Parwiyanti, ParwiyantiNurfitriana, AnnisaRahmawati, LailaDin Pangawikan, AldilaSantoso, Budi2024-08-282024-08-282023-12-21PARWIYANTI, P.; NURFITRIANA, A.; RAHMAWATI, L.; DIN PANGAWIKAN, A.; SANTOSO, B. Improving the antioxidant properties of coffee-leaf tea by adding areca nut powder and stevia leaves. Coffee Science, Lavras, v. 18, p. 1-7, 2023. DOI: 10.25186/.v18i.2160. Disponível em: https://coffeescience.ufla.br/index.php/Coffeescience/article/view/2160. Acesso em: 27 aug. 2024.1984-3909DOI: https://doi.org/10.25186/.v18i.2160http://www.sbicafe.ufv.br/handle/123456789/14595In this study, we described ways to improve the antioxidant properties of coffee-leaf tea by adding areca nut powder and stevia leaves. A non-factorial completely randomized design (RALF) was used in this study. We included five treatment formulations with five repetitions per formulation, which included F1 (100% coffee leaves: 0% areca nut: 0% stevia), F2 (95% coffee leaves: 1.5% areca nut: 3.5% stevia), F3 (90% coffee leaves: 3% areca nut: 7% stevia), F4 (85% coffee leaves: 4.5% areca nut: 10.5% stevia), and F5 (80% coffee leaves: 6% areca nut: 14% stevia). The results showed that adding areca nut powder and stevia leaves significantly improved the antioxidant properties of coffee-leaf tea. The IC50 value of the tea decreased by 67.96%, and its total phenol content increased by 38.85%. The water content and ash content of coffee-leaf tea produced in this study met the SNI standards. The results of the organoleptic tests showed whether the panelists accepted the color and taste of the samples.pdfenOpen accessAntioxidantareca nutcoffee leavesstevia leavestotal phenolicsCafeicultura::Café e saúdeArtigo