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Black tea withering method

A technology for withering and black tea, applied in the field of black tea withering, can solve the problems of uneven withering, low quality and insufficient black tea, and achieve the effects of avoiding scorch of leaf tips, facilitating rolling and reducing tension.

Inactive Publication Date: 2014-09-10
GUIZHOU FENGGANG COUNTY QIANYUZHI ECO TEA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional withering method is to put the tea leaves in the room to wither naturally, which not only takes a long time, but also causes uneven and insufficient withering, and the quality of black tea produced is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] a. Spreading and withering: spread the tea leaves in the withering tank, and wither for 3-5 hours at a room temperature of 21-23°C and a relative humidity of 71-75%. The thickness of the tea leaves is 26-29cm. The water content is 63-65%;

[0018] b. Hot air withering: Put the spread and withered tea leaves into the withering machine for 46-49 minutes with hot air. The temperature of the hot air is 31-34°C. Turn it over every 16 minutes. The moisture content of the tea leaves after withering is 56-59%;

[0019] c, cold air withering: the tea leaves after hot air withering are carried out withering in cold air, the withering time is 35-49 minutes, turned once every 10 minutes, the water content of the tea leaves after withering in cold air is 53-55%.

Embodiment 2

[0021] a. Spreading and withering: spread the tea leaves in the withering tank, and wither for 3-5 hours at a room temperature of 22-24°C and a relative humidity of 73-76%. The thickness of the tea leaves is 27-32cm. The water content is 64-66%;

[0022] b. Hot air withering: Put the spread and withered tea leaves into the withering machine for 48-52 minutes with hot air, the temperature of the hot air is 31-34°C, turn it every 16 minutes, the thickness of the tea leaves is 21-24cm, the hot air The moisture content of the tea leaves after withering is 57-59%;

[0023] c, cold wind withering: the tea leaves after hot air withering are carried out cold wind withering, the withering time is 40-45 minutes, stir once every 10 minutes, the water content of the tealeaves after cold wind withering is 54-56%.

Embodiment 3

[0025] a. Spreading and withering: spread the tea leaves in the withering tank, and wither for 3-5 hours at a room temperature of 22-25°C and a relative humidity of 76-79%. The thickness of the tea leaves is 28-30cm, and the tea leaves after spreading The water content is 64-67%;

[0026] b. Hot air withering: Put the spread and withered tea leaves into the withering machine for 51-55 minutes with hot air, the temperature of the hot air is 31-34°C, turn it every 16 minutes, the thickness of the tea leaves is 21-24cm, and the hot air The moisture content of the tea leaves after withering is 57-59%;

[0027] c, cold air withering: the tea leaves after hot air withering are carried out withering in cold air, the withering time is 39-49 minutes, turned once every 10 minutes, the water content of the tea leaves after withering in cold air is 53-56%.

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Abstract

The invention discloses a black tea withering method. The black tea withering method comprises the following steps: spreading and withering, withering with hot air, and withering with cold air. Firstly, shrivelled leaf opexes caused by excessively fast withering can be effectively prevented due to spreading and withering, and then water in tea leaves can be rapidly evaporated through withering with hot air, the tension of tea cells is reduced, the toughness of buds is increased, the rolling of the tea is facilitated, the processing time is greatly reduced, the water in the tea can be enabled to be fully and uniformly distributed through the withering with cold air, and the foundation is laid for forming the high-quality black tea.

Description

technical field [0001] The invention relates to the field of tea processing, in particular to a black tea withering method. Background technique [0002] Withering refers to the process of dehydrating the fresh leaves that enter the factory after a period of time, so that the hard and brittle stalk leaves are wilted and withered. The purpose of withering is to evaporate part of the water, reduce the tension of the tea cells, and make the leaf stalks from Brittleness and softness increase the toughness of the buds and leaves, making it easier to knead into strips; second, a series of chemical changes in the substances contained in the tea shoots are caused by the loss of water, which lays the foundation for the formation of the specific quality of black tea color and aroma. Base. Withering has both the physical dehydration effect and the chemical change process of the contained substances. [0003] During withering, with the rapid loss of surface water, the concentration of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/06
Inventor 任斌刘顺桥罗幸怀任克江
Owner GUIZHOU FENGGANG COUNTY QIANYUZHI ECO TEA IND
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