amount that obtains the required best sodium acid carbonate of minimal turbidity are that about 4 gram sodium acid carbonate/kilogram tealeaves are to about 16 gram sodium acid carbonate/kilogram tealeaves, corresponding to the pH about 5.0 to about 6.1 of the 1st measurement.
Example VI
The clarification tea extract be prepared as follows: with 2400 the gram deionized waters be heated to 90 ℃ and on average pour into two respectively be equipped with 40 the gram black tea rustless steel container in.In rustless steel container, add 0.32 gram sodium acid carbonate.Then this rustless steel container is moved to temperature and is about 89 ℃ to about 91 ℃ water-bath.Stirred the mixture lentamente 10 minutes, and filtered with the 200-300 eye mesh screen then, so that tea grounds is separated with the tea extract.The tea extract that leaches is cooled in frozen water below 15 ℃.In each sample, add the citric acid of same amount, the pH value of tea extract is adjusted into about 2.9.Only in sample 2 tea extracts, add 0.6 gram NaCl.After stirring, two samples under MIN stirring, left standstill 30 minutes at about 15 ℃.Carried out each sample of clarifying treatment 3 minutes with centrifugal separator with 4000rpm then, the tea extract that obtains clarifying.At 20 ℃ of pH and turbidity values of measuring the tea extract of clarification.Measurement result is presented in the following table 7.
Table 7
| Sample # | The NaCl (g NaCl/kg tealeaves) that adds | Turbidity (NTU) |
| 1 | 0 | 36.9 |
| 2 | 20 | 15 |
The result shows, is used in combination sodium acid carbonate (extracting in the water) and sodium chloride (in the acidization) and helps to reduce turbidity, and effect is better than independent use sodium acid carbonate or sodium chloride.
Claims (35)
1. method for preparing the tea extract of clarification, this method comprises:
A) produce the tea extract;
B) in described tea extract, add at least a acid that can be used for food;
C) in described tea extract, add at least a salt;
D) described tea extract is left standstill to produce precipitation; And
E) tea extract of the described tea extract of clarification to obtain clarifying.
2. the process of claim 1 wherein to produce described tea extract, and wherein the temperature of water is about at least 55 ℃ by the extraction water is contacted with the tea raw material.
3. the method for claim 2, this method also are included in step (b) and filter described tea extract before and be reduced to the temperature of described tea extract about below 30 ℃.
4. the process of claim 1 wherein step (b) and (c) take place in fact simultaneously or each other before and after recur.
5. the process of claim 1 wherein that described at least a salt is selected from hydrochloride, carbonate, sulfate, acetate, bicarbonate, citrate, phosphate, hydrophosphate, tartrate, sorbate and their mixture.
6. the method for claim 5 is wherein added described at least a salt with the amount that is enough to promote sediment to form in described tea extract.
7. the process of claim 1 wherein that described at least a salt is sodium chloride, and add in the tea extract with about 0.8 gram/kilogram tea raw material to the amount of about 320 gram/kilogram tea raw materials.
8. the method for claim 7, the wherein said salt that can be used for food is potassium chloride, and adds in the tea extract with the amount of 5 gram/kilogram tea raw material to 200 gram/kilogram tea raw materials.
9. the method for claim 7, the wherein said salt that can be used for food is natrium citricum, and adds in the tea extract with the amount of 8 gram/kilogram tea raw material to 160 gram/kilogram tea raw materials.
10. the method for claim 7, the wherein said salt that can be used for food is potassium citrate, and adds in the tea extract with the amount of 8 gram/kilogram tea raw material to 320 gram/kilogram tea raw materials.
11. the method for claim 7, the wherein said salt that can be used for food is sodium phosphate, and adds in the tea extract with the amount of 8 gram/kilogram tea raw material to 320 gram/kilogram tea raw materials.
12. the process of claim 1 wherein that the described at least a acid that can be used for food is selected from citric acid, phosphoric acid, tannic acid, hydrochloric acid, malic acid, tartaric acid, lactic acid, formic acid, ascorbic acid, arabo-ascorbic acid, sulfuric acid, fumaric acid, adipic acid and their mixture.
13. the method for claim 12 is that the amount of about 2.0 to about 4.5 tea extract is added the described at least a acid that can be used for food to be enough to produce pH wherein.
14. the process of claim 1 wherein and described tea extract was left standstill 30 minutes at least in step (d).
15. the tea extract of the clarification that the method by claim 1 is produced.
16. contain the beverage of tea extract of the clarification of claim 15.
17. a method for preparing the tea extract of clarification, this method comprises:
A) in extracting water, add at least a alkali;
B) the described water that contains alkali is contacted to produce the tea extract with tealeaves;
C) in described tea extract, add at least a acid that can be used for food;
D) described tea extract is left standstill to produce sediment; And
E) the described tea extract of clarification is to obtain the tea extract of described clarification.
