Abstract
Constituents of the volatile oil of Origanum vulgare ssp. viride growing wild in Kodjour (N. Iran) were studied using TLC, GC, GC/MS, and 1H-NMR methods. The oil was composed of monoterpenes and sesquiterpenes. The main components
of the monoterpene fraction were linalyl acetate, sabinene, γ-terpinene, trans-ocimene, and cis-ocimene. Low percentages of the phenolic monoterpenoids (thymol and carvacrol) were
detected in the oil. The percentage of the identified sesquiterpenoid components was
relatively high (44%). The main components of this fraction were β-caryophyllene,
caryophyllene oxide, germacrene D, and γ-elemene.