CN108402209A - A kind of time preparation method for green tea - Google Patents
A kind of time preparation method for green tea Download PDFInfo
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- CN108402209A CN108402209A CN201810510721.5A CN201810510721A CN108402209A CN 108402209 A CN108402209 A CN 108402209A CN 201810510721 A CN201810510721 A CN 201810510721A CN 108402209 A CN108402209 A CN 108402209A
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- tealeaves
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- 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
- A23F3/06—Treating tea before extraction; Preparations produced thereby
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- 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
- A23F3/06—Treating tea before extraction; Preparations produced thereby
- A23F3/12—Rolling or shredding tea leaves
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
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Abstract
The present invention relates to tea processing field, specifically disclose a kind of time preparation method for green tea, include the following steps：(1) it finishes, is finished using green-keeping machine, tealeaves volume is less than or equal to the 4/5 of inner cylinder cavity volume, the hot-air that temperature is 180~250 DEG C is passed through in inside tube inner chamber, until there is no green odours for tealeaves；(2) it rubs for the first time, the tealeaves handled through step (1) is rubbed, first carry out rubbing for the first time, until the juice in tealeaves starts to leach；(3) it rubs for the second time, after 10~20min, until tealeaves curling is strip；(4) it detaches, shakes tealeaves, individual tea stalk in tealeaves is made to drop out, remove tea stalk；(5) dry, the tealeaves handled through step (4) is dried using 60~100 DEG C of hot winds.This programme can reduce tealeaves fragmentation.
Description
Technical field
The present invention relates to tea processing field, and in particular to Green Tea Processing field.
Background technology
Tealeaves contains the ingredients such as catechin, cholestenone, caffeine, inositol, folic acid, pantothenic acid in China, tealeaves, can
To promote health.Tea is known as " one of three big beverage of the world ", and the people having tea now is more and more.The type of tealeaves is very
More, wherein green tea is not fermented manufactured tea, remains the natural materials of fresh leaf, tea polyphenols, catechin, the Ye Lv contained
Element, caffeine, amino acid, vitamins and other nutritious components are also more, these natural nutrition compositions in green tea are to anti-aging, anti-
Cancer, anticancer, sterilization, anti-inflammatory etc. have special-effect, are less than other teas.
Green tea famous-object is most, and not only fragrant high taste is long, excellent quality, and moulding is unique, has higher value of art appreciation,
And the taste of green tea is influenced by the processing method of green tea.It is typically chosen the tender shoots of tea tree treetop when picking tealeaves, and tender shoots
At least a piece of tealeaves and a tea stalk are generally comprised, in green tea production process, tealeaves and tea stalk meeting dehydration, tealeaves is easy and tea
Stalk separation, finally generates individual tea stalk, and tea stalk is lightly seasoned, ornamental value is poor, and individual tea stalk is mixed into finished product green tea and can reduce
The quality of green tea.
Traditional green tea producing process generally can just carry out the separation of tea stalk after the drying, but at this moment aqueous in tealeaves
Measure low, tealeaves is dry, crisp, easily broken constantly with separator or other tealeaves occurring to hit in vibration processes repeatedly.
Invention content
The purpose of the present invention is to provide a kind of time preparation method for green tea reducing tealeaves fragmentation.
In order to achieve the above objectives, the technical scheme is that：Kind time preparation method for green tea, includes the following steps：
(1) it finishes, is finished using green-keeping machine, tealeaves volume is less than or equal to the 4/ of green-keeping machine inner cylinder cavity volume
5, the hot-air that temperature is 180~250 DEG C is passed through in inside tube inner chamber, until there is no green odours for tealeaves；
(2) it rubs for the first time, the tealeaves handled through step (1) is rubbed, first carry out rubbing for the first time, Zhi Daocha
Juice in leaf starts to leach；
(3) it rubs, the tealeaves handled through step (2) is rubbed for the second time after 10~20min, until tealeaves crimps
For strip；
(4) it detaches, shakes tealeaves, individual tea stalk in tealeaves is made to drop out, remove tea stalk；
(5) dry, the tealeaves handled through step (4) is dried using 60~100 DEG C of hot winds.
This programme has the beneficial effect that：
1, the separation that tea stalk is carried out after rubbing, shakes tealeaves, tea stalk can be made to drop out, at this time simultaneously because step
(2) when and step (3) is rubbed, the juice in tealeaves leaches, and tealeaves relatively moistens, so tealeaves is not easy fragmentation.
