CN112715702A - Method for processing cinnamon black tea from fresh cinnamon leaves - Google Patents
Method for processing cinnamon black tea from fresh cinnamon leaves Download PDFInfo
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Abstract
The invention provides a method for processing cinnamon black tea by using fresh leaves of cinnamon, which belongs to the technical field of food processing. The invention solves the problems of heavy green flavor of cinnamon leaves and low fragrance, astringent taste, low quality and low selling price of black tea products processed by fresh tea trees planted in Guangxi summer large-leaf groups. The invention improves the quality and the selling price of the tea and the economic benefit of tea enterprises.
Description
Technical Field
The invention belongs to the technical field of food processing, and particularly relates to a method for processing cinnamon-flavor black tea by using fresh cinnamon leaves.
Background
The cinnamon trees belong to medium-sized large trees, are mainly distributed in tropical and subtropical regions such as Guangxi, Yunnan and the like in China, and mainly grow in evergreen broad-leaved forests with the largest number of Guangxi. The cinnamon leaves are leaves of cinnamon, are rectangular round to nearly acicular, are 8-20 cm long, are 4-5.5 cm wide, are pointed at the tip, are blunt at the base, are all marginal, are brownish yellow or dark yellow on the upper surface, are lustrous, are obviously concave in the middle and side veins, are light brown or brownish brown on the lower surface, and are sparse and soft. The petiole is thick and 1-2 cm long, is leather and is easy to break. Has special fragrance, slightly pungent and spicy taste, and thick leaf stalk.
The cinnamon leaf has the effects of tonifying deficiency, warming middle-jiao to dispel cold, and relieving exterior syndrome to induce sweating, and can be used for treating cold, headache, fever, nasal obstruction, watery nasal discharge and other symptoms caused by common cold and exogenous pathogenic factors. At present, the collection and processing method of cinnamon leaves is to pick the cinnamon leaves incidentally when the cinnamon is collected in autumn, dry in the shade or clean and fresh. The food is prepared by decocting folium Cinnamomi in water or decoction, and stewing folium Cinnamomi and meat to strengthen spleen and stomach and relieve cold hands and feet in cold days. Besides eating, the cinnamon leaves can also be used externally, and the cinnamon leaves can be boiled in water and soaked in feet to help sleep. In the existing method for eating the cinnamon leaves, fresh leaves are strongly drunk when being boiled with water directly, and the cinnamon leaves dried in the shade are easily mildewed and influence the taste.
The Yunnan large-leaf tea tree has the characteristics of strong growth vigor, early germination period, long picking period, plump bud leaves, rich contents of contents, higher content of tea polyphenol in leaves and the like, so that the Yunnan large-leaf tea tree is a tea tree variety which is widely planted. However, in summer of Yunnan large-leaf tea trees planted in Guangxi, the fresh leaves of the tea trees are processed into black tea products, so that the black tea products have low fragrance, astringent taste, low quality and low selling price, and the economic benefit of tea farmers is seriously reduced.
Chinese invention patent with publication number CN105533064A discloses a cinnamon leaf tea and a preparation method thereof, a method of deactivating enzyme, kneading and then adopting lactic acid bacteria leaven and deep fermentation is adopted, thereby overcoming the bitter taste of cinnamon leaves and increasing the special aroma of tea. However, the fermentation time is long, the special aroma and taste of the tea leaves are lost, and even sour and rancid taste is generated.
Therefore, a new processing technology needs to be researched, which can not only fully utilize tea tree resources in summer, but also obtain tea products with excellent quality and taste.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for processing cinnamon black tea by using fresh cinnamon leaves, and the processed cinnamon black tea has unique fragrance, red and bright liquor color, sweet taste and natural cinnamon fragrance. The invention improves the quality and the selling price of the tea and the economic benefit of tea enterprises.
