CN105265630A - Compressed black tea making method - Google Patents
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- CN105265630A CN105265630A CN201510748149.2A CN201510748149A CN105265630A CN 105265630 A CN105265630 A CN 105265630A CN 201510748149 A CN201510748149 A CN 201510748149A CN 105265630 A CN105265630 A CN 105265630A
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Abstract
The invention discloses a compressed black tea making method. The compressed black tea making method adopts a finished loose black tea product as raw material tea. In preparation, the raw material tea is purified first, and then the purified raw material tea is made into 20 g to 5000 g of compressed black tea. The specific steps of purification treatment include that 1, the tea is wetted by using solvent water till the tea absorbing the water is saturated, and then the wetted tea is timely put in a vacuum environment and is dried by applying microwaves till the moisture content is smaller than or equal to 10%; 2, the step 1 is repeated for multiple times; 3, air separation and screening are conducted on the tea to complete the purification treatment of the raw material tea. The compressed black tea making method achieves thorough purification of the inside and outside of the raw material tea on the premise that the aroma, taste and quality of the tea are not destroyed and ensures that the finally prepared compressed black tea is hygienic and safe.
Description
Technical field
The present invention relates to a kind of black tea compressed tea preparation method.
Background technology
Because the black tea such as Pu'er tea, six fort tea need lengthy fermentation, ageing, therefore black tea makes compressed tea traditionally.But because black tea directly pays system by after fresh tea leaf harvesting usually, and fresh tea leaf not only surface attachment have the pollutant such as dust, worm's ovum, birds and beasts ight soil, pesticide residue, its inside is also remaining the pesticide molecule absorbed by tealeaves, these pollutants finally enter millet paste by along with brewing of tealeaves and endanger the healthy of drinking person, therefore, how to remove the pollutant on tealeaves, ensure the hygienic safety of black tea, become people's problem demanding prompt solution.
Summary of the invention
For prior art Problems existing, the object of the present invention is to provide a kind of black tea compressed tea preparation method, the method, by increasing cleaning procedure, removes the pollutant of raw tea material surface attachment, remove the pesticide residue of raw tea material inside, to ensure the safe and sanitary of prepared black tea compressed tea.
For achieving the above object, technical solution of the present invention is as follows:
A kind of black tea compressed tea preparation method, the method, using the black tea loose tea of finished product as raw tea material, during preparation, first carries out purified treatment to raw tea material, and then by softening for the raw tea material humidification after purifying, compression molding, drying, make the black tea compressed tea of 20-5000 grammes per square metres; Wherein, the concrete steps of described purified treatment are:
1) first utilizing aqueous solvent that tealeaves humidification is saturated to absorbing water, then the tealeaves after humidification being placed in vacuum environment in time, and by applying microwave by tea-drying to moisture content≤10%;
Control tealeaves temperature≤35 DEG C in humidification, control aqueous solvent simultaneously and add speed and addition, avoid tea juice to run off; Time dry, by regulating the vacuum of vacuum environment, microwave power and/or microwave continuous application time, control tealeaves temperature≤65 DEG C;
2) step 1) repeated several times altogether, wherein solvent for use water is the pure water being added with pesticide degradable enzyme at least one times, and all the other each solvent for use water are pure water, or, in described several times, at every turn all to be added with the pure water of pesticide degradable enzyme as aqueous solvent;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue.
Further, described purified treatment also comprises step:
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is≤55 DEG C, between be 60-65 DEG C with temperature temperature raising is in short-term impacted, the number of times that duration and curing that temperature raising is in short-term impacted at every turn temperature raising in short-term of inserting in process is impacted is determined according to the fragrance of tealeaves;
Further, described step 3), 4) order can exchange.
Further, described pesticide degradable enzyme is organic phosphorus degrading enzyme.
Further, described pesticide degradable enzyme is than sub-enzyme, than the addition of sub-enzyme is: 100 liters of pure water add >=0.5 gram of sub-enzyme dry powder of ratio.
Further, the addition of the sub-enzyme of described ratio is: 100 liters of pure water add 1-6 grams of sub-enzyme dry powder of ratio.
Further, in described step 1), the humidification of tealeaves is specially: first spray aqueous solvent to tealeaves and mix thoroughly or utilize atomization aqueous solvent to infiltrate tealeaves, then the tealeaves after adding water being placed in vacuum environment and leaving standstill.
