Flavonoid Concentration and Tyrosinase Inhibition Activity of Ethanol Extract of Piper crocatum (Piper crocatum var. Ruiz & Pav) from Various Regions in Indonesia and Their Correlations. Jurnal Kimia Valensi, [S. l.], v. 9, n. 1, p. 42–52, 2023. DOI: 10.15408/jkv.v9i1.31426. Disponível em: https://journal.uinjkt.ac.id/valensi/article/view/31426. Acesso em: 21 nov. 2025.