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 equipment cost, etc., to achieve no solvent residue, low equipment investment, The effect of high degree of separation
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[0022] Example 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 extract the air in the tank, inject an appropriate amount of butane solvent into the tank to completely submerge the material, the material-to-solution 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 is over, keep it for 60 minutes while keeping warm. After the mixture material in the extraction tank is stratified, the lower layer of liquid is completely put into the separation tank. The extraction tank and the separation tank are respectively subjected to evaporative desolventizing treatment, and the fat-soluble component and the water-soluble component of the mixture are obtained after desolventizing. The solvent gas evaporated from the extraction tank and the separation tank can be recycled after being compre...
Example Embodiment
[0024] Example 2
[0025] Fresh mint pulping treatment, take 1.2L mint slurry, the operation is the same as in Example 1, the specific parameters: solvent is dimethyl ether, material-to-solution ratio is 1:30, extraction time is 50 minutes, temperature is 35°C, stirring rate is 1000rpm, pressure is 0.78MPa . After the extraction is over, keep it for 30 minutes while keeping warm. It has been tested that the degree of separation of water-soluble components and fat-soluble components is high, and the residual solvent is less than 1ppm.
Example Embodiment
[0026] Example 3
[0027] Take 1.5L of Ginkgo biloba extract obtained by the traditional method, and the operation is the same as in Example 1. The specific parameters: solvent is tetrafluoroethane, material-to-solution ratio is 1:35, extraction time is 80 minutes, temperature is 5°C, stirring rate is 800rpm, pressure 0.35MPa. After the extraction is over, keep it for 100 minutes while keeping warm. It has been tested that the degree of separation of water-soluble components and fat-soluble components is high, and the residual solvent is less than 1ppm.
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