02199nas a2200145   4500008004100000245009600041210006900137260001200206300001400218490000700232520166700239100001401906700001501920856011801935       2007                        eng d00aVolatile components of Thymus vulgaris L. from wild-growing and cultivated plants in Jordan0 aVolatile components of Thymus vulgaris L from wildgrowing and cu  c2007///  a322 - 3270 v223 aThe composition of the essential oil hydrodistilled from the aerial parts of Thymus vulgaris L. grown in Jordan has been determined by GC and GC-MS. Variations in oil composition and yield between cultivated and wild-growing plants collected from different localities, at different altitudes, have been also evaluated. Higher oil yields were observed in plants growing wild (3.7-5.6% of dried material) than in cultivated plants (1.1-2.0%), and those collected from the Mshaqar region, in the middle of Jordan and at the highest altitude, were the richest in oil (similar to 5.4%). Generally, the oil was characterized by marked levels of phenolic monoterpenoids (mainly thymol and carvacrol) in the range 70.8-89.0%. High levels of the monoterpenoid hydrocarbons p-cymene (3.4-8.2%) and gamma-terpinene (1.6-7.7%) were also observed. Other major components were 1,8-cineole (up to 2.1%), alpha-thujone (up to 1.2%), camphor (up to 1.1%) and fl-caryophyllene (0.2-2.8%). With the exception of plants growing wild in the Ramtha region, in the far north of Jordan, carvacrol was found as the principal phenol of all other oils (50.6-86.1%) and was dominant (>85%) in wild plant oils. The oil from Ramtha was characterized by the highest level of thymol (similar to 63.8%) as the dominant phenol and was most abundant in p-eymene (8.2%), 1,8-cineole (2.1%) and gamma-terpinene (7.7%). In addition to assigning carvacrol or thymol chemotypes to the plant, the high content of active monoterpenoid phenols strongly suggests a potential use of Jordanian thyme oil in cough products and antimicrobial-herbal drug combinations. Copyright (C) 2007 John Wiley & Sons, Ltd.1 aHudaib, M1 aAburjai, T  uhttps://thymus.myspecies.info/ref/volatile-components-thymus-vulgaris-l-wild-growing-and-cultivated-plants-jordan