COMPARATIVE INVESTIGATION OF DOUGLAS-FIR HEADSPACE SAMPLES, ESSENTIALOILS, AND EXTRACTS (NEEDLES AND TWIGS) USING GC-FID AND GC-FTIR-MS

The headspace, the essential oil, and the petroleum ether extract of A ustrian Douglas fir [Pseudotsuga menziesii. (Mirb.) France] needles an d twigs were analyzed by GC-FID and GC-FTIR-MS. More than 60 compounds , mainly monoterpenes, were identified in the samples. The main consti tuents of the investigated samples were beta-pinene, sabinene [both do minate samples of needles (headspace, ca. 19%/22%; essential oil, ca. 13%/16%; extract, ca. 21%/23%) and twigs (headspace, ca. 20%/20%; esse ntial oil, ca. 20%/15%, extract, ca. 21%/20%)], terpinen-4-ol, alpha-p inene, delta-3-carene, limonene, terpinolene, alpha-terpineol, alpha-t erpinene, gamma-terpinene, and myrcene. In the essential oils, bornyl acetate and citronellyl acetate were also found. The odor of these sam ples has been characterized, and some attractive effects on animals (d eer and wild boar) are given.