Chemical composition of volatile extract from Inula aschersoniana Janka var. aschersoniana growing in Bulgaria

Abstract

The chemical composition of the volatile oil of Inula aschersoniana was studied by GC and GC-MS. Forty-five constituents representing 92.9% of the total oil were detected. The oil contained fatty acids (55.2%) and alkanes (14.1%), followed by oxygenated monoterpenes (9.6%), sesquiterpenoids (7.1%) and aromatic compounds (4.5%). It is characterized by relatively low content of terpenoids in total 16.7% only of which linalool (2.1%) and τ-cadinol (2.2%) were the dominant components in this class of compounds. Cluster analysis (CA) was used for determination of the relationship between the species in Inula verbascifolia aggregate.