不同年份新会陈皮挥发油的抗氧化活性评价

Antioxidant capacities of essential oils in Xinhui Pericarpium Citri Reticulatae at different storage period

目的:评价2016、2014、2013、2011、2006 5种不同年份新会陈皮挥发油的抗氧化活性。方法:利用DPPH自由基清除实验、ABTS自由基清除实验、羟基自由基清除实验和总还原能力测定实验综合评价不同年份的新会陈皮挥发油的抗氧化能力。结果显示:不同年份的新会陈皮挥发油均表现出DPPH、ABTS、羟基自由基清除能力和还原能力,且抗氧化效果与挥发油的体积分数呈量效关系。从选用的样品看,2014年份的样品具有最好的DPPH和ABTS自由基清除能力;2016年份的样品具有最好的羟基自由基清除能力和总还原能力。

The objective of this study was to evaluate the antioxidant capacity of essential oils(EOs) from certain Pericarpium Citri Reticulatae(PCR) harvested and stored in different years. Samples of PCRs were harvested in 2016, 2014, 2013, 2011 and 2006, respectively. The antioxidant capacity of PCR EOs was determined by DPPH radical scavenging assay, ABTS radical scavenging assay, hydroxyl radical scavenging assay and total reducing power measurement. The major results are as follows: The antioxidant capacity increased with the concentrate of PCR EOs. PCR EOs of 2014 had the best DPPH and ABTS scavenging capacity. PCR EOs of 2016 had the best hydroxyl radical scavenging capacity and reducing power.