Research Article

Optimization of Ultrasonic Extraction of Phenolic Compounds from Epimedium brevicornum Maxim Using Response Surface Methodology and Evaluation of Its Antioxidant Activities In Vitro

Figure 1

(a) Reductive ability of EFP and BHT. (b) DPPH radical scavenging effect of EFP and vitamin C.
(a)
(b)