Citrullus lanatus (water melon) is a commonly consumed fruit worldwide. The seeds are often thrown away without considering its potential nutritional and medicinal benefits. In this study, a methanol extract of citrullus lanatus seeds was analyzed for the presence of bioactive secondary metabolites and to determine its ability to scavenge 2, 2‐ diphenyl ‐1‐ picrylhydrazyl (DPPH.) radical, superoxide anion radical (O2.‐), and nitric oxide radical (NO.). Quantitative phytochemical a...