阅读说明：本技术 一种木姜叶柯珠形茶的加工工艺 (Processing technology of lithocarpus litseifolius bead-shaped tea ) 是由 熊艳飞 肖旭 于 2021-08-30 设计创作，主要内容包括：本方案公开了木姜叶柯茶生产技术领域的一种木姜叶柯珠形茶的加工工艺,包括以下步骤：依次按照摊青、一次杀青、一次解块、一次揉捻、二次杀青、二次解块、二次揉捻、烘干、成型、辉锅和提香的工序对木姜叶柯鲜叶进行处理,得到木姜叶柯珠形茶；其中,一次杀青时,使用280～300℃的温度对木姜叶柯鲜叶杀青处理4～5min,然后摊凉冷却；烘干时采用两次烘干,首次烘干的烘干温度为230～240℃,烘干时间为9～12min；木姜叶柯叶片首次烘干并彻底摊凉回软后,进而二次烘干,二次烘干的温度为230～240℃,烘干时间为9～12min。采用本申请的方法制得的木姜叶柯珠形茶具有更好的均匀性。(The scheme discloses a processing technology of Lithocarpus litseifolius bead-shaped tea in the technical field of Lithocarpus litseifolius tea production, which comprises the following steps: sequentially processing the fresh leaves of Litsea pungens according to the procedures of spreading, first deactivating enzyme, first deblocking, first rolling, second deactivating enzyme, second deblocking, second rolling, drying, molding, roasting and aroma raising to obtain Litsea pungens bead-shaped tea; wherein, in the primary fixation, the fresh leaves of lithocarpus litseifolius are subjected to fixation treatment for 4-5 min at the temperature of 280-300 ℃, and then spread to cool and cool; the drying is carried out twice, the drying temperature for the first drying is 230-240 ℃, and the drying time is 9-12 min; and drying the leaves of lithocarpus litseifolius for the first time, completely spreading for cooling and softening, and then drying for the second time, wherein the temperature for drying for the second time is 230-240 ℃, and the drying time is 9-12 min. The lithocarpus litseifolius bead-shaped tea prepared by the method has better uniformity.)

1. A processing technology of Lithocarpus litseifolius bead-shaped tea comprises the following steps: sequentially processing the fresh leaves of Litsea pungens according to the procedures of spreading, first deactivating enzyme, first deblocking, first rolling, second deactivating enzyme, second deblocking, second rolling, drying, molding, roasting and aroma raising to obtain Litsea pungens bead-shaped tea; the method is characterized in that: wherein, in the primary fixation, the fresh leaves of lithocarpus litseifolius are subjected to fixation treatment for 4-5 min at the temperature of 280-300 ℃, and then spread to cool and cool; the drying is carried out twice, the drying temperature for the first drying is 230-240 ℃, and the drying time is 9-12 min; and drying the leaves of lithocarpus litseifolius for the first time, completely spreading for cooling and softening, and then drying for the second time, wherein the temperature for drying for the second time is 230-240 ℃, and the drying time is 9-12 min.

2. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 1, is characterized in that: when in forming, baking the dried Lithocarpus pungens leaves by using a leaven hair roasting machine to obtain Lithocarpus pungens tea beads, which specifically comprises the following steps: molding in a large gear for 30-35 min, and controlling the temperature of a pot to be 140-150 ℃; and then forming in a small gear for 35-40 min, and controlling the pot temperature at 130-135 ℃.

3. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 2, is characterized in that: during forming, the Lithocarpus litseifolius tea is subjected to large-gear forming treatment, is cooled to normal temperature in a pot, and is subjected to small-gear forming treatment.

4. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 3, wherein the processing technology comprises the following steps: when spreading, the thickness of the fresh leaves of the lithocarpus litseifolius is 18-22 CM, turning the leaves once every 2-3 hours, and spreading to cool until the fresh leaves of the lithocarpus litseifolius become soft.

