LEBA, Maria A.U.; BAUNSELE, Anselmus B.; MAU, Sisilia D.B.; TAEK, Maximus M.; RUAS, Noemia A.; RUAS, Adilson D. C.; TUKAN, Maria B.; BOELAN, Erly G.; KOMISIA, Faderina. Development and Validation of Purple Sweet Potato (Ipomea batatas L.) Pigment as a Titrimetric Indicator for Hydrochloric Acid Quantification. Tropical Journal of Natural Product Research (TJNPR), [S. l.], v. 9, n. 5, p. 1933 – 1938, 2025. DOI: 10.26538/tjnpr/v9i5.7. Disponível em: http://mail.tjnpr.org/index.php/home/article/view/6384. Acesso em: 29 jun. 2025.