2, including twice it rubs, starts for the first time when rubbing, the juice in tealeaves does not leach, if it is larger to rub dynamics,
It is easy that tealeaves is made to fracture, to generate the smaller powder of granularity, but after rubbing for the first time, the juice in tealeaves leaches,
Tealeaves relatively moistens.After rubbing for the first time, the moisture in tealeaves is evenly distributed on tea under the osmotic pressure effect of tea cell
In leaf, so when rubbing for the second time, tealeaves will not fragmentation, it is possible to reduce the powder in the tealeaves being eventually fabricated.
Preferred embodiment one, is further improved as to base case, after the completion of step (1) water-removing, in inside tube inner chamber
It is passed through the air that temperature is not higher than 30 DEG C, after tealeaves temperature is not higher than 50 DEG C, then carries out the processing of step (2).Air can
To cool down to tealeaves, the temperature of tealeaves is made quickly to reduce, when rub for the first time, the temperature of tealeaves is relatively low, will not scald
Hinder worker.
Preferred embodiment two, is further improved as to base case, the drying of step (5) include it is dry for the first time and
Second dry, dry for the first time to be carried out using 60~80 DEG C of hot winds, and drying time is 30~50min；Second of dry use
80~100 DEG C of hot wind carries out, and drying time is 20~40min.After the completion of rubbing, tealeaves relatively moistens, dry for the first time to use
Hot wind to the humidity of tealeaves can be reduced after tea-drying；Second of dry hot blast temperature higher used, does tealeaves
Dry effect is more preferable, can accelerate drying efficiency, and tealeaves also need not keep higher temperature for a long time and lose fragrance.
Preferred embodiment three in step (1), is passed through temperature and is less than 30 DEG C as being further improved to preferred embodiment one
After air, after tealeaves temperature is reduced to 35 DEG C, then the processing of step (2) is carried out.After water-removing, air makes tealeaves temperature
It reduces, the temperature of tealeaves is slightly less than body temperature, will not scald worker.
Preferred embodiment four, as being further improved to preferred embodiment two, after second of step (5) is dry, to tealeaves into
Sector-style is cold, until tealeaves is reduced to room temperature.The cooling rate for accelerating tealeaves, shortens the cooling time of tealeaves, when avoiding tealeaves long
Between occur burnt fiery taste under the high temperature conditions, improve the flavour of tealeaves.
Preferred embodiment five is further improved as to preferred embodiment three or four, what step (1) and step (5) used
Hot wind is first dried hot wind before being contacted with tealeaves.Drying can remove the vapor in hot wind, avoid hot wind by the external world
Vapor is brought into interior tube inner chamber.
Description of the drawings
Fig. 1 is the structural schematic diagram of green-keeping machine used in the embodiment of the present invention.
Specific implementation mode
It is further described below by specific implementation mode：
Reference numeral in Figure of description includes：Rotating cylinder 1, shaft 11, rotate gear 12, material guide port 13, switch 14, bullet
Spring 15, heating pipe 17, motor 2, driving gear 21, electromagnet 3, inner cylinder 4, incubation cavity 41, heating member 42, is oriented to air inlet 16
Slot 43, exhaust pipe 45, Attraction block 46, falls stalk channel 47 at pushing block 44.
Embodiment 1
A kind of time preparation method for green tea, includes the following steps：
(1) it finishes, is finished using green-keeping machine, tealeaves volume is the 1/2 of the inner cylinder volume of green-keeping machine, to inner cylinder
The hot-air that interior intracavitary is passed through 180 DEG C finishes, until there is no green odours for tealeaves；Again 30 DEG C are passed through in inside tube inner chamber
Air cools down to tealeaves, until tealeaves temperature is 50 DEG C；
(2) it rubs for the first time, the tealeaves handled through step (1) is rubbed, first carry out rubbing for the first time, Zhi Daocha
Juice in leaf starts to leach；
(3) it rubs, the tealeaves handled through step (2) is rubbed for the second time after standing 10min, until tealeaves crimps
For strip；
(4) it detaches, hand picks up tealeaves, and shakes, and individual tea stalk in tealeaves is made to drop out, and the tea stalk dropped out is removed；
(5) drying, including dry for the first time and second of drying, dry for the first time to be carried out using 60 DEG C of hot wind, drying
Time is 50min；Second of dry hot wind for using 80 DEG C carries out, and drying time 40min is passed through hot wind before dry
It is dried in molecular sieve；Then air-cooled to tealeaves progress, until tealeaves temperature is reduced to room temperature.
