Chemical Composition and Antioxidant Activities of Leaf and Flower Essential Oils of Origanum onites L. Growing in Mount Ida-Turkey

Q3 Chemistry Journal of the Turkish Chemical Society, Section A: Chemistry Pub Date : 2020-10-30 DOI:10.18596/jotcsa.780334

Züleyha Özer

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引用次数: 4

Abstract

The chemical composition of leaf and flower essential oils of Origanum onites L. were analyzed using Thermo Scientific TSQ GC-MS/MS. Also, antioxidant activities of the leaf and flower essential oils were investigated by using DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging activity and β-carotene linoleic acid assays. BHA (Butylated hydroxyanisole) and BHT (Butylated hydroxytoluene) were used as standards. The essential oil yields of O. onites were 1.75 % for leaves, and 4.25 % for flowers. A total of twenty-three compounds representing 99.9 % of leaf oil and twenty-four compounds constituted 99.6 % of the flower oil were determined. Oxygenated monoterpenes were detected at a high percentage (69.2 %) in leaf essential oil and carvacrol (64.9 %) was determined as the main compound. Also, flower essential oil was dominated by sesquiterpene hydrocarbons (73.5 %) and α-cubebene (36.4 %) was determined as major compound. For leaf oil, a high antioxidant capacity was determined, primarily due to carvacrol and p-cymene.

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土耳其艾达山土一枝花叶挥发油的化学成分及抗氧化活性

采用Thermo Scientific TSQ GC-MS/MS对牛至叶精油和花精油的化学成分进行了分析。采用DPPH（1,1-二苯基-2-苦基肼基）自由基清除活性和β-胡萝卜素-亚油酸测定法研究了叶精油和花精油的抗氧化活性。BHA（丁基羟基茴香醚）和BHT（丁基羟基甲苯）用作标准品。燕麦的精油产量为叶1.75%，花4.25%。共测定了23种化合物，占叶油的99.9%，24种化合物占花油的99.6%。叶精油中含氧单萜含量较高（69.2%），主要成分为香芹酚（64.9%）。花精油以倍半萜烃（73.5%）为主，α-立方烯（36.4%）为主要化合物。对于叶油，确定了较高的抗氧化能力，主要是由于香芹酚和对cymene。

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