蕈树叶芳香精油成分分析及其抗氧化活性研究

Composition Identification and Antioxidant Activity from Leaf Essential Oil of Altingia chinensis(Champ.)

为了解蕈树叶芳香精油化学组分及抗氧化活性,采用气相色谱-质谱联用技术(GC-MS)结合Kovats保留指数(K I)比较的方法对其进行了成分分析,并运用二种体外方法对其抗氧化活性进行了测定。结果表明蕈树叶精油以倍半萜烯类为主(占62.39%),主要特征成分为双环大根香叶烯(10.71%)、(E)-丁香烯(9.96%)和α-依兰油烯(8.92%)。该精油具有中等程度的自由基清除活性和抗脂质过氧化活性。其抗氧化活性可能与精油中的酚类物质5-羟基白菖莆烯(2.97%)以及醇类物质1-表橙椒醇(3.12%)和(Z)-白檀油烯醇(2.12%)等化合物有关。

The composition and antioxidant activity of the leaf essential oil from Altingia chinensis（ Champ. ） were investigated. The GC-MS analyses as well as comparison of the Kovats retention indices （KI） of elution peaks with reported data were used in compound identification of the essential oil; two in vitro methods were used in the preliminary evaluation of antioxidant activity for the essential oil. The essential oil is constituted mainly by sesquiterpenes （62.39%） and dominated with bicyclogermacrene （ 10.71% ）, （E） -caryophyllene （9.96 % ） and α-muurolene （ 8.92% ）. The essential oil has a moderate radical scavenging and anti- peroxidation effect in lipid system. The antioxidant activity of the essential oil is possibly associated with its sesquitemoid compounds,such as 5-hydroxycalamenene （2.97%） ,cubenol（ 1- epi-） （3.12%）, （Z）-α-santalol （2. 12%） and so on.