Tea extracting solution and preparation method thereof

A technology of tea extract and tea leaves, which is applied in tea extraction, tea, food science, etc., can solve the problems of unreported bitterness and astringency, few applications, etc., and achieve the effects of non-toxic activity, high catalytic efficiency, and adjustable activity

Active Publication Date: 2017-01-04
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the research on the application of tannase focuses on the removal of "cold muddy" in black tea beverages and the improvement of the cold capacity of instant tea

Method used

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  • Tea extracting solution and preparation method thereof
  • Tea extracting solution and preparation method thereof
  • Tea extracting solution and preparation method thereof

Examples

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Embodiment 1

[0049] An embodiment of the tea extract of the present invention and its preparation method, the preparation method of the tea extract described in this embodiment comprises the following steps:

[0050] (1) Take Fenghuang Dancong tea and pulverize it to obtain pulverized tea leaves;

[0051] (2) Water-bath extraction: add water to the pulverized tea leaves obtained in step (1), the mass ratio of tea leaves to water is 1:10, and extract in a water bath at a temperature of 80°C for 15 minutes to obtain a water extract;

[0052] (3) Enzymolysis: cooling the water extract obtained in step (2), then adding tannase to the water extract, enzymolysis for 1 hour, then adding ProteAX protease and cellulase, and continuing enzymolysis for 2 hours, The enzymolysis temperature is 40°C; wherein, the mass percentage of ProteAX protease and tea leaves is 1.1%, the mass percentage of cellulase and tea leaves is 1.5%, and the mass percentage of tannase and tea leaves is 1.5%;

[0053] (4) Enz...

Embodiment 2

[0055] An embodiment of the tea extract of the present invention and its preparation method, the preparation method of the tea extract described in this embodiment comprises the following steps:

[0056] (1) Take Fenghuang Dancong tea and pulverize it to obtain pulverized tea leaves;

[0057] (2) Water-bath extraction: add water to the pulverized tea leaves obtained in step (1), the mass ratio of tea leaves to water is 1:10, and extract in a water bath at a temperature of 95° C. for 10 minutes to obtain a water extract;

[0058] (3) Enzymolysis: cooling the water extract obtained in step (2), then adding tannase, ProteAX protease and cellulase to the water extract, enzymolysis for 1 hour, and the enzymolysis temperature is 50°C; wherein , the mass percentage of ProteAX protease and tea leaves is 1.3%, the mass percentage of cellulase and tea leaves is 1.7%, and the mass percentage of tannase and tea leaves is 1.7%;

[0059] (4) Enzyme inactivation: the enzymolysis product obt...

Embodiment 3

[0061] An embodiment of the tea extract of the present invention and its preparation method, the preparation method of the tea extract described in this embodiment comprises the following steps:

[0062] (1) Take Fenghuang Dancong tea and pulverize it to obtain pulverized tea leaves;

[0063] (2) Water-bath leaching: add water to the pulverized tea leaves obtained in step (1), the mass ratio of tea leaves to water is 1:10, and leaching in a water bath at a temperature of 70°C for 30 minutes to obtain a water-extract;

[0064] (3) Enzymolysis: cooling the water extract obtained in step (2), then adding tannase to the water extract, enzymolysis for 4 hours, then adding ProteAX protease and cellulase, and continuing enzymolysis for 2 hours, The enzymolysis temperature is 30°C; wherein, the mass percentage of ProteAX protease and tea leaves is 1.2%, the mass percentage of cellulase and tea leaves is 1.6%, and the mass percentage of tannase and tea leaves is 1.6%;

[0065] (4) Enz...

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Abstract

The invention relates to a tea extracting solution and a preparation method thereof. The preparation method of the tea extracting solution, provided by the invention, comprises the following steps: (1) adding water into tea and performing water bath extraction to obtain a water extract; (2) performing enzymolysis: cooling the water extract obtained in the step (1), adding enzyme into the water extract and performing enzymolysis at the temperature of 30 to 50 DEG C for 1 to 6 hours, wherein the enzyme consists of protease, cellulase and tannase, the mass percentage of protease to the tea is more than 0 and less than or equal to 1.3%, the mass percentage of cellulase to the tea is more than 0 and less than or equal to 1.7% and the mass percentage of tannase to the tea is more than 0 and less than or equal to 1.3%; and (3) performing enzyme deactivation. When the tea extracting solution is prepared, enzymolysis is conducted by composite enzyme consisting of protease, cellulase and tannase, so under the combined action and the mutual influence of various enzyme, the quality of the obtained tea extracting solution is greatly improved, and the tea polyphenol content, the free amino acid content and the solid matter content of the tea extracting solution are obviously increased.

Description

technical field [0001] The invention relates to an extract and a preparation method thereof, in particular to a tea extract and a preparation method thereof. Background technique [0002] Today, tea has become one of the most popular soft drinks in the world. With the improvement of people's living standards and the quickening pace of life, tea beverages are widely welcomed by consumers due to their natural, healthy and convenient characteristics, and are developing very rapidly. Tea beverages are mainly beverages made from instant tea powder made from tea leaves through concentration, soaking, and drying processes, and then processed and blended. With the continuous expansion of the tea beverage market, instant tea has also developed rapidly. [0003] Tea extraction methods mainly include leaching, pouring, countercurrent, decoction, maceration, percolation, reflux and steam steaming. In addition, many studies have shown that tea extraction methods include microwave-assi...

Claims

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Application Information

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IPC IPC(8): A23F3/18A23F3/16
CPCA23F3/166A23F3/18
Inventor 任文彬汪薇白卫东曾晓房冯卫华于立梅陈海光关宝荣
Owner ZHONGKAI UNIV OF AGRI & ENG
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