CN111264645A - Processing method of flat yellow tea - Google Patents

Abstract

The invention relates to a processing method of flat yellow tea, which is characterized in that fresh tea tree leaves of standard one bud and one leaf tea trees are picked, the tea tree leaves are placed in a specific environment for a period of time, the placed fresh leaves are placed in a flat tea frying machine for primary frying, the fresh leaves are placed in a cotton bag when the tea tree leaves are hot after the tea tree leaves are placed, the cotton bag is subjected to yellow smoldering treatment and then is placed in the flat tea frying machine for secondary frying, after the tea tree leaves are subjected to moisture regain and curing treatment, roasting and baking treatment are sequentially performed, and the finished flat yellow tea is obtained after the tea tree leaves are cooled to normal temperature. The yellow tea obtained by the processing method of the deformed yellow tea has high theaflavin content, good appearance, straight and flat tea and golden color, the tea is yellow and bright after being soaked, tender fragrance is given out, the tea soup is sweet and mellow, and the tea leaf bottom is complete in shape and tender and yellow in color.

Description

A kind of processing method of flat yellow tea

technical field

The invention relates to the field of tea processing, in particular to a processing method of flat yellow tea.

Background technique

Yellow tea is one of the six major types of tea in China. It has a long history and profound cultural heritage. The unique yellowing process is unique in the treasure house of Chinese tea making techniques, making the tea sweet, rich in aroma, and apricot-yellow in soup. Yellow tea has both extravagance and elegance. Four advantages of good-looking, delicious and healthy. With the development of my country's economy, the scale of the tea industry continues to grow, and the output of yellow tea is also growing. The output of yellow tea in China has risen from 3,514 tons in 2015 to 7,952 tons in 2018, with a compound annual growth rate of 31.3%. , according to the growth rate of the six major tea categories.

At present, the shape of yellow tea in my country is generally needle bud shape and strip shape, and there is no flat yellow tea product. The invention combines the processing technology of Longjing tea and yellow tea, and uses an automatic flat tea frying machine to process yellow tea. The product is flat, smooth and straight in appearance, golden in color, rich in aroma, sweet in taste, and bright in apricot-yellow soup.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problem, the present invention adopts the following scheme:

A processing method of flat yellow tea, which is characterized in that comprising the following steps:

1) Use the method of picking to pick the fresh leaves of the small-leaf tea tree with one bud and one leaf in the standard spring, summer and autumn;

2) Spread the fresh leaves picked in step 1) thinly on a stainless steel wire mesh or nylon wire mesh, place it in an environment with an ambient temperature of 25-28°C and an ambient humidity of 60-75%, and spread it to a moisture content of 70-72% , time 6-16 hours;

3) Put the fresh leaves treated in step 2) into the feeding device of the flat tea frying machine;

4) Set the flat tea frying machine to prepare the frying program, set the frying temperature: 210-220°C, set: 100-125g of leaves per time, set: 25 circles in the first period, 20 circles in the second period, and the third period. The time period is 15 circles, the fourth period is 10 circles, and the material is discharged for 5 circles. The settings are: 6 levels of pressure in the first period, 8 levels of pressure in the second period, 10 levels of pressure in the third period, 14 levels of pressure in the fourth period, and 15 levels of discharge pressure. ;

5) When the temperature of the equipment reaches the set temperature in step 4), start frying according to the set procedure, and put the tea leaves after the pot is hot into the white cotton bag;

6) Put the white cotton bag containing the green leaves in step 5) into a black tea fermenter with an ambient temperature of 40-43°C and an ambient humidity of 90-95% using ultrasonic atomization and humidification for 20-24h to perform yellowing treatment;

7) Put the tea leaves that have undergone yellowing treatment in step 6) into the feeding device of the flat tea frying machine again;

8) Set the flat tea frying machine to prepare the frying program, set the frying temperature: 150~155°C, set: 150~180g of leaves per time, set: 30 circles in the first period, 25 circles in the second period, and the third period. 15 circles in the period, 10 circles in the fourth period, 5 circles of discharge, setting: pressure 8 in the first period, 10 pressure in the second period, 12 pressure in the third period, 14 pressure in the fourth period, and 15 pressure in the discharge period ;

9) When the temperature of the equipment reaches the temperature set in step 8), start frying according to the set procedure, and put the tea leaves after the pot is hot into a clean polyethylene bag for re-moisturizing and aging treatment for 6-8 hours;

10) Put the fresh leaves treated in step 9) into the tea-boiler machine, set the rotation speed: 28-30r/min, the first time period is 20min without heating, the second time period is 30-35min, and the set temperature is 150-155°C;

11) Spread the tea leaves treated in step 10) thinly, put them into a tea roasting machine, set the roasting temperature to 90°C, and bake for 25-30 minutes;

12) Take out the tea leaves treated in step 11) and cool to room temperature.

The processing method of the flat yellow tea is characterized in that in the step 2), the thinly spread thickness of the fresh leaves is 1-3 cm.