Embodiment 2
Difference from Example 1 is：
(1) it finishes, tealeaves volume is the 2/3 of green-keeping machine inner cylinder volume, and 210 DEG C of hot-air is passed through in inside tube inner chamber
It finishes, until there is no green odours for tealeaves；30 DEG C of air is passed through in inside tube inner chamber again, is cooled down to tealeaves, directly
It it is 35 DEG C to tealeaves temperature；
(3) it rubs, time of repose 20min, then is rubbed for the second time.
(5) dry, dry for the first time to be carried out using 80 DEG C of hot wind, drying time 30min；Second of dry use
100 DEG C of hot wind carries out, drying time 20min.
Embodiment 3
Difference from Example 2 is：
(1) it finishes, tealeaves volume is the 4/5 of green-keeping machine inner cylinder volume, and 250 DEG C of hot-air is passed through in inside tube inner chamber
It finishes, until there is no green odours for tealeaves.
Comparative example 1 to 3, except do not have step (4) separation in addition to, remaining step respectively with embodiment 1 to 3 the step of it is identical, it is right
Ratio 1 to 3, increases screening step after the completion of drying steps, and when screening vibrates tealeaves, until tealeaves disperses, then removes in tealeaves
Tea stalk.
The green-keeping machine used in above-mentioned water-removing step is as shown in Figure 1, including rack (being not drawn into attached drawing), be each attached to machine
Motor 2, electromagnet 3 on frame, the rotating cylinder 1 being connect with gantry rotation and the water-removing mechanism in rotation, motor 2 drive rotating cylinder
1 rotation, rotating cylinder 1 are equipped with air inlet 16；The mechanism that finishes includes inner cylinder 4, several springs 15 and the switch that can be pressed by inner cylinder 4
14, spring 15 is located at 4 periphery of inner cylinder, and 15 both ends of spring are separately fixed on 1 inner wall of inner cylinder 4 and rotating cylinder, solid on 4 side wall of inner cylinder
Electromagnet 3 can be made to work after thering is Attraction block 46, switch 14 to be pressed surely；4 side wall of inner cylinder is equipped with cricoid incubation cavity 41, incubation cavity
It is marked with conduction oil of the boiling point higher than 280 DEG C in 41 and is fixed with heating member 42, and the unfilled incubation cavity of conduction oil 41；4 side of inner cylinder
Wall falls stalk channel 47 equipped with several through incubation cavity 41, and inner cylinder 4 and 1 side wall of rotating cylinder are equipped with closed material guide port 13, turn
The exhaust pipe 45 being connected to 4 inner cavity of inner cylinder equipped with one end in cylinder 1,45 other end of exhaust pipe run through rotating cylinder 1.
The specific connection relation of above-mentioned green-keeping machine is as follows：1 left and right ends of rotating cylinder are welded with shaft 11, shaft 11 and rotating cylinder 1
Coaxially, shaft 11 runs through rack, and is coupled by bearing with rack, so shaft 11 can be relative to gantry rotation.Left side
Key connection has rotate gear 12 in shaft 11, and being keyed on the output shaft of motor 2 has driving gear 21, driving gear 21 and rotation
Gear 12 engages, so motor 2 can drive rotating cylinder 1 to rotate.Material guide port 13 is externally provided with guide lid, guide lid and material guide port
13 screw-thread fits, so guide lid can close material guide port 13.Air inlet 16 is communicated with heating pipe 17, and heating pipe 17 is through a left side
The shaft 11 of side can be passed through hot gas by heating pipe 17 into rotating cylinder 1.
Inner cylinder 4 is connect by spring 15 with rotating cylinder 1, the spring line footpath of the spring 15 in the green-keeping machine that embodiment uses for
15mm, so spring 15 has larger intensity, so when rotating cylinder 1 rotates, inner cylinder 4 can also rotate.Attraction block 46 is located at 4 side of inner cylinder
On wall, the Attraction block 46 in the present embodiment is ferromagnetism block, and electromagnet 3 can adsorb Attraction block 46 when working.In incubation cavity 41
Conduction oil account for the 3/4 of 41 volume of incubation cavity, so there are air in incubation cavity 41, the conduction oil in the present embodiment is dibenzyl
Toluene, when inner cylinder 4 is rotated with rotating cylinder 1, since atmospheric density is less than conduction oil, therefore when inner cylinder rotates, conduction oil is with interior
Cylinder movement, air are squeezed by conduction oil, and conduction oil plays stirring action relative to air movement, air to conduction oil.
4 inner cavity left and right ends of inner cylinder are equipped with cricoid guide groove 43, and guide groove 43 is located at the outer of 4 inner wall end of inner cylinder
Week, inner cylinder 4 are equipped with pushing block 44 in the horizontal direction, and 44 left and right ends of pushing block are respectively protruding into two guide grooves 43, and inner cylinder 4 rotates
When, 44 end of pushing block is slided along guide groove 43, and pushing block 44 is slided relative to 4 inner wall of inner cylinder, will be attached on 4 inner wall of inner cylinder
Tealeaves scrapes.
