Method for preparing radix astragali extract at room temperature

Abstract

The invention relates to a method for preparing the radix astragali extract at the room temperature. The method comprises the following steps: drying astragalus, pulverizing, and putting into an infrared plasma surface modification device; The device comprises: a sealed and vacuumizable shell, an ultrasonic tank body arranged in the shell, an infrared ray emitting device and a plasma generating device arranged on the ultrasonic tank body; Water is added into the ultrasonic tank, and nanometer-sized particles of astragaloside IV and calycosin are added at room temperature with vacuum degree of10-25mmHg, star an ultrasonic device, an infrared ray emitting device and a plasma generate device, extracting and filtering to obtain astragalus extract. The preparation method of the astragalus extract under normal temperature has the characteristics of low energy consumption, clean environment protection and high yield.

Description

technical field [0001] The invention belongs to the technical field of extracting effective components of traditional Chinese medicinal materials, and in particular relates to a preparation method of astragalus extract at normal temperature. Background technique [0002] Traditional Chinese medicine mainly originated in China, and is a drug used to prevent, diagnose, treat diseases or regulate human body functions under the guidance of TCM theory. Most of them are herbal medicines, but there are also animal medicines, mineral medicines and some chemical and biological products. Traditional Chinese medicine is divided into Chinese patent medicine and traditional Chinese medicinal materials according to the processing technology. For Chinese herbal medicines, how to efficiently extract their active ingredients is one of the current research hotspots. [0003] For a long time, clinical Chinese herbal medicines have been mainly decocted in water. The traditional decoction ext...

AI Technical Summary

Problems solved by technology

The traditional decoction extraction process is: after the Chinese medicinal materials are picked, they are washed, dried, sliced, and then boiled with water, which takes a long time and produces a large amount of waste residue. The waste residue of medicinal materials needs to be landfilled, which is not conducive to environmental protection

[0004] With the penetration of modern medicine in the field of traditional Chinese medicine and the success of artemisinin, people have realized that the traditional decoction method, solvent ultrasonic extraction, etc. may not be the best solution, because during the decoction process, many For components such as volatile oil, many unstable structures are also destroyed during the decoction process at 60°C to 100°C, and ultrasonic extraction requires a solvent

In the prior art, chemical methods are also used to extract the active ingredients of traditional Chinese medicine, but there are disadvantages such as unfavorable to environmental protection, high energy consumption, long process flow, time-consuming labor, and high industrialization cost.

[0005] In order to solve the defects of high-temperature cooking and extraction, a normal-temperature extraction process has also appeared, but the existing normal-temperature extraction process does not have a high-temperature cooking process, so that bacteria cannot be killed, and there are potential safety hazards; and the existing normal-temperature extraction process has no active substances Small, difficult to be extracted in water, usually need to use organic solvent to extract, add catalyst, modifier, etc. high production cost