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Sub-critical fluid extraction solvent and abstraction method

A subcritical fluid and extraction solvent technology, applied in the direction of solid solvent extraction, etc., can solve the problems of enlarging the effective volume of equipment and restricting industrial application, etc., and achieve the effect of improving the extraction rate

Inactive Publication Date: 2008-04-16
韩延欣 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, CO 2 The extraction process must be carried out under the ultra-high pressure state above 25MPa. The extremely high pressure limits the expansion of the effective volume of the equipment, and also restricts the industrial application of this technology in the production of intermediates

Method used

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  • Sub-critical fluid extraction solvent and abstraction method
  • Sub-critical fluid extraction solvent and abstraction method
  • Sub-critical fluid extraction solvent and abstraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Subcritical fluid extraction of seabuckthorn seed oil: the seabuckthorn seeds are crushed to a particle size of 2mm-80 mesh; the automatic feeder sends the raw materials into the extraction kettle, and stops when the volume of the raw materials reaches 1 / 3 of the volume of the extraction kettle Load the material, close the inlet and outlet control valves; reduce the vacuum of the extraction kettle to 1×10 4 Below pa, eliminate non-condensable gas in the system; control the temperature of the solvent storage tank 4 pa-5×10 -2 Under pa vacuum, the mixed solution is desorbed and evaporated in the analysis kettle to complete the preliminary separation of the solvent and seabuckthorn seed oil; the mixed solution coarsely separated by the primary analysis is injected into the secondary analysis kettle by a transfer pump, and heated by a jacketed heat exchanger. At 5×10 -2 Under the pa high vacuum state, the solvent is further analyzed and evaporated to complete the com...

Embodiment 2

[0056] Example 2: Subcritical fluid extraction of tanshinone IIA: pulverize the raw materials of Danshen to control the particle size between 2mm-80 mesh; the automatic feeder sends the raw materials into the extraction kettle, and when the volume of the raw materials reaches 1 / 3 of the volume of the extraction kettle, stop feeding , Close the inlet and outlet control valves; reduce the vacuum of the extraction kettle to 1×10 4 Below pa, remove the non-condensable gas in the system; mix sulfur hexafluoride and heptafluoropropane in equal volumes, and control the temperature of the mixed solution to be less than 35°C and pressure less than 0.8MPa to keep it in a liquid state; according to the volume of the solvent and the raw material 2.5:1 Inject the liquid mixed solution into the extraction kettle and stir and mix with the raw materials of Salvia miltiorrhiza; inject the purity 95% ethanol entrainer according to the volume ratio of the solvent and the entrainer 10:1 to change the...

Embodiment 3

[0059] Example 3: Subcritical fluid extraction of wolfberry seed oil: mix sulfur hexafluoride and tetrafluoroethane in a volume ratio of 6:4, and control the temperature of the solvent storage tank to be less than 35°C and pressure less than 0.8 MPa to maintain mixing The solvent is in a liquid state; the wolfberry seed material is crushed to 2mm-80 mesh and then added to the extraction kettle. When the volume of the raw material reaches 1 / 3 of the volume of the extraction kettle, stop feeding and close the inlet and outlet control valves; reduce the vacuum of the extraction kettle to 1× 10 4 Below pa, remove the non-condensable gas in the system; then pour the mixed solvent of sulfur hexafluoride and tetrafluoroethane into the extraction kettle at a volume ratio of 2.5:1 between the solvent and the raw material, and stir and mix with the raw material of wolfberry seeds; To 45℃, hold time for 50 minutes, complete one immersion extraction; repeat extraction three to five times, com...

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Abstract

The present invention relates to a dissolvent with effective ingredient extracted from the plant-and-animal raw material and the extraction method thereof. One subcritical fluid extraction solvent includes an extraction solvent of a compound or composition extracted from the raw material containing compound or composition as component element, and the solvent is mainly characterized in that the liquid sulfur hexafluoride works as the extraction solvent. The invention also includes a method for extracting the subcritical fluid extraction solvent. The advantage of the invention is that the extraction and separation of the target component in the natural product are optionally executed to further increase the extraction rate of the intermediate product and the usage factor of the raw material while the unique dissolving character of the sulfur hexafluoride and the mixed solvent thereof to the liposoluble active ingredient is used. The physical features of strong dissolving capacity and low boiling point of the sulfur hexafluoride and the mixed solvent thereof are used to reduce the consumption quantity of the energy source, dissolvent of the system and the cost, and increase the market competition ability of the intermediate product.

Description

Technical field: [0001] The invention relates to a solvent for extracting effective ingredients from animal and plant raw materials and an extraction method thereof. Background technique: [0002] According to the dissolution properties of the various components of the animal and plant raw materials in different solvents, and according to the principle of "similar compatibility", it will be effective to select solvents with high solubility for the required active ingredients and low solubility for the components that do not need to be dissolved. The ingredients are dissolved from the raw tissue, and then distilled to recover the extraction solvent to complete the extraction and separation process. [0003] Traditional extraction solvents include strong polar solvent water and polar organic solvents ethanol, methanol, acetone, etc., ethanol is the most commonly used; lipophilic organic solvents, such as petroleum ether, benzene, chloroform, ethyl ether, ethyl acetate, dichloroethy...

Claims

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Application Information

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IPC IPC(8): B01D11/02
Inventor 韩延欣柴守环王智民
Owner 韩延欣
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