CN105941692A - Processing method of yuqing black tea - Google Patents
Processing method of yuqing black tea Download PDFInfo
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- CN105941692A CN105941692A CN201610528762.8A CN201610528762A CN105941692A CN 105941692 A CN105941692 A CN 105941692A CN 201610528762 A CN201610528762 A CN 201610528762A CN 105941692 A CN105941692 A CN 105941692A
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- leaf
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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
- A23F3/08—Oxidation; Fermentation
- A23F3/10—Fermentation with addition of microorganisms or enzymes
Abstract
The invention discloses a processing method of yuqing leaf black tea. The method comprises the following steps that aspergillus niger monospore bacterium suspension is inoculated onto a fermentation culture medium for culture, and then, filtrate is collected; gfresh leaves picked up in rainy seasons are put into the obtained filtrate for soaking treatment; then, deionized water is used for cleanly washing the filtrate on the fresh leaves for thin spreading treatment; after the thin spreading treatment is completed, green leaf rocking is performed for three times; after each time of green leaf rocking, rocked green leaves are immediately put into a 30-35 DEG C RH45-55 percent 13000-23000 Lux LED (light emitting diode) blue light illumination withering room for green leaf cooling; after the former twice green leaf rocking, the green leaf cooling time is 30 to 50 minutes, and the last green leaf cooling time is 20 to 30 minutes; the obtained tea leaves are sequentially subjected to rolling treatment, pile fermentation treatment, secondary rolling, rehydration and freeze drying treatment, and a finished product is obtained. The processing method is favorable for synthesis and expression of good aroma ingredients in the tea leaves. The obtained black tea has the advantages that the color and luster are black bloom; strips are heavy and solid; the tea water color is golden red, transparent and bright; the taste is sweet and pure; the leaf bottom is brilliant red.
Description
Technical field
The present invention relates to processing field of tea leaves, the processing method being specifically related to a kind of rain green grass or young crops black tea.
Background technology
Gather and process period spring tea, usually catch up with unbroken wet weather.In the overcast and rainy time, the dark brownish green of harvesting is referred to as " rainwater is blue or green ".At this moment,
Fresh leaf water content is many, and inclusions is relatively fewer；Under the weather premise of high humility, the moisture content doing Folium Isatidis is slow with dishevelled hair, thus shadow
Ring the carrying out of chemical change in leaf.And it is long to do the blue or green time, in leaf, material respiration consumption is big, as made not in time, does
" three days tea ", then easily cause " flood has " " green grass or young crops is grey to be had ", become tea bar rope light, and honorable dark green, flavour is thin not mature.Cause
This, will make " rainwater is blue or green " and extremely be difficult to.
Summary of the invention
For solving the problems referred to above, the processing method that the invention provides a kind of rain green grass or young crops black tea, contribute to good fragrance in Folium Camelliae sinensis
The synthesis of composition and expression, the black tea color and luster Wu Run, bar Suo Chongshi of gained, soup coloured gold be popular in bright, flavour is sweet and pure, Radix Phyllagathis fordii
Gorgeous.
For achieving the above object, the technical scheme that the present invention takes is:
The processing method of a kind of rain green grass or young crops black tea, comprises the steps:
S1, it is 1.0 × 10 by concentration-6Aspergillus niger monospore bacterial suspension inoculation on fermentation medium 25 DEG C cultivate 96-108h, use
Qualitative filter paper filters, and collects filtrate after having cultivated；
S2, select 1 bud 2 leaf or equal tenderness that the blue or green fresh leaf of rainwater of folder leaf is placed in the filtrate of step S1 gained, at 30 DEG C of immersions
Reason 30min；
After S3, immersion treatment complete, cleaning up the filtrate on fresh leaf with deionized water, carry out the process of thin stand, room temperature spreads in withering
Wither groove, and leaf-spreading thickness is 3-5cm, and 6-8 DEG C spreads 1h, middle turning 1-2 time；
S4, the process of thin stand carry out three rocking of green leaf, rotating speed 60-70r/s after terminating, the rocking of green leaf time is respectively 1min, 2min, 3min,
The most immediately rocking of green leaf leaf is put into after rocking of green leaf 30-35 DEG C, the withering of RH45-55%, 13000-23000Lux LED blue light illumination every time
Dry in air is carried out, dry in air 30-50 minute, last dry in air 20-30 minute after front twice rocking of green leaf in withering；
S5, the Folium Camelliae sinensis of step S4 gained being filled rub barrel, sky rubs 25min, the gentliest presses 25min, weight 30min, gently presses
15min, sky goes out tea after rubbing 5min, kneads time 100min altogether；
S6, the ground of selection cleaning, by wet for Folium Camelliae sinensis heap on the ground, surface covers wet cloth, when Folium Camelliae sinensis becomes yellowish-brown, saturating to light
Depending in Blue green and also transparent, when giving out distiller grains fragrance；
After Folium Camelliae sinensis is rubbed 7-9min after completing by S7, wet heap again, carry out rehydration, lyophilization processes, and obtains finished product.
