Validation of Methods and Determination of Curcumin Levels in Carrying Herbal Medicine of Turmeric Tamarind Using UV-Vis Spectrophotometer. Indonesian Journal of Chemical Science, [S. l.], v. 14, n. 2, 2025. DOI: 10.15294/ijcs.v14i2.14192. Disponível em: https://journal.unnes.ac.id/journals/ijcs/article/view/14192. Acesso em: 25 dec. 2025.