Leba, M. A., Baunsele, A. B., Mau, S. D., Taek, M. M., Ruas, N. A., Ruas, A. D. C., Tukan, M. B., Boelan, E. G., & Komisia, F. (2025). 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), 9(5), 1933 – 1938. https://doi.org/10.26538/tjnpr/v9i5.7