RUHIMAT, Undang; MUTMAINAH, Rahayu Nirmatul; RAMDAN, Siti Rahmah Kurnia; FIRDAUS, Nabil Ridla. Utilization of Purple Sweet Potato Juice As an Alternative Violet Crystal in Coloring Streptococcus sp Bacteria and Escherichia coli. JURNAL KESEHATAN STIKes MUHAMMADIYAH CIAMIS, [S. l.], v. 11, n. 2, p. 149–156, 2025. DOI: 10.52221/jurkes.v11i2.769. Disponível em: https://dev-ojs.stikesmucis.ac.id/index.php/jurkes/article/view/769. Acesso em: 17 dec. 2025.