Flavonoids in Different Parts of Lysimachia clethroides Duby Extracted by Ionic Liquid: Analysis by HPLC and Antioxidant Activity Assay

Figure 6

Effect of solid-liquid ratio on extraction yields. Type of IL: [BMIM]BF₄; concentration: 0.5 mol⋅L⁻¹; the particle size: 24 mesh (a) and 40 mesh (b); ultrasound time: 30 min; ultrasound power: 500 W; centrifugation speed: 5000 r⋅min⁻¹.

(a)

(b)