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7671469 
Journal Article 
Purification of astilbin and isoastilbin in the extract of smilax glabra rhizome by high-speed counter-current chromatography 
Du, Q; Li, L; Jerz, G 
2005 
Yes 
Journal of Chromatography A
ISSN: 0021-9673
EISSN: 1873-3778 
1077 
98-101 
English 
Purification of astilbin from the rhizome extract of Smilax glabra was conducted using a high-speed counter-current chromatograph equipped with a 700 mL column. In a single operation, 1.5 g of crude sample was separated to yield 105 mg of component astilbin and 48 mg of isoastilbin while the upper phase of the two-phase solvent system composed of n-hexane-n-butanol-water (1:1:2, v/v/v) was used for stationary phase. The chemical structures of the two flavonoid glycosides were confirmed by electrospray ionization ion trap multiple mass spectrometry and nuclear magnetic resonance experiments. 
Astilbin; Counter-current chromatography; Liliaceae; Purification; Smilax glabra