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Anthocyanin and Flavonoid Extracted from Watermelon Rind (Citrullus lanatus) with Two Different Colors of Watermelon Flesh: Yellow and Red

Watermelon or Citrullus lanatus is a common fruit for daily consumption in Indonesia. The anthocyanin and flavonoid in watermelon rind serve a good antioxidant effect for protecting human body health from free radical damage. The objective of the present work is to observe and calculate the amount of anthocyanin and flavonoid in watermelon rind with two different colourscolours of fruit flesh harvested in Indonesia, that are red and yellow. Total polyphenol content was also observed in this work. Total anthocyanin content was derived in this study was (0.02±0.000) up to (0.05±0.000) mg/L and the lowest and highest value were found in MTK and MK, respectively. For total flavonoid content, the value in a range between (0.71±0.000) mg/L and (1.63±0.002) mg/L. The polyphenol value was between (0.38±0.002) mg/mL and (0.57±0.001) mg/mL. The lowest and highest values of flavonoid and polyphenol were found in MTK and KK. This work provided information on three compounds that will be useful.