45 left end of exhaust pipe runs through the right end of inner cylinder 4, and is glued with inner cylinder 4,45 right end of exhaust pipe through 1 right end of rotating cylinder and
The shaft 11 on right side, and stretched out from 11 right end of the shaft on right side, the gas in 4 inner cavity of inner cylinder can be discharged from exhaust pipe 45, this
The exhaust pipe 45 of embodiment is bellows, and exhaust pipe 45 can stretch, so not allowing easy fracture.
The fixing method of step (1) is as follows：
Before water-removing, heating member 42 is first opened, heating member 42 heats conduction oil, and heat conduction oil temperature is made to reach water-removing temperature
Degree, is then shut off heating member 42.Material guide port 13 is opened when water-removing, and tealeaves is put into 4 inner cavity of inner cylinder, material guide port is then closed
13, then motor 2 is opened, and inflated into rotating cylinder 1 by air inlet 16, so that the pressure in rotating cylinder 1 is increased, the heat in rotating cylinder 1 is empty
Gas enters from stalk channel 47 is fallen in 4 inner cavity of inner cylinder, finishes to tealeaves, while the pressure in 4 inner cavity of inner cylinder being made to increase, inner cavity
In gas from exhaust pipe be discharged.
Motor 2 is opened rear-guard turn cylinder 1 and is rotated, and the inner cylinder 4 in rotating cylinder 1 also rotates therewith, and inner cylinder 4 itself and
It is moved downward relative to rotating cylinder 1 under the weight effect of tealeaves, the spring 15 positioned at 4 lower section of inner cylinder is compressed, and 4 top of inner cylinder is located at
Spring 15 be stretched, after rotating cylinder 1 rotates, due to inner cylinder 4 and tealeaves weight direction always downward, so being compressed at this time
Change with the spring 15 of stretching, inner cylinder 4 constantly vibrates under the elastic force effect of spring 15, so inner cylinder 4 is rotated with rotating cylinder 1
During, inner cylinder 4 is vibrated also relative to rotating cylinder 1.When inner cylinder 4 rotates, pushing block 44 is under self gravitation effect along guide groove
43 slide downwards, at this time pushing block 44 relative to inner cylinder 4 slide, the tealeaves for being attached to 4 inner wall of inner cylinder is pushed away, tealeaves is avoided to block
Stalk channel 47 is fallen, ensures that tea stalk can be dropped out smoothly.
When tea amount in inner cylinder 4 is more, inner cylinder 4 increases the pressure of spring 15, and 15 compressed degree of spring increases, most
The elastic force bigger that inner cylinder 4 is subject to afterwards, the amplitude that inner cylinder 4 vibrates also increase therewith, and 4 Oscillation Amplitude of inner cylinder can be pressed open when larger
14 are closed, electromagnet 3 is made to work.The work of electromagnet 3 can attract Attraction block 46, and the setting of 3 bias of electromagnet is in inner cylinder 4 one
Side, under the magnetic force close to electromagnet 3, spring 15 deforms upon Attraction block 46, and Attraction block 46 turns to far with inner cylinder 4
When from 3 side of electromagnet, since Attraction block 46 increases at a distance from electromagnet 3, the magnetic force that Attraction block 46 is subject to reduces, inner cylinder 4
It is resetted under the elastic force effect of spring 15, it is possible to aggravate the vibration of inner cylinder 4.
When inner cylinder 4 constantly vibrates, the tealeaves in inner cylinder 4 is constantly moved relative to inner cylinder 4 under effect of inertia, the position of tealeaves
Continuous change is set, the vapor between tealeaves will not be blocked by tealeaves, can be as the gas in inner cylinder 4 is from exhaust pipe 45
Discharge.After step (2) finishes, material guide port 13 is opened, you can take out tealeaves.
The green-keeping machine that the present embodiment uses has the beneficial effect that：
1, when rotating cylinder 1 rotates inner cylinder 4 can vibrate, tealeaves can be made relative to inner cylinder 4 in 4 continuous vibration processes of inner cylinder
Movement plays the role of a stirring to tealeaves, and the vapor generated during tea green-keeping will not be hindered by tealeaves, can
To be discharged together from exhaust pipe 45 with the gas in inner cylinder 4, vapor will not be deposited in inner cylinder 4, so can be in inner cylinder 4
Lower humidity is kept, the moisture evaporation in tealeaves is promoted.
