Industrial production method of cold-soluble black tea powder

A production method and technology for black tea powder are applied in the field of production and preparation technology of cold-dissolving tea powder, which can solve the problems that tea powder cannot meet complete cold-dissolving, high production condition requirements, redissolving of tea cheese and the like, and achieve a simple and smooth production process. , Low production accuracy requirements, suitable for industrial production

Pending Publication Date: 2022-07-29
宝得瑞(湖北)健康产业有限公司 +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the yield of low-temperature extraction is low, resulting in the waste of tea, and the cost of enzymatic hydrolysis treatment is high, and the requirements for production conditions are relatively high, and the tea cheese in the tea soup is fine, suspended in the tea juice, and it is particularly difficult to completely remove it. It is very difficult to remove by membrane filtration, and it will also cause the temperature of the feed liquid to rise during the filtration process, and the phenomenon of back-melting of tea cheese will appear, so that the obtained tea powder cannot satisfy the complete cold-melt, so the development of cold-melt tea has caused great harm to industrial production. Therefore, the industrialized production method of cold-melt tea powder that simplifies the production process is imminent

Method used

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  • Industrial production method of cold-soluble black tea powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] a) After unpacking the 2t Dianhong tea leaves, grind them to 40 mesh with a pulverizer.

[0033] b) The crushed Dianhong tea leaves are fed into the countercurrent circulating extraction equipment, and the temperature of the circulating countercurrent extraction is controlled at 60°C; the feeding amount is controlled at 200kg per hour; the amount of water added is 3t per hour; and the extraction time is 30min. Extracted to obtain tea juice.

[0034] c) The tea juice obtained by extraction is cooled to 15°C by heat exchange, then calcium hydroxide is added to adjust the pH of the tea juice to 9, and the tea juice is allowed to settle for 30 minutes to precipitate the tea cheese.

[0035] d) Centrifuge the precipitation liquid disc to remove the precipitation, pump the tea juice into the vacuum tank, and charge the carbon dioxide to adjust the pH of the liquid. After the inflation is over, keep the pressure for 10-30min to allow the excess calcium to settle completely. ...

Embodiment 2

[0039] a) After unpacking 3 tons of Zhengshan Souchong black tea leaves, grind them to 60 mesh with a pulverizer.

[0040] b) Feeding the crushed Keemun black tea leaves into the countercurrent circulating extraction equipment, the temperature of the circulating countercurrent extraction is controlled at 80°C; the feeding amount is controlled at 250kg per hour; the water addition amount is 4t per hour; and the extraction time is 50min. Extracted to obtain tea juice.

[0041] c) The tea juice obtained by extraction is cooled to 5°C by heat exchange, then magnesium hydroxide is added to adjust the pH of the tea juice to 11, and it is left to settle for 60 minutes to precipitate the tea cheese.

[0042] d) After the precipitation liquid disc is centrifuged to remove the precipitation, the tea juice is pumped into a vacuum tank, and the pH of the material liquid is adjusted by charging carbon dioxide. After the aeration was completed, the pressure was maintained for 20 minutes to...

Embodiment 3

[0046] a) After unpacking 3 tons of Keemun black tea leaves, grind them to 50 mesh with a pulverizer.

[0047]b) Feed the crushed Keemun black tea leaves into the countercurrent circulating extraction equipment, and the temperature of the circulating countercurrent extraction is controlled at 70°C; the feeding amount is controlled at 300kg per hour; the water addition amount is 5t per hour; and the extraction time is 40min. Extracted to obtain tea juice.

[0048] c) The tea juice obtained by extraction is cooled to 25°C by heat exchange, then calcium hydroxide and magnesium hydroxide are added to mix precipitating agent at 1:1 (mass ratio), the pH of the tea juice is adjusted to 10, and the tea is allowed to settle for 45 minutes to precipitate the tea. cheese;

[0049] d) Centrifuge the precipitation liquid disc to remove the precipitation, pump the tea juice into a vacuum tank, and charge carbon dioxide to adjust the pH of the liquid. After the aeration is over, keep the p...

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Abstract

The invention discloses an industrial production method of cold-soluble black tea powder. Black tea is used as a raw material, tea leaves are extracted to obtain tea juice, a precipitant is added, tea cream is precipitated and then centrifugally removed, carbon dioxide is introduced to adjust the pH value of the tea juice, the tea juice is put into a vacuum tank and vacuumized to remove redundant carbon dioxide gas, and then the tea juice is filtered and clarified through a ceramic membrane. And after desalting with an electrodialysis membrane, concentrating with a reverse osmosis membrane, and spray-drying to obtain tea powder. According to the method, a chemical method is used for preparing the cold soluble tea, control and operation are easy, industrialization is easier to achieve, and the obtained instant tea powder can be completely dissolved in cold water at the temperature of about 10 DEG C and is clear and transparent; the total ash content of the product is less than 5%, which completely meets the standard of cold soluble tea. The obtained tea powder can be directly brewed for drinking, and can also be used as a raw material of a tea beverage.

Description

technical field [0001] The invention belongs to the field of fine processing of tea, and particularly relates to a production and preparation process of cold-dissolved tea powder. Background technique [0002] Black tea is a fully fermented tea, which is refined from a series of technological processes such as withering, rolling (cutting), fermentation, and drying, using the new teeth of suitable tea trees as raw materials. Black tea is mainly drunk in hot water, but it is time-consuming and labor-intensive, and tea residues must be processed later. Instant tea powder is made from tea leaves, which are extracted with water and then spray-dried. People can drink it by simply mixing with water, saving time and effort and being convenient to carry. The traditional instant tea powder is mainly made of hot water, but considering people's desire for cold drinks in summer and the demand for tea drinks, the pursuit of cold-dissolving tea powder has gradually emerged. However, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/18A23F3/28
CPCA23F3/18A23F3/28
Inventor 张志明谭志超张存存王辉斌万方云
Owner 宝得瑞(湖北)健康产业有限公司
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