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Traditional Chinese medicine extraction leaching method

A technology for leaching and traditional Chinese medicine, applied in solid solvent extraction and other directions, can solve the problems of large concentration gradient leaching efficiency, low leaching kinetic energy of solvent and solute, and low leaching efficiency, and achieve high leaching kinetic energy, excellent leaching effect, and high leaching efficiency.

Active Publication Date: 2020-10-23
哈尔滨兴本草科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Distillation and reflux processes are similar to decoction, and both have the problem of high energy consumption and low leaching efficiency
[0004] The percolation method takes a long time (48~120h, the minimum also needs 48h), the amount of solvent can be less than that of decoction, and the concentration gradient in the process is large, and the leaching efficiency is high; but because the temperature of percolation method is mostly room temperature or low temperature (40 ~50℃), the penetration of solvent and the leaching of solute have low kinetic energy
[0005] The impregnation method has the defects of low leaching efficiency and long time consumption

Method used

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specific Embodiment approach 1

[0011] Specific Embodiment 1: In this embodiment, the extraction and leaching method of traditional Chinese medicine is realized by continuous and alternating percolation and decoction.

[0012] In this embodiment, the Chinese herbal medicine is soaked in a solvent and decocted for a short period of time (such as 0.5h), and then kept at a temperature close to boiling (such as water as a solvent, the temperature is 98°C) for a long period of time (such as 6h), and then stop Percolation immediately boil the medicinal material for a short period of time (such as 0.5h), then heat preservation and immediately percolate for a long period of time (such as 6h), and then stop the percolation and immediately boil the medicinal material for a short period of time (such as 0.5h), so continuously and alternately, collect Percolation leachate for use.

[0013] Percolation and decoction are carried out in the same reactor.

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the temperature of the solvent in the percolation process is 0.2-10° C. lower than the boiling point of the solvent. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the solvent used for percolation and decoction is an inorganic solvent or an organic solvent. Others are the same as in the first or second embodiment.

[0016] The solvent in this embodiment is water, ethanol, methanol, acetone, butanol, ethyl acetate, chloroform, ether, benzene, cyclohexane, petroleum ether, etc., and a suitable solvent can be selected according to the extraction and leaching components.

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Abstract

The invention relates to a traditional Chinese medicine extraction leaching method. The method is realized by continuously and alternately percolating and decocting. According to the method disclosedby the invention, the advantages of high decocting temperature, high leaching kinetic energy, large percolation concentration gradient and high leaching efficiency are fully exerted, and an excellentleaching effect is achieved. The extraction and leaching process of health-care food, plant and animal extracts and part of common food is similar to the leaching process of traditional Chinese medicine preparations, so that the method disclosed by the invention can also be adopted. The invention is not only suitable for single traditional Chinese medicine decoction pieces, but also suitable for compound preparations.

Description

technical field [0001] The invention relates to a method for extracting traditional Chinese medicine. Background technique [0002] Traditional Chinese medicine preparations usually choose one of decoction, reflux, percolation, maceration, distillation and other methods when extracting and leaching. At present, decoction is the most commonly used and the closest to traditional decoction. Generally, decoction is usually done twice or three times, and the liquid medicine is combined, and boiled for about 1-2 hours each time. The total amount of decoction solvent (such as water) is about 18-30 times the amount of medicinal materials, and further Preparing and concentrating medicinal liquid requires a large amount of energy consumption (take steam as an example, even if concentrated under reduced pressure, 0.6 to 0.8 tons of steam will be consumed for every ton of water evaporated). The decoction temperature is about 100°C, the penetration of the solvent and the leaching kineti...

Claims

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Application Information

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IPC IPC(8): B01D11/02
CPCB01D11/02
Inventor 于兴洲
Owner 哈尔滨兴本草科技有限公司