CN106306185B - Golden flower white tea and preparation method thereof - Google Patents
Golden flower white tea and preparation method thereof Download PDFInfo
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Abstract
The invention provides a golden flower white tea and a preparation method thereof, and the preparation method specifically comprises the following steps: withering and rolling tea tree pruned branches and leaves, adding the tea tree pruned branches and leaves into a fixed column for fermentation treatment, then inoculating eurotium cristatum into the fixed column for flowering treatment, eluting the fixed column after flowering, performing centrifugal treatment, drying the centrifuged precipitate at low temperature to prepare golden flower powder, and finally preparing the finished white tea and the golden flower powder into a small square cake to obtain the golden flower white tea. The technology has the advantages that the probiotic components of eurotium cristatum and the pharmacological effects of the white tea can be combined in a superposition mode, meanwhile, the black tea beverage processing stock solution can be produced, the utilization rate of pruning branches and leaves in a tea garden is greatly improved, and waste materials are changed into valuable materials. The variety of tea products is expanded, the technological content of the products is improved, and the economic value of the products is improved while the health-care effect of the white tea is improved mainly through technical innovation.
Description
Technical Field
The invention belongs to the field of tea processing, and particularly relates to golden flower white tea and a preparation method thereof.
Background
The fungus is a golden closed capsule shell of eurotium cristatum, is similar to aglaia odorata, is golden and gorgeous in color, can improve the appearance characteristics of the brick tea through flowering, and more importantly can secrete various beneficial physiological active substances such as polysaccharide, statins and the like, and can regulate the blood fat and intestines and stomach of a human body. The Eurotium cristatum is widely distributed in nature and can grow and reproduce as long as a proper environmental condition exists, Cai Zhen ' an and the like (2010) have proved through experiments that the Eurotium cristatum has no special requirements on host nutrition but has strict requirements on the temperature and humidity of the environment, and the cultivation experiment of the Eurotium cristatum of Wenyongying (1986) also leads the conclusion that the optimal temperature and humidity for the growth of the Eurotium cristatum are respectively 28 ℃ and 75 percent, the actual large-scale production is slightly different, the ' flowering ' temperature of a common brick is preferably 30 ℃, and the humidity is preferably 80-85 percent.
The solid fermentation process (application number: 201210055178.7) of the golden flower white tea discloses a technology for planting golden flower bacteria in the white tea, but the flowering process of the patent is completed in 5-7 time with the water content of the tea kept between 15% and 100%, the flowering temperature being 25-32 ℃, the humidity being 70-86%, which is paradoxical. The white tea is light fermented tea, the conditions of the process completely meet the fermentation conditions of the fully fermented tea, and the product after fermentation cannot be calculated as the white tea at all.
At present, only black tea is available in tea products carrying golden flower tea products which can be produced in large scale in batch, golden flower products of other tea products are difficult to reach the large scale production level, and white tea in six kinds of tea products is distinguished by unique pharmacological effects of resisting oxidation, regulating immunity, reducing blood sugar, resisting and preventing cancers, resisting mutation, resisting bacteria, resisting fatigue and the like, so that the golden flower white tea product is researched and developed, and the advantages of eurotium cristatum and the white tea can be combined into a whole.
Disclosure of Invention
The invention aims to provide the golden flower white tea and the preparation method thereof, and the preparation method of the golden flower white tea has the advantages that not only can the probiotic components of eurotium cristatum and the pharmacological effects of the white tea be superposed and combined, but also the black tea beverage processing stock solution can be produced, so that the utilization rate of pruning branches and leaves in a tea garden is greatly improved, and the waste is changed into valuable. The variety of tea products is expanded, the technological content of the products is improved, and the economic value of the products is improved while the health-care effect of the white tea is improved mainly through technical innovation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of golden flower white tea comprises the following steps: withering and rolling tea tree pruned branches and leaves, adding the tea tree pruned branches and leaves into a fixed column for fermentation treatment, then inoculating eurotium cristatum into the fixed column for flowering treatment, eluting the fixed column after flowering, performing centrifugal treatment, drying the centrifuged precipitate at low temperature to prepare golden flower powder, and finally preparing the finished white tea and the golden flower powder into a small square cake to obtain the golden flower white tea.
