Studies of Mediterranean oregano populations-V.Chemical composition of essential oils of oregano:Origanum syriacum L.var.bevanii(Holmes)letswaart,O.syriacum L.var.sinaicum(Boiss.)letswaart,and O.syriacum L.var.syriacum from Lebanon and Israel

摘要

Essential oils extracted by steam extraction were analysed by GC and GC-MS.Most of the populations corresponded to a carvacrol chemotype.We show in Origanum syriacum var.bevanii and O.syriacum var.syriacum the existence of thymol,thymol-carvacrol and carvacrol-thymol chemotypes not hitherto described in these species.