5. The processing technology of Lithocarpus litseifolius bead-shaped tea according to any one of claims 1 to 4, which is characterized in that: and during primary rolling, the lithocarpus litseifolius leaves are rolled in a non-pressurized mode, the rolling speed is 35-40 r/min, and the rolling time is 13-15 min.

6. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 5, which is characterized in that: and during the secondary fixation, the fixation temperature is 280-290 ℃, and the fixation time is 5-6 min.

7. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 6, wherein the processing technology comprises the following steps: and during the second rolling, the lithocarpus litseifolius leaves are rolled in a non-pressurized mode, the rolling speed is 30-35 r/min, and the rolling time is 10-12 min.

8. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 7, wherein the processing technology comprises the following steps: and (3) when the tea is baked, setting the temperature of a baking machine to be 200 ℃, putting the formed Lithocarpus litseifolius tea beads into the baking machine when the temperature of the baking machine reaches 80 ℃, and baking the Lithocarpus litseifolius tea beads for 30-35 min.

9. The processing technology of Lithocarpus litseifolius bead-shaped tea according to claim 8, wherein the processing technology comprises the following steps: the Lithocarpus litseifolius bead-shaped tea is obtained by performing aroma raising treatment on Lithocarpus litseifolius tea beads, wherein the aroma raising temperature is 85-95 ℃, and the aroma raising time is 55-65 min.

10. The processing technology of lithocarpus litseifolius bead-shaped tea according to claim 9, which is characterized in that: and when the first deblocking and/or the second deblocking are carried out, the deblocking blades of the deblocking machine are coated with gauze.

Technical Field

The invention belongs to the technical field of Lithocarpus litseifolius (rehd) Rehd tea production, and particularly relates to a processing technology of Lithocarpus litseifolius Rehd bead-shaped tea.

Background

Lithocarpus litseifolius (Lithocarpus litseifolius) is a fagaceae, Lithocarpus litseifolius (Lithocarpus litseifolius) belongs to Keohai, branches and leaves have no hair, leaves are paper to be nearly leather, are rarely long and narrow and oval, have gradually sharp or short and sharp tops, wedge-shaped bases to wide wedge-shaped bases, medium veins are protruded on the leaves, branch veins are fine, the two surfaces are in the same color or the leaf backs are pale gray, the male panicle-shaped inflorescences are arranged into a cone inflorescence, sometimes in the same order as the female and the male, the style is slightly longer than the flower quilt, and the dry flowers are normally oily and glossy. The fresh leaves of Lithocarpus litseifolius have sweet taste, and can be made into Lithocarpus litseifolius tea, which is commonly called sweet tea as a substitute of common tea.

When the lithocarpus litseifolius bead-shaped tea is prepared, compared with the common green tea, the lithocarpus litseifolius leaves are thin and fragile, are easy to adhere after high-temperature enzyme deactivation, and do not have buds, so that the processing technology is more complex compared with the processing of the conventional green tea. For example, application No. 201810910053.5 discloses a method for preparing Lithocarpus litseifolius sweet tea, which comprises the following steps: s1: collecting fresh leaves of Lithocarpus litseifolius nakai as tea raw materials, and spreading for cooling; s2: carrying out primary fixation treatment on the spread and cooled tea leaves, wherein the pot temperature of the primary fixation is 380-400 ℃, the fixation is carried out for 6-8 minutes, and then spreading, cooling and cooling are carried out; s3: the completely cooled tea leaves are subjected to primary deblocking and dispersion and then primary rolling treatment; s4: carrying out secondary de-enzyming, secondary deblocking and secondary rolling treatment on the tea leaves subjected to the primary rolling, wherein the temperature of a secondary de-enzyming pot is 280-300 ℃, and de-enzyming is carried out for 5-6 minutes; s5: drying, forming, roasting, aroma-raising drying, screening and boxing the twice-twisted tea leaves in sequence; the temperature during drying is about 260 ℃. The method solves the problem of adhesion of Lithocarpus litseifolius leaves after de-enzyming to a certain extent; however, the first enzyme deactivation of the lithocarpus litseifolius leaves is too high in temperature and long in enzyme deactivation time, and the lithocarpus litseifolius leaves are dried in a long-time high-temperature mode before forming, so that the lithocarpus litseifolius leaves are crisp, the lithocarpus litseifolius leaves are broken in a subsequent forming stage, and the obtained lithocarpus litseifolius tea is uneven in particle size and large in particle size difference.

