Supercritical CO2 process for extracting effective medicinal components from Chinese angelica

Abstract

The invention discloses a method for extraction of medicinal available composition from Chinese angelica with a supercritical carbon dioxide, belonging to the technique of extracting the medicinal available composition from Chinese angelica. The method contains the following process: adding the root of Chinese angelica into extraction kettle after disintegrating or cutting, and adding CO2 into extraction kettle after condensation and booster, the operation pressure of extraction being 10- 50MPa and the temperature being 32- 90 Deg. C, the mass ratio of entrainer ethanol to material being 0.5: 1- 3: 1, the entrainer being mixed and soaked with raw material or pumped by the entrainer pump and separated from solute and CO2 in separator after extraction, the pressure of the first stage separator being 3- 15MPa and temperature being 25- 40Deg. C, and the pressure of second stage separator being 3- 15MPa and temperature being 20- 30Deg. C, the product or solvent dissolved product being received from receiver, the solvent being evaporated and dried to prepare the final product, CO2 used circularly, and the whole extraction time being 0.5- 5 hours. The method has merits as the following: the energy consumption small, the operation simple, the extraction condition mild, the extraction time short, and so on.

Description

technical field [0001] The invention relates to a method for extracting medicinal active ingredients of angelica sinensis with supercritical carbon dioxide, which belongs to the extraction technology of medicinal active ingredients of angelica sinensis. Background technique [0002] Angelica comes from the dried rhizome of Angelica sinensis (Oliv) Diels, a plant of the Umbelliferae family. It contains ferulic acid and other medicinal active ingredients. It has the effects of promoting blood circulation, removing stasis, regulating menstruation and enriching blood. Treatment of chlorosis, dizziness and palpitations, irregular menstruation, menstrual pain amenorrhea, cold abdominal pain, intestinal dryness and constipation, rheumatic arthralgia and other diseases. At present, the method of extracting ferulic acid from Chinese medicinal materials is mainly the percolation method, and supercritical carbon dioxide extraction and ultrasonic extraction have also been reported. [...

AI Technical Summary

Problems solved by technology

[0005] The percolation method has a large amount of solvent and complicated post-treatment; although some researches have been carried out on the ultrasonic extraction method, it is only limited to a small-scale laboratory experiment on simple process conditions, and the use of supercritical carbon dioxide extraction technology to extract Ferulic acid has not been reported