Qualitative and Quantitative Changes in the Essential Oil of Origanum vulgare ssp. gracile as Affected by Different Harvesting Times
- سال انتشار: 1399
- محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 23، شماره: 1
- کد COI اختصاصی: JR_JASTMO-23-1_014
- زبان مقاله: انگلیسی
- تعداد مشاهده: 62
نویسندگان
Department of Horticultural Science, Faculty of Agriculture, Urmia University, P.O.Box: ۱۶۵, Urmia, Islamic Republic of Iran.
Department of Horticultural Science, Faculty of Agriculture, Urmia University, P.O.Box: ۱۶۵, Urmia, Islamic Republic of Iran.
Research Institute of Forests and Rangelands, P.O.Box: ۱۳۱۸۵-۱۱۶, Tehran, Islamic Republic of Iran.
Research Center of Agriculture and Natural Resources of Kurdistan, P.O. Box ۶۶۱۶۹-۳۶۳۱۱-۷۱۴, Sanandaj, Islamic Republic of Iran.
چکیده
Qualitative and quantitative variations in the essential oil of wild growing Origanum vulgare L. ssp. gracile plants were studied in response to different phenological stages (pre, full and post-flowering). The essential oil of air-dried leaves was isolated by water distillation using a Clevenger-type apparatus and was analyzed by Gas Chromatography (GC) and Gas Chromatography–Mass Spectrometry (GC/MS). The highest (۱.۸۷%) and the lowest (۱.۰۱%) essential oil content were obtained from post-flowering and pre-flowering stages, respectively. In total, ۲۴ components were identified and quantified in three phenological stages representing ۹۶.۷۵, ۹۷.۶۳, and ۹۸.۵۹% of the oil, respectively. Carvacrol (۴۶.۶۲, ۴۶.۵ and ۲۷.۶%), ρ-cymene (۷.۷۶, ۱۳.۵۴ and ۳۷.۰۸%) and γ-terpinene (۲۱.۵۴, ۱۳.۹۱ and ۶.۸۲%) were the main constituents of essential oils in pre, full, and post-flowering stages, respectively. Oxygenated monoterpenes (۴۳.۳۵-۶۱.۳۲%) and monoterpene hydrocarbons (۳۰.۸۱-۴۸.۰۲%) were the main classes of identified compounds in three essential oils. According to the findings of this research, the post-flowering stage can be considered as the most appropriate time for obtaining the highest essential oil content, but to achieve the highest rate of phenolic compounds, the pre-flowering and full-flowering stages can be recommended.کلیدواژه ها
Carvacrol, Oregano, ρ-Cymene, Phenological stage, γ-Terpinene.اطلاعات بیشتر در مورد COI
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