Processing technology of health-preservation black tea

Abstract

The invention discloses a processing technology of health-preservation black tea. The processing technology comprises the following steps of (1) performing picking: picking spring tea; step (2), performing spreading; step (3), performing withering; step (4) performing plasma electrode induction: placing withered fresh leaves obtained in the step (3) in bottom electrode mediums of a plasma device, and performing illumination under the operating condition of voltage being 8kV, electric current being 1.0mA and gap being 3mm for 15-25 seconds; step (5) performing twisting; step (6) performing fermentation; and step (7), performing baking by a pseudo hot isostatic pressing method, wherein baking by the pseudo hot isostatic pressing method is also called as vacuum pan type baking, namely a manner of placing a crucible under vacuum environment using aluminum oxide ceramic as pressure transmission mediums for baking, controlling the temperature of the vacuum pan type baking to be 60-80 DEG C and controlling the time to be 45-75 minutes, then through a conveyor belt, enabling fresh leaves to pass through an air conditioning room for spreading for cooling, and slowly reducing the temperature to 15-25 DEG C. According to the processing technology disclosed by the invention, through the adoption of the preparation method of the black tea, the content of theaflavin is increased, original flavor of the black tea is maintained, besides, the fragrance and the mouth feel of tea leaves are improved, and actual drinking needs are met.

Description

technical field

[0001] The invention relates to a processing technology of health-preserving black tea, which belongs to the technical field of black tea production. Background technique

[0002] Black tea, English is Black tea. During the processing of black tea, a chemical reaction centered on the enzymatic oxidation of tea polyphenols occurred, and the chemical components in the fresh leaves changed greatly. The tea polyphenols were reduced by more than 90%, and new components such as theaflavins and thearubigins were produced. . The aroma substances are significantly increased compared with fresh leaves, so black tea has the characteristics of black tea, red soup, red leaves, sweet and mellow. Among the black tea varieties in my country, Keemun black tea is the most famous and the second largest tea in my country. Black tea is a fully fermented tea, which is refined from suitable new tea leaves as raw materials through a series of processes such as withering, rolling ...

Examples

Embodiment 1

[0021] The processing technology of a kind of health-preserving black tea described in the present embodiment comprises the following steps:

[0022] Step (1) Picking: Picking spring tea, the picking label is mainly one bud and one leaf, one bud and two leaves;

[0023] Step (2) Spreading: Spread the fresh leaves on a bamboo mat with a thickness of 2cm, spread for 8 hours, and turn it gently every 20 minutes;

[0024] Step (3) Withering: Put the fresh leaves into the withering tank with a thickness of 2cm, a temperature of 20°C, a shelf time of 4 hours, and turn it every 15 minutes;

[0025] Step (4) Plasma electrode induction: wherein, place the withered fresh leaves obtained in step (3) on the lower electrode medium of the plasma device, and irradiate for 15 seconds under the operating conditions of voltage 8kV, current 1.0mA, and gap 3mm;

[0026] Step (5) Kneading: kneading by hand, stop kneading when the tea juice overflows and becomes slightly striped;

[0027] Step (6...

Embodiment 2

[0033] The processing technology of a kind of health-preserving black tea described in the present embodiment comprises the following steps:

[0034] Step (1) Picking: Picking spring tea, the picking label is mainly one bud and one leaf, one bud and two leaves;

[0035] Step (2) Spreading: Spread fresh leaves on a bamboo mat with a thickness of 2.5cm, spread for 10 hours, and turn it gently every 20 minutes;

[0036] Step (3) Withering: Put the fresh leaves into the withering tank with a thickness of 2.5cm, a temperature of 23°C, a shelf time of 5 hours, and turn it every 15 minutes;

[0037] Step (4) Plasma electrode induction: where the withered fresh leaves obtained in step (3) are placed on the lower electrode medium of the plasma device, and irradiated for 20 seconds under the operating conditions of voltage 8kV, current 1.0mA, and gap 3mm;

[0038] Step (5) Kneading: kneading by hand, stop kneading when the tea juice overflows and becomes slightly striped;

[0039] Ste...

