Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of extracting licorice flavone from licorice slag

A technology of licorice flavonoids and extraction methods, applied in the direction of organic chemistry, etc., can solve the problems of complex extraction methods and high costs of licorice flavonoids

Inactive Publication Date: 2006-03-29
李秉
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method for extracting licorice flavonoids from licorice waste residue has a patent application with the application number "200310115114.2". The method for extracting licorice flavonoids in this patent application is relatively complicated and the cost is relatively high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 (warm soaking extraction)

[0019] Extract 100 grams of licorice residue with ethyl acetate as a solvent for 3 times, soak the residue of licorice with 500 grams of ethyl acetate at a temperature of 50 ° C and keep it warm for 2 hours; combine the extracts and recover the ethyl acetate; then remove The organic solvent extract was dried to obtain 4.8 grams of licorice flavonoids, with a yield of 4.80% and a total flavonoid content of 30.8%.

Embodiment 2

[0021] Extract 100 grams of licorice residue with ethyl acetate as a solvent twice, soak the residue of licorice with 1000 grams of ethyl acetate at a temperature of 50°C and keep it warm for 2 hours; combine the extracts, recover the ethyl acetate; then remove The organic solvent extract was dried to obtain 4.78 grams of licorice flavonoids, with a yield of 4.78% and a total flavonoid content of 37.4%.

Embodiment 3

[0022] Embodiment 3 (cold soaking extraction)

[0023] Extract 100 grams of licorice residue with ethyl acetate as a solvent for 3 times, soak the licorice residue with 1500 grams of ethyl acetate at a temperature of 25°C, and then extract by percolation; combine the extracts, and recover the ethyl acetate and then dry the extract after removing the organic solvent to obtain 4.6 grams of licorice flavonoids, with a yield of 4.60% and a total flavonoid content of 33.6%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A process for extracting licoflavone from the dregs of liquorice root includes such steps as cold immersing, or warm immersing, or reflux extracting in ethyl acetate, collecting liquid extract, removing organic solvent and drying. Its advantages are high output rate and high purity.

Description

Technical field: [0001] The invention relates to a method for extracting licorice flavonoids, in particular to a method for extracting licorice flavonoids from licorice residue. Background technique: [0002] The traditional Chinese medicine licorice is the dried root or rhizome of Glycyrrhiza uralensis Fisch., Glycyrrhiza inflata Bat. or Glycyrrhizaglabra L., a leguminous plant. It is flat in nature and sweet in taste, can harmonize the middle and nourish qi, moisten the lungs and eliminate phlegm, clear heat and detoxify, invigorate the spleen and stomach, and harmonize various medicines. It is used for sore throat, cough, palpitation, shortness of breath, cough with excessive phlegm, abdominal pain, relief of drug toxicity, etc. Its main components are triterpene saponins (glycyrrhizic acid, etc.) and licorice flavonoids. [0003] At present, there are many studies on the extraction process of glycyrrhizic acid, and they are relatively mature. But for the extraction pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07D311/36C07D311/40
Inventor 李秉黄吉胜
Owner 李秉
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com