Disclosure of Invention

The invention aims to provide a processing technology of Lithocarpus litseifolius bead-shaped tea, and aims to solve the problems that Lithocarpus litseifolius bead-shaped tea prepared by the prior art is uneven in particle and large in particle size difference.

The processing technology of the lithocarpus litseifolius bead-shaped tea comprises the following steps: sequentially processing the fresh leaves of Litsea pungens according to the procedures of spreading, first deactivating enzyme, first deblocking, first rolling, second deactivating enzyme, second deblocking, second rolling, drying, molding, roasting and aroma raising to obtain Litsea pungens bead-shaped tea; wherein, in the primary fixation, the fresh leaves of lithocarpus litseifolius are subjected to fixation treatment for 4-5 min at the temperature of 280-300 ℃, and then spread to cool and cool; the drying is carried out twice, the drying temperature for the first drying is 230-240 ℃, and the drying time is 9-12 min; and drying the leaves of lithocarpus litseifolius for the first time, completely spreading for cooling and softening, and then drying for the second time, wherein the temperature for drying for the second time is 230-240 ℃, and the drying time is 9-12 min.

The beneficial effect of this scheme: according to the scheme, the fresh Lithocarpus litseifolius leaves are subjected to enzyme deactivation for 4-5 min at a low temperature of 280-300 ℃ in one-time enzyme deactivation, so that more water is contained in the Lithocarpus litseifolius leaves, and meanwhile, the leaves of the Lithocarpus litseifolius leaves keep good integrity and high water due to the low temperature. Performing primary drying on the lithocarpus litseifolius leaves at 230-240 ℃ for 9-12 min in a drying link, so that a large amount of moisture in the lithocarpus litseifolius leaves is dissipated, and dry withering of the surfaces of the lithocarpus litseifolius leaves cannot occur due to relatively low drying temperature; and spreading for cooling to enable the water inside the lithocarpus litseifolius to move outwards, so that the water content balance of the lithocarpus litseifolius leaves is ensured, and preparation is made for secondary drying. During secondary drying, because the water in the lithocarpus litseifolius supplements the surface of the lithocarpus litseifolius leaves, the water content of the lithocarpus litseifolius leaves is reduced to 18% -20% during secondary drying, but the surfaces of the lithocarpus litseifolius leaves still have relatively good toughness, so that the lithocarpus litseifolius leaves can keep good integrity during forming, and the prepared lithocarpus litseifolius bead-shaped tea is more uniform, and the particle size difference among the lithocarpus litseifolius bead-shaped tea particles is smaller. In addition, in the primary drying and secondary drying processes, the moisture content in the lithocarpus litseifolius leaves is relatively balanced, and the drying time is relatively long; during drying, trilobatin in the Lithocarpus litseifolius leaves can be better blended into water, so that the content of trilobatin in the Lithocarpus litseifolius leaves is reduced while water is evaporated, and the prepared Lithocarpus litseifolius bead-shaped tea has good taste.

Further, during forming, baking the dried Lithocarpus litseifolius leaves by using a Quhao roasting machine to obtain Lithocarpus litseifolius tea beads, which specifically comprise the following steps: molding in a large gear for 30-35 min, and controlling the temperature of a pot to be 140-150 ℃; and then forming in a small gear for 35-40 min, and controlling the pot temperature at 130-135 ℃. Adopt the mode of big gear earlier little gear again to bake litsea leaf, because the water content of litsea leaf earlier stage is higher relatively, more be favorable to reducing the damage of litsea leaf, simultaneously bake at the big gear under the relatively high humidity, be favorable to the curling of litsea leaf to make the litsea leaf bead shape tea shape that makes better.