The processing method of the flat yellow tea is characterized in that in the step 3), the amount of fresh leaves put in is 1000-1250kg each time; in the step 7), the amount of the tea leaves that has undergone yellowing treatment is 1000-1250kg each time .

The processing method of the flat yellow tea is characterized in that the amount of fresh leaves treated in the step 10) is 4.5-5kg each time.

The processing method of the flat yellow tea is characterized in that in the step 11), the thinly spread thickness of the tea leaves is 2-3 cm.

The processing method of the flat yellow tea is characterized in that the flat tea frying machine in the step 3) and the step 7) is the 6CCB-981 flat tea frying machine produced by Zhejiang Yinqiu Machinery Co., Ltd.

The processing method of the flat yellow tea is characterized in that the tea-baking machine in the step 10) is a 6CMG-72 tea-baking machine produced by Zhejiang Yinqiu Machinery Co., Ltd.

The processing method of the flat yellow tea is characterized in that the tea roasting machine in the step 11) is a JY-6CHZ-7B tea roasting machine produced by Fujian Jiayou Tea Machinery Intelligent Technology Co., Ltd.

The processing method of the flat yellow tea has the following beneficial effects:

The yellow tea obtained by the processing method of deformed yellow tea of the present invention has high theaflavin content, flat, smooth and straight product appearance, golden color, rich aroma, sweet taste, and bright apricot-yellow soup color.

Detailed ways

The specific embodiments of the present invention are described in further detail below to make the technical solutions of the present invention easier to understand and grasp.

A processing method of flat yellow tea, comprising the following steps:

1) Using the method of picking, pick the fresh leaves of tea trees with one bud and one leaf in the standard of spring, summer and autumn;

2) Spread 1) 1-3CM of fresh leaves on a stainless steel wire mesh or nylon wire mesh, place it in an environment with an ambient temperature of 25-28°C and an ambient humidity of 60-75%, and spread it to a moisture content of 70-72%. The time is controlled within 6-16 hours;

3) Put 2) 1000-1250kg of fresh leaves into the feeding device of the 6CCB-981 flat tea frying machine produced by Zhejiang Yinqiu Machinery Co., Ltd.;

4) Prepare the frying program for the 6CCB-981 flat-shaped tea frying machine, set the frying temperature: 210-220°C, set: 100-125g of leaves per time, set: 25 circles in the first period, 20 circles in the second period , 15 circles in the third period, 10 circles in the fourth period, and 5 circles of discharge Pressure 15 gears;

5) When 4) the temperature of the equipment reaches the set temperature, start frying according to the set procedure, and put the tea leaves after the pot is hot into the white cotton bag;

6) Put 5) the white cotton cloth bag containing the green leaves into the black tea fermentation machine with an ambient temperature of 40-43 ° C and an ambient humidity of 90-95% using ultrasonic atomization and humidification for 20-24 hours for yellowing treatment;

7) Put 6) 1000-1250kg of tea leaves treated with yellowing into the feeding device of the 6CCB-981 flat tea frying machine produced by Zhejiang Yinqiu Machinery Co., Ltd.;

8) Prepare the frying program for the 6CCB-981 flat-shaped tea frying machine, set the frying temperature: 150-155°C, set: 150-180g of leaves per time, set: 30 circles in the first period, 25 circles in the second period , 15 circles in the third period, 10 circles in the fourth period, and 5 circles of discharge Pressure 15 gears;

9) When 4) the temperature of the equipment reaches the set temperature, start frying according to the set procedure, and put the tea leaves after the pot is hot into a clean polyethylene bag for re-moisturizing and aging treatment for 6-8h;

10) Put the fresh leaves treated in 9) into the 6CMG-72 tea pot maker produced by Zhejiang Yinqiu Machinery Co., Ltd. at a rate of 4.5-5kg each time. The rotation speed is 28-30r/min. The second period is 30-35min, and the set temperature is 150-155℃;

11) Spread the tea leaves treated in 10) thinly to 2-3cm, put them into the JY-6CHZ-7B tea roaster produced by Fujian Jiayou Tea Machinery Intelligent Technology Co., Ltd., set the temperature to 90°C, and bake for 25-30min;

12) Take out the tea leaves treated in 11), and after cooling to normal temperature, it is the finished product of flat yellow tea hair tea.

Theaflavins are an important physical and chemical indicator for the quality of yellow tea. The yellow tea soup with high content is yellow and bright, and the color, aroma, shape and quality of tea quality are related, so the shape, aroma, taste, and quality of leaf bottom are generally better.

The theaflavin content was detected on the yellow tea processed by different processes, and the detection results are shown in Table 1.

储叶齐12茶树品种不同工艺加工黄茶的茶黄素含量surface

Theaflavins Content of Yellow Tea Processed by Different Processes of Chuyeqi 12 Tea Tree Varieties

From the data in the above table, it can be known that the yellow tea prepared by the flat yellow tea processing method provided by the present invention has a higher theaflavin content than the yellow tea prepared by the traditional processing technology.

In addition, the sensory qualities of flat yellow tea processed by different flattening processes were compared, and the data in Table 2 were obtained.