A method for processing cinnamon black tea by using fresh cinnamon leaves comprises the following steps:
(1) picking raw materials: picking tender fresh leaves of cinnamon and fresh leaves of Yunnan big-leaf tea tree varieties respectively;
(2) withering: naturally withering the tender fresh leaves of the cinnamon tree and the fresh leaves of the Yunnan large-leaf tea tree in the step (1) indoors to obtain withered fresh cinnamon leaves and withered fresh tea leaves;
(3) deactivating enzyme of fresh cinnamon leaves: deactivating enzyme of the withered fresh cinnamon leaves in the step (2) to obtain deactivated cinnamon tree leaves for later use;
(4) mixing and twisting: immediately putting the withered fresh tea leaves in the step (2) into the deactivated leaves of the cinnamon trees in the step (3), and mixing and rolling according to the weight ratio of 8-10:1 to obtain mixed and rolled leaves;
(5) aerobic fermentation: fermenting the mixed and twisted leaves in the step (4) for 3-4 hours, and spraying cinnamon bark juice extracting solution to the mixed and twisted leaves at an interval of 25-30 minutes in the fermentation process while stirring until the fermentation is finished to obtain fermented leaves for later use;
(6) quick gross fire: putting the fermented leaves obtained in the step (5) into a dryer, carrying out gross fire for 15-20 minutes, controlling the temperature of the gross fire to be 85-90 ℃, and naturally cooling to normal temperature after the gross fire is finished to obtain tea leaves after the gross fire;
(7) and (3) full fire: drying the tea leaves subjected to the gross fire in the step (6) for 110-120 minutes with the full fire temperature controlled at 70-80 ℃ and the water content controlled below 7%, cooling to normal temperature, and sealing and standing for 5-7 days to obtain the raw tea of the osmanthus-flavored black tea;
(8) and (3) fragrance extraction: carrying out aroma improvement on the raw tea obtained in the step (7) for 55-60 minutes, controlling the aroma improving temperature to be 95-100 ℃, and obtaining the dry tea with the moisture content below 5% after aroma improvement;
(9) screening: and (4) screening the tea leaves and the cinnamon leaves in the dry tea in the step (8), and removing the cinnamon leaves to obtain the tea leaves, namely the cinnamon-flavor black tea.
Furthermore, the picked fresh leaves of the Yunnan large-leaf tea tree variety are fresh leaves with one bud and two leaves with tenderness.
Further, the fresh leaves of the cinnamon tree in the step (1) are mature tender fresh leaves. The cinnamon leaves are broken into small pieces in the subsequent rolling processing process, so that the fragrance, branches and leaves of the cinnamon leaves can be more quickly leached, and the processing efficiency is improved.
Further, the technical key points of withering the tender and fresh leaves of the cinnamon tree are as follows: spreading tender and fresh leaves of the cinnamon tree on a dustpan with the thickness of 2-3 cm, wherein the withering water loss rate is 30-40%, and the cinnamon tree is withered until the color is changed from emerald green to yellow green;
the withering of the fresh leaves of the Yunnan large-leaf tea trees is as follows: spreading the fresh leaves of Yunnan large-leaf tea trees on a dustpan with the thickness of 1-2 cm, wherein the withering water loss rate is 60-62%, the fresh leaves are withered until the color of the fresh leaves is changed from dark green to dark green, and the withered leaves are soft, are held into a ball by hand, are not easy to scatter by hand and have continuous tender stems.
Further, the water-removing is carried out by adopting a liquefying roller water-removing machine, the water-removing temperature is 220 ℃ and 250 ℃, and the water-removing time is 4-6 minutes.
Further, the kneading is carried out for 15-20 minutes in an empty manner, then the pressing and kneading are carried out for 12-15 minutes, and finally the kneading is carried out for 10-15 minutes in an empty manner.
Further, controlling the leaf temperature in the fermentation to be 30-32 ℃.
Further, the preparation method of the cinnamon bark juice extracting solution comprises the following steps: taking cinnamon as a raw material, crushing cinnamon bark into granules, and mixing the cinnamon bark granules with water according to a mass ratio of 1: 4-5, adding water into the cinnamon bark particles, boiling with slow fire for 1.5-2 hours, filtering dregs, and cooling to obtain the cinnamon bark juice extracting solution.
Further, the amount of the cinnamon bark juice extracting solution sprayed each time is 20-40mL/kg of mixed twisted leaves.
The invention also discloses cinnamon black tea which is prepared by adopting the method for processing cinnamon black tea by using the fresh cinnamon leaves.
