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The extraction of baicalin, wogonoside, baicalein, and wogonin from Radix Scutellariae was performed using subcritical water and conventional extraction. Compared with ethanol extraction, subcritical water extraction required shorter extraction time, yielded a higher efficiency, and required less extraction solvent. The stability of four flavonoids under subcritical water conditions was investigated,...
The removal of rhodamine B by benzyl‐functionalized ionic liquids (ILs) from water was carried out. Effects of aqueous pH value, concentration of rhodamine B, phase volume ratio, and the presence of salt on the extraction efficiency have been investigated. Experimental results showed that the extraction efficiency of rhodamine B decreased with the increase of pH value. Thermodynamic studies indicated...
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