It is a kind of compound essential oil with anti-free radical function disclosed herein person, mainly includes citronellol, eugenol, citral, Eugenol methyl ether and Thymol ingredient. Through with the measuring method of what analysis substance oxidation resistance, such as: scavenging ability of DPPH free radical removes ABTS+ extensivelyFree radical ability, chelated metal ions ability and reducing power detect the compound essential oil of the present invention, also confirm that the compound essential oil of the present invention has excellent antiradical activities and oxidation resistance really.本發明所揭露者為一種具有抗自由基功能之複方精油，其主要包括有香茅醇、丁香酚、檸檬醛、甲基丁香醚以及百里香酚成分。透過廣泛用於分析物質抗氧化能力之測定方法，諸如：清除DPPH自由基能力、清除ABTS+自由基能力、螯合金屬離子能力以及還原能力來檢測本發明之複方精油，亦證實本發明之複方精油確實具有優異之抗自由基能力與抗氧化能力。