18. the method for claim 17, the temperature of wherein extracting water is about at least 55 ℃.
19. the method for claim 17, wherein said at least a alkali is selected from sodium acid carbonate, sodium carbonate and their mixture.
20. the method for claim 19, wherein said at least a alkali is sodium acid carbonate.
21. the method for claim 17 is wherein added sodium acid carbonate with about 0.8 gram/every kilogram of tea raw material to amount of about 80 gram/kilogram tea raw materials in water.
22. the method for claim 17 is that the amount of about 4.5 to about 8.0 tea extract is added described at least a alkali to produce pH wherein.
23. the method for claim 20 is that the amount of about 2.0 to about 4.5 tea extract is added the described at least a acid that can be used for food to produce pH wherein.
24. the method for claim 15 wherein left standstill described tea extract at least 30 minutes in step (e).
25. the tea extract of the clarification that the method by claim 17 is produced.
26. contain the beverage of tea extract of the clarification of claim 25.
27. a method for preparing the tea extract of clarification, this method comprises
A) in extracting water, add at least a alkali;
B) the described water that contains alkali is contacted to produce the tea extract with at least a tea raw material;
C) in described tea extract, add at least a acid that can be used for food;
D) in described tea extract, add at least a salt;
E) described tea extract is left standstill to produce sediment; And
F) tea extract of the described tea extract of clarification to obtain clarifying.
28. the method for claim 27, wherein step (c) and (d) generation in fact simultaneously, or recur each other.
29. the method for claim 27 is wherein added sodium chloride with about 0.8 gram/kilogram tea raw material to the amount of about 320 gram/kilogram tea raw materials in described tea extract.
30. the method 27 of claim is wherein added sodium acid carbonate with about 0.8 gram/every kilogram of tea raw material to amount of about 80 gram/kilogram tea raw materials in water.
31. the method for claim 27 is that the amount of about 4.5 to about 8.0 tea extract is added described at least a alkali to be enough to produce pH wherein.
32. the method for claim 27 is that the amount of about 2.0 to about 4.5 tea extract is added the described at least a acid that can be used for food to be enough to produce pH wherein.
33. the method for claim 27 wherein left standstill described tea extract at least 30 minutes in step (g).
34. the tea extract of the clarification that the method by claim 27 is produced.
35. contain the beverage of tea extract of the clarification of claim 34.
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| CN102144683A (en) * | 2010-03-09 | 2011-08-10 | 成都中医药大学 | Method for clarifying green tea extract liquid |
| CN103315096A (en) * | 2013-07-02 | 2013-09-25 | 安徽农业大学 | Method for preparing high-bright instant black tea |
| CN106857936A (en) * | 2017-02-14 | 2017-06-20 | 遵义茗香康源茶饮发展科技有限公司 | A kind of preparation technology of tea beverage |
| CN109953144A (en) * | 2017-12-22 | 2019-07-02 | 梧州市中茗茶业有限公司 | A kind of processing method of camellia nitidissima granules |
| CN116584600A (en) * | 2023-04-23 | 2023-08-15 | 中国农业科学院特产研究所 | Clarification method of ginseng water extract and preparation method of ginseng beverage |
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2008
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| CN102144683A (en) * | 2010-03-09 | 2011-08-10 | 成都中医药大学 | Method for clarifying green tea extract liquid |
| CN102144683B (en) * | 2010-03-09 | 2013-05-01 | 成都中医药大学 | Method for clarifying green tea extract liquid |
| CN101869158A (en) * | 2010-06-12 | 2010-10-27 | 成都市翻鑫家科技有限公司 | Preparation method of instant tea powder being suitable for carbonic acid tea drinks |
| CN101869158B (en) * | 2010-06-12 | 2012-10-03 | 成都市翻鑫家科技有限公司 | Preparation method of instant tea powder being suitable for carbonic acid tea drinks |
| CN103315096A (en) * | 2013-07-02 | 2013-09-25 | 安徽农业大学 | Method for preparing high-bright instant black tea |
| CN103315096B (en) * | 2013-07-02 | 2014-12-31 | 安徽农业大学 | Method for preparing high-bright instant black tea |
| CN106857936A (en) * | 2017-02-14 | 2017-06-20 | 遵义茗香康源茶饮发展科技有限公司 | A kind of preparation technology of tea beverage |
| CN109953144A (en) * | 2017-12-22 | 2019-07-02 | 梧州市中茗茶业有限公司 | A kind of processing method of camellia nitidissima granules |
| CN116584600A (en) * | 2023-04-23 | 2023-08-15 | 中国农业科学院特产研究所 | Clarification method of ginseng water extract and preparation method of ginseng beverage |
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