Method for carrying out liquid fermentation to produce pu'er tea powder employing fresh leaves as raw material

A technology of liquid fermentation and Pu-erh tea, applied in the direction of tea extraction, can solve the problems of inability to automatically control the fermentation process, unstable product quality, long fermentation cycle, etc., and achieve the effects of high degree of automation, reduced labor intensity and energy saving.

Active Publication Date: 2015-09-30
TIANJIN TASLY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as a traditional fermented tea production method, the solid-state fermentation process has disadvantages such as l...

Method used

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  • Method for carrying out liquid fermentation to produce pu'er tea powder employing fresh leaves as raw material
  • Method for carrying out liquid fermentation to produce pu'er tea powder employing fresh leaves as raw material
  • Method for carrying out liquid fermentation to produce pu'er tea powder employing fresh leaves as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Take 500g of fresh Pu-erh tea leaves. Firstly, wash the fresh leaves according to fresh tea leaves: water = 5:10 (weight to volume ratio). The roasted tea leaves are directly pulverized. Add distilled water to the crushed green leaves according to the ratio of tea to water 5:30 (after green tea: water, weight-to-volume ratio), stir well, boil at normal pressure for 2 times, each time for about 5 minutes, and filter through filter cloth to obtain the boiling extract of tea leaves. After the boiling extract is cooled to room temperature, add the bacteria washing liquid, mix and stir evenly for liquid fermentation, the fermentation temperature is 30°C, the fermentation time is about 4 days, and then the temperature is adjusted to 50°C for 2 days of fermentation, and the fermentation liquid is obtained after the fermentation is completed. The obtained fermented liquid was sterilized by boiling water for 5 minutes, centrifuged at 10,000 rpm for 10 minutes to obtain fermented...

Embodiment 2

[0050] Take 500g of fresh Pu’er tea leaves, first wash the fresh leaves according to fresh tea leaves: water = 3:10 (weight to volume ratio), after washing the fresh leaves, remove the green leaves, and remove the green leaves in a boiling water bath for 15 seconds, take them out and dry the fresh leaves Surface moisture back up. The tea leaves after fishing are directly crushed. Add distilled water to the crushed green leaves according to the ratio of tea to water 3:30 (after green tea: water, weight-to-volume ratio), stir well, boil at normal pressure for about 10 minutes, and filter through a filter cloth to obtain the boiling extract of tea leaves. After the boiling extract is cooled to room temperature, add the bacteria washing solution, mix and stir evenly for liquid fermentation, the fermentation temperature is 40°C, the fermentation time is about 5d, and the temperature is adjusted to 60°C for 3d fermentation, and the fermentation liquid is obtained after the fermentatio...

Embodiment 3

[0052] Take 500g of fresh Pu’er tea leaves, first wash the fresh leaves according to fresh tea: water = 6:10 (weight to volume ratio), steam the fresh leaves after washing, steam the greens in a boiling water bath for 30 seconds, take them out and dry the fresh leaves Surface moisture back up. The steamed tea leaves are directly pulverized. Add distilled water to the crushed green leaves according to the ratio of tea to water 6:30 (after green tea: water, weight-to-volume ratio), stir well, boil at normal pressure for about 8 minutes, and filter through filter cloth to obtain tea extract. After the boiling extract is cooled to room temperature, add the bacteria washing liquid, mix and stir evenly for liquid fermentation, the fermentation temperature is 50°C, the fermentation time is about 7d, and the temperature is adjusted to 70°C for 4d fermentation, and the fermentation liquid is obtained after the fermentation is completed. The obtained fermented liquid was sterilized by ...

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Abstract

The invention relates to a method for carrying out liquid fermentation to produce pu'er tea powder employing fresh leaves as a raw material. The method comprises the following steps: cleaning bacteria on fresh tea leaves; removing impurities, and carrying out fixation to obtain a fermenting material; boiling, mixing a boiling liquid with a bacteria cleaning liquid, and carrying out liquid fermentation; inactivating, centrifuging or filtering the fermentation liquid; and concentrating and drying to obtain the pu'er tea powder.

Description

Technical field: [0001] The invention relates to a method for preparing Pu'er tea, in particular to a method for preparing instant Pu'er tea instant powder. The method uses fresh leaves as raw materials to carry out liquid fermentation to produce the Pu'er tea instant powder. Background technique: [0002] Pu'er tea, post-fermentation tea, the traditional production process (solid-state fermentation) includes: using the fresh leaves of the big-leaf tea tree in Yunnan as raw materials, sun-dried green tea of ​​various tenderness made through processes such as killing greens, rolling, and sun-drying, Using sun-dried green tea as raw material, it is artificially fermented ("wodui"), steamed and kneaded, and molded into finished Pu'er tea in various shapes. [0003] The stacking fermentation of Pu-erh tea is the key process of quality formation. It refers to stacking sun-dried green tea to a certain height and then sprinkling water, covering it with sackcloth to promote the acti...

Claims

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Application Information

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IPC IPC(8): A23F3/18
Inventor 徐咏全王超李长文刘顺航
Owner TIANJIN TASLY GROUP
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