Ultrasonic-Assisted Extraction of Procyanidins Using Ionic Liquid Solution from Larix gmelinii Bark
Figure 3
HPLC chromatogram recorded at 280 nm of procyanidins in an extract obtained using 1.25 M [Bmim]Br (a) and 80% methanol (b) as extraction solvent. Retention times (min): 1: B4; 2: B2; 3: (+)-catechin; 4: C1; 5: (−)-epicatechin.
