raharjo, aditya. “Optimization of Boiling Time for Maximum Curcuminoid Yield in a Traditional Turmeric Tamarind Jamu Using UV-Vis Spectrophotometry: Optimasi Waktu Perebusan Untuk Hasil Kurkuminoid Maksimum Dalam Jamu Kunyit Asam Jawa Tradisional Menggunakan Spektrofotometri UV-Vis”. Journal of Health Economic and Policy Research (JHEPR) 4, no. 1 (April 2, 2026): 82–86. Accessed April 4, 2026. https://ejournal.ump.ac.id/jhepr/article/view/378.