A kind of supercritical extraction method of active ingredient of Chinese herbal medicine

Abstract

The present invention relates to the field of extraction of Chinese herbal medicine, in particular to a method for supercritical extraction of active ingredients of Chinese herbal medicine. The extraction device used in the method includes a shell assembly, a crushing and stirring assembly and a booster assembly. The crushing and stirring assembly is arranged on the shell Above the assembly, the pressurization assembly is arranged inside the casing assembly, and the casing assembly includes an outer casing, an inner casing, an annular half pipe, an external threaded sleeve, a cover plate and a feed pipe. By setting the crushing and stirring assembly above the shell assembly, when the Chinese herbal medicine is placed inside the inner shell, the servo motor can drive the crushing rod on the rotating shaft to break the Chinese herbal medicine in the inner shell, so that the Chinese herbal medicine will not be broken when broken. The juice is lost, and the rotating shaft can drive the first stirring fan blade and the second stirring fan blade to stir in opposite directions while crushing the Chinese herbal medicine, so that the Chinese herbal medicine can be fully mixed with the extract.

Description

technical field [0001] The invention relates to the field of extraction of Chinese herbal medicines, in particular to a supercritical extraction method for active ingredients of Chinese herbal medicines. Background technique [0002] Supercritical is a supercritical fluid, which is a state of matter that is neither gaseous nor liquid between gas and liquid. This substance can only exist when its temperature and pressure exceed the critical point. A supercritical fluid has a higher density, similar to a liquid, and its viscosity is closer to that of a gas. The solvent strength of the supercritical fluid depends on the temperature and pressure of the extraction. Utilizing this feature, only by changing the pressure and temperature of the extractant fluid, the different components in the sample can be extracted successively according to the solubility in the fluid, and the weakly polar substances are extracted first under low pressure, and as As the pressure increases, the po...

AI Technical Summary

Problems solved by technology

[0003] When performing supercritical extraction of the active ingredients of Chinese herbal medicines, Chinese herbal medicines need to be crushed in order to increase the contact area between Chinese herbal medicines and extractants during processing. When crushing Chinese herbal medicines with crushing equipment, a part of the juice inside the Chinese herbal medicines will adhere On the broken tank and the inner wall of the broken Chinese herbal medicine container, the lost juice will carry the lost part of the active ingredients of the Chinese herbal medicine, resulting in a decrease in the extraction rate of the Chinese herbal medicine, and when the existing extractor extracts the Chinese herbal medicine, due to the shell Insufficient sealing with the cover plate will cause the active ingredients of Chinese herbal medicine to be lost with the leaking gas during the supercritical extraction process

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