Watermelon (Citrullus lanatus) is a commonly consumed fruit native to southern Africa, and now cultivated worldwide. It is eaten fresh in slices, in fruit salads, or as a juice. Due to its high content of water (90%), watermelon juice has been used as a source of liquid in dry climates. The seeds are also edible and the roasted seeds are eaten as a snack in China and some Asian countries. Watermelon contains various nutrients including ascorbic acid, β-carotene, citrulline, and lycopene.