Volatile constituents of three Thymus sipyleus Boiss. subspecies from different sites in Turkey

Hale Gamze Ağalar; Mine Kürkçüoglu; Kemal Hüsnü Can Başer; Kenan Turgut

doi:10.3906/kim-2103-6

Volatile constituents of three Thymus sipyleus Boiss. subspecies from different sites in Turkey

Turk J Chem. 2021 Sep 20;45(6):1959-1967. doi: 10.3906/kim-2103-6. eCollection 2021.

Authors

Hale Gamze Ağalar¹, Mine Kürkçüoglu¹, Kemal Hüsnü Can Başer², Kenan Turgut³

Affiliations

¹ Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.
² Department of Pharmacognosy, Faculty of Pharmacy, Near East University, Lefkoşa, North Cyprus.
³ Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Turkey.

Abstract

This study was designed to reveal the chemical diversity of some Thymus sipyleus subspecies growing wild in Turkey and to compare the volatile compound profiles by using micro(hydro)distillation technique. For this purpose, volatile compounds isolated by microdistillation from nine samples (three plant samples collected from different regions in Antalya) of Thymus sipyleus Boiss. subsp. sipyleus var. sipyleus, T. sipyleus Boiss. subsp. sipyleus var. davisianus Ronniger, and T. sipyleus Boiss. subsp. rosulans (Borbas) Jalas were analyzed by GC and GC-MS systems. 1,8-Cineole, p-cymene, α-terpineol and carvacrol were identified as major compounds in T. sipyleus subsp. sipyleus var. sipyleus samples. Geranial, neral, 1,8-cineole and β-caryophyllene, and α-terpineol and geranial were the main compounds in T. sipyleus subsp. sipyleus var. davisianus samples. β-Caryophyllene, intermedeol, 1,8-cineole and α-terpineol, α-pinene were the major compounds in T. sipyleus subsp. rosulans samples. As known, thymol is the main compound in most Thymus species in Turkey, but, according to our study, chemical polymorphism has been found among the T. sipyleus subspecies.

Keywords: GC and GC-MS analysis; T. sipyleus subsp. rosulans; T. sipyleus subsp. sipyleus var. davisianus; Thymus sipyleus subsp. sipyleus var. sipyleus; chemical polymorphism; microdistillation; terpenes.