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Abstract
The compositions of volatile compounds released from the leaves and flowers of Artemisia austriaca Jacq. (Asteraceae) were investigated by headspace solid-phase microextraction (HS-SPME) coupled to Gas chromatography (GC) and/or Gas chromatography-Mass spectrometry (GC-MS). The extraction efficiency of the modified pencil lead was evaluated in comparison with two commercial fibres (PA, PDMS). Ultimately, the modified pencil lead was selected as a suitable fibre due to its low cost and high stability in high temperatures, simple preparation and acceptable extraction efficiency. 85oC and 75oC were chosen as the optimum extraction temperatures for flower and leaf samples, respectively. Based on the results, the nature and level of the volatile compounds were different in the leaves and flowers of the A. austriaca. Accordingly, 41 compounds were identified, among which 17 ones were exclusively found in the flower samples and 7 ones were identified just in the leaves samples.