Abstract
The composition of the essential oils of seven populations of Thymus camphoratus from Portugal and their infraspecific variability were investigated by GC, GC-mass spectrometry and 13C NMR. The results obtained from GC analyses of the volatile oils from individual plants were submitted to Principal Component and Chemometric Cluster analyses. 1,8-Cineole, linalool, borneol, α-pinene, camphene, trans-sabinene hydrate, and terpinen-4-ol were the main constituents. 13 C NMR spectra of the essential oil, previously fractioned by column chromatography, let to the identification of two new oxygenated sesquiterpenes for the genus Thymus: intermedeol, which is reported for the first time in the Lamiaceae, and homalomenol-D. Multivariate analysis enabled four different groups of essential oils to be distinguished: (i) linalool, (ii) borneol, (iii) 1,8-cineole and (iv) 1,8-cineole/borneol. © 1997 Elsevier Science Ltd. All rights reserved
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
