Preparative separation of liquiritigenin and glycyrrhetic acid from Glycyrrhiza uralensis Fisch using hydrolytic extraction combined with high‐speed countercurrent chromatography

2020 ◽  
Vol 34 (4) ◽  
Author(s):  
Hao Wang ◽  
Hu Shan ◽  
Haitao Lü
Keyword(s):  
High Speed ◽  
Glycyrrhiza Uralensis ◽  
Glycyrrhetic Acid ◽  
Countercurrent Chromatography ◽  
Preparative Separation ◽  
Glycyrrhiza Uralensis Fisch

scholarly journals Preparative Separation and Purification of Liquiritin and Glycyrrhizic Acid from Glycyrrhiza uralensis Fisch by High-Speed Countercurrent Chromatography

2020 ◽  
Vol 58 (9) ◽  
pp. 823-830
Author(s):  
Hao Wang ◽  
Hu Shan ◽  
Haitao Lü
Keyword(s):  
Crude Extract ◽  
High Speed ◽  
Glycyrrhizic Acid ◽  
Retention Rate ◽  
Glycyrrhiza Uralensis ◽  
Ionization Mass ◽  
Countercurrent Chromatography ◽  
Separation And Purification ◽  
Isolation And Purification ◽  
Glycyrrhiza Uralensis Fisch

Abstract The technique of high-speed countercurrent chromatography (HSCCC) was applied to the preparative isolation and purification of liquiritin and glycyrrhizic acid from a crude extract of Glycyrrhiza uralensis Fisch for the first time. Using single factor and orthogonal design experiments, the best extraction conditions were 70% ethanol, 1:25 ratio of solid-to-liquid (w/v) and extracted 1.5 h at 80°C. The contents of liquiritin and glycyrrhizic acid in the crude extract were 1.3 and 5.3%, respectively. Using the two-phase solvent system of ethyl acetate–methanol–water (5:2:5, v/v), 6.0 mg liquiritin (the purity was 96.7%, and the recovery was 89.3%), and 20.5 mg glycyrrhizic acid (the purity was 98.9%, and the recovery was 77.1%) were obtained from 500 mg crude extraction by HSCCC, respectively. The retention rate of stationary phase was 51.0%. Their structures were identified by high-performance liquid chromatography, melting points, ultraviolet radiation, Fourier transform infrared (FTIR), Electrospray ionization mass spectrometry (ESI-MS), 1H Nuclear Magnetic Resonance (NMR) and 13C NMR spectra. The scavenging abilities of glycyrrhizic acid to 1,1-diphenyl-2-picrylhydrazyl and hydroxyl free radicals were stronger than those of liquiritin.

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