Figure 1. Yields of major compounds given by HD and SD.Figure optionsDownload full-size imageDownload as PowerPoint slide
This investigation is different to those found in some AT9283 from Turkey (Perez-Alonso and Velasco-Negueruela, 1996) (25.2% borneol, 22.5% isobornyl acetate and 19.5% bornyl acetate), Spain (Camacho et al., 2000) (38.8% fokienol and 7.71% nerolidol) and France (Blanc et al., 2006) (21.1% fokienol, 8.6% nerolidol and 6.2% eudesm-6-en-4α-ol), but in accordance with the oil of Italy (De laurentis et al., 2002) (62.37% 12-Carboxyeudesma-3,11 (13) diene). Probably electron acceptor difference is caused by the ecological factors and genetic variations.
The results presented in this study are the first given informations on the chemical composition of essential oil from the Algerian I. viscosa leaves. It showed that oxygenated sesquiterpenes are the major fraction for the two extraction methods (46.7–72.98%), and the I. viscosa essential oil can be a good source of sesquiterpenes acids compounds.