Ultrasonic-Assisted Extraction of Procyanidins Using Ionic Liquid Solution from Larix gmelinii Bark
Figure 1
Effects of ionic liquids anions (a), cations (b), and concentration (c) on the extraction efficiency of target analytes. Sample: 0.5 g; extractant volume: 5 mL; soak time: 2 h; ultrasound power: 250 W; ultrasound time: 30 min; ionic liquid concentration: 0.5 M for (a) and (b). The extraction efficiency is expressed as the observed values of target analytes, and the maximum amount in each curve was taken to be 100%.