The invention has the following beneficial effects:
1. the invention aims at the problems of heavy green flavor of cinnamon leaves and low fragrance, astringent taste, low quality and low selling price of black tea products processed by fresh tea trees of large-leaf summer group species planted in Guangxi, and the invention improves the quality of the invention by more than 2 grades compared with the quality of the summer large-leaf black tea by adopting a novel processing method according to a specific proportion of the fresh tea trees and the fresh cinnamon leaves, improves the economic benefits of tea farmers and tea enterprises by more than 2 grades.
2. The invention utilizes the sweet and unique fragrance of cinnamon, health preserving efficacy and medicinal value, improves the quality of summer big-leaf black tea, and the novel product of the cinnamon black tea has the health preserving efficacy besides the high quality of sweet taste, red and bright liquor color, strong and lasting fragrance, has the medicinal value of tonifying deficiency and dispelling cold, warming channels and activating yang, inducing sweat and relieving muscles, overcomes the green taste of cinnamon leaves, improves the tea fragrance, improves the quality and the sale price, also improves the economic benefit of tea enterprises, and has great health care value and market development prospect.
3. According to the method, the cinnamon bark is kneaded and crushed and then is mixed with the fresh leaves of the large-leaf tea planted in Guangxi to be processed into the black tea product with sweet taste and rich meat and cinnamon flavor, so that the problem that the quality of the fresh leaves of the large-leaf Yunnan group is poor in high-temperature summer is solved, the bitter taste is heavy when the large-leaf Yunnan tea is directly processed into green tea by a traditional method, the fragrance of the processed black tea is flat, and the price of the finished tea is low; the black tea product with cinnamon fragrance is tight in appearance, oily in color, sweet in taste, obvious in cinnamon fragrance and red and bright in soup color.
4. According to the method, the withered fresh tea leaves are immediately put into the deactivated cinnamon tree leaves which are just taken out of the furnace for rolling, the water loss rate of the withered fresh tea leaves is high and is 60-62%, so that the juice of the cinnamon leaves permeates into the big leaf tea leaves in the rolling process by utilizing the good moisture absorption of the withered fresh tea leaves, the tea juice and the cinnamon leaf juice are mutually fused to form new tea aroma, and the tea aroma is further improved.
5. According to the invention, after fermentation, the fermentation is stopped by rapid gross fire, so that the water content of the fermented tea raw material is gradually evaporated, and then the aroma of the tea is rapidly locked by a full fire step, so that the aroma release is delayed to provide physical conditions, and the anti-oxidation preservation of the black tea is facilitated in the future; the fragrance of the black tea is improved, and the fragrance index of the black tea is improved.
Drawings
FIG. 1 is a photograph of the finished tea of osmanthus-flavored black tea obtained by the present invention.
FIG. 2 is a photograph showing the color of the brewed tea of the present invention.
FIG. 3 is a photograph of the leaf base of the osmanthus flavored black tea of the present invention after infusion.
Detailed Description
The present invention is further illustrated by the following examples in order that the advantages and features of the present invention may be more readily understood, but the scope of the invention is not limited to these examples.
Example 1
A method for processing cinnamon black tea by using fresh cinnamon leaves comprises the following steps:
(1) picking raw materials: picking mature tender and fresh leaves of cinnamon trees and fresh leaves of one bud and two leaves of Yunnan big-leaf tea trees respectively;
(2) withering: naturally withering the tender fresh leaves of the cinnamon tree and the fresh leaves of the Yunnan large-leaf tea tree in the step (1) indoors to obtain withered fresh cinnamon leaves and withered fresh tea leaves; the withering of the tender and fresh leaves of the cinnamon tree is as follows: spreading tender and fresh leaves of the cinnamon tree on a dustpan with the thickness of 2 cm, wherein the withering water loss rate is 30%, and the cinnamon tree is withered until the color changes from emerald green to yellow green; the withering of the fresh leaves of the Yunnan large-leaf tea trees is as follows: spreading fresh leaves of Yunnan large-leaf tea trees on a dustpan with the thickness of 1 cm, wherein the withering water loss rate is 60%, the fresh leaves are withered until the color of the fresh leaves is changed from dark green to dark green, and the withered leaves are soft, are held by hands to form a ball, are not easy to scatter by loose hands, and are continuous in tender stem folding;
(3) deactivating enzyme of fresh cinnamon leaves: deactivating enzyme of the withered fresh cinnamon leaves in the step (2) for 6 minutes by using a liquefying roller deactivation machine, wherein the deactivation temperature is 220 ℃, and obtaining the deactivated cinnamon tree leaves for later use;
(4) mixing and twisting: mixing and rolling the withered fresh tea leaves in the step (2) and the killed leaves of the cinnamon trees in the step (3) according to the weight ratio of 8:1 to obtain mixed and rolled leaves; during the kneading, firstly, carrying out air kneading for 15 minutes, then, carrying out pressure kneading for 12 minutes, and finally, carrying out air kneading for 10 minutes;
(5) aerobic fermentation: fermenting the mixed and twisted leaves in the step (4) for 3 hours, and controlling the temperature of the leaves during fermentation to be 30 ℃; spraying 20mL/kg of cinnamon bark juice extracting solution to the mixed and twisted leaves at an interval of 25 minutes during the fermentation process while stirring until the fermentation is finished to obtain fermented leaves for later use; the preparation method of the cinnamon bark juice extracting solution comprises the following steps: taking cinnamon as a raw material, crushing cinnamon bark into granules, and mixing the cinnamon bark granules with water according to a mass ratio of 1: 4, adding water into the cinnamon bark particles, boiling for 1.5 hours with slow fire, filtering dregs, and cooling to obtain cinnamon bark juice extracting solution;
(6) quick gross fire: putting the fermented leaves obtained in the step (5) into a dryer, carrying out gross fire for 15 minutes, controlling the temperature of the gross fire to be 85 ℃, and naturally cooling to normal temperature after the gross fire is finished to obtain tea leaves subjected to the gross fire;
(7) and (3) full fire: drying the tea leaves subjected to the gross fire in the step (6) for 110 minutes by using a full fire, controlling the temperature of the full fire to be 70 ℃, controlling the water content of the tea leaves to be below 7%, cooling to normal temperature, and sealing and standing for 5 days to obtain the raw tea of the osmanthus-flavored black tea;
(8) and (3) fragrance extraction: carrying out aroma improvement on the raw tea obtained in the step (7) for 55 minutes, controlling the aroma improvement temperature to be 95 ℃, and obtaining dry tea with the moisture content below 5% after aroma improvement;
(9) screening: and (4) screening the tea leaves and the cinnamon leaves in the dry tea in the step (8), and removing the cinnamon leaves to obtain the tea leaves, namely the cinnamon-flavor black tea. As shown in figure 1, the tea leaf strips of the osmanthus-flavored black tea are firm and black brown and oily.
Example 2
A method for processing cinnamon black tea by using fresh cinnamon leaves comprises the following steps:
(1) picking raw materials: picking mature tender and fresh leaves of cinnamon trees and fresh leaves of one bud and two leaves of Yunnan big-leaf tea trees respectively;
(2) withering: naturally withering the tender fresh leaves of the cinnamon tree and the fresh leaves of the Yunnan large-leaf tea tree in the step (1) indoors to obtain withered fresh cinnamon leaves and withered fresh tea leaves; the withering of the tender and fresh leaves of the cinnamon tree is as follows: spreading tender and fresh leaves of the cinnamon tree on a dustpan with the thickness of 3 cm, wherein the withering water loss rate is 40%, and the cinnamon tree is withered until the color changes from emerald green to yellow green; the withering of the fresh leaves of the Yunnan large-leaf tea trees is as follows: spreading fresh leaves of Yunnan large-leaf tea trees on a dustpan with the thickness of 2 cm, wherein the withering water loss rate is 62%, the fresh leaves are withered until the color of the fresh leaves is changed from dark green to dark green, and the withered leaves are soft, are held by hands to form a ball, are not easy to scatter by loose hands, and are continuous in tender stem folding;
