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A method for removing residue pesticides from Panax

A technology for residual pesticides and ginseng, which is applied in the field of removal of residual pesticides in ginseng, can solve problems such as difficulty in ensuring no loss of ginsenosides, large solvent flow, and high equipment requirements, and achieves a long history of medicinal use, strong solubility, and easy operation The effect of a wide range of conditions

Inactive Publication Date: 2008-04-09
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CO 2 Extraction technology has a certain effect in removing organochlorine pesticides in ginseng, but it needs to use a large amount of entraining agent, and the solvent flow rate is large, the operating pressure is high, and the requirements for equipment are high, which affects its promotion in industrial production.
The removal rates of α-BHC and γ-BHC in this method are both less than 70%, and the final pesticide residue content is still high, and because ginsenosides are easily soluble in ethanol, it is difficult to ensure that ginsenosides will not be lost if ethanol is used as an entrainer

Method used

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  • A method for removing residue pesticides from Panax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Using 300g American ginseng extract as raw material, using propane as solvent, extracting at 65°C and 8.0MPa, the mass mixing ratio of solvent and raw material is 5:1, and the separator temperature is about 75°C. Residual and ginsenoside, the results are shown in Table 1.

[0038] Table 1

[0039] Pesticide name

[0040] It can be seen from Table 1 that the removal rate of γ-BHC and Op-DDT is 100%, and the removal rate of tetrachloronitrobenzene is 61.8%.

[0041] Table 2

[0042] Ginsenoside Rb1 content%

[0043] 3.00

[0044] The loss of ginsenoside Rb1 after extraction was 3.0%, as shown in Table 2.

Embodiment 2

[0046] Take American ginseng extract as raw material, use propane as solvent, extract at 80°C, 8.0MPa, extraction time is 120min, the mass mixing ratio of solvent and raw material is 4:1, separator temperature is 65°C, extraction time is 60min, and the extraction is measured. Pesticide residues and saponins in ginseng before and after pesticide residues, the results are shown in Table 3.

[0047] table 3

[0048] Pesticide name

[0049] It can be seen from Table 3 that the removal rate of DDE is 54.7%, the removal rate of pp-DDT is 63.7%, and the removal rate of hexachlorobenzene is 46.3%.

[0050] Table 4

[0051] Ginsenoside Re content%

[0052] As shown in Table 4, the loss of ginsenoside Re was 6.5% after extraction.

Embodiment 3

[0054] American ginseng powder is used as raw material, propane is used as solvent, extraction is carried out at 50°C and 4.5MPa, the mass mixing ratio of solvent and raw material is 1:1, the temperature of separator is about 75°C, and the extraction time is 60min. The results of residues and saponins are shown in Table 5.

[0055] table 5

[0056] Pesticide name

[0057] As can be seen from Table 5, the DDD removal rate is 59.4%.

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Abstract

The invention relates to a method for removing residual pesticide in ginseng, in particular to a method that the raw material, namely, the ginseng is taken and charged into a high pressure extraction kettle, after air in the system is emitted, a solvent pump is opened, and extraction solvent, namely, propane is poured into the sealed extraction kettle, and the circulation of the propane and the raw material, the ginseng has the mass proportion of 1: 1 to 10.0: l (preferably 3: 1 to 9: 1); the extraction time is 30 to 180 min, and the extraction pressure is 4.0-15.0 MPa; the extract temperature is 40 to 100 DEG C; after the extraction is finished, the obtained residue is the ginseng after the residual pesticide is removed. The method provides an effective way for removing the residual organic pesticide in the ginseng, has wide raw material selection range, and has temperate operating condition, thereby being suitable for industrialized production.

Description

technical field [0001] The invention relates to a technology for removing residual pesticides in ginseng, in particular to a method for effectively removing residual pesticides in ginseng by extraction with propane. The method has a remarkable effect on removing residual pesticides, especially pesticide organic chlorine, and can The loss of ginsenoside, the active ingredient of ginseng, is reduced to a very low level. technical background [0002] Panax Ginseng C.A. Meyer, a Western-type Araliaceae ginseng (Panax Ginseng C.A. Meyer), as a precious Chinese herbal medicine, plays a pivotal role in the production of Chinese herbal medicines and is known as the "King of Herbs". It can effectively regulate the central nervous system, increase the contractility and frequency of the heart, stimulate the endocrine system, lower blood sugar, improve sexual function, promote the secretion of digestive juices, enhance human immunity, resist the proliferation and metastasis of cancer ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/258A61K125/00
Inventor 张民赵锁奇许志明孙学文赵光磊
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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