2, tealeaves is moved relative to inner cylinder 4, and the tea stalk in tealeaves can be fallen on from stalk channel 47 is fallen in rotating cylinder 1, thus with
Tealeaves detaches, it is possible to and tea stalk quantity in tealeaves is reduced, the workload of separating step is reduced, shortens the time needed for separation,
Improve the production efficiency of tealeaves.
3, heating member 42 can in advance heat conduction oil, and conduction oil can keep the temperature of 4 side wall of inner cylinder, avoid
The temperature of the tealeaves contacted with 4 side wall of inner cylinder reduces, to ensure the fixation effect of tealeaves.
Comparative example 4 to 6, in addition to step (1) is different from embodiment 1 to 3, remaining step is identical as embodiment 1 to 3 respectively,
The tea amount of comparative example 4 to 6 is identical as the tea amount of embodiment 1 to 3 respectively, and water-removing step is killed using traditional water-removing pot
Blueness, fixing temperature is respectively 180 DEG C, 210 DEG C and 250 DEG C, until there is no green odours for tealeaves；Use 30 DEG C of air to tea again
Leaf cools down, until tealeaves temperature is 50 DEG C.
After experiment, red stalk rate, root are calculated according to the tealeaves weight and the total weight of tealeaves that occur red stalk after water-removing
Broken tea rate is calculated according to the weight and the total weight of tealeaves of fannings in finished tea, and is recorded, experimental result is as follows：
As can be seen from the above experimental data, embodiment 1 to 3 and comparative example 1 to 3 are all made of green-keeping machine, and in tea amount
In the case of fixing temperature all same, comparative example 1 to 3 does not have separating step, but carries out again after the drying after rubbing
The screening of tea stalk, the broken tea rate of comparative example 1 to 3 are higher than the broken tea rate of embodiment 1 to 3, it was demonstrated that the separating step of embodiment 1 to 3
Effectively reduce tealeaves fragmentation.
Secondly, comparative example 4 to 6 is without selecting green-keeping machine to finish, but is finished using traditional water-removing pot, with
Comparative example 1 to 3 is compared, identical in tea amount and fixing temperature, the red stalk rate higher of comparative example 4 to 6, it was demonstrated that is implemented
The fixation effect of the water-removing step of example 1 to 3 is more preferable.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these should also be considered as the guarantor of the present invention
Range is protected, these all do not interfere with the effect and patent practicability that the present invention is implemented.The present invention omits the technology of description, shape
Shape, construction part are known technology.
Claims (6)
1. a kind of time preparation method for green tea, it is characterised in that：Include the following steps：
(1) it finishing, is finished using green-keeping machine, tealeaves volume is less than or equal to the 4/5 of green-keeping machine inner cylinder cavity volume, to
The hot-air that temperature is 180~250 DEG C is passed through in interior tube inner chamber, until there is no green odours for tealeaves；
(2) it rubs for the first time, the tealeaves handled through step (1) is rubbed, first carry out rubbing for the first time, until in tealeaves
Juice start to leach；
(3) it rubs, the tealeaves handled through step (2) is rubbed for the second time after 10~20min, until tealeaves curling is item
Shape；
(4) it detaches, shakes tealeaves, individual tea stalk in tealeaves is made to drop out, remove tea stalk；
(5) dry, the tealeaves handled through step (4) is dried using 60~100 DEG C of hot winds.
2. time preparation method for green tea according to claim 1, it is characterised in that：After the completion of the step (1) water-removing,
It is passed through the air that temperature is not higher than 30 DEG C in inside tube inner chamber, after tealeaves temperature is not higher than 50 DEG C, then carries out step (2)
Processing.
3. time preparation method for green tea according to claim 1, it is characterised in that：The drying of the step (5) includes the
Primary drying and second of drying, dry for the first time to be carried out using 60~80 DEG C of hot winds, drying time is 30~50min；Second
The secondary dry hot wind for using 80~100 DEG C carries out, and drying time is 20~40min.
4. time preparation method for green tea according to claim 2, it is characterised in that：In the step (1), it is passed through temperature
After air less than 30 DEG C, after tealeaves temperature is reduced to 35 DEG C, then the processing of step (2) is carried out.
5. time preparation method for green tea according to claim 3, it is characterised in that：Second of drying of the step (5)
Afterwards, air-cooled to tealeaves progress, until tealeaves is reduced to room temperature.
6. time preparation method for green tea according to claim 4 or 5, it is characterised in that：The heat that the step (5) uses
Wind is first dried hot wind before being contacted with tealeaves.
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