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A processing method for continuous purification of tea saponin

A processing method and technology for tea saponin, which are applied in the processing field of continuous purification of tea saponin, can solve the problems such as adverse effects on the health of solvent producers and the environment, long adsorption time and elution time of packed columns, and inability to achieve airtightness during the purification process. , to achieve the effect of expanding the scope of use, improving market competitiveness and low cost

Active Publication Date: 2018-06-19
RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the existing method, due to the small volume of the resin packed column, and the long adsorption time and elution time of the packed column, a large amount of solvent needs to be consumed during elution, so that the purification efficiency is low and the cost is too high; It is airtight and needs to consume a large amount of solvent, which not only causes serious safety hazards, but also has adverse effects on the health and environment of producers due to the volatilization of solvents

Method used

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  • A processing method for continuous purification of tea saponin

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: finely filter the extracted tea saponin solution, and adjust the temperature of the solution to 50°C, the impurity content of the filtrate after filtration is not more than 0.05%; the finely filtered tea saponin solution has a permeable molecular weight of 10000 The membrane is used for fine filtration and coarse separation, and the feed pressure is 1.2MPa; the permeate of the coarse separation enters the membrane with a permeable molecular weight of 5000 for the first step of separation and purification, and the feed pressure is 1.2MPa; the permeate of the first step is purified and enters the permeable The second step of purification is performed through a membrane with a molecular weight of 3000, and the feed pressure is 1.5Mpa; the permeate that passes through the membrane with a molecular weight of 3000 enters a membrane with a permeable molecular weight of 400 for nanofiltration, and the feed pressure is 1.5Mpa; After the nanofiltration retentate is drie...

Embodiment 2

[0018] Example 2: finely filter the extracted tea saponin solution, and adjust the temperature of the solution to 56°C, the impurity content of the filtrate after filtration is not more than 0.05%; the finely filtered tea saponin solution has a permeable molecular weight of 10000 The membrane is used for fine filtration and coarse separation, and the feed pressure is 1.5MPa; the permeate of the coarse separation enters the membrane with a permeable molecular weight of 5000 for the first step of separation and purification, and the feed pressure is 1.5MPa; the permeate of the first step is purified and enters the permeable The second step of purification is performed through a membrane with a molecular weight of 3000, and the feed pressure is 1.8Mpa; the permeate that passes through the membrane with a molecular weight of 3000 enters a membrane with a permeable molecular weight of 400 for nanofiltration, and the feed pressure is 2.0Mpa; After the nanofiltration retentate is drie...

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Abstract

The invention discloses a processing method for continuously purifying tea saponin. The method comprises the following steps: 1, finely filtering a tea saponin solution obtained after extraction; 2, allowing the finely filtered tea saponin solution to enter a membrane with the permeable molecular weight of 10000 to carry out fine filtration and crude separation, and allowing the permeate solution to enter a membrane with the permeable molecular weight of 5000 to carry out primary purification; 3, allowing the obtained primarily purified permeate solution to enter a membrane with the permeable molecular weight of 3000 to carry out secondary purification; 4, allowing a membrane separation permeate solution obtained in step 3 to enter a membrane with the permeable molecular weight of 400 to carry out nanofiltratio; and 5, drying or concentrating a nanofiltration trapped fluid to obtain purified tea saponin, and reusing the obtained permeate solution as a solvent in an extraction system. The method effectively improves the purity of the tea saponins, and also realizes increase of the production efficiency and effective reduction of the production cost and one-time investment because the purification process is simple and is easy to know.

Description

technical field [0001] The invention belongs to the field of tea saponin purification, and in particular relates to a processing method for continuous purification of tea saponin. Background technique [0002] The existing crude tea saponin has a purity of about 60%. The processing method for the purification of the crude product is: the crude tea saponin material liquid extracted from the tea dregs is adsorbed by a large-pore resin, and the adsorption liquid is repeatedly purified with a solvent. After elution, the eluents are combined, heated and concentrated, and then spray-dried. With the existing method, due to the small volume of the resin packed column, and the long adsorption time and elution time of the packed column, a large amount of solvent needs to be consumed during elution, so that the purification efficiency is low and the cost is too high; It is airtight and needs to consume a large amount of solvent, which not only causes serious safety hazards, but also c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J63/00C07H15/256C07H1/06
CPCC07H1/06C07H15/256C07J63/008
Inventor 郭少海杜孟浩姚小华费学谦
Owner RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY