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A method of integrating dehydration of traditional Chinese medicine raw materials, extraction of essential oil and preparation of essential oil

A technology of traditional Chinese medicine essential oils and traditional Chinese medicines, which is applied in the directions of essential oils/fragrances, solid solvent extraction, and fat production. It can solve the problems of large loss of ingredients, limitations, and difficulty in meeting industrial requirements, and achieve low loss, low cost, and fast refining methods. easy effect

Active Publication Date: 2016-03-02
刘东波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to reasons such as technology and cost, freeze-drying is difficult to meet the requirements of industrialization for a while, so the dehydration of raw materials and the large loss of components have always limited the use of supercritical CO 2 Application of Extraction Technology in Essential Oil Extraction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Crush 1Kg of shade-dried Atractylodes atractylodis into 30 meshes and put them into the barrel of the extraction kettle. Turn on the cold box for refrigeration, set the temperature of the extraction kettle to 65°C, set the temperature of the separation kettle I to 25°C, and turn on the CO 2 Cylinder, CO 2 Come out of the steel cylinder, enter the cold box for liquefaction through the gas purifier I, and then start the high-pressure pump to convert the CO 2 After the purifier II, the preheater I is pumped into the extraction kettle, and the pressure is increased to 16MPa for dehydration. 2 Enter the preheater II to preheat and then enter the separation system, adjust the pressure of the separation tank I to 4MPa, and release water from the separation tank I after 1h. Adjust the temperature of the extraction kettle to 37°C and the pressure to 26Mpa so that the CO 2 Become a fluid for essential oil extraction, CO containing essential oil 2 The fluid enters the separatio...

Embodiment 2

[0018] Crush 1Kg of dried Ligusticum Chuanxiong into 40 meshes, control the temperature of the dehydration separation tank at 70°C, the pressure at 18Mpa, the temperature of the separation tank I at 30°C, the pressure at 6Mpa, and the dehydration time for 1h. Control the pressure of the extraction kettle to 28MPa, set the temperature to 39°C, adjust the pressure of the separation kettle I to 11MPa, set the temperature to 52°C, adjust the pressure of the separation kettle to 5Mpa, and set the temperature to 45°C. After freezing for 4 hours, 87.8 g of refined essential oil was obtained after filtering at 30 μm, with an extraction rate of 8.78%.

[0019] After testing the samples according to the GC-MS essential oil determination method, a total of 142 components were detected, mainly including: 1-(2,4-dimethylphenyl)-1-propanone 3.64%; n-butylene phthalamide 3.12% 6.42% of ambroxanone; 1-phenyl-1-hexanol 11.93%; (2E)-1-phenyl-2-buten-1-ol 30.76%; linoleic acid 2.71%; phthalic ac...

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Abstract

The invention discloses an integrated method for dehydrating traditional Chinese medicine materials, extracting essential oil and preparing the essential oil. The integrated method comprises the following steps: (1) drying and grinding, namely half drying the traditional Chinese medicine materials in a dark place, grinding the materials to have 30-40 meshes, and placing into an extraction kettle; (2) dehydrating, namely controlling the pressure of the extraction kettle to be 8-28 MPa, the temperature of the extraction kettle to be 35-75 DEG C, the pressure of a separation kettle to be 4-12 MPa and the temperature of the separation kettle to be 20-60 DEG C, and dehydrating for 0.5-1 h; (3) extracting and separating, namely controlling the temperature of the extraction kettle to be 36-39 DEG C, the pressure of the extraction kettle to be 26-28 MPa, the pressure of a separation kettle I to be 9-11 MPa and the temperature of the separation kettle I to be 46-54 DEG C, and extracting for 1.5-3 h; and (4) pre-freezing and refining, namely pre-freezing the initial essential oil for 4-8 h at the temperature of 0-8 DEG C, and centrifuging for 5-20 min at the speed of 6000-14000 r / min or filtering by a microfiltration membrane of 70-110 mum. The integrated method has the characteristics of low energy consumption, low loss of the essential oil, high extraction efficiency, no environmental pollution, high product quality, high purity and no solvent residue.

Description

technical field [0001] The invention relates to a method for integrating dehydration of traditional Chinese medicine raw materials, extraction of essential oils and preparation of essential oils, in particular to a method using supercritical CO 2 Extraction technology is a method of dehydrating, extracting and preparing Chinese medicine essential oil from raw materials of Chinese medicine. Background technique [0002] Traditional Chinese medicine essential oil refers to a kind of oily substance with characteristic aroma extracted from the flowers, leaves, roots, bark, stems, branches, fruits, seeds and other parts of aromatic Chinese medicines. The ingredients contained are relatively complex, mainly including terpene hydrocarbons, aromatic hydrocarbons, alcohols, aldehydes, ketones, ethers, esters and phenols. As an important functional component of traditional Chinese medicine, essential oil is used in cough, asthma, expectorant, antibacterial, anti-inflammatory, carmina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/02C11B9/02
Inventor 刘东波赖锡湖李坚
Owner 刘东波
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