Change of Biological Activity of Melon (Cucumis melo L.) according to Frozen Storage Period

The change of biological activities of melon were investigated during frozen storage. The total phenolic concentrations in melon juice and water extract were 296.25 and , respectively. The total flavonoid contents in melon juice and water extract were 20.83 and , respectively. Antioxidant activities of melon juice and water extract were determined. The DPPH of water extract of melon (85.84%) was higher than the melon juice (60.58%). ABTS of melon juice and water extract were 94.50 and 99.30%, respectively. SOD-like activity and xanthine oxidase inhibitory activity of melon of water extracts were higher than those of melon juice. -Glucosidase inhibitory activity of melon juice and water extract were 22.42 and 23.43%, respectively. The changes in the antioxidant activity of melon was insignificant until 6 months of frozen storage. Therefore, it was expected that frozen storage of melon was useful preservation expedient for consistent supply of raw materials.