The method specifically comprises the following steps:
(1) processing and upper column of packing
Withering the pruned branches and leaves of the tea trees according to the processing technology of black tea, controlling the weight reduction rate to be 40-45wt%, rolling to prepare a filler, then adding the filler into a fixed column, respectively adjusting the temperature and the humidity in the fixed column to 23-29 ℃ and 76-94wt% of the temperature and the humidity in the fixed column, promoting the filler to ferment according to the parameters of the black tea manufacturing technology, wherein the fermentation time is 4-6h, and 200 meshes of gauze or gauze is selected as the peripheral material of the fixed column to manufacture the tea tree pruned branches and leaves;
(2) separation and activation culture of eurotium cristatum
Selecting yellow cyst shell from Fuzhuan tea with sterile inoculating needle, inoculating to Cnidet medium, culturing at 30 deg.C, and inoculating to Eurotium cristatumPreliminary study on fermented Fuzhuan tea [ J]Chinese food and nutrition, 2011,17 (7): 30-33.) of the strain and made into 10-3Transferring the diluted spore suspension into an improved CZG culture medium with the pH of 6.3, carrying out constant-temperature shaking culture for 96h at the temperature of 30 ℃ and the speed of 150r/min, centrifuging the cultured bacterial liquid, removing the culture medium under the aseptic condition, washing with sterile water for 3 times, and fixing the volume for later use;
(3) column filling hair growing flower
Pouring the cultured strain diluent into a fixed column, and adjusting the temperature and humidity parameters in the column as follows: the temperature is 30 ℃, the humidity is 80-85wt%, and the flowering lasts 20-25 days;
(4) elution and preparation of black tea beverage stock solution
Taking down the fixed column after the flowering, putting the fixed column into a sterile ultrapure water elution tank, oscillating to finish liquid chromatography elution, centrifuging the eluent, and concentrating the centrifuged supernatant to obtain a black tea beverage stock solution;
(5) preparation of golden flower powder of eurotium cristatum
Conveying the centrifugal precipitate in the step (4) into a vacuum drying device for low-temperature drying to prepare golden flower powder;
(6) processing of white tea blank
Picking a bud I, a bud II and a bud I as raw materials, and performing primary withering, screen splicing, secondary withering, gross fire and sufficient fire, wherein the withering method is indoor natural withering, and the total withering time is 48-60 h; the gross fire temperature is 110 ℃, and the time is 10 min; the temperature of the foot fire is 70 deg.C, and the time is 40 min;
(7) processing of golden flower white tea
Adding clear water into white tea blank until the water content is 25wt%, steaming with water vapor for 8-10s, pouring into a small square grid grinding tool, uniformly scattering the golden flower powder according to the weight ratio of 1:0.1 of the white tea blank to the golden flower powder, and pressing into 5 x 3 cm under a 10t hydraulic press3The square small square cakes are packaged by tissue paper and put into an oven to be baked by low temperature and slow fire until the cakes are completely dried, and the golden flower white tea is obtained.
A golden flower white tea prepared by the preparation method of the golden flower white tea.
The invention has the following remarkable advantages: 1) the probiotic components of eurotium cristatum and the pharmacological effects of the white tea can be combined in a superposition manner, and meanwhile, the black tea beverage processing stock solution can be produced, so that the utilization rate of pruning branches and leaves in a tea garden is greatly improved, and waste is turned into wealth. The variety of tea products is expanded, the technological content of the products is improved, and the economic value of the products is improved while the health-care effect of the white tea is improved mainly through technical innovation.
2) The black tea is selected to bloom, on one hand, the blooming effect of the white tea is not as luxuriant as the black tea and the golden flower, and on the other hand, the preparation process of the black tea can be more extensive compared with the white tea, so that the rough processing is effectively separated from the refining processing links of the white tea and even the golden flower white tea, the quality of the finished white tea is ensured to the maximum extent, and the eluent in the process product is used as the raw material for processing the black tea beverage, so that the excessive waste of cutting off branches and leaves when shaping and trimming are carried out for 3-4 times in a tea garden every year can be effectively solved.
