Artemisia magellanica. Chemical Composition of the Essential Oil from an Unexplored Endemic Species of Patagonia

Abstract

The essential oil composition of the aerial parts of Artemisia magellanica Sch. Bip. (Asteraceae), native to Patagonia, was analyzed by GC‐FID‐MS. This is the first report on the essential oil composition of A. magellanica. A total of 113 components were identified accounting for 95.6–95.7 % of the oil. The essential oil was characterized by a high percentage of γ‐costol (21.0–43.5 %), selina‐4,11‐diene, (Z)‐β‐ocimene, (E)‐β‐farnesene, (Z)‐en‐yn‐dicycloether and 23 different esters (28.7 %). In turn, Artemisia biennis, a species native to North America, which is considered by some authors to be conspecific with A. magellanica, yielded an essential oil that was rich in (Z)‐β‐ocimene (34.7 %), (E)‐β‐farnesene (40.0 %) and the acetylenes (Z)‐ and (E)‐en‐yn‐dicycloethers (11.0 %). Thus, as A. biennis lacks the three main components present in A. magellanica, namely γ‐costol, 2‐methylbutyl 2‐methylbutyrate and selina‐4,11‐diene, these compounds could be considered as potential chemical markers for A. magellanica since they are absent or only found as minor constituents in other members of the genus. The data presented herein is also useful for genus taxonomy.

GC-FID-MS and X-ray Diffraction for the Detailed Evaluation of the Volatiles From Senecio filaginoides

“…A gas chromatography flame ionization detection mass spectrometry (GC-FID-MS) with a special system configuration was used, which provided 3 identification parameters from a single GC run 13 : linear retention indices (LRIs) in the polar and the nonpolar columns, as well as the mass spectrum of each compound. All experimental data were compared with those found in commercial libraries, 14,15 in the literature, [16][17][18][19][20] or with those of our own laboratory-developed mass spectra library built-up from constituents of known oils.…”

“…Compound identification was done comparing the LRI relative to C 8 -C 24 nalkanes, obtained in both columns, with those of reference compounds and from the literature. [16][17][18][19][20] Additionally, each experimental MS was compared with those from commercial libraries 14,15 and from our own data basis. The percentage composition of the essential oil components was calculated by peak area normalization of FID responses without considering corrections for response factors.…”

Chemical Composition, Antimicrobial Activity, and Mode of Action of Essential Oils against Paenibacillus larvae, Etiological Agent of American Foulbrood on Apis mellifera

“…Another four chemical types were yet reported for A . seriphioides EOs from Patagonia (Argentina) with the main compounds as follows: i ) p ‐cymene, γ ‐terpinene, and thymol (no data available of the recollection); (recollected from aerial parts on February), ii ) thymol, ortho ‐cimene, carvacrol, and terpinene (recollected from epigean parts), iii ) α ‐pinene, p ‐cymene, limonene, myrtenol, and carvone (no data available of the recollection), and iv ) carvacrol and thymol (no data available of the recollection) …”

Asociación espacial de Nothofagus antarctica y Berberis microphylla: mecanismos de facilitación sobre la regeneración arbórea en sistemas silvopastoriles

“…La madera del ñire se utiliza para producir cercas y como leña para los establecimientos ganaderos locales. Sus hojas son cada vez más utilizadas para producir licores, infusiones y cosméticos debido al contenido de aceites esenciales que le otorgan un aroma característico (González et al, 2016;Salinas y Uribe, 2021).…”