Composition of the essential oil of Stachys germanica from Serbia

Abstract

Seventy-three compounds were identified in the essential oil of S. germanica, which represents 92.87% of the total oil, through their retention indexes and mass spectra obtained using GC/MS. The components with their percentage peak area are listed in Table 1. The main components were borneol (9.27%), bicyclogermacrene (8.97%), β-farnesene (5.70%), and spathulenol (4.60%). S. germanica oil contains monoterpene hydrocarbons (0.96%), oxygenated monoterpenes (14.07%), sesquiterpenes (34.23%), and oxygenated sesquiterpenes (24.89%). The essential oil of this species contains also aliphatic hydrocarbons (14.33%) and diterpenes (1.63%). TABLE 1. Chemical Composition of the Essential Oil of S. germanica