Embodiment 3

[0045] The processing technology of a kind of health-preserving black tea described in the present embodiment comprises the following steps:

[0046] Step (1) Picking: Picking spring tea, the picking label is mainly one bud and one leaf, one bud and two leaves;

[0047] Step (2) Spreading: Spread the fresh leaves on a bamboo mat with a thickness of 3cm, spread for 12 hours, and turn it gently every 20 minutes;

[0048] Step (3) Withering: Put the fresh leaves into the withering tank with a thickness of 3cm, a temperature of 26°C, a shelf time of 6 hours, and turn it every 15 minutes;

[0049]Step (4) Plasma electrode induction: where the withered fresh leaves obtained in step (3) are placed on the lower electrode medium of the plasma device, and irradiated for 25 seconds under the operating conditions of voltage 8kV, current 1.0mA, and gap 3mm;

[0050] Step (5) Kneading: kneading by hand, stop kneading when the tea juice overflows and becomes slightly striped;

[0051] Step...

technical field

[0001] The invention relates to a processing technology of health-preserving black tea, which belongs to the technical field of black tea production. Background technique

[0002] Black tea, English is Black tea. During the processing of black tea, a chemical reaction centered on the enzymatic oxidation of tea polyphenols occurred, and the chemical components in the fresh leaves changed greatly. The tea polyphenols were reduced by more than 90%, and new components such as theaflavins and thearubigins were produced. . The aroma substances are significantly increased compared with fresh leaves, so black tea has the characteristics of black tea, red soup, red leaves, sweet and mellow. Among the black tea varieties in my country, Keemun black tea is the most famous and the second largest tea in my country. Black tea is a fully fermented tea, which is refined from suitable new tea leaves as raw materials through a series of processes such as withering, rolling ...

Examples

Embodiment 1

[0021] The processing technology of a kind of health-preserving black tea described in the present embodiment comprises the following steps:

[0022] Step (1) Picking: Picking spring tea, the picking label is mainly one bud and one leaf, one bud and two leaves;

[0023] Step (2) Spreading: Spread the fresh leaves on a bamboo mat with a thickness of 2cm, spread for 8 hours, and turn it gently every 20 minutes;

[0024] Step (3) Withering: Put the fresh leaves into the withering tank with a thickness of 2cm, a temperature of 20°C, a shelf time of 4 hours, and turn it every 15 minutes;

[0025] Step (4) Plasma electrode induction: wherein, place the withered fresh leaves obtained in step (3) on the lower electrode medium of the plasma device, and irradiate for 15 seconds under the operating conditions of voltage 8kV, current 1.0mA, and gap 3mm;

[0026] Step (5) Kneading: kneading by hand, stop kneading when the tea juice overflows and becomes slightly striped;

[0027] Step (6...

Embodiment 2

[0033] The processing technology of a kind of health-preserving black tea described in the present embodiment comprises the following steps:

[0034] Step (1) Picking: Picking spring tea, the picking label is mainly one bud and one leaf, one bud and two leaves;

[0035] Step (2) Spreading: Spread fresh leaves on a bamboo mat with a thickness of 2.5cm, spread for 10 hours, and turn it gently every 20 minutes;

[0036] Step (3) Withering: Put the fresh leaves into the withering tank with a thickness of 2.5cm, a temperature of 23°C, a shelf time of 5 hours, and turn it every 15 minutes;

[0037] Step (4) Plasma electrode induction: where the withered fresh leaves obtained in step (3) are placed on the lower electrode medium of the plasma device, and irradiated for 20 seconds under the operating conditions of voltage 8kV, current 1.0mA, and gap 3mm;

[0038] Step (5) Kneading: kneading by hand, stop kneading when the tea juice overflows and becomes slightly striped;

[0039] Ste...

Embodiment 3

[0045] The processing technology of a kind of health-preserving black tea described in the present embodiment comprises the following steps:

[0046] Step (1) Picking: Picking spring tea, the picking label is mainly one bud and one leaf, one bud and two leaves;

[0047] Step (2) Spreading: Spread the fresh leaves on a bamboo mat with a thickness of 3cm, spread for 12 hours, and turn it gently every 20 minutes;

[0048] Step (3) Withering: Put the fresh leaves into the withering tank with a thickness of 3cm, a temperature of 26°C, a shelf time of 6 hours, and turn it every 15 minutes;

[0049]Step (4) Plasma electrode induction: where the withered fresh leaves obtained in step (3) are placed on the lower electrode medium of the plasma device, and irradiated for 25 seconds under the operating conditions of voltage 8kV, current 1.0mA, and gap 3mm;

[0050] Step (5) Kneading: kneading by hand, stop kneading when the tea juice overflows and becomes slightly striped;

[0051] Step...