The total phenolic content (TPC) and antioxidant activity of fresh and dried Phyllanthus
amarus plant materials were evaluated using the Folin-Ciocalteau method, 2, 2-diphenyl-1-
picrylhydrazyl (DPPH) free radical scavenging activity and ferric reducing antioxidant power
(FRAP) assays. Different drying treatments led to significant reduction (P< 0.05) in
antioxidant properties of P. amarus methanolic extracts, with microwave drying causing the
highest decrease in TPC and antioxidant activity exhibited by the reduction in both radical ...