Essential oil compositions of Teucrium fruticans, T. scordium subsp. scordioides and T. siculum growing in Sicily and Malta

In the present study, the chemical composition of the essential oils from the aerial parts of Teucrium fruticans L. collected in Sicily and Malta, Teucrium scordium subsp. scordioides (Schreb.) Arcang. and Teucrium siculum (Raf.) Guss., collected in Sicily, were evaluated by GC-MS. The main volatile components of both T. fruticans collections were germacrene D (29.4% and 50.0%), (E)-beta-caryophyllene (19.6% and 21.9%), and 1-octen-3-ol (19.7% and 7.4%); T. scordium subsp. scordioides essential oil was rich in caryophyllene oxide (25.8%), alpha-pinene (19.4%) and beta-pinene (8.5%); T. siculum essential oil was rich in (E)-beta-caryophyllene (30.9%), 1-octen-3-ol (9.0%), alpha-humulene (8.6%) and germacrene D (8.0%). The chemotaxonomic relationship with other members of the respective botanical sections was discussed. [GRAPHICS] .

Automated summary

This study evaluated the chemical composition of essential oils from different geographical locations of Teucrium species, revealing the main volatile components and discussing their chemotaxonomic relationship with other plant members of respective botanical sections.