Study on the antioxidative efficiencies of new chalcones from propolis of El Salvador during methyl linoleate oxidation in micellar solutions

摘要

The antioxidawnt efficiency for two new chalcones isolated from El Salvador's jpropolis:2',3',4-trihydroxy-4'-methoxy-chalcone (BH_2) and 2',3'-dihydroxy-4,4'-dimthoxy-chalcone (AH_2) were determiend by analyzing the kinetics of oxygen consumption in SDS micellar systems.The results demonstrated that AH_2 and BH_2 showed moderate chain-breaking activities higher than naringenin,but lower than caffeic acid,butylated hydroxy toluene and DL-alpha-tocopherol.