蒙药广枣提取物体外抗氧化活性研究

目的]研究蒙药广枣（Fructus Choerospondiatis）提取物的抗氧化活性,为了解广枣改善心血管系统的机制提供理论基础。方法]采用邻苯三酚自氧化法、铁氰化钾还原法和Fenton法分别对广枣不同提取物的抗氧化活性进行测定。结果]广枣粗提物及离子交换层析提取物均具有一定的抗氧化能力,粗提物的还原性以及清除羟基自由基（.OH）、超氧阴离子自由基（O2-.）的能力都较高,而离子交换层析提取物的还原性和清除.OH的能力较强,但去除O2-.的能力很弱。结论]利用不同的提取方法得到的广枣提取物具有不同的抗氧化活性,且不同物质抗氧化活性的机制不同。

Antioxidant Activity of Extracts from Mongolian Medicine Axillary choerospondias fruit in vitro

Objective]The research aimed to study the antioxidant activity of extracts from Mongalian medicine axillary choerospondias fruit(Fructus Choerospondiatis) so as to provide theoretical basis for understanding the mechanism of Fructus Choerospondiatis to improve the cardiovascular system.Method]The antioxidant activities of each extract from Mongalian medicine axillary choerospondias fruit were tested in vitro by using pyrogallol autoxidation method,potassium ferricyanide reduction method and Fenton method.Result]Both the crude extracts and ion exchange chromatography extracts exhibited certain antioxidant capacity and strong reductibility,the crude extracts had strong capacity to scavenge both ·OH and O-2·,while the ion exchange chromatography extracts had strong scavenging capability of ·OH,but weak capacity to scavenge O-2·.Conclusion]Extracts from Axillary choerospondias fruit by different methods had different antioxidant activity,and the antioxidant activity mechanism of different substances was also different.