Comparative study on essential oil of some Teucrium species from Cyprus.

A comparative study on the essential oil of Teucrium cyprium ssp. cyprium, T. micropodioides, T. divaricatum ssp. canescens and T. kotschyanum has been carried out. The four specimens are found in Cyprus and were used in the traditional medicine of the island. The first three are endemic to Cyprus. The essential oil was extracted by steam distillation of the dried flowers, leaves and stems and analyzed by GLC and GC-MS. The percentage of the essential oil obtained varies in the different parts of the plants from 0.07 to 1.3%. Forty-eight components have been identified. Some of them were present in all the species which have been investigated, others were characteristic of one species only.