Preferably, the parameter of described rehydration is: rehydration water content 35%, rehydration water temperature 16 DEG C, rehydration time 1.7h.
Preferably, the processing stage that described lyophilization including pre-freeze and processing stage distillation, the processing stage of pre-freeze, speed is selected
Freezing mode, pre-freezing temperature is 23 DEG C, pre-freeze time 7h；Distillation processing stage, sublimation temperature is-10.5 DEG C, and vacuum is
270pa, sublimation time 230min.
Preferably, in described step S6, wet stack height is 75-95cm, and temperature controls as 30-35 DEG C, and the wet heap time is 7-
9h, the water content after the wet heap of Folium Camelliae sinensis is 27-33%.
Preferably, the water content having rubbed rear Folium Camelliae sinensis in described step S7 again is 22-25%.
Preferably, described fermentation medium is prepared from by the raw material of following weight portion:
Cross vinegar 60-70 part of 20 mesh sieves, Magnesium sulfate heptahydrate 0.1-0.2 part, potassium acid sulfate 0.1-0.2 part, sodium chloride 0.1-0.3 part,
Ammonium chloride 4-6 part, sucrose 6-10 part, initial water content is 65%.
The method have the advantages that
By the immersion to fresh leaf of the aspergillus niger monospore filtrate, contribute to synthesis and the expression of good fragrance component in Folium Camelliae sinensis；By indigo plant
The irradiation of light and the regulation and control of interior temperature and humidity of withering, improve the Net Photosynthetic Rate of rainwater green light, withering leaf biochemistry product
Matter is more excellent, and raw tea sensory review's score is higher, not only accelerates and withers process at leaf processed, and promotes the formation of black tea superior quality；
By rehydration and the regulation and control of freeze drying process parameter, rainwater green grass or young crops Appearance color promotes notable, the black tea color and luster Wu Run of gained,
Bar Suo Chongshi, soup coloured gold be popular in bright, flavour is sweet and pure, Radix Phyllagathis fordii is gorgeous.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is further elaborated.
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In following example, the parameter of the rehydration used is: rehydration water content 35%, and rehydration water temperature 16 DEG C, during rehydration
Between 1.7h, the processing stage that the lyophilization used including pre-freeze and processing stage distillation, the processing stage of pre-freeze, select quick-freezing
Mode, pre-freezing temperature is 23 DEG C, pre-freeze time 7h；Distillation processing stage, sublimation temperature is-10.5 DEG C, and vacuum is
270pa, sublimation time 230min；The fermentation medium used is prepared from by the raw material of following weight portion: cross 20 mesh sieves
Vinegar 60-70 part, Magnesium sulfate heptahydrate 0.1-0.2 part, potassium acid sulfate 0.1-0.2 part, sodium chloride 0.1-0.3 part, ammonium chloride
4-6 part, sucrose 6-10 part, initial water content is 65%.
Embodiment 1
The processing method of a kind of rain green grass or young crops black tea, comprises the steps:
S1, it is 1.0 × 10 by concentration-6Aspergillus niger monospore bacterial suspension inoculation on fermentation medium 25 DEG C cultivate 96h, with qualitative
Filter paper filtering, collects filtrate after having cultivated；
S2, select 1 bud 2 leaf or equal tenderness that the blue or green fresh leaf of rainwater of folder leaf is placed in the filtrate of step S1 gained, at 30 DEG C of immersions
Reason 30min；
After S3, immersion treatment complete, cleaning up the filtrate on fresh leaf with deionized water, carry out the process of thin stand, room temperature spreads in withering
Wither groove, and leaf-spreading thickness is 3cm, and 6 DEG C spread 1h, middle turning 1-2 time；
S4, the process of thin stand carry out three rocking of green leaf, rotating speed 60r/s after terminating, the rocking of green leaf time is respectively 1min, 2min, 3min, often
The most immediately rocking of green leaf leaf is put into after secondary rocking of green leaf 30 DEG C, RH 45%, carry out between the withering of 13000Lux LED blue light illumination cool
Green grass or young crops, dry in air 50 minutes after front twice rocking of green leaf, last dry in air 30 minutes；
S5, the Folium Camelliae sinensis of step S4 gained being filled rub barrel, sky rubs 25min, the gentliest presses 25min, weight 30min, gently presses
15min, sky goes out tea after rubbing 5min, kneads time 100min altogether；
S6, the ground of selection cleaning, by wet for Folium Camelliae sinensis heap on the ground, surface covers wet cloth, when Folium Camelliae sinensis becomes yellowish-brown, saturating to light
Depending in Blue green and also transparent, when giving out distiller grains fragrance, wet stack height is 75cm, temperature control be 30 DEG C, wet heap
Time is 9h, and the water content after the wet heap of Folium Camelliae sinensis is 27-33%；
After Folium Camelliae sinensis is rubbed 7min after completing by S7, wet heap again, the water content having rubbed rear Folium Camelliae sinensis again is 22-25%, then carry out rehydration,
Lyophilization processes, and obtains finished product.
