A kind of fermenting method of Confucian black tea with oxygen and variable temperature and humidity

A technology of Gongfu black tea and variable temperature fermentation, which is applied in the direction of tea treatment before extraction, etc. It can solve the problems of quality damage of finished tea, failure to consider the fermentation process of aeration, temperature and humidity, and influence accumulation, so as to promote the formation of quality substances and prevent quality. Unfavorable substance formation, prevent excessive consumption

Active Publication Date: 2017-08-15
TEA RES INST CHINESE ACAD OF AGRI SCI
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Problems solved by technology

At present, Gongfu black tea production enterprises are gradually building special fermentation rooms. Heating and humidification devices are installed in the fermentation rooms to achieve continuous control of the ambient temperature and humidity. However, the existing relative humidity control has a large fluctuation range, and the fermentation temperature is only constant. Regulation does not take into account the fermentation process of changing temperature and humidity with oxygen, which affects the accumulation of theaflavin, thearubigin and other quality substances to a certain extent, and the quality of the finished tea is damaged

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  • A kind of fermenting method of Confucian black tea with oxygen and variable temperature and humidity

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Embodiment 1

[0013] (1) Pick 10kg of fresh leaves of the Fuding Dabai variety with a tenderness of 1 bud and 1 leaf to 1 bud and 2 leaves, and wither according to the traditional production process of Gongfu black tea (carry out in an artificial climate box, at a withering temperature of 23°C and a relative humidity 70%, under the conditions of light intensity 6000lx withering to moisture content 62%), kneading (6CR-35 kneading machine produced by Zhejiang Shangyang Machinery Co., Ltd., kneading time 45min, empty kneading 5min→light pressure 5min→heavy pressure 30min → Gently press for 5min) to deblock after processing.

[0014] (2) Fermentation was carried out in an artificial climate box (PRX-450D artificial climate box purchased from Ningbo Saifu Experimental Instrument Co., Ltd.), and the following treatments were set up respectively: ① normal oxygen low temperature and constant humidity fermentation, adjust the temperature of the artificial climate box to 30 ±0.5℃, relative humidity 9...

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Abstract

The invention provides a method of fermenting Gongfu black tea with oxygen, temperature, and humidity. The fresh leaves of Fuding Dabai with tenderness of 1 bud and 1 leaf to 1 bud and 2 leaves are selected for withering and rolling. Roughly control the temperature and humidity, and the inherent ideas of constant temperature and humidity fermentation, with the help of artificial climate chamber (artificial climate chamber) to precisely control the oxygen concentration, relative humidity and temperature of fermentation; High-temperature and low-humidity fermentation ensures the formation of quality substances such as theaflavins and thearubigins. In the later stage, nitrogen-passing low-temperature and high-humidity fermentation inhibits the conversion reaction of theaflavins to thearubigins and theabrownins, ensuring a high theaflavin content in the finished tea. Ensure the continuous conversion of other quality substances, and obtain black tea products with excellent sensory quality.

Description

technical field [0001] The invention belongs to the technical field of tea processing, and relates to black tea fermentation technology, in particular to a method for fermenting Gongfu black tea with oxygen, temperature, and humidity. Background technique [0002] Fermentation is the key process for the formation of the quality of Gongfu black tea. Traditional production is dominated by natural fermentation, that is, fermentation is carried out under natural environmental conditions without regulating the temperature and humidity of the fermentation environment. At present, Gongfu black tea production enterprises are gradually building special fermentation rooms. Heating and humidification devices are installed in the fermentation rooms to achieve continuous control of the ambient temperature and humidity. However, the existing relative humidity control has a large fluctuation range, and the fermentation temperature is only constant. Regulation does not take into account the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23F3/08
Inventor 江用文袁海波滑金杰尹军峰邓余良许勇泉
Owner TEA RES INST CHINESE ACAD OF AGRI SCI
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