Optimization of conditions for supercritical fluid extraction of flavonoids from hops (Humulus lupulus L.) / 浙江大学学报(英文版)(B辑:生物医学和生物技术)
Journal of Zhejiang University. Science. B
;
(12): 999-1004, 2005.
Article
in English
| WPRIM
| ID: wpr-263268
ABSTRACT
Waste hops are good sources of flavonoids. Extraction of flavonoids from waste hops (SC-CO(2) extracted hops) using supercritical fluids technology was investigated. Various temperatures, pressures and concentrations of ethanol (modifier) and the ratio (w/w) of solvent to material were tested in this study. The results of single factor and orthogonal experiments showed that at 50 degrees C, 25 MPa, the ratio of solvent to material (50%), ethanol concentration (80%) resulted in maximum extraction yield flavonoids (7.8 mg/g). HPLC-MS analysis of the extracts indicated that flavonoids obtained were xanthohumol, the principal prenylflavonoid in hops.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Mass Spectrometry
/
Flavonoids
/
Chemistry
/
Chromatography, High Pressure Liquid
/
Humulus
/
Chromatography, Supercritical Fluid
/
Ethanol
/
Methods
Language:
English
Journal:
Journal of Zhejiang University. Science. B
Year:
2005
Type:
Article
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