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Method for separating mixed water-soluble and liposoluble components by virtue of subcritical liquid-liquid extraction technology

An extraction technology, subcritical technology, applied in the direction of fat production, fat oil/fat production, etc., can solve the problems of destroying the biological activity of active ingredients, difficulty in large-scale production, high operating temperature, etc., to achieve no solvent residue, low equipment investment, The effect of high degree of separation

Inactive Publication Date: 2015-05-20
河南亚临界生物技术有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Wang Hua et al. (A method for preparing biodiesel by using subcritical-supercritical fluid conversion, application number: 200610010882.5) used the method of combining subcritical water and supercritical to process plants, animal fats and waste cooking oil to obtain biodiesel , but the medium used in this method is water, and the operating temperature is high (255-300°C, 250-450°C), which will destroy the biological activity of the active ingredients. It is not suitable for the treatment of plant samples and traditional extracts, and consumes a lot of energy. , the equipment cost is high, and it is difficult to achieve large-scale production

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  • Method for separating mixed water-soluble and liposoluble components by virtue of subcritical liquid-liquid extraction technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 1L of Eucommia ulmoides extract obtained by the traditional method, put it into a closed extraction tank, use a vacuum pump to pump out the air in the tank, inject an appropriate amount of butane solvent into the tank to completely immerse the material, the material-solvent ratio is 1:15, and the extraction time is 30 minutes. The temperature is 30° C., the stirring rate is 500 rpm, and the pressure is 0.29 MPa. After the extraction, keep it warm for 60 minutes. When the mixed material in the extraction tank is completely separated, the lower layer liquid is completely put into the separation tank. The extraction tank and the separation tank are subjected to evaporation and desolventization treatment respectively, and the fat-soluble component and the water-soluble component of the mixed material are respectively obtained after the desolventization is completed. The solvent gas evaporated from the extraction tank and separation tank can be recycled after being com...

Embodiment 2

[0025] Fresh mint beating treatment, take 1.2L of mint slurry, the operation is the same as in Example 1, the specific parameters: the solvent is dimethyl ether, the ratio of material to solution is 1:30, the extraction time is 50 minutes, the temperature is 35°C, the stirring rate is 1000rpm, and the pressure is 0.78MPa . After the extraction is complete, keep it warm for 30 minutes. It has been tested that the separation degree of water-soluble components and fat-soluble components is high, and the residual solvents are all lower than 1ppm.

Embodiment 3

[0027] Get 1.5L of Ginkgo biloba extract obtained by the traditional method, the operation is the same as in Example 1, the specific parameters: the solvent is tetrafluoroethane, the ratio of material to solution is 1:35, the extraction time is 80 minutes, the temperature is 5°C, the stirring rate is 800rpm, the pressure 0.35 MPa. After the extraction, keep it warm for 100 minutes. It has been tested that the separation degree of water-soluble components and fat-soluble components is high, and the residual solvents are all lower than 1ppm.

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Abstract

The invention discloses a method for separating a water-soluble component from a liposoluble component by virtue of a subcritical liquid-liquid extraction technology, which belongs to the field of biological extraction. The novel extraction and separation technology comprises the following steps: putting a pretreated mixed material into an extraction pot; in the airtight, anaerobic and low-pressure extraction pot, according to the similarity-intermiscibility principle of organic matters, transferring the liposoluble component from a liquid material into an extraction solvent through a molecular diffusion process in the soaking of the liquid material and the extraction solvent, thereby separating the liposoluble component from the water-soluble component; performing standing for layering, thereby completely separating the water-soluble component in the liquid material from the liposoluble component; and finally removing solvents from the two components through pressure reducing evaporation, thereby respectively obtaining the water-soluble component and the liposoluble component. The method is simple in technology, low in equipment investment, suitable to large-scale production, low in extraction temperature, high in product separation degree and free of solvent residues; since the solvents are recyclable, no pollution is caused; the method has a broad application prospect.

Description

technical field [0001] The invention relates to subcritical liquid-liquid extraction technology, in particular to a method for separating water-soluble components and fat-soluble components by using subcritical liquid-liquid extraction technology, and belongs to the field of biological extraction. Background technique [0002] In industries such as oleochemicals, food processing, flavors and fragrances, pigments, and traditional Chinese medicine extraction, the traditional methods used to extract natural plant active ingredients are mostly alcohol extraction, petroleum ether extraction, etc., and the extracts obtained by these methods are all water-soluble. For the mixed solution of components and fat-soluble components, the cost of separation by traditional methods (such as macroporous resin method) is high, the efficiency is low, and the organic residues are high, so it is difficult to meet the requirements for purity. This is very unfavorable for the separation and mechan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10
Inventor 秦广雍谷令彪庞会利祁鲲
Owner 河南亚临界生物技术有限公司