Embodiment 2
The processing method of a kind of rain green grass or young crops black tea, comprises the steps:
S1, it is 1.0 × 10 by concentration-6Aspergillus niger monospore bacterial suspension inoculation on fermentation medium 25 DEG C cultivate 108h, with qualitative
Filter paper filtering, collects filtrate after having cultivated；
S2, select 1 bud 2 leaf or equal tenderness that the blue or green fresh leaf of rainwater of folder leaf is placed in the filtrate of step S1 gained, at 30 DEG C of immersions
Reason 30min；
After S3, immersion treatment complete, cleaning up the filtrate on fresh leaf with deionized water, carry out the process of thin stand, room temperature spreads in withering
Wither groove, and leaf-spreading thickness is 5cm, and 8 DEG C spread 1h, middle turning 1-2 time；
S4, the process of thin stand carry out three rocking of green leaf, rotating speed 70r/s after terminating, the rocking of green leaf time is respectively 1min, 2min, 3min, often
The most immediately rocking of green leaf leaf is put into after secondary rocking of green leaf 35 DEG C, RH 55%, carry out between the withering of 23000Lux LED blue light illumination cool
Green grass or young crops, dry in air 30 minutes after front twice rocking of green leaf, last dry in air 20 minutes；
S5, the Folium Camelliae sinensis of step S4 gained being filled rub barrel, sky rubs 25min, the gentliest presses 25min, weight 30min, gently presses
15min, sky goes out tea after rubbing 5min, kneads time 100min altogether；
S6, the ground of selection cleaning, by wet for Folium Camelliae sinensis heap on the ground, surface covers wet cloth, when Folium Camelliae sinensis becomes yellowish-brown, saturating to light
Depending in Blue green and also transparent, when giving out distiller grains fragrance, wet stack height is 95cm, temperature control be 35 DEG C, wet heap
Time is 7h, and the water content after the wet heap of Folium Camelliae sinensis is 27-33%；
After Folium Camelliae sinensis is rubbed 9min after completing by S7, wet heap again, the water content having rubbed rear Folium Camelliae sinensis again is 22-25%, then carry out rehydration,
Lyophilization processes, and obtains finished product.
Embodiment 3
The processing method of a kind of rain green grass or young crops black tea, comprises the steps:
S1, it is 1.0 × 10 by concentration-6Aspergillus niger monospore bacterial suspension inoculation on fermentation medium 25 DEG C cultivate 102h, with qualitative
Filter paper filtering, collects filtrate after having cultivated；
S2, select 1 bud 2 leaf or equal tenderness that the blue or green fresh leaf of rainwater of folder leaf is placed in the filtrate of step S1 gained, at 30 DEG C of immersions
Reason 30min；
After S3, immersion treatment complete, cleaning up the filtrate on fresh leaf with deionized water, carry out the process of thin stand, room temperature spreads in withering
Wither groove, and leaf-spreading thickness is 4cm, and 7 DEG C spread 1h, middle turning 1-2 time；
S4, the process of thin stand carry out three rocking of green leaf, rotating speed 60-70r/s after terminating, the rocking of green leaf time is respectively 1min, 2min, 3min,
The most immediately rocking of green leaf leaf is put into after rocking of green leaf 32.5 DEG C every time, RH 50%, enters between the withering of 18000Lux LED blue light illumination
Row dry in air, dry in air 40 minutes after front twice rocking of green leaf, last dry in air 25 minutes；
S5, the Folium Camelliae sinensis of step S4 gained being filled rub barrel, sky rubs 25min, the gentliest presses 25min, weight 30min, gently presses
15min, sky goes out tea after rubbing 5min, kneads time 100min altogether；
S6, the ground of selection cleaning, by wet for Folium Camelliae sinensis heap on the ground, surface covers wet cloth, when Folium Camelliae sinensis becomes yellowish-brown, saturating to light
Depending in Blue green and also transparent, when giving out distiller grains fragrance, wet stack height is 85cm, temperature control be 32.5 DEG C, wet
The heap time is 8h, and the water content after the wet heap of Folium Camelliae sinensis is 30%；
After Folium Camelliae sinensis is rubbed 8min after completing by S7, wet heap again, the water content having rubbed rear Folium Camelliae sinensis again is 22-25%, then carry out rehydration,
