【摘要】 研究软枣猕猴桃总黄酮体外抗氧化活性,采用分光光度法测定软枣猕猴桃总黄酮对DPPH自由基、超氧阴离子自由基(O-2.)、羟自由基(.OH)清除能力,对铁离子的还原能力以及对脂质体过氧化的抑制作用,并与VC比较。结果表明,软枣猕猴桃总黄酮具有较强清除DPPH自由基的能力和还原力,可有效抑制脂质过氧化,对O-2.、.OH有一定的清除作用,且抗氧化作用与软枣猕猴桃总黄酮含量呈正相关,软枣猕猴桃总黄酮具有显著的抗氧化活性。更多还原

【Abstract】 Objective: To investigate the antioxidant activity in vitro of total flavonoids from Actinidia arguta.Methods: The scavenging capacities of total flavonoids from Actinidia arguta against DPPH,superoxide anion and hydroxyl free radicals the ferric reducing power and the inhibitory effect on lipid peroxidation were determined spectrometrically and compared with those of vitamin C.Results: Total flavonoids from Actinidia arguta revealed a strong ability to scavenge DPPH free radicals,reduce ferric ions and inhibit lipid peroxidation and had a certain scavenging effect against superoxide anion and hydroxyl free radicals in a dose-dependent manner.Conclusion: Total flavonoids from Actinidia arguta have excellent antioxidant activity.更多还原