Further, in described step 1), the humidification of tealeaves is specially: tealeaves to be humidified is placed in vacuum environment, in vacuum environment, sprays aqueous solvent to tealeaves and mix rear leaving standstill thoroughly, or leaving standstill after utilizing atomization aqueous solvent to infiltrate tealeaves.
Finished product black tea loose tea is streak, and tealeaves only has outside the surface of 10% is exposed to, the surface of 90% is packed to as inner surface, and correspondingly, the dust on 90% tealeaves surface, worm's ovum, birds and beasts ight soil, agriculture is residual is wrapped in streak tealeaves.The present invention is when to raw tea material purified treatment, first that tealeaves humidification is saturated to absorbing water, and streak tealeaves is launched, makes the surface of tealeaves all become outer surface, thus for tealeaves surface contaminant stripping, remove and create conditions.
Heating using microwave is body heating, is heated inside and outside tealeaves simultaneously.Along with the applying of microwave, from inside to outside move after the moisture being absorbed into tealeaves inside during humidification is heated, the hydrone moving to tealeaves surface in a large number has then been actuated the stripping of tealeaves surface contaminant, has been come off simultaneously.The degraded of agricultural chemicals is except utilizing except digestive enzyme degrades, also comprise thermal decomposition and volatilization, temperature is higher, thermal decomposition is more abundant, volatilization is then except temperature influence, the more important thing is that the reduction evaporation rate along with ambient pressure environment will be accelerated greatly, thus, vacuum environment and heating using microwave facilitate the degraded that tealeaves is surperficial and inner agriculture is residual greatly.Along with tealeaves Cell uptake microwave vibrations, heating, also promote pesticide molecule from the stripping tealeaves cell, the hydrone from inside to outside moved then achieves the product after by residual for agriculture molecule and degraded thereof from the inner transport to tealeaves surface of tealeaves, discharge simultaneously.Selection by winnowing, screening operation achieve the final removing to the pollutant come off from tealeaves surface.
Pesticide degradable enzyme is scientific research personnel is the Pesticide Residue solved on agricultural product and the biologic product developed specially, this kind of preparation comprise Beijing Schengenbiya Bioengineering Technology Co., Ltd. release than sub-pesticide degradable enzyme (being called for short than sub-enzyme), the Ma Dier pesticide degradable enzyme (being called for short Ma Dier enzyme) that Beijing ZTNH Enzyme Preparation Co., Ltd. releases, the pesticide degradable enzyme (in abbreviation section's enzyme) that Liaoning Zhongke Biological Engineering Co., Ltd. releases, the green core pesticide degradable enzyme (being called for short green core enzyme) that Beijing Jianong New Trading Development Co., Ltd. releases, etc.For than sub-enzyme, this digestive enzyme is organic phosphorus degrading enzyme, to pesticide molecule efficient degradation, and can not only can not cause secondary pollution to environment.
Previously, once someone utilized than sub-enzyme to purify tealeaves, or spray is shone on the fresh leaves of tea plant not yet plucked, or the green tea fresh leaves plucked for purifying object, especially the latter, adopt the long-time pesticide molecule soaking fresh interlobar part of degrading, outside, these purification styles not only production efficiency are low, lower than the utilization rate of sub-enzyme, and there will be similar " rain cyanines " phenomenon.Long-term tea making facts have proved, fresh leaf moisture content is too high, easily burntly when killing cyanines becomes, the tea product made, puckery and thin, and water colour is muddy.If fresh leaf, in purification run or handling process, makes fresh leaf be subject to some damages.This damage is that injured or broken or pressurized occur sultry, usually can play irrational fermentation before making, makes the dried-up or red stain of fresh leaf, is namely commonly referred to as " dead leaf ", affects tea-making quality very large.In the making of black tea and quality responses process, except some link such as pile-fermentation has microorganism participation, completing before, just rubbing technical process is " fermentation " in the biological oxidation meaning of self enzymatic reaction, this is due in the cell of tealeaves, catechin is present in cell liquid, and Polyphenols oxidizing ferment is mainly present in cell membrane, so " fermentation " tea needs by kneading, make cell membrane damaged, after tealeaves vesicular membrane damaged, Polyphenols in vacuole, the materials such as amino acid, progressively there is oxydasis, simultaneously due to catechin oxidation, a part of material in leaf is made to produce chemical reaction, generate distinctive color, smell and taste quality.If fresh leaf is dealt with improperly, occur " rain cyanines " or " dead leaf ", further process is with regard to difficulty very, affects tea-making quality very large.
