LEBA, Maria A.U. et al. Exploring Purple Sweet Potato Pigment as An Eco-Friendly Titration Indicator for Acid Determination. Tropical Journal of Natural Product Research (TJNPR), [S. l.], v. 8, n. 6, p. 7403–7409, 2024. DOI: 10.26538/tjnpr/v8i6.10. Disponível em: https://tjnpr.org/index.php/home/article/view/4193. Acesso em: 11 mar. 2025.