阅读说明：本技术 一种圆柱形茶及其制备方法 (Cylindrical tea and preparation method thereof ) 是由 黄香武 李强有 高树促 于 2020-11-12 设计创作，主要内容包括：本发明公开了一种圆柱形茶及其制备方法,涉及茶叶制备技术领域,具体为包括S1、茶叶过滤除杂；S2、清洗除杂；S3、茶叶杀青；S4、茶叶揉捻；S5、茶叶干燥；S6、复蒸软化；S7、挤压成型和S8、干燥定型。该圆柱形茶及其制备方法,成型后的产品呈圆柱状且直径控制在5～15mm,方便人们适量掰取茶叶冲泡,防止掰取部位大量碎裂导致的茶叶浪费现象产生,同时采用高压蒸汽杀青,时间短,风味物质保留多,高压反应釜蒸汽杀青,由于采用密闭环境进行杀青,茶叶香气损失较少,茶叶蒸汽结合微波杀青,杀青速率快,均匀采用先增湿后常压蒸汽蒸,能实现茶叶吸水均匀,蒸煮过程中受热均匀,采用105～130℃饱和蒸汽蒸能快速穿透茶叶,缩短蒸煮时间。(The invention discloses cylindrical tea and a preparation method thereof, relates to the technical field of tea preparation, and particularly comprises S1 and tea filtering and impurity removing; s2, cleaning and removing impurities; s3, deactivating enzymes of the tea leaves; s4, rolling tea leaves; s5, drying the tea leaves; s6, re-steaming for softening; s7, extrusion forming and S8, drying and shaping. According to the cylindrical tea and the preparation method thereof, the formed product is cylindrical, the diameter is controlled to be 5-15 mm, people can conveniently take tea leaves off with the fingers and thumb in a proper amount to brew the tea leaves, the phenomenon of tea leaf waste caused by a large amount of broken parts can be prevented, high-pressure steam is adopted for enzyme deactivation, the time is short, more flavor substances are reserved, high-pressure reaction kettle steam is adopted for enzyme deactivation, the closed environment is adopted for enzyme deactivation, the tea leaf fragrance loss is less, tea leaf steam is combined with microwave for enzyme deactivation, the enzyme deactivation speed is high, humidification is uniformly adopted firstly, then normal-pressure steam steaming is uniformly adopted, the uniform water absorption of the tea leaves can be realized, the heating is uniform in the steaming process, the tea leaves can be rapidly penetrated by saturated steam at the temperature of.)

1. A cylindrical tea and a preparation method thereof are characterized in that: the method comprises the following operation steps:

s1, filtering and removing impurities from tea leaves:

airing the picked tea leaves, turning and filtering the tea leaves in a drum-type screen, and separating leaf stalks and dust particles on the surfaces of the tea leaves from the tea leaves;

s2, cleaning and impurity removing:

putting the filtered tea leaves into a bubbling type cleaning pool for cleaning and impurity removal;

s3, tea leaf fixation:

carrying out fixation on the tea leaves by adopting high-pressure steam fixation, high-pressure reaction kettle steam fixation and normal-pressure steam combined microwaves;

s4, rolling tea leaves:

kneading the tea leaves after the enzyme deactivation;

s5, drying tea leaves:

drying the rolled tea leaves in the modes of sun drying, hot air drying, heat pump drying and vacuum drying, and controlling the water content of the tea leaves to be 11%;

s6, re-steaming and softening:

re-steaming the tea leaves by adopting normal pressure steam at 100 ℃ or saturated steam at 105-130 ℃ to soften the tea leaves;

s7, extrusion forming:

placing the re-steamed tea leaves in a corresponding mould for extrusion forming;

s8, drying and shaping:

drying the extruded tea leaves by adopting a hot air drying and dehumidifying drying mode.

2. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in step S1, the drum screen has a hole of 2 to 6mm and the drum screen rotates at 2 to 8 revolutions per second.

3. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in the step S3, the high-pressure steam de-enzyming condition is 250-400 ℃, and the de-enzyming time is 0.5-3 min; the steam de-enzyming condition of the high-pressure reaction kettle is 105-140 ℃, and the de-enzyming time is 5-30 min; the steaming is carried out for 5-20 min under the condition of combining atmospheric steam with microwave enzyme deactivation and at the temperature of 100 ℃ of atmospheric steam; the temperature of the microwave drying material is 110-135 ℃, and the time is 1-5 min.

4. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in the step S5, the temperature of hot air drying, heat pump drying and vacuum drying is 55-75 ℃, the sun drying temperature is 25-30 ℃, and the humidity is controlled at 50-70%.

5. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in step S5, the dried tea leaves have a water content of 11%.

6. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in the step S6, humidifying for 0.5-2 h under the humidity of 95-100% during re-steaming, and then steaming for 1-10 min at 100 ℃ under normal pressure; or directly steaming the tea leaves for 1-5 min at 105-130 ℃ by saturated steam to soften the tea leaves.

7. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in the step S7, the mold is cylindrical, the aperture is 5-15 mm, and the length is 7-12 cm.

8. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in the step S8, the hot air drying temperature is 50-80 ℃; the dehumidifying and drying humidity is 30-75%, and the temperature is 25-40 ℃.

9. The cylindrical tea and the preparation method thereof according to claim 1, wherein: in the step S8, the moisture content of the dried tea leaves is 10%.

Technical Field

The invention relates to the technical field of tea preparation, in particular to cylindrical tea and a preparation method thereof.

Background

Tea, commonly known as tea, generally comprises leaves and buds of tea trees, and tea components comprise catechin, cholestenone, caffeine, inositol, folic acid and pantothenic acid, and are beneficial to health. A tea beverage made of tea leaves is a round cake-shaped tea cake which is usually made of tea leaves which are one of three major beverages in the world through the processes of enzyme deactivation, rolling, drying and the like.

The tea cake prepared by the existing tea preparation method is large in volume, and needs to be broken into pieces and taken a little for brewing when being drunk, but the periphery of the tea cake is broken in the breaking process, so that waste is caused, and the subsequent storage is not facilitated.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides cylindrical tea and a preparation method thereof, and solves the problems that the tea cake prepared by the existing tea preparation method in the background art is large in volume, needs to be broken into pieces and a small amount of tea is taken for brewing when being drunk, but the periphery of the tea cake is broken in the breaking process, so that waste is caused, and the subsequent storage is not facilitated.

In order to achieve the purpose, the invention is realized by the following technical scheme: a cylindrical tea and a preparation method thereof comprise the following operation steps:

s1, filtering and removing impurities from tea leaves:

airing the picked tea leaves, turning and filtering the tea leaves in a drum-type screen, and separating leaf stalks and dust particles on the surfaces of the tea leaves from the tea leaves;

s2, cleaning and impurity removing:

putting the filtered tea leaves into a bubbling type cleaning pool for cleaning and impurity removal;

s3, tea leaf fixation:

carrying out fixation on the tea leaves by adopting high-pressure steam fixation, high-pressure reaction kettle steam fixation and normal-pressure steam combined microwaves;

s4, rolling tea leaves:

kneading the tea leaves after the enzyme deactivation;

s5, drying tea leaves:

drying the rolled tea leaves in the modes of sun drying, hot air drying, heat pump drying and vacuum drying, and controlling the water content of the tea leaves to be 11%;

s6, re-steaming and softening:

re-steaming the tea leaves by adopting normal pressure steam at 100 ℃ or saturated steam at 105-130 ℃ to soften the tea leaves;

s7, extrusion forming:

placing the re-steamed tea leaves in a corresponding mould for extrusion forming;

s8, drying and shaping:

drying the extruded tea leaves by adopting a hot air drying and dehumidifying drying mode.

Optionally, in step S1, the drum screen has a pore size of 2 to 6mm, and the drum screen rotates at 2 to 8 revolutions per second.

Optionally, in the step S3, the high-pressure steam de-enzyming condition is 250 to 400 ℃, and the de-enzyming time is 0.5 to 3 min; the steam de-enzyming condition of the high-pressure reaction kettle is 105-140 ℃, and the de-enzyming time is 5-30 min; the steaming is carried out for 5-20 min under the condition of combining atmospheric steam with microwave enzyme deactivation and at the temperature of 100 ℃ of atmospheric steam; the temperature of the microwave drying material is 110-135 ℃, and the time is 1-5 min.

