Total Phenolic and Flavonoid Content and Evaluation of Antioxidant Activity of Roselle (Hibiscus sabdariffa), Lemongrass (Cymbopogon citratus), and Ginger (Zingiber officinale) Combination Extract Based on FRAP Methods. JURNAL FARMASIMED (JFM), [S. l.], v. 9, n. 1, p. 293–298, 2026. DOI: 10.35451/jfm.v9i1.3914. Disponível em: https://ejournal.medistra.ac.id/index.php/JFM/article/view/3914. Acesso em: 1 nov. 2026.