摘要
以高山冰缘十字花科植物高山离子芥(Chorispora bungeana)为研究对象,分析比较了其水提物和醇提物中总黄酮含量以及它们的抗氧化能力.结果表明:水提物和醇提物能够直接清除DPPH、超氧阴离子、羟自由基,抑制脂质过氧化.与水提物相比,醇提物总黄酮含量较高,抗氧化活性更强.高山离子芥水提物和醇提物在体外具有明显的抗氧化活性,而较高的总黄酮是其适应高山严酷环境的主要特性之一.研究结果对揭示极端环境下生长的植物抗性机理和资源的进一步开发利用提供了科学依据.
In this article,an alpine periglacial cruciferous plant named Chorispora bungeana is taken as study object,and the total flavonoids and antioxidant properties of water and ethanol extracts from Chorispora bungeana are analyzed and compared.It is revealed that water extract and ethanol extract are able to directly scavenge DPPH,superoxide anion,hydroxyl radical and inhibit peroxidation.The ethanol extract contains more total flavonoids and shows better antioxidant capacity as compared to water extract.The water extract and ethanol extract of Chorispora bungeana show significant antioxidant activities in vitro,while the higher content of total flavonoids is one of the main features to adapt the harsh alpine environment.The study result provides a scientific basis for revealing the resistance mechanisms of plants growing in extreme environments and for further developing and utilizing the resources.
出处
《冰川冻土》
CSCD
北大核心
2012年第4期959-964,共6页
Journal of Glaciology and Geocryology
基金
北京市属高等学校人才强教计划资助项目(PHR201108422
PHR201107150)资助
关键词
高山离子芥
总黄酮
抗氧化活性
Chorispora bungeana； total flavonoids； antioxidant activity；