(3) deactivating enzyme of fresh cinnamon leaves: deactivating enzyme of the withered fresh cinnamon leaves in the step (2) for 4 minutes by using a liquefying roller deactivation machine, wherein the deactivation temperature is 250 ℃, and obtaining the deactivated cinnamon tree leaves for later use;
(4) mixing and twisting: mixing and rolling the withered fresh tea leaves in the step (2) and the killed cinnamon leaves in the step (3) according to the weight ratio of 10:1 to obtain mixed and rolled leaves; during the kneading, firstly, air kneading is carried out for 20 minutes, then, pressing and kneading are carried out for 15 minutes, and finally, air kneading is carried out for 15 minutes;
(5) aerobic fermentation: fermenting the mixed and twisted leaves in the step (4) for 4 hours, and controlling the temperature of the leaves during fermentation to be 32 ℃; spraying 40mL/kg of cinnamon bark juice extracting solution to the mixed and twisted leaves at an interval of 30 minutes during the fermentation process while stirring until the fermentation is finished to obtain fermented leaves for later use; the preparation method of the cinnamon bark juice extracting solution comprises the following steps: taking cinnamon as a raw material, crushing cinnamon bark into granules, and mixing the cinnamon bark granules with water according to a mass ratio of 1: 5, adding water into the cinnamon bark particles, boiling for 2 hours with slow fire, filtering dregs, and cooling to obtain cinnamon bark juice extracting solution;
(6) quick gross fire: putting the fermented leaves obtained in the step (5) into a dryer, carrying out gross fire for 20 minutes, controlling the temperature of the gross fire to be 90 ℃, and naturally cooling to normal temperature after the gross fire is finished to obtain tea leaves after the gross fire;
(7) and (3) full fire: drying the tea leaves subjected to the gross fire in the step (6) for 120 minutes by using a full fire, controlling the temperature of the full fire to be 80 ℃, controlling the water content of the tea leaves to be below 7%, cooling to normal temperature, and sealing and standing for 7 days to obtain the raw tea of the osmanthus-flavored black tea;
(8) and (3) fragrance extraction: carrying out aroma improvement on the raw tea obtained in the step (7) for 60 minutes, controlling the aroma improvement temperature to be 100 ℃, and obtaining dry tea with the moisture content of below 5% after aroma improvement;
(9) screening: and (4) screening the tea leaves and the cinnamon leaves in the dry tea in the step (8), and removing the cinnamon leaves to obtain the tea leaves, namely the cinnamon-flavor black tea.
Example 3
A method for processing cinnamon black tea by using fresh cinnamon leaves comprises the following steps:
(1) picking raw materials: picking mature tender and fresh leaves of cinnamon trees and fresh leaves of one bud and two leaves of Yunnan big-leaf tea trees respectively;
(2) withering: naturally withering the tender fresh leaves of the cinnamon tree and the fresh leaves of the Yunnan large-leaf tea tree in the step (1) indoors to obtain withered fresh cinnamon leaves and withered fresh tea leaves; the withering of the tender and fresh leaves of the cinnamon tree is as follows: spreading tender and fresh leaves of the cinnamon tree on a dustpan with the thickness of 2.5 cm, wherein the withering water loss rate is 35%, and the cinnamon tree is withered until the color changes from emerald green to yellow green; the withering of the fresh leaves of the Yunnan large-leaf tea trees is as follows: spreading fresh leaves of Yunnan large-leaf tea trees on a dustpan with the thickness of 1.5 cm, wherein the withering water loss rate is 61%, the fresh leaves are withered until the color of the fresh leaves is changed from dark green to dark green, and the withered leaves are soft, are held into a ball by hand, are not easy to scatter by loose hands and have continuous tender stems;
(3) deactivating enzyme of fresh cinnamon leaves: deactivating enzyme of the withered fresh cinnamon leaves in the step (2) for 5 minutes by using a liquefying roller deactivation machine, wherein the deactivation temperature is 230 ℃, and obtaining the deactivated cinnamon tree leaves for later use;