Optionally, in the step S5, the temperature of hot air drying, heat pump drying and vacuum drying is 55 to 75 ℃, the sun drying temperature is 25 to 30 ℃, and the humidity is controlled at 50 to 70%.

Optionally, in the step S5, the moisture content of the dried tea leaves is 11%.

Optionally, in the step S6, humidifying for 0.5-2 hours at 95-100% humidity during re-steaming, and then steaming for 1-10 min at 100 ℃ under normal pressure; or directly steaming the tea leaves for 1-5 min at 105-130 ℃ by saturated steam to soften the tea leaves.

Optionally, in the step S7, the mold is cylindrical, the aperture is 5-15 mm, and the length is 7-12 cm.

Optionally, in the step S8, the hot air drying temperature is 50 to 80 ℃; the dehumidifying and drying humidity is 30-75%, and the temperature is 25-40 ℃.

Optionally, in step S8, the moisture content of the dried tea leaves is 10%.

The invention provides cylindrical tea and a preparation method thereof, and the cylindrical tea has the following beneficial effects:

according to the cylindrical tea and the preparation method thereof, picked tea leaves are screened, so that the influence of impurities on processing production can be avoided, the quality of the product is finally improved, the formed product is cylindrical, the diameter of the formed product is controlled to be 5-15 mm, people can conveniently take and brew the tea leaves properly, the phenomenon of tea leaf waste caused by a large number of broken parts is prevented, high-pressure steam is adopted for enzyme deactivation, the time is short, more flavor substances are reserved, high-pressure reaction kettle steam is adopted for enzyme deactivation, the enzyme deactivation is carried out in a closed environment, the aroma loss of the tea leaves is less, the tea leaf steam is combined with microwave for enzyme deactivation, the enzyme deactivation speed is high, the tea leaves are uniformly subjected to humidification before normal-pressure steam steaming, the uniform water absorption of the tea leaves can be realized, the heating is uniform in the steaming process, 105-130 ℃ saturated steam can quickly penetrate through the.

Drawings

Figure 1 is a schematic view of the tea leaves of the present invention after being extruded into a cylindrical shape.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, the present invention provides a technical solution: a cylindrical tea and a preparation method thereof comprise the following operation steps:

s1, filtering and removing impurities from tea leaves:

airing the picked tea leaves, turning and filtering the tea leaves in a drum-type screen, and separating leaf stalks and dust particles on the surfaces of the tea leaves from the tea leaves;

s2, cleaning and impurity removing:

putting the filtered tea leaves into a bubbling type cleaning pool for cleaning and impurity removal;

s3, tea leaf fixation:

carrying out fixation on the tea leaves by adopting high-pressure steam fixation, high-pressure reaction kettle steam fixation and normal-pressure steam combined microwaves;

s4, rolling tea leaves:

kneading the tea leaves after the enzyme deactivation;

s5, drying tea leaves:

drying the rolled tea leaves in the modes of sun drying, hot air drying, heat pump drying and vacuum drying, and controlling the water content of the tea leaves to be 11%;

s6, re-steaming and softening:

re-steaming the tea leaves by adopting normal pressure steam at 100 ℃ or saturated steam at 105-130 ℃ to soften the tea leaves;

s7, extrusion forming:

placing the re-steamed tea leaves in a corresponding mould for extrusion forming;

s8, drying and shaping:

drying the extruded tea leaves by adopting a hot air drying and dehumidifying drying mode.

In step S1, the drum screen has a hole of 2 to 6mm and the drum screen rotates at 2 to 8 revolutions per second.

In the step S3, the high-pressure steam de-enzyming condition is 250-400 ℃, and the de-enzyming time is 0.5-3 min; the steam de-enzyming condition of the high-pressure reaction kettle is 105-140 ℃, and the de-enzyming time is 5-30 min; the steaming is carried out for 5-20 min under the condition of combining atmospheric steam with microwave enzyme deactivation and at the temperature of 100 ℃ of atmospheric steam; the temperature of the microwave drying material is 110-135 ℃, and the time is 1-5 min.

