Volatile constituents of the leaves of Cupressus dupreziana and Cupressus sempervirens

Composition of Volatile Foliage Isolates fromCupressus sempervirensVarieties (Var.horizontalMill. andpyramidalisNyman) Growing in Turkey

“…His chromatograms, where certain main compounds were numbered and identified by comparing their retention times with those of authentic compounds, indicate that α−pinene and δ−3-carene were most abundant. Our study and those of many others agree that independent from country and environment almost all Italian cypress trees contain both compounds abundantly, with more α−pinene than δ−3-carene (10,11,13,16). The following main compounds were also common, although in different percentages due to different ecological and climatic conditions: β−pinene, myrcene, limonene, terpinolene, α−terpineol, α−terpinyl acetate and α−cedrol.…”

“…Pauly et al (13) investigated volatile constituents of the leaves of C. dupreziana and C. sempervirens and found no significant differences between these taxa. The composition of the hydrocarbon fraction of the oils analyzed by Pauly et al (13) can be considered to be in agreement with our results, although somewhat higher percentages of α−pinene (around 73 %) were found by Pauly et al The higher oil yield (0.7 % vs. 0.4% on average) obtained from C. sempervirens leaves with higher percentages of α−pinene can be explained that Pauly et al (13) used ground fresh leaves whereas in the present work the grinding of fresh branchlets was omitted for simplicity.…”

“…The composition of the hydrocarbon fraction of the oils analyzed by Pauly et al (13) can be considered to be in agreement with our results, although somewhat higher percentages of α−pinene (around 73 %) were found by Pauly et al The higher oil yield (0.7 % vs. 0.4% on average) obtained from C. sempervirens leaves with higher percentages of α−pinene can be explained that Pauly et al (13) used ground fresh leaves whereas in the present work the grinding of fresh branchlets was omitted for simplicity. Sample preparation influences significantly both the yield and composition of the oil as demonstrated by Hachey et al (14) in case of needles and twigs of black spruce.…”

Essential Oil Variability in Natural Hahadjerine Population of Cupressus dupreziana in Tassili Ajjer (Algeria)

“…Phytochemical investigations of C. dupreziana have been carried by [3][4][5][6][7]. The study on seven French cultivars of Cupressus gives an interesting essential oil composition including α-pinene, Δ 3 -carene, sabinene, limonene and α-cadinol [8].…”

Monoterpenoids

“…344 The aubergine (Solanum melongena) contains ( +)-car-3-ene (126) amongst its aroma volatiles. 345 …”