Tea polyphenol production process for producing plurality of products by one time of feeding

A technology for tea polyphenols and products, which is applied in the production process field of low-bitter catechins and high-caffeine tea polyphenols, can solve the problems of large equipment investment, unfavorable industrialized production, and high production costs, thereby reducing production costs. , the effect of improving the utilization rate of tea and improving the competitiveness

Active Publication Date: 2016-09-28
张铰铣
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Carbon dioxide supercritical extraction: Supercritical extraction (SFE) is a new type of separation technology developed in recent years. It uses the fluid in the supercritical state as a solvent to extract in the region of supercritical temperature and pressure. This process Although it is safe and green, but the equipment investment is large, the efficiency is low, the production cost is high, and industrial production is not desirable

Method used

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  • Tea polyphenol production process for producing plurality of products by one time of feeding

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] For the first macroporous resin column, choose the resin model ADS-11, take 20L of tea concentrate, flow through the first macroporous resin column of 100×1000 at a flow rate of 1.2BV / H, and collect the effluent for later use. Then wash the impurities with 120L of 50°C pure water at a flow rate of 3BV / H, and collect the washing solution for later use. Finally desorb with 75% ethanol, the desorption amount is 1.5BV, the flow rate is 1BV / H, and the discharged desorption liquid is concentrated and dried in vacuum to obtain 340 grams of tea polyphenols, the content of tea polyphenols is 99.2%, the content of catechins is 80.1%, and the content of EGCG 60.5%, caffeine content 0.21%, product yield 6.8%.

[0038] The second macroporous resin column: resin model LX-8. Use the washing solution of the above-mentioned first macroporous resin column to load the column at a flow rate of 1.5BV / H; then wash the impurities with water at a washing volume of 3BV at a temperature of 40°C...

Embodiment 2

[0043] The first macroporous resin column, choose the resin model ADS-8, take 20L of clear tea concentrate, pass through the first macroporous resin column of 100×1000 at a flow rate of 1.5BV / H, collect the effluent for later use, and then use 100L Wash the impurities with pure water at 45°C, collect the washing liquid for later use, and finally use 75% ethanol for desorption, the desorption volume is 1.5BV, the flow rate is 1BV / H, the desorption liquid is collected, concentrated and dried in vacuum to obtain 325 grams of product, the content of tea polyphenols is 99.5% , the catechin content is 81.6%, the EGCG content is 62.3%, the caffeine content is 0.12%, and the product yield is 6.5%.

[0044] The second macroporous resin column: choose the resin model HPD200, use the washing liquid of the first macroporous resin column to load the column, the flow rate is 1.5BV / H, and then wash the impurities with pure water, the temperature of pure water is 40°C, the washing volume is 4B...

Embodiment 3

[0049] The first macroporous resin column, choose the resin model SAD-11, take 20L of clear tea concentrate, pass through the first macroporous resin column of 100×1000 at a flow rate of 1.2BV / H, collect the effluent for later use, and then use 100L Wash the impurity with pure water at 50°C, collect the washing liquid for later use, and finally use 80% ethanol for desorption, the desorption volume is 1.5BV, the flow rate is 1.2BV / H, the desorption liquid is collected, concentrated and dried in vacuum, and 330 grams of the product are obtained, the content of tea polyphenols is 99.2 %, the catechin content is 80.6%, the EGCG content is 59.8%, the caffeine content is 0.58%, and the product yield is 6.6%.

[0050] The second macroporous resin column: choose the resin model SP20, use the washing solution of the first macroporous resin column to load the column, the flow rate is 1.2BV / H, and then wash the impurities with pure water, the temperature of pure water is 45°C, the washing...

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Abstract

The invention relates to a tea polyphenol production process for producing a plurality of products at the same time by one time of feeding. Tea leaves are extracted with pure water and an extracting solution is subjected to rough filtering, fine filtering and ultra-filtering and then is concentrated by a membrane to obtain a tea concentrated solution. The tea concentrated solution passes through a first macroporous resin column to obtain high-content tea polyphenol; a water washing solution of the first macroporous resin column passes through a second macroporous resin column to obtain a product catechin without a bitter and astringent taste; a water washing solution of the second macroporous resin column passes through a third macroporous resin column to obtain high-caffeine tea polyphenol; effluent liquid of the first macroporous resin column passes through a fourth macroporous resin column to obtain 40% natural theanine. The tea polyphenol production process has the characteristics of high tea leaf utilization rate, low production cost, high product purity, no utilization of any toxic solvent in a production process, good product quality and high safety; each product is a product with relatively large demanding amount in the market and the market competitiveness is strong.

Description

technical field [0001] The invention belongs to the technical field of tea extracts, and relates to an extraction method of tea polyphenols and theanine, in particular to a production process of low-bitter catechins and high-caffeine tea polyphenols. technical background [0002] The production technology of extracting tea polyphenols from tea leaves has a history of more than 30 years, and industrialized large-scale production has also been carried out for more than 20 years. The production technology is quite mature; in summary, there are mainly the following technologies: precipitation method, solvent extraction method, Resin adsorption method, solvent extraction method, carbon dioxide supercritical extraction method, etc., no matter what kind of production technology the above-mentioned process is, only one to two products can be obtained in production, and its tea utilization rate is low, and production cost is high. [0003] Precipitation method: It is the earliest pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07G99/00C07D311/62C07D473/12C07C231/24C07C237/06
CPCC07C231/24C07D311/62C07D473/12C07G99/00C07C237/06
Inventor 张铰铣朱希磊
Owner 张铰铣
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