Izza, Arifah Nurul, Catur Retno Lestari, and Umar Hidayat , trans. 2026. “Differences in Sugar Concentration on Flavonoid Levels in Roselle Kombucha (Hibiscus Sabdariffa L.) As An Antioxidant Beverage”. Journal of Biomedical Sciences and Health 3 (1): 70-76. https://doi.org/10.34310/jbsh.v3.i1.308.