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Chem Biodivers

Title:		Essential Oil Composition of Five Thymus Species from Bulgaria
Author(s):		Trendafilova A; Todorova M; Ivanova V; Zhelev P; Aneva I;
Address:		"Institute of Organic Chemistry with Center of Phytochemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria. University of Forestry, 1797, Sofia, Bulgaria. Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria"
Journal Title:		Chem Biodivers
Year:		2021
Volume:		20210915
Issue:		10
Page Number:		e2100498 -
DOI:		10.1002/cbdv.202100498
ISSN/ISBN:		1612-1880 (Electronic) 1612-1872 (Linking)
Abstract:		"In this study, the essential oil composition of five Thymus species, belonging to Sect. Hyphodromi (A. Kerner) Halacsy - Thymus atticus Celak., T. leucotrichus Halacsy, T. striatus Vahl, T. zygioides Griseb. and T. perinicus (Velen.) Jalas. was studied by GC/MS/FID. T. atticus, T. leucotrichus, and T. striatus were characterized by high amounts of sesquiterpenoids (57.7, 78.9 and 79.7 %, respectively) with beta-caryophyllene and caryophyllene oxide as the main constituents. Aromatic compounds (61.2 %) were the most abundant group in T. zygioides essential oil, with thymol (51.2 %) as the principal component. The essential oil from the endemic species T. perinicus contained almost equal amounts of monoterpenoids (37.8 %) and aromatic compounds (36.0 %) with borneol (17.9 %) and thymol (20.9 %) as the major components. The obtained results revealed the existence of new chemotypes of T. atticus (caryophyllene oxide/beta-caryophyllene), T. leucotrichus (beta-caryophyllene/elemol/germacrene D) and T. striatus (beta-caryophyllene/germacrene D/caryophyllene oxide). The essential oil content of endemic T. perinicus is reported for the first time. Principal component analysis (PCA) and cluster analysis (CA) were used to investigate the variations in the essential oils of different Thymus species from Sect. Hyphodromi (A. Kerner) Halacsy"
Keywords:		"Bulgaria Gas Chromatography-Mass Spectrometry Oils, Volatile/chemistry/*isolation & purification Principal Component Analysis Thymus Plant/*chemistry PCA and CA Sect.Hyphodromi Thymus species chemotypes essential oils;"
Notes:		"MedlineTrendafilova, Antoaneta Todorova, Milka Ivanova, Victoria Zhelev, Petar Aneva, Ina eng National Science Fund/ DN16/3/Ministry of Education and Science, Bulgaria/ Switzerland 2021/08/19 Chem Biodivers. 2021 Oct; 18(10):e2100498. doi: 10.1002/cbdv.202100498. Epub 2021 Sep 15"