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Bupleurum kaoi Liu was mixed with ethanol at a ratio of 1:4 (v/w) for 24h to yield ethanol extract. Extract was further fractionated using supercritical CO 2 (SC-CO 2 ) under the following operating conditions: 40 o C and a pressure of 20, 15, 10 or 5MPa into R, F1, F2 or F3 fractions, respectively. To assess the selectivity of the fractionation, four fractions were characterized...
Propolis was mixed with ethanol at a ratio of 1:10 (v/w) for 24 h to yield propolis ethanol extract (E). Extract E was further fractionated with supercritical carbon dioxide (SC-CO 2 ) into four fractions (R, F1, F2 and F3). To evaluate the selectivity of the fractionation, extracts corresponding to four fractions were characterized in terms of total flavonoid contents, antioxidant abilities...
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