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Hariyadi, D.M., Tedja, C.A. , Zubaidah, E., Yuwono, S.S. and Fibrianto, K. 2020. Optimization of brewing time and temperature for caffeine and tannin levels in Dampit coffee leaf tea of Robusta (Coffea canephora) and Liberica (Coffea liberica) . Potravinarstvo Slovak Journal of Food Sciences. 14, (Feb. 2020), 58–68. DOI:https://doi.org/10.5219/1212.