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Production process of decaffeination tea

A technology for decaffeination and production process, which is applied to the technical field of producing decaffeinated tea by supercritical carbon dioxide extraction, can solve the problems of strong adsorption of activated carbon, long process extraction period, damage to tea characteristics, etc., and achieves high extraction rate. , the effect of short extraction cycle

Inactive Publication Date: 2010-07-28
GUIZHOU TAIBO BIO TECH
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  • Description
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Problems solved by technology

Although the aroma of tea can be retained, the selected activated carbon has strong adsorption and low selectivity, and it is easy to absorb the active ingredients in the tea and destroy the characteristics of the tea; at the same time, the extraction cycle of the process is long and the extraction efficiency is low

Method used

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  • Production process of decaffeination tea
  • Production process of decaffeination tea

Examples

Experimental program
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Effect test

Embodiment

[0018] Embodiment: choose the weight ratio of tea, water and carbon dioxide to be 1:0.2:10; first use the fumigation method to pretreat the tea leaves to make the water content reach 20%-30% and then put them into the extraction kettles 9 and 10; The temperature of the section: the mixer 8 is at 50°C-80°C, the extraction kettles 9 and 10 are at 30°C-60°C, the separation kettles 11 and 12 are at 50°C-55°C, and the water vapor separation kettle 13 is at -5°C-0°C; After the temperature of each section is reached, turn on the entrainer pump 6, pass the water in the distilled water tank 5 into the mixer 8, open the gas cylinder 1 at the same time, turn on the main pump 4, and pass the carbon dioxide stored in the storage tank 3 in the freezer 2 into the mixer 8. In the mixer 8, the supercritical carbon dioxide is fully contacted with the filler and water in the mixer 8 to achieve saturation. Then the saturated supercritical carbon dioxide and water are passed into the extraction ke...

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Abstract

The invention discloses a production process of decaffeination tea, which is characterized in that a supercritical carbon dioxide extraction method is utilized for producing the decaffeination tea, water is added into the supercritical carbon dioxide for preparing entrainers, 90 percent of caffeine in the tea can be extracted in a short time at a low temperature, the fragrance and tea polyphenol in the tea can be effectively protected, and the invention has the characteristics of high emersion rate, short extraction period, pure natural effect, no pollution and the like.

Description

technical field [0001] The invention relates to a process for producing decaffeinated tea leaves, in particular to a process for producing decaffeinated tea leaves by a supercritical carbon dioxide extraction method. Background technique [0002] People are accustomed to drinking tea because tea is rich in tea polyphenols that are easily soluble in hot water, which has the advantages of anti-oxidation and anti-tumor; at the same time, tea also contains caffeine, which is harmful to human health. With people's pursuit of high quality of life, there is an increasing demand for decaffeinated tea in the market; however, many known decaffeinated production processes use organic solvents, which are not only difficult to remove from tea, but also decaffeinated. Most of the aroma of tea has been removed; [0003] The patent specification CN85102970 discloses a production process for producing decaffeinated tea leaves by carbon dioxide extraction in a supercritical state. There is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/38
Inventor 代明权肖铭
Owner GUIZHOU TAIBO BIO TECH
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