Siregar, T. H., F. R. . Farikhin, S. Widodo, Y. A. Purwanto, L. P. Manalu, T. Yulni, N. Yustiningsih, Harianto, J. Firdaus, P. Yenni Fauziah, E. Suwandi, M. A. Jaya Mulia, Astuti, and T. E. P. Mariastuty. “Rapid Prediction of Total Gingerol Content and Harvest Age Classification of Fresh Indonesian Red Ginger Using UV-Vis Spectroscopy”. Science and Technology Indonesia, vol. 11, no. 4, Sept. 2026, pp. 1406-22, doi:10.26554/sti.2026.11.4.1406-1422.