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“PEMANFAATAN EKSTRAK KOL UNGU (BRASSICA OLERACEA VAR. CAPITATA F. RUBRA) SEBAGAI INDIKATOR PH ALAMI: UJI RENTANG PH DAN STABILITAS WARNA”, JSA, vol. 1, no. 1, pp. 195–198, Jul. 2026, Accessed: Jul. 07, 2026. [Online]. Available: https://journal-edu.org/index.php/jsa/article/view/232