CN105265628A - Compressed black tea making method - Google Patents
Compressed black tea making method Download PDFInfo
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- CN105265628A CN105265628A CN201510747997.1A CN201510747997A CN105265628A CN 105265628 A CN105265628 A CN 105265628A CN 201510747997 A CN201510747997 A CN 201510747997A CN 105265628 A CN105265628 A CN 105265628A
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- tea
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- black tea
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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 purified 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 at least one time; 3, air separation and screening are conducted on the tea to remove contaminant residues, and the purification treatment of the raw material tea is completed. 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 pure water that tealeaves humidification is saturated to absorbing water, in humidification, controlling tealeaves temperature≤35 DEG C, control pure water simultaneously and add speed and addition, avoid tea juice to run off; Then, the tealeaves after humidification is placed in vacuum environment in time, and by applying microwave by tea-drying to moisture content≤10%; By regulating the vacuum of vacuum environment, microwave power and/or microwave continuous application time, control tealeaves temperature≤65 DEG C;
2) step 1) repeats at least one times;
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, in described step 1), the humidification of tealeaves is specially: first spray pure water to tealeaves and mix thoroughly or utilize atomization pure water 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 pure water to tealeaves and mix rear leaving standstill thoroughly, or leaving standstill after utilizing atomization pure water 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, the moisture being absorbed into tealeaves inside during humidification is heated simultaneously and from inside to outside moves simultaneously, and the hydrone moving to tealeaves surface in a large number has then been actuated the pollutant stripping on tealeaves surface, come off.The degraded of agricultural chemicals comprises thermal decomposition and rising 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.
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 is poured into bamboo sieve and make thinner, spray pure water and carry out humidification;
For avoiding pure water fountain height too much, causing tea juice to run off, spraying pure water and carrying out several times, 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 pure water, leave standstill after atomization pure water 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) repeats once;
The object that step 1) repeats is to make the pollutant of tealeaves surface attachment reliably peel 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, repeat number of times can be once, secondary, three times, even more times;
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 20 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 is inserted in vacuum environment, in vacuum environment, spray pure water or utilize atomization pure water 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;
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 45 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 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 is inserted in vacuum environment, in vacuum environment, spray pure water or utilize atomization pure water soak tealeaves and leave standstill, control tealeaves temperature≤30 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) in triplicate;
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 65 DEG C, the temperature raising in short-term of 15 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 (4)
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 pure water that tealeaves humidification is saturated to absorbing water, in humidification, controlling tealeaves temperature≤35 DEG C, control pure water simultaneously and add speed and addition, avoid tea juice to run off; Then, the tealeaves after humidification is placed in vacuum environment in time, and by applying microwave by tea-drying to moisture content≤10%; By regulating the vacuum of vacuum environment, microwave power and/or microwave continuous application time, control tealeaves temperature≤65 DEG C;
2) step 1) repeats at least one times;
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, in described step 1), in described step 1), the humidification of tealeaves is specially: first spray pure water to tealeaves and mix thoroughly or utilize atomization pure water to infiltrate tealeaves, then the tealeaves after adding water being placed in vacuum environment and leaving standstill.
4. preparation method as claimed in claim 1, it is characterized in that, in described step 1), in described step 1), the humidification of tealeaves is specially: tealeaves to be humidified is placed in vacuum environment, in vacuum environment, spray pure water to tealeaves and mix rear leaving standstill thoroughly, or leaving standstill after utilizing atomization pure water to infiltrate tealeaves.
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| CN201510747997.1A CN105265628A (en) | 2015-11-06 | 2015-11-06 | Compressed black tea making method |
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| CN201510747997.1A CN105265628A (en) | 2015-11-06 | 2015-11-06 | Compressed black tea making method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102669313A (en) * | 2012-05-25 | 2012-09-19 | 重庆市天岗玉叶茶业有限公司 | Roasted famous high-quality green tea and production process thereof |
| CN103493910A (en) * | 2013-09-18 | 2014-01-08 | 林志宾 | Preparation method and product of tuan-shaped black tea (tuan is a Chinese character) |
| CN103549047A (en) * | 2013-11-07 | 2014-02-05 | 林志宾 | Preparation method of compressed tea |
| CN103689156A (en) * | 2013-12-11 | 2014-04-02 | 浙江茗皇天然食品开发有限公司 | Processing method of instant tea with less organophosphorus pesticide residue |
| CN104026272A (en) * | 2013-03-04 | 2014-09-10 | 四川早白尖茶业有限公司 | Processing method for Congou black tea |
| CN104663933A (en) * | 2015-02-17 | 2015-06-03 | 杭州艺福堂茶业有限公司 | Disposable tea processing technology |
-
2015
- 2015-11-06 CN CN201510747997.1A patent/CN105265628A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102669313A (en) * | 2012-05-25 | 2012-09-19 | 重庆市天岗玉叶茶业有限公司 | Roasted famous high-quality green tea and production process thereof |
| CN104026272A (en) * | 2013-03-04 | 2014-09-10 | 四川早白尖茶业有限公司 | Processing method for Congou black tea |
| CN103493910A (en) * | 2013-09-18 | 2014-01-08 | 林志宾 | Preparation method and product of tuan-shaped black tea (tuan is a Chinese character) |
| CN103549047A (en) * | 2013-11-07 | 2014-02-05 | 林志宾 | Preparation method of compressed tea |
| CN103689156A (en) * | 2013-12-11 | 2014-04-02 | 浙江茗皇天然食品开发有限公司 | Processing method of instant tea with less organophosphorus pesticide residue |
| CN104663933A (en) * | 2015-02-17 | 2015-06-03 | 杭州艺福堂茶业有限公司 | Disposable tea processing technology |
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Address after: 354200 Nanping City, Fujian province Jianyang District Pang Qi Road No. 6 Applicant after: Lin Zhibin Address before: 104, room 11, building 66, Wuyi Road, Wuyi Road, Nanping, Fujian, Wuyishan 354300, China Applicant before: Lin Zhibin |
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Application publication date: 20160127 |
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