Differences in Sugar Concentration on Flavonoid Levels in Roselle Kombucha (Hibiscus sabdariffa L.) As An Antioxidant Beverage. JBSH [Internet]. 2026 Feb. 28 [cited 2026 Feb. 28];3(1):70-6. Available from: https://ejournal.unkaha.ac.id/index.php/jbsh/article/view/308