Santoso, B., Sulthanah Zhafirah, A., Priyanto, G., Wijaya, A., Parwiyanti and Hermanto 2023. Incorporation of gambir catechin crude extract in robusta instant coffee made from different coffee processing methods. Potravinarstvo Slovak Journal of Food Sciences. 17, (Nov. 2023), 945–954. DOI:https://doi.org/10.5219/1907.