Further, during forming, the Lithocarpus litseifolius nakai tea leaves are subjected to large-gear forming treatment, are firstly cooled to normal temperature in a pot, and then are subjected to small-gear forming treatment. After the Lithocarpus litseifolius tea is subjected to high-temperature and high-speed treatment at a large gear, the water content of the Lithocarpus litseifolius tea is further reduced, the Lithocarpus litseifolius tea is higher in temperature and more brittle, and the Lithocarpus litseifolius tea is further formed at a high temperature, so that the Lithocarpus litseifolius tea is easy to damage and break, and the prepared Lithocarpus litseifolius tea beads are uneven in particle size, large in particle size difference and not enough in mellow degree.

Further, when spreading, the thickness of the fresh leaves of the lithocarpus litseifolius is 18-22 CM, turning the leaves once every 2-3 hours, and spreading to cool until the fresh leaves of the lithocarpus litseifolius become soft.

Further, during primary rolling, the lithocarpus litseifolius leaves are rolled in a non-pressurized mode, the rolling speed is 35-40 r/min, and the rolling time is 13-15 min. The leaves of Lithocarpus litseifolius are kneaded at a low rotation speed and without pressure, so as to reduce adhesion of Lithocarpus litseifolius.

Further, during the secondary fixation, the fixation temperature is 280-290 ℃, and the fixation time is 5-6 min.

Further, during the second rolling, the leaves of lithocarpus litseifolius are rolled in a non-pressurized mode, the rolling speed is 30-35 r/min, and the rolling time is 10-12 min.

Further, when the tea is baked, the temperature of a baking machine is set to be 200 ℃, and when the temperature of the baking machine reaches 80 ℃, the formed Lithocarpus litseifolius tea beads are put into the baking machine, and the Lithocarpus litseifolius tea beads are baked for 30-35 min. Through the roasting treatment, the water content of the lithocarpus litseifolius tea beads is further reduced, and the surfaces of the lithocarpus litseifolius tea beads are brighter.

And further, carrying out aroma raising treatment on the Lithocarpus litseifolius tea beads to obtain Lithocarpus litseifolius bead-shaped tea, wherein the aroma raising temperature is 85-95 ℃, and the aroma raising time is 55-65 min. Through the aroma improving treatment, the water content of the lithocarpus litseifolius tea is further reduced, and the aroma of the lithocarpus litseifolius tea is further improved.

Further, during primary deblocking and/or secondary deblocking, a deblocking blade of a deblocking machine is coated with gauze. Through the coating of the gauze, the damage of the deblocking blades of the deblocking machine to the Lithocarpus litseifolius leaves is reduced, and the damage of the Lithocarpus litseifolius leaves is reduced.

Drawings

Fig. 1 shows an lithocarpus litseifolius bead-shaped tea produced by the processing technology of lithocarpus litseifolius bead-shaped tea in embodiment 1 of the invention;

FIG. 2 is a Lithocarpus litseifolius bead-shaped tea produced by the processing technology of Lithocarpus litseifolius bead-shaped tea in example 4 of the invention;

FIG. 3 shows a kogaku-shaped tea produced by the method of the comparative example.

