
Phytochemical profile of Orthosiphon aristatus extracts after storage: Rosmarinic acid and other caffeic acid derivatives
Keywords: Orthosiphon aristatus; Traditional herb; Caffeic acid; Rosmarinic acid; Salvianolic acid; Caffeine; DPPH; 1,1-diphenyl-2-picrylhydrazyl; ABTS; 2,2â²-azino-bis[3-ethylbenzothiazoline-6-sulfonic acid]; HPLC; high performance liquid chromatography; UPLC-MS/