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High-purity extraction method of tea polyphenol

An extraction method and technology of tea polyphenols, applied in the field of natural product extraction, can solve the problems of low production efficiency and low purity of tea polyphenols, achieve the effects of saving production costs, reducing environmental pollution, and improving safety

Inactive Publication Date: 2015-11-11
四川珍福堂商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-purity extraction method of tea polyphenols, which overcomes the problem of low production efficiency and low purity of tea polyphenols in the background technology, reduces the production cost of tea polyphenols, and is more environmentally friendly and in line with sustainable development. Spirit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] A further detailed description will be given below through specific implementation examples.

[0023] Preparation of tea polyphenols crude extract:

[0024] A1. Drying: Lay the tea leaves flat to dry, with a drying thickness of 1~3cm, for 1~3 days, and the drying temperature is controlled at 20~24 degrees;

[0025] A2. Enzyme inactivation: steam the tea leaves after drying for 15-20 minutes, and control the temperature at 90-95°C to inhibit and inactivate residual enzymes;

[0026] A3. Rough extraction: Add tea leaves to ethyl acetate solvent, control the pH at 2.5~3.5, heat and reflux for 2.5~3h, filter with suction to obtain the extract, concentrate the extract and add it to the zinc chloride solution, adjust When the pH value reaches 7, sodium chloride is added for precipitation, and the precipitate is suction filtered to obtain a filter cake;

[0027] A4. Extraction: Add the filter cake to the hydrochloric acid solution, stir to dissolve, control the pH at 4~4.5, ...

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PUM

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Abstract

The invention relates to the technical field of beverages, in particular to a high-purity extraction method of tea polyphenol. The high-purity extraction method includes: through matched using of technologies of solvent leaching, precipitation, extraction and filtering, extracting a coarse product of the tea polyphenol; purifying the coarse product to obtain a pure product. Content of the tea polyphenol in the pure product is higher than 96%, the problem that the tea polyphenol is low in production efficiency and low in purity in the prior art is solved, and production cost of the tea polyphenol is lowered. The high-purity extraction method is more environment friendly and conforms to a concept of sustainable development.

Description

technical field [0001] The invention relates to the technical field of natural product extraction, in particular to a high-purity extraction method of tea polyphenols. Background technique [0002] Tea Polyphenols (TeaPolyphenols) 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% to 80%. Tea polyphenols, also known as tea tannin or tea tannin, 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 tea polyphenols contain multiple phenolic hydroxyl groups, so they have detoxification and anti-radiation effects. They can effectively prevent radioactive substances from invading the bone marrow, and can quickly excrete strontium 90 and cobalt 60 from the body. Nemesis". As an additive, tea polyphenols are widely used in vario...

Claims

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Application Information

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IPC IPC(8): A61K36/82A23L1/03A23L29/00
CPCY02A40/90
Inventor 周宏林
Owner 四川珍福堂商贸有限公司