Detailed Description

The following is further detailed by way of specific embodiments:

example 1: a processing technology of Lithocarpus litseifolius bead-shaped tea comprises the following steps:

step one, spreading green: uniformly spreading the picked fresh leaves of the lithocarpus litseifolius on a ventilation net rack, wherein the spreading thickness of the fresh leaves of the lithocarpus litseifolius is 20CM, turning the leaves once every 2 hours, and spreading for cooling until the fresh leaves of the lithocarpus litseifolius become soft;

step two, one-time enzyme deactivation: putting the leaves of the Lithocarpus litseifolius after being spread into a roller fixation machine for primary fixation, wherein the fixation temperature is 300 ℃, the fixation time is 5min, and the leaves are spread in a cool air groove for rapid cooling after fixation;

step three, primary deblocking: placing the cooled Lithocarpus litseifolius leaves in a deblocking machine for full deblocking and dispersion; after deblocking, the tea leaves are spread evenly and can not be piled up;

step four, rolling for one time: putting the leaves of Lithocarpus litseifolius which are deblocked for the first time into a rolling machine for rolling for the first time, wherein the leaves of Lithocarpus litseifolius are rolled in a non-pressure mode, the rolling speed is 35 r/min, and the rolling time is 13 min;

step five, secondary fixation: putting the leaves of Lithocarpus litseifolius after primary rolling into a roller fixation machine for secondary fixation at 280 deg.C for 5min, spreading in a cool air groove for rapid cooling;

step six, secondary deblocking: putting the cooled Lithocarpus litseifolius leaves in a deblocking machine for full deblocking and dispersion; after deblocking, the tea leaves are spread evenly and can not be piled up;

step seven, secondary rolling: putting the leaves of Lithocarpus litseifolius which are deblocked for the second time into a rolling machine for rolling for the second time, wherein the leaves of Lithocarpus litseifolius are rolled in a non-pressure mode, the rolling speed is 30 r/min, and the rolling time is 10 min;

step eight, drying: putting the leaves of Lithocarpus litseifolius after the secondary rolling into a de-enzyming machine for drying twice, wherein the drying temperature for the primary drying is 240 ℃, and the drying time is 10 min; drying Lithocarpus litseifolius leaves for the first time, thoroughly spreading for cooling, and softening, and further drying for the second time at 240 deg.C for 10 min;

step nine, forming: baking the dried Lithocarpus pungens leaves by using a Quhao roasting machine to obtain Lithocarpus pungens tea beads, wherein the Quhao roasting machine selects a 6 CCG-50X 2 double-pot Quhao roasting machine produced by Zhejiang red five-ring tea manufacturing equipment GmbH; the method specifically comprises the following steps: molding at a large gear for 30min, and controlling the temperature of a pot at 150 ℃; cooling the pot to normal temperature after the large gear molding, and then molding the pot for 40min at the small gear, wherein the temperature of the pot is controlled at 130 ℃;

step ten, roasting the pot: placing the formed Lithocarpus pungens tea beads into a roasting machine for roasting treatment, wherein the temperature of the roasting machine is set to 200 ℃ when roasting is carried out, and the formed Lithocarpus pungens tea beads are put into the roasting machine when the temperature of the roasting machine reaches 80 ℃, and the Lithocarpus pungens tea bead roasting treatment is carried out for 30 min;

eleven, fragrance extraction: and (3) carrying out aroma raising treatment on the Lithocarpus pungens tea beads after roasting by using an aroma raising machine to obtain Lithocarpus pungens bead-shaped tea, wherein the aroma raising temperature is 90 ℃, and the aroma raising time is 60 min.

The Lithocarpus litseifolius bead-shaped tea prepared in example 1 is shown in figure 1. The lithocarpus litseifolius tea prepared in example 2 was similar to that prepared in example 1.

Example 2: a processing technology of Lithocarpus litseifolius bead-shaped tea comprises the following steps:

step one, spreading green: uniformly spreading the picked fresh leaves of the lithocarpus litseifolius on a ventilation net rack, wherein the spreading thickness of the fresh leaves of the lithocarpus litseifolius is 22CM, turning the leaves once every 2 hours, and spreading for cooling until the fresh leaves of the lithocarpus litseifolius become soft;

step two, one-time enzyme deactivation: putting the leaves of the Lithocarpus litseifolius after being spread into a roller fixation machine for primary fixation, wherein the fixation temperature is 280 ℃, the fixation time is 5min, and the leaves are spread in a cool air groove for rapid cooling after fixation;

