MIETA WIDYA RAMADHANI; FAISAL; AHMAD SYAUQI. Pengaruh Konsentrasi Ekstrak Daun Sirih Hitam (Piper betle var nigra) Terhadap Zona Hambat Bakteri Salmonella typhi dan Escherichia coli : Concentration Effect of Black Betel Leaf Extract (Piper betle var nigra) on the Inhibition Zone of Salmonella typhi and Escherichia coli Bacteria . Jurnal SAINS ALAMI (Known Nature), [S. l.], v. 8, n. 1, p. 56–64, 2025. DOI: 10.33474/j.sa.v8i1.18830. Disponível em: https://knownnat.unisma.ac.id/index.php/knownnat/article/view/18830. Acesso em: 21 jul. 2026.