The finished product loose tea of aqueous solvent to drying containing digestive enzyme is adopted to purify, because fresh leaf wax coat is destroyed, dry tea water imbibition increases, digestive enzyme can arrive each corner and the tealeaves inside on tealeaves surface fast, and under vacuum conditions, can not only discharge the gas of tealeaves adsorption, further accelerated solvent water soaking tealeaves, digestive enzyme obtains and fully, accurately utilizes.Therefore, with directly carry out compared with purified treatment to fresh tea leaf, the inventive method both avoided " rain cyanines " and fresh leaf damages the negative effect brought, in turn ensure that the production efficiency that tealeaves purifies, ensure that making full use of of digestive enzyme, and ensure that effective degraded of the inside and outside residual pesticide molecule of tealeaves.
Finished product loose tea has formed distinctive black tea organoleptic quality, after dry tea absorbs water again, if run into suitable temperature again under aerobic state, further biological oxidation (being commonly called as " fermentation ") will occur in tealeaves, and change the existing fragrance of the black tea of finished product, flavour.Therefore, in order to reduce this impact as far as possible, during humidification of the present invention, 1. controlling the addition of pure water, avoiding adding dilutional hyponatremia and causing tea juice to run off; 2. control tealeaves temperature, avoid or reduce tealeaves water suction its inside rear as far as possible the biochemical reactions such as non-enzymatic oxidation, microbial growth occur.Tealeaves to be humidified is placed in vacuum environment, and in vacuum environment, spray pure water or utilize atomization pure water to infiltrate, first vacuumizing and exhausting, rear infiltration, the effect that vacuumizes again can be produced, not only be conducive to the gas of discharging tealeaves absorption, and enable water immerse tealeaves inside fast, more easily infiltrate whole tealeaves, shorten humidification periods, reduce the biochemical reaction in tealeaves.In vacuum environment, humidification is with standing, reduces the oxygen content in environment, can suppress aerobic participation in tealeaves
'sthe further generation of various biological oxidation, provides necessary condition for keeping the original quality of tealeaves.
By the finished product loose tea humidification again of drying, the fragrance of tealeaves, flavour can be weakened.After tealeaves being carried out to selection by winnowing, screening, increase baking step, and impact in the temperature raising in short-term of curing process special secondary school door and arrange 60-65 DEG C, can excite tea aroma, strengthening tea flavour, makes the fragrance of tealeaves, flavour returns to the state before purification, even stronger.
In a word, the present invention, under not damaging tealeaves and having the prerequisite of fragrance, flavour, quality, achieves the thorough purification inside and outside to raw tea material, ensure that the safe and sanitary of final prepared black tea compressed tea.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
embodiment 1
Prepare black tea compressed tea using osmanthus, Yunnan black tea finished product loose tea as raw tea material, concrete steps are as follows:
1) first, finished product loose tea or finished product loose tea are poured into bamboo sieve and make thinner, spray aqueous solvent and carry out humidification;
For avoiding aqueous solvent fountain height too much, causing tea juice to run off, spraying solvent water and repeatedly carrying out, all mix thoroughly after each water spray and beat heap, to make moisture content be fully drawn in tealeaves, until tealeaves water suction is saturated.After each water spray, all timely being moved to by tealeaves in vacuum environment leaves standstill, and controls tealeaves temperature≤35 DEG C simultaneously;
To tealeaves humidification except spraying aqueous solvent, leave standstill after atomization aqueous solvent also can be utilized to be infiltrated by tealeaves;
Then, the tealeaves after humidification is placed in vacuum environment in time, and by applying microwave by tea-drying to moisture content≤10%;
In dry run, by regulating vacuum and the microwave power of vacuum environment, to control tealeaves temperature≤55 DEG C, to avoid undesirable biochemical reaction occurs in tealeaves, and affecting fragrance, the flavour of tealeaves, affecting the quality of tealeaves.Certainly, except regulating microwave power, can also adopt simultaneously intermittently apply microwave, and control the mode of each microwave continuous application time, control tealeaves temperature≤55 DEG C;
2) step 1) altogether in triplicate, and during first time humidification, solvent for use water is made up of the pure water be added with than sub-enzyme, is: 100 liters of pure water add 1 gram of sub-enzyme dry powder of ratio than the addition of sub-enzyme; For the second time, third time all carries out humidification using pure water as aqueous solvent to tealeaves;