(4) mixing and twisting: mixing and rolling the withered fresh tea leaves in the step (2) and the killed leaves of the cinnamon trees in the step (3) according to the weight ratio of 9:1 to obtain mixed and rolled leaves; the kneading is carried out for 18 minutes in an empty way, then the pressing and kneading are carried out for 14 minutes, and finally the kneading is carried out for 12 minutes in an empty way;
(5) aerobic fermentation: fermenting the mixed and twisted leaves in the step (4) for 3.5 hours, and controlling the temperature of the leaves during fermentation to be 31 ℃; spraying 30mL/kg of cinnamon bark juice extracting solution to the mixed and twisted leaves at an interval of 28 minutes during the fermentation process while stirring until the fermentation is finished to obtain fermented leaves for later use; the preparation method of the cinnamon bark juice extracting solution comprises the following steps: taking cinnamon as a raw material, crushing cinnamon bark into granules, and mixing the cinnamon bark granules with water according to a mass ratio of 1: 4.5, adding water into the cinnamon bark particles, boiling for 1.6 hours with slow fire, filtering dregs, and cooling to obtain cinnamon bark juice extracting solution;
(6) quick gross fire: putting the fermented leaves obtained in the step (5) into a dryer, carrying out gross fire for 18 minutes, controlling the temperature of the gross fire to be 88 ℃, and naturally cooling to normal temperature after the gross fire is finished to obtain tea leaves after the gross fire;
(7) and (3) full fire: continuously drying the tea leaves subjected to the gross fire in the step (6) for 115 minutes by using full fire, controlling the temperature of the full fire to be 75 ℃, controlling the water content of the tea leaves to be below 7%, cooling to normal temperature, and sealing and standing for 6 days to obtain the raw tea of the osmanthus-flavored black tea;
(8) and (3) fragrance extraction: carrying out aroma improvement on the raw tea obtained in the step (7) for 58 minutes, controlling the aroma improvement temperature to be 98 ℃, and obtaining dry tea with the moisture content of below 5% after aroma improvement;
(9) screening: and (4) screening the tea leaves and the cinnamon leaves in the dry tea in the step (8), and removing the cinnamon leaves to obtain the tea leaves, namely the cinnamon-flavor black tea.
Comparative example 1
Compared with example 3, the difference is that the withering and water loss rate of the fresh leaves of the Yunnan large-leaf tea trees is 30 percent.
Comparative example 2
The difference from example 3 is that the leaf temperature was controlled to 33 ℃ during fermentation and clear water was used instead of the cinnamon bark juice extract, which did not include step (6).
Comparative example 3
Compared with the embodiment 3, the method has the difference that the leaves of the Yunnan large-leaf tea tree variety are directly used as the raw material, tender and fresh leaves of the cinnamon tree are not added, and clear water is used for replacing the cinnamon bark juice extracting solution in the aerobic fermentation process in the step (5).
And (3) detection: the osmanthus-flavored black tea products of examples 1 to 3 and comparative examples 1 to 3 were subjected to the following tests, sensory evaluation and sensory evaluation after leaving the tea leaves for 6 months, and the test results are shown in table 1.
TABLE 1
As can be seen from Table 1, the indexes of the osmanthus-flavored black tea prepared by the method of the invention in examples 1-3 are superior to those of comparative examples 1-3. The osmanthus-flavored black tea prepared in the embodiments 1 to 3 of the invention has oily color, red and bright soup color, strong cinnamon aroma, sweet and smooth taste and palatability, the sensory evaluation of the products prepared in the embodiments 1 to 3 after being placed for 6 months is consistent with that of the products prepared just after preparation, and the comparative examples 1 to 3 have obvious changes, which shows that the method of the invention has more stable aroma locking effect. FIG. 2 is a photograph of the soup color of the osmanthus-flavored black tea obtained by the method of the present invention, which is red and bright, and also illustrates that the osmanthus-flavored black tea obtained by the method of the present invention has higher quality. FIG. 3 is a photograph of the leaf base of the osmanthus flavored black tea of the present invention after infusion. The tea leaves are red and uniform, which shows that the tea leaves are uniformly fermented and have better quality.
