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Method for safely and efficiently extracting high-purity tea polyphenols

An extraction method and technology of tea polyphenols, applied in the field of safe and efficient extraction of high-purity tea polyphenols, can solve problems such as residues, impurities, difficulty in obtaining high-purity tea polyphenols, and incomplete extraction of tea polyphenols

Active Publication Date: 2018-01-23
雅安市云茶供应链管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only relying on one extraction method may easily lead to low extraction efficiency, incomplete extraction of tea polyphenols, or many residues and impurities, and it is difficult to obtain high-purity tea polyphenols products

Method used

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  • Method for safely and efficiently extracting high-purity tea polyphenols
  • Method for safely and efficiently extracting high-purity tea polyphenols
  • Method for safely and efficiently extracting high-purity tea polyphenols

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A safe and efficient method for extracting high-purity tea polyphenols, comprising the following steps:

[0040] (1) Coarse separation of impurities:

[0041] A1: Heat the tea leaves to 280°C with microwave ovens and keep them for 3 minutes to inactivate the enzymes;

[0042] A2: Keep the tea leaves in water at 50-55°C, use a dumb jaw crusher for crushing and extracting, cut and crush the tea leaves to a mesh size of 110-120 mesh, add an oxygen scavenger, and then use an ultrasonic frequency of 25KHz , the ultrasonic power is 160W, the ultrasonic treatment time is 20min, and the extraction temperature is 70°C for ultrasonic extraction, filtering, repeating the above extraction steps more than two times, and combining the filtrates;

[0043] A3: Extract the filtrate with chloroform, separate the layers, remove the chloroform extraction layer, and keep the aqueous solution layer;

[0044] A4: repeat step A3 more than twice, and combine the aqueous solution layer;

[00...

Embodiment 2

[0059] A safe and efficient method for extracting high-purity tea polyphenols, comprising the following steps:

[0060] (1) Coarse separation of impurities:

[0061] A1: Heat the tea leaves to 260°C by microwave and keep for 4 minutes to inactivate the enzyme;

[0062]A2: Keep the tea leaves in water at 50-55°C, use a hammer mill for crushing and extracting, cut and crush the tea leaves to a mesh size of 110-120 mesh, and add an oxygen scavenger, then use an ultrasonic frequency of 25KHz, ultrasonic The power is 160W, the ultrasonic treatment time is 20min, and the extraction temperature is 70°C for ultrasonic extraction, filtration, repeat the above extraction steps more than two times, and combine the filtrates;

[0063] A3: Extract the filtrate with chloroform, separate the layers, remove the chloroform extraction layer, and keep the aqueous solution layer;

[0064] A4: repeat step A3 more than twice, and combine the aqueous solution layer;

[0065] A5: Maintain the temp...

Embodiment 3

[0079] A safe and efficient method for extracting high-purity tea polyphenols, comprising the following steps:

[0080] (1) Coarse separation of impurities:

[0081] A1: Heat the tea leaves to 270°C by microwave and keep for 3.5 minutes to inactivate the enzyme;

[0082] A2: Keep the tea leaves in water at 50-55°C, use an ultrafine pulverizer for crushing and extracting, cut and crush the tea leaves to a mesh size of 110-120 mesh, and add an oxygen scavenger, then use an ultrasonic frequency of 25KHz, ultrasonic The power is 160W, the ultrasonic treatment time is 20min, and the extraction temperature is 70°C for ultrasonic extraction, filtration, repeat the above extraction steps more than two times, and combine the filtrates;

[0083] A3: Extract the filtrate with chloroform, separate the layers, remove the chloroform extraction layer, and keep the aqueous solution layer;

[0084] A4: repeat step A3 more than twice, and combine the aqueous solution layer;

[0085] A5: Main...

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Abstract

The invention discloses a method for safely and efficiently extracting high-purity tea polyphenols. The method has the advantages that solvent purification processes and resin adsorption processes arecombined with one another, and accordingly the tea polyphenols can be efficiently extracted; impurities can be ultimately removed to the greatest extent by the aid of impurity crude separation, water-bath and ultrasonic crude extraction, resin extraction, solvent impurity removal and low-temperature still standing residue removal processes and the like, accordingly, the available content of the tea polyphenols can be obviously increased, the purity of the tea polyphenols can be obviously improved, effects of reducing the residual quantities of harmful solvents can be realized, and the processes are safe.

Description

technical field [0001] The invention belongs to the field of natural product extraction, and in particular relates to a safe and efficient extraction method for high-purity tea polyphenols. Background technique [0002] Tea Polyphenols is the general term for polyphenols in tea, including flavanols, anthocyanins, flavonoids, flavonols and phenolic acids. It is mainly flavanols (catechins), and catechins account for 60-80%. Tea polyphenols, also known as tea tanning or tea tannins, are one of the main components that form the color and aroma of tea, and are also one of the main components that have health care functions in tea. Studies have shown that active substances such as tea polyphenols have detoxification and anti-radiation effects, can effectively prevent radioactive substances from invading bone marrow, and can quickly excrete strontium 90 and cobalt 60 from the body. They are known as "radiation killers" by the health and medical circles. [0003] The extraction p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/82A61P39/02A61P17/16A61P39/00A61K127/00
Inventor 吴思祥周宝才
Owner 雅安市云茶供应链管理有限公司
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