Total phenolic content and antioxidant of activity of red-fleshed pitahaya (Hylocereus polyrhizus) cactus methanol and ethyl acetate extract

Folin-Ciocalteu method was used to determine the total phenolic content (TPC) of plant sample. DPPH and FRAP were the two antioxidant assays used. TPC was identified in gallic acid equivalents (mg GAE/g), % scavenging activity, and IC50 value in DPPH assay, and reducing power capacity in FRAP assay. Data showed methanol extract having higher TPC (15.334 mg/g) and lower IC50 (389.40 mcg/ml) in DPPH assay, and higher reducing power in FRAP assay. Also, there is a significant difference (