Comparison of the Essential Oil Composition ofStachys trinervisAitch. & Hemsl. andStachys subaphyllaRech. F

Abstract

The essential oils obtained from the aerial parts of Stachys trinervis Aitch. & Hemsl. and Stachys subaphylla Rech. F. were analysed by using GC and GC-MS. Sixteen compounds representing 95.43 % of S. trinervis oil were identified. The main ones were α-pinene (42.68 %), δ-2-carene (31.90 %), 1,8-cineole (7.03 %), limonene (4.39 %) and (Z)-β-ocimene (4.21 %). Twenty three components accounting for 97.62 % of S. subaphylla oil were identified. The major constituents were δ-2-carene (23.93 %), α-pinene (19.29 %), sabinene (19.11 %), δ-3-carene (9.22 %) and (Z)-βocimene (5.90 %). Both oils were rich in monoterpene hydrocarbons, especially α-pinene and δ-2carene.