Abstract
The essential oil compounds of 274 individual plants belonging to 13 populations of Origanum vulgare L. (Lamiaceae) from Corsica were studied by GC/FID and GC/MS. On the basis of their monoterpene chemistry three different chemotypes were obvious in the Origanum populations: The first and most common type was a ‘cymyl’ type, with either carvacrol (0.6–65.5%) or thymol (0.0–49.5%) as the main compound. The second, which was very rare, was a ‘sabinyl’ type with sabinene (7.8–20.2%) and cis-sabinene hydrate (0.7–24.8%) as main compounds. The third type was a ‘mixed’ type combining compounds of the ‘cymyl’ and the ‘sabinyl’ pathway. The ‘mixed’ type was rich in cis-sabinene hydrate (0.0–52.4%) and γ-terpinene (0.6–35.4%).
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