step three, primary deblocking: placing the cooled Lithocarpus litseifolius leaves in a deblocking machine for full deblocking and dispersion; after deblocking, the tea leaves are spread evenly and can not be piled up;

step four, rolling for one time: putting the leaves of Lithocarpus litseifolius which are deblocked for the first time into a rolling machine for rolling for the first time, wherein the leaves of Lithocarpus litseifolius are rolled in a non-pressure mode, the rolling speed is 40 r/min, and the rolling time is 15 min;

step five, secondary fixation: putting the leaves of Lithocarpus litseifolius after primary rolling into a roller fixation machine for secondary fixation at 290 deg.C for 6min, spreading in a cool air groove, and rapidly cooling;

step six, secondary deblocking: putting the cooled Lithocarpus litseifolius leaves in a deblocking machine for full deblocking and dispersion; after deblocking, the tea leaves are spread evenly and can not be piled up;

step seven, secondary rolling: putting the leaves of Lithocarpus litseifolius which are deblocked for the second time into a rolling machine for rolling for the second time, wherein the leaves of Lithocarpus litseifolius are rolled in a non-pressure mode, the rolling speed is 35 r/min, and the rolling time is 12 min;

step eight, drying: putting the leaves of Lithocarpus litseifolius after the secondary rolling into a de-enzyming machine for drying twice, wherein the drying temperature for the primary drying is 230 ℃, and the drying time is 12 min; drying Lithocarpus litseifolius leaves for the first time, thoroughly spreading for cooling, and softening, and further drying for the second time at 235 deg.C for 9 min;

step nine, forming: baking the dried leaves of Lithocarpus litseifolius by using a 6 CCG-50 x 2 double-pan Quhao roasting machine produced by Zhejiang red Wuhuan tea making equipment GmbH to obtain Lithocarpus litseifolius tea beads, which specifically comprises the following steps: molding at a large gear for 35min, and controlling the temperature of a pot at 140 ℃; molding in small gear for 35min, and controlling the temperature of the pot at 135 deg.C;

step ten, roasting the pot: placing the formed Lithocarpus pungens tea beads into a roasting machine for roasting treatment, wherein the temperature of the roasting machine is set to be 200 ℃ when roasting is carried out, and when the temperature of the roasting machine reaches 80 ℃, the formed Lithocarpus pungens tea beads are put into the roasting machine, and the Lithocarpus pungens tea bead roasting treatment is carried out for 30-35 min;

eleven, fragrance extraction: and (3) carrying out aroma raising treatment on the Lithocarpus pungens tea beads after roasting by using an aroma raising machine to obtain Lithocarpus pungens bead-shaped tea, wherein the aroma raising temperature is 85 ℃, and the aroma raising time is 65 min.

Example 3 differs from example 1 only in that: when deblocking, the deblocking blades of the deblocking machine are coated with gauze.

Example 4 differs from example 1 only in that: during drying, the leaves of lithocarpus litseifolius after secondary rolling are placed into a fixation machine for drying, and one-time drying is adopted during drying, wherein the drying temperature is 240 ℃, and the drying time is 20 min; during forming, the Lithocarpus litseifolius leaves are immediately formed in small gears after being formed in large gears, and no cooling link exists in the process.

The Lithocarpus litseifolius bead-shaped tea prepared in example 4 is shown in figure 2.

Comparative example: a preparation method of Lithocarpus litseifolius sweet tea (an example of patent application No. 201810910053.5) comprises the following steps:

s1: collecting tender leaves of Lithocarpus litseifolius as tea raw materials, and spreading for cooling;

s2: carrying out primary enzyme deactivation treatment on the spread and cooled tea leaves, wherein the pot temperature of the primary enzyme deactivation is 380 ℃, carrying out enzyme deactivation for 7 minutes, and then spreading for cooling;

s3: the completely cooled tea leaves are subjected to primary deblocking and dispersion and then primary rolling treatment;

s4: carrying out secondary de-enzyming, secondary deblocking and secondary rolling treatment on the tea leaves subjected to the primary rolling, wherein the temperature of a secondary de-enzyming pot is 280 ℃, and de-enzyming is carried out for 5 minutes;

s5: and (3) drying, forming, roasting, aroma-raising drying, screening and boxing the twice-twisted tea leaves in sequence.