Certainly, first time also can carry out humidification as aqueous solvent to tealeaves by pure water, and second time carries out humidification as aqueous solvent to tealeaves than the pure water of sub-enzyme to be added with, and third time still carries out humidification using pure water as aqueous solvent to tealeaves.And, can also first time, second time all to be added with pure water than sub-enzyme as aqueous solvent, third time is using pure water as aqueous solvent; Or, for the first time, second time all using pure water as aqueous solvent, third time is to be added with pure water than sub-enzyme as aqueous solvent.Can also first, second, third 3 times all to be added with pure water than sub-enzyme as aqueous solvent;
The object of step 1) repeated several times is to ensure that the pollutant of tealeaves surface attachment is reliably peeled off, come off, and make residual the obtaining of the inner agriculture of tealeaves degrade as far as possible thoroughly and remove, therefore, for reaching this object, the number of times that step 1) repeats altogether can be secondary, three times, four times, even more times;
Adding than the object of sub-enzyme is to make the residual abundant degraded of agriculture, therefore, when step 1) repeats, need to adopt the pure water be added with than sub-enzyme as aqueous solvent at least one times.Further, step 1) repeat number of times, can determine according to the effect after tea kinds, process than the addition of sub-enzyme in pure water.When only adopting the pure water that is once added with than sub-enzyme as aqueous solvent, the addition than sub-enzyme suitably can be improved.Can select in the scope that 100 liters of pure water add the sub-enzyme dry powder of 0.5-6 grams of ratios than the addition of sub-enzyme, usually can not add 6 grams of sub-enzyme dry powder of ratio more than 100 liters of pure water;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue;
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is 40 DEG C, applies that at least 2 temperature are 60 DEG C, the temperature raising in short-term of 30 minutes duration is impacted period, obtains required purification finished product loose tea;
The teas (degree of fermentation is 100%) of black Camellia after fermentation, should not be with an internal heat.Low temperature should be adopted to hold continue and cure (40-55 DEG C), its high temperature impact temperature can not more than 65 DEG C.If stoving temperature is too high, dry synanche after drink;
Curing in process the object applying the impact of temperature raising is in short-term excite tea aroma, and strengthening tea flavour, makes up finished product loose tea because adding wet water absorbent by the fragrance, the flavour that weaken.The duration that each temperature raising is in short-term impacted and the whole number of times curing the impact of temperature raising in short-term of inserting in process are determined according to the fragrance of tealeaves.The temperature that temperature raising is in short-term impacted is higher, and the duration that each temperature raising is impacted should be shorter;
Step 3) and 4) order can exchange.Certainly, first remove pollutant residue, then carry out high bake temperature, contribute to the secondary pollution of preventing pollution thing;
5) by softening for the raw tea material humidification after purification, compression molding, drying, the black tea compressed tea of bulk of 20-5000 grammes per square metres is made;
It is to be noted, the object increasing step 4) makes up finished product loose tea because adding wet water absorbent by the fragrance, the flavour that weaken, make the fragrance of raw tea material, flavour returns to the state before purification, and in follow-up black tea compressed tea forming process, also raw tea material humidification can be softened, therefore, in order to Simplified flowsheet, enhance productivity, when purified treatment is carried out to raw tea material, can not step 4) be carried out, and be undertaken being used for exciting the temperature raising in short-term of tea aroma impact to be put in the forming process of follow-up black tea compressed tea.In addition, be all in order to should raw tea material be purified to the series of measures taked during raw tea material purified treatment, avoid the active ingredient in tealeaves to run off again, do not lose the existing fragrance of raw tea material, flavour.Equally, in order to ensure the quality of prepared black tea compressed tea, needing equally during preparation to prevent the active ingredient in tealeaves to run off, not losing the existing fragrance of raw tea material, flavour;
Raw tea material after purification is made black tea compressed tea and can consult ZL201310428118.X patent group shape black tea preparation method, the black tea of group's shape in fact also belongs to compressed tea, just with the varying in weight of the compressed tea described in the application.