Detailed Description
In order to make the present invention more comprehensible, the technical solutions of the present invention are further described below with reference to specific embodiments, but the present invention is not limited thereto.
Example 1
A preparation method of golden flower white tea specifically comprises the following steps:
(1) processing and upper column of packing
Withering the pruned branches and leaves of the tea trees according to the processing technology of black tea, controlling the weight reduction rate at 40wt%, rolling to prepare a filler, then adding the filler into a fixed column, respectively adjusting the temperature and the humidity in the fixed column to 23 ℃ and 76wt% levels, promoting the filler to ferment according to the black tea manufacturing technological parameters, wherein the fermentation time is 4h, and 200-mesh gauze or gauze is selected as the peripheral material of the fixed column to manufacture the tea tree pruned branches and leaves;
(2) separation and activation culture of eurotium cristatum
Selecting yellow cyst shell of Fuzhuan tea with sterile inoculating needle, inoculating to Chaochenji culture medium, culturing at 30 deg.C, purifying by Sufeng method (2011), and making into 10-3Transferring the diluted spore suspension into an improved CZG culture medium with the pH of 6.3, carrying out constant-temperature shaking culture for 96h at the temperature of 30 ℃ and the speed of 150r/min, centrifuging the cultured bacterial liquid, removing the culture medium under the aseptic condition, washing with sterile water for 3 times, and fixing the volume for later use;
(3) column filling hair growing flower
Pouring the cultured strain diluent into a fixed column, and adjusting the temperature and humidity parameters in the column as follows: the temperature is 30 ℃, the humidity is 80wt%, and the flowering lasts 20 days;
(4) elution and preparation of black tea beverage stock solution
Taking down the fixed column after the flowering, putting the fixed column into a sterile ultrapure water elution tank, oscillating to finish liquid chromatography elution, centrifuging the eluent, and concentrating the centrifuged supernatant to obtain a black tea beverage stock solution;
(5) preparation of golden flower powder of eurotium cristatum
Conveying the centrifugal precipitate in the step (4) into a vacuum drying device for low-temperature drying to prepare golden flower powder;
(6) processing of white tea blank
Picking a bud and a leaf as raw materials, and carrying out operation by adopting the procedures of primary withering, screen splicing, secondary withering, gross fire and full fire, wherein the withering method is indoor natural withering, and the total withering time is 48 h; the gross fire temperature is 110 ℃, and the time is 10 min; the temperature of the foot fire is 70 deg.C, and the time is 40 min;
(7) processing of golden flower white tea
Adding clear water into white tea blank until the water content is 25wt%, steaming with water vapor for 8s, pouring into a small square grid grinding tool, uniformly scattering the golden flower powder according to the weight ratio of 1:0.1 of the white tea blank to the golden flower powder, and pressing into 5 x 3 cm under a 10t hydraulic press3The square small square cakes are packaged by tissue paper and put into an oven to be baked by low temperature and slow fire until the cakes are completely dried, and the golden flower white tea is obtained.
