Study on Antioxidant Activity of Kiwi Root Extract in Vitro

[Objective] The aim is to explore antioxidation of kiwi fruit root extract in vitro.[Method] Using DPPH free radicals,superoxide,hydroxyl radicals,hydrogen peroxide and reduction force reaction system to determine antioxidation of kiwi fruit root extract in vitro and comparing with vitamin C experiments.[Result] Under experimental conditions,the scavenging or inhibition of ERHM on DPPH free radicals,superoxide anion(O-2·),hydroxyl radical(·OH) and H2O2 are stronger,and show good dose-effect relationship,also has some reducing power.The EC50 for the elimination of DPPH radical is 8.03 μg/ml and for superoxide anion(O-2·) is 1.28 mg/ml,inhibition of hydroxyl radical(·OH) capacity is up to 69.4%,when the concentration is 100 μg/ml,the clearance rate of hydrogen peroxide(H2O2) is 42%.[Conclusion] Kiwi root extract has strong reducing power,can effectively remove the DPPH and superoxide anion radicals,and inhibit the production of hydroxyl radicals.Therefore,ERHM active ingredient has the more significant antioxidant activity.