The harvesting in step S1 specifically includes the following steps: the tender leaves which are soft, smooth and not hard are selected to be picked manually in cloudy and sunny days, the tender leaves are picked by utilizing a ventilated bamboo weaving tool for containing, and the tender leaves cannot be pressurized during containing, and the fresh leaves are sent to a tea factory for spreading for cooling in time after being filled with the fresh leaves, so that the phenomenon of heating is avoided.

The step S1 of spreading and cooling specifically includes the following steps: and uniformly spreading the picked fresh leaves on a ventilation net rack, wherein the thickness of the fresh leaves is 5 centimeters, spreading and cooling the fresh leaves for 5 hours to avoid heating, and turning the leaves in the middle for 2-3 times.

The step S3 specifically includes the following steps:

primary deblocking: fully deblocking and dispersing the completely spread and cooled tea leaves on a deblocking machine until no block is formed;

primary rolling: and (3) rolling the tea leaves subjected to primary deblocking in a rolling machine for 13 minutes, wherein the pressure cannot be applied, and the rolling speed is 35 revolutions per minute.

In the step S4, the time for the second rolling is 10 minutes, and it is ensured that the pressure cannot be applied; the twisting speed is 30 revolutions per minute.

In step S5, the drying specifically includes the following steps: drying the twice-twisted tea leaves in a de-enzyming machine with medium fire, controlling the pot temperature at 260 ℃, drying until the tea leaves are held by hands to be agglomerated and then released, and taking the tea leaves out of the pot, wherein the water content is 20%.

Molding: the tea is made into bead tea, the dried tea is poured into a Quhao tea machine to be baked and molded, the temperature is controlled to be 150-180 ℃, the tea is firstly operated for 20-30 minutes in a small gear and in a small amplitude, and then operated for 40-50 minutes in a large gear until the tea is basically in a round bead shape.

Roasting: and (4) heating the tea in a water-removing machine at the pot temperature of 180-200 ℃ for 20-30 minutes until the tea beads show brightness.

Aroma raising and drying: working in a fragrance-extracting dryer for 40 minutes, setting the temperature at 80 ℃, and then working at 70 ℃ for 30 minutes to finish drying.

The Lithocarpus litseifolius sweet tea prepared by the comparative example is shown in figure 3.

The fresh leaves of lithocarpus litseifolius in examples 1-4 and comparative example are picked in the same batch.

The content of trilobatin in the lithocarpus litseifolius leaves before and after drying in example 1, example 3 and the comparative example is detected by adopting a high performance liquid chromatography (the specific method refers to the content determination research of phloridzin and trilobatin in lithocarpus litseifolius (Zhang Asia, Tao, Zhu Jing, Liu, Zhou Fu Cai, Wang Qiang, Liu Xue, Liu Chong, Wang Qiang).

From the experimental data it can be seen that: the content of trilobatin in the examples 1 and 3 before drying is much higher than that in the comparative example, and after long-time drying, the content difference of trilobatin in the examples 1 and 3 and the comparative example is small, and the three have good mouthfeel. As can also be seen from the attached drawings 1-3, compared with the comparative example, the lithocarpus litseifolius bead-shaped tea prepared in example 1 is more uniform, has more full particles and smaller particle size difference; the lithocarpus litseifolius bead-shaped tea prepared in example 4 is seriously damaged, and has small particles and large particle size difference; the lithocarpus litseifolius bead-shaped tea prepared by the comparative example is less damaged, but has poor forming effect and is loose.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.