Identification and quantification of bioactive compounds and antioxidant properties of many fruits and vegetables are well defined; however, studies on the characterization and quantification of the phytochemical and antioxidant properties of watermelon are very limited. It has been reported that the levels of the healthpromoting bioactive compounds and the antioxidant activity of fruits and vegetables are strongly influenced by genotype differences and external factors such as agro-technical processes, environmental conditions, ripening stage, and harvest and postharvest manipulations