In the step S5, the temperature of hot air drying, heat pump drying and vacuum drying is 55-75 ℃, the sun drying temperature is 25-30 ℃, and the humidity is controlled at 50-70%.

In step S5, the dried tea leaves have a moisture content of 11%.

In the step S6, humidifying for 0.5-2 h under the humidity of 95-100% during re-steaming, and then steaming for 1-10 min at 100 ℃ under normal pressure; or directly steaming the tea leaves for 1-5 min at 105-130 ℃ by saturated steam to soften the tea leaves.

In step S7, the mold is cylindrical, the aperture is 5-15 mm, and the length is 7-12 cm.

In the step S8, the hot air drying temperature is 50-80 ℃; the dehumidifying and drying humidity is 30-75%, and the temperature is 25-40 ℃.

In step S8, the water content of the dried tea leaves is 10%;

according to the cylindrical tea and the preparation method thereof, picked tea leaves are screened, so that the influence of impurities on processing production can be avoided, the quality of the product is finally improved, the formed product is cylindrical, the diameter of the formed product is controlled to be 5-15 mm, people can conveniently take and brew the tea leaves properly, the phenomenon of tea leaf waste caused by a large number of broken parts is prevented, high-pressure steam is adopted for enzyme deactivation, the time is short, more flavor substances are reserved, high-pressure reaction kettle steam is adopted for enzyme deactivation, the enzyme deactivation is carried out in a closed environment, the aroma loss of the tea leaves is less, the tea leaf steam is combined with microwave for enzyme deactivation, the enzyme deactivation speed is high, the tea leaves are uniformly subjected to humidification before normal-pressure steam steaming, the uniform water absorption of the tea leaves can be realized, the heating is uniform in the steaming process, 105-130 ℃ saturated steam can quickly penetrate through the.

In conclusion, the cylindrical tea and the preparation method thereof comprise the following operation steps when in use:

s1, filtering and removing impurities from tea leaves: airing the picked tea leaves, turning and filtering the tea leaves in a drum-type screen, and separating leaf stalks and dust particles on the surfaces of the tea leaves from the tea leaves;

s2, cleaning and impurity removing: putting the filtered tea leaves into a bubbling type cleaning pool for cleaning and impurity removal;

s3, tea leaf fixation: carrying out fixation on the tea leaves by adopting high-pressure steam fixation, high-pressure reaction kettle steam fixation and normal-pressure steam combined microwaves;

s4, rolling tea leaves: kneading the tea leaves after the enzyme deactivation;

s5, drying tea leaves: drying the rolled tea leaves in the modes of sun drying, hot air drying, heat pump drying and vacuum drying, and controlling the water content of the tea leaves to be 11%;

s6, re-steaming and softening: re-steaming the tea leaves by adopting normal pressure steam at 100 ℃ or saturated steam at 105-130 ℃ to soften the tea leaves;

s7, extrusion forming: placing the re-steamed tea leaves in a corresponding mould for extrusion forming;

s8, drying and shaping: drying the extruded tea leaves by adopting a hot air drying and dehumidifying drying mode;

according to the cylindrical tea and the preparation method thereof, picked tea leaves are screened, so that the influence of impurities on processing production can be avoided, the quality of the product is finally improved, the formed product is cylindrical, the diameter of the formed product is controlled to be 5-15 mm, people can conveniently take and brew the tea leaves properly, the phenomenon of tea leaf waste caused by a large number of broken parts is prevented, high-pressure steam is adopted for enzyme deactivation, the time is short, more flavor substances are reserved, high-pressure reaction kettle steam is adopted for enzyme deactivation, the enzyme deactivation is carried out in a closed environment, the aroma loss of the tea leaves is less, the tea leaf steam is combined with microwave for enzyme deactivation, the enzyme deactivation speed is high, the tea leaves are uniformly subjected to humidification before normal-pressure steam steaming, the uniform water absorption of the tea leaves can be realized, the heating is uniform in the steaming process, 105-130 ℃ saturated steam can quickly penetrate through the.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.