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Siregar, T.H., Farikhin, F.R. , Widodo, S., Purwanto, Y.A., Manalu, L.P., Yulni, T., Yustiningsih, N., Harianto, Firdaus, J., Yenni Fauziah, P., Suwandi, E., Jaya Mulia, M.A., Astuti and Mariastuty, T.E.P. 2026. Rapid Prediction of Total Gingerol Content and Harvest Age Classification of Fresh Indonesian Red Ginger Using UV-Vis Spectroscopy. Science and Technology Indonesia. 11, 4 (Sep. 2026), 1406–1422. DOI:https://doi.org/10.26554/sti.2026.11.4.1406-1422.