Application of ultrasound-assisted processing in improving the purification effect and bioactivity of licorice flavonoids from licorice residues

Licorice residues are rich in flavonoids and are considered to be valuable reusable resources with broad applications and a high economic value. In view of above, the ultrasound-assisted adsorption/desorption of licorice flavonoids (LFs) on HPD-100 resins was studied. This process was studied at different temperatures (20–30 ℃) using ultrasound at different power densities (0.2, 0.35, 0.5 W/cm2). The higher ultrasonic power density (0.5 W/cm2)...