Antioxidant Properties of Water Extract from Acorn

초록

α-amylase, α-glucosidaseAcorn has been used for local diet in Korea. It has benconsumed in the form of bread cake and other types offoods. The beneficial use of acorn in the human diet hasbeen reported in Serbia since the end of the 19th century(Pelglucosidase and α -amylase. The water extract of acorn exhibited strong antioxidant and antidiabetic related activities in the tested model systems. Solvent fractionation of the water extract revealed that the water fraction and the EtOAc fraction had strong antioxidant activity, and inhibitory activity on α -glucosidase and α -amylase. The water fraction exhibited higher DPPH radical scavenging activity (EC 50 = 7 . 1 9 µ g/mL) than that of α -tocopherol (EC 50 = 7 . 5 9 µ g/mL). It is considered that water extract of acorn has the potential for natural antioxidant and anti-diabetic products.

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