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Tea extracting solution and preparation method thereof

A technology of tea extract and aqueous solution, which is applied in the direction of medical formula, medical preparations containing active ingredients, plant raw materials, etc., can solve the problems of not being suitable for long-term storage and transportation, and the water extract is easy to grow mold, so as to achieve easy recycling, Low boiling point, good stability

Active Publication Date: 2010-11-03
HAWLEY & HAZEL CHEMICAL CO (ZHONGSHAN) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2) The water extract is prone to mildew and is not suitable for long-term storage and transportation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A tea extract, which includes 5.0% tea polyphenols by weight, 0.70% caffeine, 40% moisture, 48% alcohol and other natural components of tea; pH value is 5.0; said tea polyphenols EGCG in phenol accounts for 1.5% of the total amount of tea extract.

[0030] The preparation method of the above-mentioned tea extract comprises the steps of: extracting the tea leaves with 80% edible alcohol aqueous solution under reflux for 1.5 hours at 40°C to obtain the extract; concentrating the extract to 1 / 2 of the original weight, cooling to After room temperature, place at 0°C for 20 hours, centrifuge, filter, and sterilize the filtrate to obtain the tea extract of the present invention; store at 0°C;

[0031] The edible alcohol aqueous solution with a weight ratio of 80% is 6 times the weight of tea leaves; the edible alcohol aqueous solution with a weight ratio of 80% is obtained by diluting 95% edible alcohol with distilled water; the centrifugal separation is under the condition o...

Embodiment 2

[0033] A tea extract, which comprises 8.5% tea polyphenols by weight, 1.40% caffeine, 50% water, 36% alcohol and other natural components of tea; pH value is 7.0; said tea polyphenols EGCG in phenol accounts for 2.5% of the total amount of tea extract.

[0034] The preparation method of the above-mentioned tea extract comprises the steps of: extracting the tea leaves with an aqueous edible alcohol solution with a weight ratio of 75% under reflux for 2.5 hours at 50° C. to obtain an extract; concentrating the extract to 1 / 4 of the original weight, After cooling to room temperature, place at 3°C ​​for 30 hours, centrifuge, filter, and sterilize the filtrate to obtain the tea extract of the present invention; store at 3°C;

[0035] The edible alcohol aqueous solution of described weight ratio 75% is 12 times of tealeaves weight;

[0036] The edible alcohol aqueous solution with a weight ratio of 75% is obtained by diluting 95% edible alcohol with distilled water;

[0037] The c...

Embodiment 3

[0039] A tea extract, which comprises 6.5% tea polyphenols by weight, 1% caffeine, 45% water, 42% alcohol and other natural components of tea; the pH value is 6; the tea polyphenols EGCG in phenol accounts for 2% of the total amount of tea extract.

[0040] The preparation method of the above-mentioned tea extract comprises the steps of: extracting the tea leaves with an aqueous edible alcohol solution with a weight ratio of 70% under reflux at 45°C for 2 hours to obtain an extract; concentrating the extract to 1 / 3 of the original weight, After cooling to room temperature, place at 1°C for 24 hours, centrifuge, filter, and sterilize the filtrate to obtain the tea extract of the present invention; store at 1°C;

[0041] The edible alcohol aqueous solution of described weight ratio 70% is 8 times of tealeaves weight;

[0042] The 70% edible alcohol aqueous solution is obtained by diluting 95% edible alcohol with distilled water.

[0043] The centrifugation is performed under t...

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PUM

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Abstract

The invention discloses a tea extracting solution which comprises the following components in percentage by weight: 5.0-8.5% of tea polyphenol, 0.70-1.40% of caffeine, 40-50% of moisture, 36-48% of alcohol and other trace natural components of tea. The pH value of the tea extracting solution is 5.0-7.0. The invention also discloses a preferable preparation method of the tea extracting solution. The tea extracting solution of the invention has the advantages of high tea polyphenol content, good stability and the like, can not deteriorate easily, and can meet the requirements when serving as oral care products. In the extraction method of the invention, alcohol with a certain concentration is used for extracting, and the alcohol is nontoxic and safe, has a low boiling point, can be recovered easily and can be mixed with water in any ratio to meet the requirements of different polarities.

Description

technical field [0001] The invention relates to a tea extract and a preparation method thereof. Background technique [0002] Tea is rich in various natural active ingredients such as amino acids, caffeine and tea polyphenols. They not only affect the color and taste of tea, but also the main reason why tea exerts various functions such as health care, antibacterial, refreshing, and halitosis. [0003] Caffeine is a very important class of ingredients in tea, belonging to purine alkaloids, which has the effect of dispelling fatigue and exciting nerves, and is clinically used to treat neurasthenia and coma recovery. However, large doses or long-term use can also damage important internal organs such as the liver, stomach, and kidneys. Therefore, there must be a content limit for it to ensure that the intake is within a safe range. [0004] Tea polyphenols, also known as tea tanning or tea tannin, is the general term for polyphenols in tea, accounting for 15-20% of the weig...

Claims

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Application Information

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IPC IPC(8): A61K36/82A61P1/02A61K31/353A61K127/00
Inventor 施瑶张世闻
Owner HAWLEY & HAZEL CHEMICAL CO (ZHONGSHAN) LTD
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