Comparative Quantitative Determination of Vitamin C in Commercial Tablet and Syrup Formulations, and Selected Natural Sources (Mango and African Star Apple), Using Iodometric and UV–Visible Spectroscopic Methods. African Journal of Biological and Physical Sciences, [S. l.], v. 1, n. 1, p. 38–44, 2026. Disponível em: https://www.afjbps.org/journal/article/view/61.. Acesso em: 14 oct. 2026.