Comparison of total phenolic compounds and antioxidant activity of four brands of infusions of Hibiscus sabdariffa (Malvaceae) marketed in Costa Rica. Uniciencia [Internet]. 2014 Jan. 1 [cited 2024 Jul. 27];28(1):34-42. Available from: https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/5591