Quantity and Composition of the SDE Prepared Essential Oil of Nepeta macrosiphon Boiss
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Abstract
The essential oil from flowering aerial parts of Nepeta macrosiphon Boiss. growing wild in Kermanshah Province, Iran, was analyzed by GC/MS. This essential oil was prepared by a modified Likens-Nickerson's simultaneous distillation-extraction (SDE) method. Forty-five compounds consisting 95.1% of the total components were identified from the oil obtained with a yield of 0.1%w/w. Among them, spathulenol (14.1%), germacrene D (9.2%) and caryophyllene oxide (8.1%) were the major components of the oil.