embodiment 2
Prepare black tea compressed tea using six fort tea finished product loose teas as raw tea material, concrete steps are as follows:
1) first, finished product loose tea or finished product loose tea are inserted in vacuum environment, in vacuum environment, spray aqueous solvent or utilize atomization aqueous solvent infiltrate tealeaves and leave standstill, control tealeaves temperature≤30 DEG C, until tealeaves water suction is saturated simultaneously;
Then, the tealeaves after humidification is placed in vacuum environment, and by applying microwave by tea-drying to moisture content≤10%;
In dry run, by regulating vacuum and the microwave power of vacuum environment, to control tealeaves temperature≤65 DEG C;
2) step 1) repeats secondary altogether.During first time humidification, solvent for use water is made up of the pure water be added with than sub-enzyme, is: 100 liters of pure water add 2 grams of sub-enzyme dry powder of ratio than the addition of sub-enzyme; Second time carries out humidification using pure water as aqueous solvent to tealeaves;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue;
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is 55 DEG C, applies that at least 2 temperature are 65 DEG C, the temperature raising in short-term of 20 minutes duration is impacted period, obtains required purification finished product loose tea;
5) by softening for the raw tea material humidification after purification, compression molding, drying, the black tea compressed tea of bulk of 20-5000 grammes per square metres is made.
embodiment 3
Using Hubei, old blue or green tea finished product loose tea prepares black tea compressed tea as raw tea material, and concrete steps are as follows:
1) first, finished product loose tea or finished product loose tea are inserted in vacuum environment, in vacuum environment, spray aqueous solvent or utilize atomization aqueous solvent soak tealeaves and leave standstill, control tealeaves temperature≤25 DEG C simultaneously;
Then, the tealeaves after humidification is placed in vacuum environment, and by applying microwave by tea-drying to moisture content≤10%;
In dry run, by regulating vacuum and the microwave power of vacuum environment, to control tealeaves temperature≤60 DEG C;
2) step 1) altogether in triplicate, and first time carries out humidification using pure water as aqueous solvent to tealeaves, and during second time humidification, solvent for use water is made up of the pure water be added with than sub-enzyme, is: 100 liters of pure water add 1 gram of sub-enzyme dry powder of ratio than the addition of sub-enzyme; Third time carries out humidification using pure water as aqueous solvent to tealeaves;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue;
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is 55 DEG C, applies that at least 2 temperature are 65 DEG C, the temperature raising in short-term of 10 minutes duration is impacted period, obtains required purification finished product loose tea;
5) by softening for the raw tea material humidification after purification, compression molding, drying, the black tea compressed tea of bulk of 20-5000 grammes per square metres is made.
embodiment 4
Prepare black tea compressed tea using six fort tea finished product loose teas as raw tea material, concrete steps are as follows:
1) first, finished product loose tea or finished product loose tea are inserted in vacuum environment, in vacuum environment, spray aqueous solvent or utilize atomization aqueous solvent infiltrate tealeaves and leave standstill, control tealeaves temperature≤30 DEG C, until tealeaves water suction is saturated simultaneously;
Then, the tealeaves after humidification is placed in vacuum environment, and by applying microwave by tea-drying to moisture content≤10%;
In dry run, by regulating vacuum and the microwave power of vacuum environment, to control tealeaves temperature≤55 DEG C;
2) step 1) repeats secondary altogether.During first time humidification, solvent for use water is made up of the pure water being added with Ma Dier enzyme, and the addition of Ma Dier enzyme is: 100 liters of pure water add 2 Ke Madier enzyme dry powder; Second time carries out humidification using pure water as aqueous solvent to tealeaves;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue;
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is 55 DEG C, applies that at least 2 temperature are 65 DEG C, the temperature raising in short-term of 10 minutes duration is impacted period, obtains required purification finished product loose tea;
5) by softening for the raw tea material humidification after purification, compression molding, drying, the black tea compressed tea of bulk of 20-5000 grammes per square metres is made.