Example 2
A preparation method of golden flower white tea specifically comprises the following steps:
(1) processing and upper column of packing
Withering the pruned branches and leaves of the tea trees according to the processing technology of black tea, controlling the weight reduction rate at 43wt%, rolling to prepare a filler, then adding the filler into a fixed column, respectively adjusting the temperature and the humidity in the fixed column to 26 ℃ and 85wt% levels, promoting the filler to ferment according to the black tea manufacturing technological parameters, wherein the fermentation time is 5 hours, and 200-mesh gauze or gauze is selected as the peripheral material of the fixed column to manufacture the tea tree pruned branches and leaves;
(2) separation and activation culture of eurotium cristatum
Selecting yellow cyst shell of Fuzhuan tea with sterile inoculating needle, inoculating to Chaochenji culture medium, culturing at 30 deg.C, purifying by Sufeng method (2011), and making into 10-3Transferring the diluted spore suspension into an improved CZG culture medium with the pH of 6.3, carrying out constant-temperature shaking culture for 96h at the temperature of 30 ℃ and the speed of 150r/min, centrifuging the cultured bacterial liquid, removing the culture medium under the aseptic condition, washing with sterile water for 3 times, and fixing the volume for later use;
(3) column filling hair growing flower
Pouring the cultured strain diluent into a fixed column, and adjusting the temperature and humidity parameters in the column as follows: the temperature is 30 ℃, the humidity is 82wt%, and the flower grows for 23 days;
(4) elution and preparation of black tea beverage stock solution
Taking down the fixed column after the flowering, putting the fixed column into a sterile ultrapure water elution tank, oscillating to finish liquid chromatography elution, centrifuging the eluent, and concentrating the centrifuged supernatant to obtain a black tea beverage stock solution;
(5) preparation of golden flower powder of eurotium cristatum
Conveying the centrifugal precipitate in the step (4) into a vacuum drying device for low-temperature drying to prepare golden flower powder;
(6) processing of white tea blank
Picking one bud and two leaves as raw materials, and operating by adopting the procedures of primary withering, screen splicing, secondary withering, gross fire and full fire, wherein the withering method is indoor natural withering, and the total withering time is 55 h; the gross fire temperature is 110 ℃, and the time is 10 min; the temperature of the foot fire is 70 deg.C, and the time is 40 min;
(7) processing of golden flower white tea
Adding clear water into white tea blank until the water content is 25wt%, steaming with water vapor for 9s, pouring into a small square grid grinding tool, uniformly scattering the golden flower powder according to the weight ratio of 1:0.1 of the white tea blank to the golden flower powder, and pressing into 5 x 3 cm under a 10t hydraulic press3The square small square cakes are packaged by tissue paper and put into an oven to be baked by low temperature and slow fire until the cakes are completely dried, and the golden flower white tea is obtained.
Example 3
A preparation method of golden flower white tea specifically comprises the following steps:
(1) processing and upper column of packing
Withering the pruned branches and leaves of the tea trees according to the processing technology of black tea, controlling the weight reduction rate at 45wt%, rolling to prepare a filler, then adding the filler into a fixed column, respectively adjusting the temperature and the humidity in the fixed column to 29 ℃ and 94wt% levels, promoting the filler to ferment according to the black tea manufacturing technological parameters, wherein the fermentation time is 6 hours, and 200-mesh gauze or gauze is selected as the peripheral material of the fixed column to manufacture the tea tree pruned branches and leaves;
(2) separation and activation culture of eurotium cristatum
Selecting yellow cyst shell of Fuzhuan tea with sterile inoculating needle, inoculating to Chaochenji culture medium, culturing at 30 deg.C, purifying by Sufeng method (2011), and making into 10-3Transferring the diluted spore suspension into an improved CZG culture medium with the pH of 6.3, carrying out constant-temperature shaking culture for 96h at the temperature of 30 ℃ and the speed of 150r/min, centrifuging the cultured bacterial liquid, removing the culture medium under the aseptic condition, washing with sterile water for 3 times, and fixing the volume for later use;
(3) column filling hair growing flower
Pouring the cultured strain diluent into a fixed column, and adjusting the temperature and humidity parameters in the column as follows: the temperature is 30 ℃, the humidity is 85wt%, and the flowering lasts 25 days;
(4) elution and preparation of black tea beverage stock solution
Taking down the fixed column after the flowering, putting the fixed column into a sterile ultrapure water elution tank, oscillating to finish liquid chromatography elution, centrifuging the eluent, and concentrating the centrifuged supernatant to obtain a black tea beverage stock solution;
(5) preparation of golden flower powder of eurotium cristatum
Conveying the centrifugal precipitate in the step (4) into a vacuum drying device for low-temperature drying to prepare golden flower powder;
(6) processing of white tea blank
Picking single buds as raw materials, and operating by adopting the procedures of primary withering, screen splicing, secondary withering, gross fire and full fire, wherein the withering method is indoor natural withering, and the total withering time is 60 hours; the gross fire temperature is 110 ℃, and the time is 10 min; the temperature of the foot fire is 70 deg.C, and the time is 40 min;
(7) processing of golden flower white tea
Adding clear water into white tea blank until the water content is 25wt%, steaming with water vapor for 10s, pouring into a small square grid grinding tool, uniformly scattering the golden flower powder according to the weight ratio of 1:0.1 of the white tea blank to the golden flower powder, and pressing into 5 x 3 cm under a 10t hydraulic press3The square small square cakes are packaged by tissue paper and put into an oven to be baked by low temperature and slow fire until the cakes are completely dried, and the golden flower white tea is obtained.
