RESUMO
The volatile constituents of the essential oil of Valeriana alliariifolia Adams growing wild in Kurdistan, Iran were investigated by the GC and GC/MS techniques. Among the 26 compounds represented, 20 (96.3%) of them were identified as oil. The main components were: trans-caryophyllene (38.96%), beta-pinene (12.06%), alpha-pinene (9.94%), alpha-terpinene (9.49%), isoterpinolene (7.15%), 1,8-cineole (6.76%), 1-borneol (3.27%) and calarene (2.26%). Some of the physicochemical properties, such as the logarithm of calculated octanol-water partitioning coefficients (log K(ow)), total biodegradation (TB(d) in mol h(-1) and g h(-1)), water solubility (S(w), mg L(-1) per 25 degrees C) and median lethal concentration 50 (LC(50)) were calculated for the components 1-20 of V. alliariifolia Adams.