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

Authors : Züleyha ÖZER

Pages : 813-820

Doi:10.18596/jotcsa.780334

View : 43 | Download : 8

Publication Date : 2020-10-30

Article Type : Research Paper

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 insert ignore into journalissuearticles values(1,1-diphenyl-2-picrylhydrazyl); free radical scavenging activity and β-carotene linoleic acid assays. BHA insert ignore into journalissuearticles values(Butylated hydroxyanisole); and BHT insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(69.2 %); in leaf essential oil and carvacrol insert ignore into journalissuearticles values(64.9 %); was determined as the main compound. Also, flower essential oil was dominated by sesquiterpene hydrocarbons insert ignore into journalissuearticles values(73.5 %); and α-cubebene insert ignore into journalissuearticles values(36.4 %); was determined as major compound. For leaf oil, a high antioxidant capacity was determined, primarily due to carvacrol and p-cymene.
Keywords : Origanum onites, essential oil, carvacrol, α cubebene, antioxidant activity

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