Experiment of flowering
The purified Eurotium cristatum was inoculated into white tea and black tea, respectively, and allowed to bloom for 20 days at a temperature of 30 ℃ and a humidity of 80wt%, with the results shown in Table 1.
TABLE 1 sensory evaluation of bloom of white and black teas
As can be seen from Table 1, the white tea has less blooming effect than the black tea, golden flower.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (2)
1. The preparation method of the golden flower white tea is characterized by comprising the following steps:
(1) processing and upper column of packing
Withering the pruned branches and leaves of the tea trees according to the processing technology of black tea, controlling the weight reduction rate to be 40-45wt%, rolling to prepare a filler, then adding the filler into a fixed column, respectively adjusting the temperature and the humidity in the fixed column to 23-29 ℃ and 76-94wt% of the temperature and the humidity in the fixed column, promoting the filler to ferment according to the parameters of the black tea manufacturing technology, wherein the fermentation time is 4-6h, and 200 meshes of gauze or gauze is selected as the peripheral material of the fixed column to manufacture the tea tree pruned branches and leaves;
(2) separation and activation culture of eurotium cristatum
Selecting yellow closed capsule shell of Fuzhuan tea with sterile inoculating needle, inoculating to Chao's culture medium, culturing at 30 deg.C, purifying, and making into 10-3Transferring the diluted spore suspension into an improved CZG culture medium with the pH of 6.3, carrying out constant-temperature shaking culture for 96h at the temperature of 30 ℃ and the speed of 150r/min, centrifuging the cultured bacterial liquid, removing the culture medium under the aseptic condition, washing with sterile water for 3 times, and fixing the volume for later use;
(3) column filling hair growing flower
Pouring the cultured strain diluent into a fixed column, and adjusting the temperature and humidity parameters in the column as follows: the temperature is 30 ℃, the humidity is 80-85wt%, and the flowering lasts 20-25 days;
(4) elution and preparation of black tea beverage stock solution
Taking down the fixed column after the flowering, putting the fixed column into a sterile ultrapure water elution tank, oscillating to finish liquid chromatography elution, centrifuging the eluent, and concentrating the centrifuged supernatant to obtain a black tea beverage stock solution;
(5) preparation of golden flower powder of eurotium cristatum
Conveying the centrifugal precipitate in the step (4) into a vacuum drying device for low-temperature drying to prepare golden flower powder;
(6) processing of white tea blank
Picking a bud I, a bud II and a bud I as raw materials, and performing primary withering, screen splicing, secondary withering, gross fire and sufficient fire, wherein the withering method is indoor natural withering, and the total withering time is 48-60 h; the gross fire temperature is 110 ℃, and the time is 10 min; the temperature of the foot fire is 70 deg.C, and the time is 40 min;
(7) processing of golden flower white tea
Adding clear water to white tea blank until water content reaches 25wt%, and adding vaporSteaming for 8-10s, pouring into a small square lattice grinding tool, uniformly scattering the golden flower powder according to the weight ratio of 1:0.1 of white tea blank to golden flower powder, and pressing into 5 × 5 × 3 cm under a 10t hydraulic press3The square small square cakes are packaged by tissue paper and put into an oven to be baked by low temperature and slow fire until the cakes are completely dried, and the golden flower white tea is obtained.
2. A Camellia chrysantha white tea prepared by the method of claim 1.
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| CN106922905A (en) * | 2017-04-13 | 2017-07-07 | 渤海大学 | A kind of golden flower fermentations dogbane tea and preparation method thereof |
| CN109953143A (en) * | 2019-05-08 | 2019-07-02 | 西咸新区茯茶镇茶业有限公司 | A kind of Fu tea processing method of moonlight white tea |
| CN111449153B (en) * | 2020-03-24 | 2023-05-09 | 湖南龙灿生态农业股份有限公司 | Tea beverage and preparation process thereof |
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