2026. Comparative Determination of Ascorbic Acid in Apple (Malus Pumila), Lime (Citrus Aurantiifolia) andWatermelon (Citrullu Lanatus) Using Uv Spectrophotometric and Titrimetric Methods. Nigerian Journal of Pharmaceutical and Biomedical Research (NJPBR). 6, 1 (Apr. 2026), 10–17. DOI:https://doi.org/10.55639/seet6w51.