平阳特早品种不同压扁工艺加工扁形黄茶感官品质比较surface

Comparison of Sensory Quality of Flat Yellow Tea Processed by Different Flattening Processes in Pingyang Extra-early Varieties

In conjunction with the data in Table 2, the yellow tea obtained by the processing method of deformed yellow tea of the present invention has a good appearance, the tea leaves are straight and flat and the color is golden, and the soup color is yellow and bright after being brewed, and a tender fragrance is emitted, and the soup water is glycolic, and The bottom of the leaves of the tea leaves are complete in shape and bright yellow in color.

The present invention has been exemplarily described above, it is obvious that the realization of the present invention is not limited by the above-mentioned manner, as long as various improvements made by the method concept and technical solution of the present invention are adopted, or the concept of the present invention and If the technical solution is directly applied to other occasions, it is all within the protection scope of the present invention.

Claims (8)

1. A processing method of flat yellow tea is characterized by comprising the following steps:

1) picking fresh tea tree leaves of one bud and one leaf according to the standards in spring, summer and autumn by using a extraction method;

2) spreading the fresh leaves picked in the step 1) on a stainless steel wire mesh or a nylon wire mesh, placing in an environment with the ambient temperature of 25-28 ℃ and the ambient humidity of 60-75%, and spreading until the water content is 70-72% for 6-16 hours;

3) putting the fresh leaves treated in the step 2) into a feeding device of a flat tea frying machine;

4) arranging a flat tea frying machine to compile a frying program, and setting a frying temperature: 210-220 ℃, setting: the leaf feeding amount is 100-125g each time, and the following settings are set: 25 rings of first interval, 20 rings of second interval, 15 rings of third interval, 10 rings of fourth interval, 5 rings of ejection of compact, the setting: the pressure in the first period is 6 grades, the pressure in the second period is 8 grades, the pressure in the third period is 10 grades, the pressure in the fourth period is 14 grades, and the discharge pressure is 15 grades;

5) when the temperature of the equipment reaches the set temperature in the step 4), frying according to a set program, and putting the tea leaves taken out of the pot into a white cotton cloth bag while the tea leaves are hot;

6) putting the white cotton cloth bag filled with the fixation leaves in the step 5) into a black tea fermentation machine which is humidified by ultrasonic atomization and has the ambient temperature of 40-43 ℃ and the ambient humidity of 90-95% for 20-24h for carrying out yellow sealing treatment;

7) putting the tea subjected to the yellow-smoldering treatment in the step 6) into a feeding device of the flat tea frying machine again;

8) arranging a flat tea frying machine to compile a frying program, and setting a frying temperature: setting the following steps at 150-155 ℃: the leaf feeding amount is 150-180g each time, and the setting is as follows: 30 rings in first period, 25 rings in second period, 15 rings in third period, 10 rings in fourth period, 5 rings in ejection of compact, set up: the pressure of the first time interval is 8 grades, the pressure of the second time interval is 10 grades, the pressure of the third time interval is 12 grades, the pressure of the fourth time interval is 14 grades, and the discharging pressure is 15 grades;

9) when the temperature of the equipment reaches the temperature set in the step 8), frying according to a set program, and putting the tea leaves taken out of the pot into a clean polyethylene bag for moisture regain and curing for 6-8 hours;

10) putting the fresh leaves treated in the step 9) into a tea roasting machine, and setting the rotating speed: 28-30r/min, wherein the first time period is 20min without heating, the second time period is 30-35min, and the setting temperature is 150-;

11) spreading the tea leaves treated in the step 10) thinly, putting the tea leaves into a tea leaf baking machine, setting the baking temperature at 90 ℃, and baking for 25-30 min;

12) taking out the tea leaves treated in the step 11), and cooling to the normal temperature.

2. The processing method of flat yellow tea as claimed in claim 1, wherein the thickness of the fresh leaves in the step 2) is 1-3 cm.

3. The method for processing flat yellow tea as claimed in claim 1, wherein the amount of fresh leaves put in step 3) is 1000-1250kg each time; the adding amount of the tea subjected to the yellow-sealing treatment in the step 7) is 1000-1250kg each time.

4. The processing method of flat yellow tea as claimed in claim 1, wherein the amount of the fresh leaves treated in the step 10) is 4.5 to 5kg per time.

5. The method for processing flat yellow tea as claimed in claim 1, wherein the spread thickness of the tea leaves in the step 11) is 2-3 cm.

6. The method for processing flat yellow tea as claimed in claim 1, wherein the flat tea frying machine in the steps 3) and 7) is a 6CCB-981 flat tea frying machine manufactured by silver ball machinery of Zhejiang.

7. The method for processing flat yellow tea as claimed in claim 1, wherein the tea-leaf roasting machine in the step 10) is a 6CMG-72 type tea-leaf roasting machine manufactured by tsiang ball mechanical ltd.

8. The method for processing flat yellow tea as claimed in claim 1, wherein the tea baking machine in the step 11) is a JY-6CHZ-7B tea baking machine manufactured by fujiayou tea mechanical intelligence science and technology ltd.