Lyophilization processes, and obtains finished product.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. the processing method of a rain green grass or young crops black tea, it is characterised in that comprise the steps:
S1, it is 1.0 × 10 by concentration-6Aspergillus niger monospore bacterial suspension inoculation on fermentation medium 25 DEG C cultivate 96-108h, training
After having supported, filter with qualitative filter paper, collect filtrate；
S2, select 1 bud 2 leaf or equal tenderness that the blue or green fresh leaf of rainwater of folder leaf is placed in the filtrate of step S1 gained, at 30 DEG C of immersions
Reason 30min；
After S3, immersion treatment complete, cleaning up the filtrate on fresh leaf with deionized water, carry out the process of thin stand, room temperature spreads in withering
Wither groove, and leaf-spreading thickness is 3-5cm, and 6-8 DEG C spreads 1h, middle turning 1-2 time；
S4, the process of thin stand carry out three rocking of green leaf, rotating speed 60-70r/s after terminating, the rocking of green leaf time is respectively 1min, 2min, 3min,
The most immediately rocking of green leaf leaf is put into after rocking of green leaf 30-35 DEG C, the withering of RH45-55%, 13000-23000Lux LED blue light illumination every time
Dry in air is carried out, dry in air 30-50 minute, last dry in air 20-30 minute after front twice rocking of green leaf in withering；
S5, the Folium Camelliae sinensis of step S4 gained being filled rub barrel, sky rubs 25min, the gentliest presses 25min, weight 30min, gently presses
15min, sky goes out tea after rubbing 5min, kneads time 100min altogether；
S6, the ground of selection cleaning, by wet for Folium Camelliae sinensis heap on the ground, surface covers wet cloth, when Folium Camelliae sinensis becomes yellowish-brown, saturating to light
Depending in Blue green and also transparent, when giving out distiller grains fragrance；
After Folium Camelliae sinensis is rubbed 7-9min after completing by S7, wet heap again, carry out rehydration, lyophilization processes, and obtains finished product.
The processing method of a kind of rain green grass or young crops black tea the most according to claim 1, it is characterised in that the parameter of described rehydration is: multiple
Water water content 35%, rehydration water temperature 16 DEG C, rehydration time 1.7h.
The processing method of a kind of rain green grass or young crops black tea the most according to claim 1, it is characterised in that described lyophilization includes pre-freeze
Processing stage and distillation processing stage, the processing stage of pre-freeze, select quick-freezing mode, pre-freezing temperature is 23 DEG C, pre-freeze time 7h；
Distillation processing stage, sublimation temperature is-10.5 DEG C, and vacuum is 270pa, sublimation time 230min.
The processing method of a kind of rain green grass or young crops black tea the most according to claim 1, it is characterised in that wet stack height in described step S6
For 75-95cm, temperature controls as 30-35 DEG C, and the wet heap time is 7-9h, and the water content after the wet heap of Folium Camelliae sinensis is 27-33%.
The processing method of a kind of rain green grass or young crops black tea the most according to claim 1, it is characterised in that rubbed again in described step S7
The water content of rear Folium Camelliae sinensis is 22-25%.
The processing method of a kind of rain green grass or young crops black tea the most according to claim 1, it is characterised in that described fermentation medium is by following
The raw material of weight portion is prepared from:
Cross vinegar 60-70 part of 20 mesh sieves, Magnesium sulfate heptahydrate 0.1-0.2 part, potassium acid sulfate 0.1-0.2 part, sodium chloride 0.1-0.3 part,
Ammonium chloride 4-6 part, sucrose 6-10 part, initial water content is 65%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107624902A (en) * | 2017-10-17 | 2018-01-26 | 湖南望城乌山贡茶业有限公司 | It is a kind of that the method for spending fragrant and sweet congou tea is prepared using Summer-autumn tea |
| CN107668698A (en) * | 2017-09-29 | 2018-02-09 | 西藏青稞麦绿素生物科技有限公司 | A kind of preparation method of barley green |
| CN111642599A (en) * | 2020-04-30 | 2020-09-11 | 贵州省亚热带作物研究所 | Macadamia nut leaf tea and preparation method thereof |
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