紫荆花精油体外抗氧化活性研究

摘要

研究紫荆花精油的体外抗氧化活性.采用水蒸气蒸馏法提取紫荆花的精油,以ABTS·、·O2-、亚硝酸钠清除作用和金属离子螯合作用为指标评价紫荆花精油的体外抗氧化活性.研究结果表明,紫荆花25%精油对ABTS·、·O2-、亚硝酸钠的清除作用和金属离子螯合作用的效果明显,其ED50值分别为24.11、64.46、101.55、54.65μL.紫荆花精油具有较好的体外抗氧化活性,样品量与抗氧化活性存在剂量依赖关系.%To study the antioxidant activity of essential oil from Cercis chinensis flowers in vitro. The essential oil from Cercis chinensis flowers was extracted by steam distillation and its antioxidant activity was evaluated by scavenging capacity againstABTS·, sodium nitrite, and metal chelating ability. The 25%essential oil exhibited significant scavenging capacity against ABTS·, ·O2-, sodium nitrite, and metal chelating ability with ED50 value of 24.11, 64.46, 101.55, 54.65 μL,respectively. The essential oil from Cercis chinensis flowers exhibited significant antioxidant activity in vitro in a concentration-dependent fashion.