Method for extracting paeonol

Abstract

The invention discloses a method for efficiently quickly extracting paeonol. The method comprises the following steps of: getting moutan bark or a cynanchum paniculatum medical material; crushing same; feeding into a subcritical extracting kettle; adding a non-polar organic agent; dynamically extracting for 20 to 80 minutes at 20 to 80 DEG C under pressure of 0.3 to 5MPa; recycling the agent from obtained extract; then dissolving via a polar organic agent, and filtering; and standing and crystallizing, thus obtaining the paeonol. With the adoption of the method disclosed by the invention, so that a high yield is obtained, operation is simple to carry out, low energy is consumed, and industrialization enlargement can be easily achieved.

Description

technical field [0001] The invention relates to a method for extracting paeonol, in particular to a method for using a subcritical fluid to extract paeonol. Background technique [0002] Paeonol is also called paeonol, paeonol, CAS number 552-41-0, molecular formula C 9 h 10 o 3 , molecular weight 166.18. Paeonol is white or yellowish shiny needle-like crystals, colorless needle-like crystals (ethanol), melting point 49°C-51°C, special smell, slightly spicy taste, easily soluble in ethanol and methanol, soluble in ether, Among acetone, benzene, chloroform and carbon disulfide, slightly soluble in water, soluble in hot water, insoluble in cold water, can volatilize with water vapor. [0003] Paeonol has analgesic, anti-inflammatory, antipyretic and anti-allergic effects. In terms of daily chemicals, paeonol can inhibit the generation of O2- free radicals in cells, whiten the skin, restore and fade the pigment deposited in the skin, reduce stasis and spots, reduce inflamm...

AI Technical Summary

Problems solved by technology

Alcohol extraction and steam distillation have the defects of high energy consumption, long production cycle and low yield

CO 2 Although the sup