embodiment 5
Using Hubei, old blue or green tea finished product loose tea prepares black tea compressed tea as raw tea material, and concrete steps are as follows:
1) first, finished product loose tea or finished product loose tea are inserted in vacuum environment, in vacuum environment, spray aqueous solvent or utilize atomization aqueous solvent soak tealeaves and leave standstill, control tealeaves temperature≤25 DEG C simultaneously;
Then, the tealeaves after humidification is placed in vacuum environment, and by applying microwave by tea-drying to moisture content≤10%;
In dry run, by regulating vacuum and the microwave power of vacuum environment, to control tealeaves temperature≤50 DEG C;
2) step 1) altogether in triplicate, and first time carries out humidification using pure water as aqueous solvent to tealeaves, and during second time humidification, solvent for use water is made up of the pure water being added with middle section enzyme, and the addition of middle section enzyme is: 100 liters of pure water add 1 Ke Zhong section enzyme dry powder; Third time carries out humidification using pure water as aqueous solvent to tealeaves;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue;
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is 50 DEG C, applies that at least 2 temperature are 60 DEG C, the temperature raising in short-term of 20 minutes duration is impacted period, obtains required purification finished product loose tea;
5) by softening for the raw tea material humidification after purification, compression molding, drying, the black tea compressed tea of bulk of 20-5000 grammes per square metres is made.
Above-mentioned example is just for illustration of the present invention; embodiments of the present invention are not limited to these examples, and the various detailed description of the invention meeting inventive concept that those skilled in the art make according to the principle introduced in description of the present invention are all within protection scope of the present invention.
Claims (7)
1. a black tea compressed tea preparation method, the method, using the black tea loose tea of finished product as raw tea material, is characterized in that, during preparation, first purified treatment is carried out to raw tea material, and then by softening for the raw tea material humidification after purifying, compression molding, drying, make the black tea compressed tea of 20-5000 grammes per square metres; Wherein, the concrete steps of described purified treatment are:
1) first utilizing aqueous solvent that tealeaves humidification is saturated to absorbing water, then the tealeaves after humidification being placed in vacuum environment in time, and by applying microwave by tea-drying to moisture content≤10%;
Control tealeaves temperature≤35 DEG C in humidification, control aqueous solvent simultaneously and add speed and addition, avoid tea juice to run off; Time dry, by regulating the vacuum of vacuum environment, microwave power and/or microwave continuous application time, control tealeaves temperature≤65 DEG C;
2) step 1) repeated several times altogether, wherein solvent for use water is the pure water being added with pesticide degradable enzyme at least one times, and all the other each solvent for use water are pure water, or, in described several times, at every turn all to be added with the pure water of pesticide degradable enzyme as aqueous solvent;
3) selection by winnowing, screening are carried out to tealeaves, remove pollutant residue.
2. preparation method as claimed in claim 1, it is characterized in that, described purified treatment also comprises step:
4) by tea baking to moisture content≤6%, the basic stoving temperature cured in process is≤55 DEG C, between be 60-65 DEG C with temperature temperature raising is in short-term impacted, the number of times that duration and curing that temperature raising is in short-term impacted at every turn temperature raising in short-term of inserting in process is impacted is determined according to the fragrance of tealeaves;
Further, described step 3), 4) order can exchange.
3. preparation method as claimed in claim 1, it is characterized in that, described pesticide degradable enzyme is organic phosphorus degrading enzyme.
4. preparation method as claimed in claim 1, it is characterized in that, described pesticide degradable enzyme is than sub-enzyme, than the addition of sub-enzyme is: 100 liters of pure water add >=0.5 gram of sub-enzyme dry powder of ratio.
5. preparation method as claimed in claim 4, it is characterized in that, the addition of the sub-enzyme of described ratio is: 100 liters of pure water add 1-6 grams of sub-enzyme dry powder of ratio.
6. preparation method as claimed in claim 1, it is characterized in that, in described step 1), the humidification of tealeaves is specially: first spray aqueous solvent to tealeaves and mix thoroughly or utilize atomization aqueous solvent to infiltrate tealeaves, then the tealeaves after adding water being placed in vacuum environment and leaving standstill.
7. preparation method as claimed in claim 1, is characterized in that, in described step 1), the humidification of tealeaves is specially: tealeaves to be humidified is placed in vacuum environment, in vacuum environment, spray aqueous solvent to tealeaves and mix rear leaving standstill thoroughly, or leaving standstill after utilizing atomization aqueous solvent to infiltrate tealeaves.
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|---|---|---|---|---|
| CN1692786A (en) * | 2005-06-14 | 2005-11-09 | 汤兴初 | Method for producing compated tea from dry tea |
| CN101647502A (en) * | 2009-07-03 | 2010-02-17 | 长兴茶乾坤食品有限公司 | High-purification automatic impurity-removing and tea-sterilizing process |
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