The above description is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. A method for processing cinnamon black tea by using fresh cinnamon leaves is characterized by comprising the following steps:
(1) picking raw materials: picking tender fresh leaves of cinnamon and fresh leaves of Yunnan big-leaf tea tree varieties respectively;
(2) withering: carrying out indoor natural withering on the tender fresh leaves of the cinnamon tree in the step (1) and the fresh leaves of the Yunnan large-leaf tea tree to obtain withered fresh cinnamon leaves and withered fresh tea leaves;
(3) deactivating enzyme of fresh cinnamon leaves: deactivating enzyme of the withered fresh cinnamon leaves in the step (2) to obtain deactivated cinnamon tree leaves for later use;
(4) mixing and twisting: mixing and rolling the withered fresh tea leaves in the step (2) and the killed cinnamon leaves in the step (3) according to the weight ratio of 8-10:1 to obtain mixed and rolled leaves;
(5) aerobic fermentation: fermenting the mixed and twisted leaves in the step (4) for 3-4 hours, and spraying cinnamon bark juice extracting solution while turning and stirring the mixed and twisted leaves at intervals of 25-30 minutes in the fermentation process until the fermentation is finished to obtain fermented leaves for later use;
(6) quick gross fire: putting the fermented leaves obtained in the step (5) into a dryer to be subjected to gross fire for 15-20 minutes, controlling the temperature of the gross fire to be 85-90 ℃, and naturally cooling to normal temperature after the gross fire is finished to obtain tea leaves subjected to the gross fire;
(7) and (3) full fire: drying the tea leaves subjected to the gross fire in the step (6) for 110-120 minutes with the full fire temperature controlled at 80-90 ℃ and the water content controlled below 7%, cooling to normal temperature, sealing and standing for 5-7 days to obtain the raw tea of the osmanthus-flavored black tea;
(8) and (3) fragrance extraction: carrying out aroma improvement on the raw tea obtained in the step (7) for 55-60 minutes, controlling the aroma improving temperature to be 95-100 ℃, and obtaining the dry tea with the moisture content below 5% after aroma improvement;
(9) screening: and (4) screening the tea leaves and the cinnamon leaves in the dry tea in the step (8), and removing the cinnamon leaves to obtain the tea leaves, namely the cinnamon-flavor black tea.
2. The method for processing cinnamon black tea from fresh cinnamon leaves according to claim 1, wherein the picked fresh leaves of the Yunnan big-leaf tea variety are fresh leaves with one bud and two leaves tender.
3. The method for processing cinnamon-flavor black tea from fresh cinnamon leaves according to claim 1, wherein the fresh cinnamon leaves in step (1) are ripe tender fresh leaves.
4. The method for processing cinnamon black tea from fresh cinnamon leaves as claimed in claim 1, wherein the technical point of withering of the tender cinnamon leaves is as follows: spreading tender and fresh leaves of the cinnamon tree on a dustpan with the thickness of 2-3 cm, wherein the withering water loss rate is 30-40%, and the cinnamon tree is withered until the color changes from emerald green to yellow green;
the withering of the fresh leaves of the Yunnan large-leaf tea trees is as follows: spreading the fresh leaves of Yunnan large-leaf tea trees on a dustpan with the thickness of 1-2 cm, wherein the withering water loss rate is 60-62%, the fresh leaves are withered until the color of the fresh leaves is changed from dark green to dark green, and the withered leaves are soft, are held into a ball by hand, are not easy to scatter by hand and have continuous tender stems.
5. The method for processing cinnamon-flavor black tea from fresh cinnamon leaves as claimed in claim 1, wherein the de-enzyming is carried out by using a liquefied roller de-enzyming machine, the de-enzyming temperature is 220-250 ℃, and the de-enzyming time is 4-6 minutes.
6. The method for processing cinnamon-flavor black tea from fresh cinnamon leaves as claimed in claim 1, wherein the rolling is carried out by air-kneading for 15-20 minutes, then pressing and kneading for 12-15 minutes, and finally air-kneading for 10-15 minutes.
7. The method for processing cinnamon-flavor black tea from fresh cinnamon leaves according to claim 1, wherein the leaf temperature during the fermentation is controlled to be 30-32 ℃.
8. The method for processing cinnamon black tea from fresh cinnamon leaves as claimed in claim 1, wherein said cinnamon bark juice extract is prepared by: taking cinnamon as a raw material, crushing cinnamon bark into granules, and mixing the cinnamon bark granules with water according to a mass ratio of 1: 4-5, adding water into the cinnamon bark particles, boiling with slow fire for 1.5-2 hours, filtering dregs, and cooling to obtain the cinnamon bark juice extracting solution.
9. The method for processing cinnamon-flavor black tea from fresh cinnamon leaves according to claim 1, wherein said cinnamon bark juice extract is sprayed in an amount of 20-40mL/kg mixed twisted leaves per time.
10. A cinnamon black tea, characterized in that it is prepared by the method of processing cinnamon black tea with fresh cinnamon leaves as claimed in any one of claims 1 to 9.
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