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Black tea preparation technology

A production process, technology of black tea, applied in the direction of tea treatment before extraction, etc., can solve the problems of wilting and yellowing of tea leaves, affecting the quality of tea leaves, lack of luster, etc., achieve the effect of sweet taste, maintaining nutrients and aroma, and avoiding scorching

Active Publication Date: 2015-01-21
FUJIAN BIYEXIN TEA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a black tea production process aimed at the deficiencies of the above-mentioned prior art, which can overcome the problem that the tea leaves wilt, turn yellow, lose luster and affect the quality of the tea leaves due to the long withering time of the tea leaves

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of black tea production process, concrete steps are as follows:

[0024] 1) Solid aroma: freshly picked fresh tea leaves are quick-frozen for 30 seconds at -15°C;

[0025] 2) Withering: Put the tea leaves after the aroma-fixing treatment into a withering machine and lay them flat to wither, with a thickness of 10cm; first, cold air withering treatment, the withering temperature is set at 13°C, and the withering time is 2.5 hours; then hot air withering , the temperature was set at 37°C, and the withering time was 1.5 hours; after an interval of 1 hour, hot air withering was performed, the temperature was set at 37°C, and the withering time was 1.5 hours; during the withering period, the tea leaves were turned every 15 minutes;

[0026] 3) Kneading: use the 6CR-55 kneading machine to knead the withered tea leaves without pressure, with a load of 30kg per tube, the kneading machine speed is 35 rpm, and the duration is 0.5 hours;

[0027] 4) Fermentation: use the f...

Embodiment 2

[0031] A kind of black tea production process, concrete steps are as follows:

[0032] 1) Fragrance fixation: freshly picked fresh tea leaves are quick-frozen for 40 seconds at -20°C;

[0033] 2) Withering: Put the tea leaves after the aroma-fixing treatment into a withering machine and lay them flat to wither, with a thickness of 10 cm; first, cold air withering treatment, the withering temperature is set at 8°C, and the withering time is 1 hour; then hot air withering , the temperature is set at 40°C, and the withering time is 1 hour; after an interval of 1 hour, hot air withering is performed, the temperature is set at 40°C, and the withering time is 1 hour; during the withering period, the tea leaves are turned every 15 minutes

[0034] 3) Kneading: use the 6CR-55 kneading machine to knead the withered tea leaves without pressure, with a load of 30kg per tube, the kneading machine speed is 35 rpm, and the duration is 0.5 hours;

[0035] 4) Fermentation: use the fermentati...

Embodiment 3

[0039] A kind of black tea production process, concrete steps are as follows:

[0040] 1) Solid aroma: freshly picked fresh tea leaves are quick-frozen for 30 seconds at -15°C;

[0041] 2) Withering: Put the tea leaves after the aroma-fixing treatment into a withering machine and lay them flat to wither, with a thickness of 8cm; first, cold air withering treatment, the withering temperature is set at 10°C, and the withering time is 2 hours; then hot air withering , the temperature is set at 35°C, and the withering time is 2 hours; after an interval of 1 hour, hot air withering is performed, the temperature is set at 35°C, and the withering time is 2 hours; during the withering period, the tea leaves are turned every 15 minutes

[0042] 3) Kneading: use the 6CR-55 kneading machine to knead the withered tea leaves without pressure, with a load of 30kg per tube, the kneading machine speed is 35 rpm, and the duration is 0.5 hours;

[0043] 4) Fermentation: use the fermentation an...

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Abstract

The invention discloses a black tea preparation technology. The black tea preparation technology comprises the steps of fragrance lasting, withering, twisting, fermenting and drying. According to the invention, fresh tea leaves are subjected to fragrance lasting treatment firstly at low temperature, so that nutritional components and fragrance are retained in the tea leaves well, and the prepared tea leaves keep certain luster; cold air and hot air are alternatively used for withering so as to prevent the tea leaves from being withered too rapidly, the withering time is short, the physicochemical change is intense, the tooth-tip-shaped leaf edges are prevented from being dried up and even are free of red stain; in the drying procedure, moisture in the tea leaves is evaporated, and particles are tightened, so that the fragrance of the tea leaves is increased; in the whole technological preparation process, the tea leaves are treated by the fragrance lasting procedure and subsequently are subjected to withering, twisting, fermenting and drying procedures, and are prevented from being treated at high temperature for a long time during all the procedures, so that the prepared tea leaves have luster and tea soup is heavy in fragrance, and mellow in taste.

Description

technical field [0001] The invention belongs to the field of tea oxidation and fermentation treatment before extraction, and in particular relates to a black tea production process. Background technique [0002] Black tea is one of the six major teas in China. It belongs to fermented tea. It is a common health care tea drink in my country. It can be seen everywhere in people's daily life. Each kind of tea has a different production process. The traditional production process of black tea generally includes four steps: withering, rolling, fermenting and drying. After withering, the water can be properly evaporated, the leaves are soft, the toughness is enhanced, and it is easy to shape. Generally, indoor natural withering is used for withering. At room temperature 20-24 ℃, relative humidity 60%-70%, withering for about 18 hours, through opening and closing The method of doors and windows is used to adjust the temperature and humidity. During the withering process, the smell ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/06A23F3/08
Inventor 廖翌祖陈维森
Owner FUJIAN BIYEXIN TEA IND
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