Ibau M, Sulistiarini R, Salam S. Penentuan Nilai Sun Protection Factor (SPF) Ekstrak Etanol Rimpang Kunyit Hitam (Curcuma caesia ROXB.) dengan Metode Spektrofotometri UV-Vis: Determination of the Sun Protection Factor (SPF) Value of Ethanol Extract of Black Turmeric Rhizome (Curcuma caesia ROXB.) Using the Method UV-Vis Spectrophotometry. Proc. Mul. Pharm. Conf. [Internet]. 2023 Dec. 31 [cited 2026 Jun. 20];18(1):92-6. Available from: https://mpc.jurnalfamul.com/index.php/mpc/article/view/710