菊芋叶黄酮类化合物的体外抗氧化活性研究  

Study on Antioxidant Activity of Flavonoids from Helianthus tuberosus leaves in vitro

作　　者：杨明俊[1] 王亮[1] 吴婧[1] 李志忠[1] 

机构地区：[1]兰州理工大学生命科学与工程学院,甘肃兰州730050

出　　处：《贵州农业科学》2011年第4期52-54,共3页Guizhou Agricultural Sciences

基　　金：兰州理工大学优秀青年资助计划(1008ZCX007);兰州理工大学博士启动基金(BS08200904)

摘　　要：为探讨菊芋叶黄酮类化合物的体外抗氧化活性,采用分光光度法测定了菊芋叶黄酮类化合物对O2-.和.OH的清除能力,以及对猪油氧化的抑制作用。结果表明:随菊芋叶黄酮类化合物浓度的增加,其对O2-.和.OH的清除能力也相应增加。当菊芋叶黄酮浓度达100μg/mL时,对O2-.的清除率达到66.45%,对.OH的清除率可达69.33%。此外,菊芋叶黄酮对油脂也表现出良好的抗氧化作用,可抑制猪油POV值的升高。Scavenging ability of flavonoid from Helianthus tuberosus leaves on O-2·and ·OH was determined by ultraviolet and visible spectrophotometer to explore its in vitro antioxidant activity.The results showed that the scavenging ability of flavonoid from Helianthus tuberosus leaves on O-2·and ·OH increased with the increase of flavonoid concentration,and up to 66.45% and 69.33% respectively when the flavonoid concentration was 100 μg/mL,Flavonoid from Helianthus tuberosus leaves also had good antioxidant activity on lard and could inhibit the increase of POV.

关 键 词：菊芋叶 黄酮类化合物 抗氧化性 清除率 

分 类 号：S632.9[农业科学—蔬菜学]