The Flower Essential Oil of Dalea mutisii Kunth (Fabaceae) from Ecuador: Chemical, Enantioselective, and Olfactometric Analyses
In: Plants, Jg. 9 (2020-10-01), Heft 1403
Online
unknown
Zugriff:
An essential oil was distilled with 0.25% yield from fresh flowers of Dalea mutisii Kunth, a native species mainly growing in the Andean region of Ecuador. A total of 50 compounds were identified, and most of them were quantified. The chemical composition was characterized by the prevalence of monoterpene hydrocarbons (>
90%). Major components were &alpha
pinene (42.9%), &beta
pinene (15.1%), &beta
phellandrene (12.6%), myrcene (6.7%), and (Z)-&beta
ocimene (5.4%). The essential oil was then submitted to enantioselective analysis, with a 2,3-diethyl-6-tert-butyldimethylsilyl-&beta
cyclodextrin-based capillary column. An enantiomeric excess was measured for (1R,5R)-(+)-&alpha
pinene (91.6%), (1R,5R)-(+)-&beta
pinene (15.2%), (R)-(&minus
)-&alpha
phellandrene (4.8%), and (R)-(&minus
)-&beta
phellandrene (88.8%), whereas (R)-(+)-limonene was enantiomerically pure. A gas chromatography&ndash
olfactometry (GC&ndash
O) analysis was additionally carried out on this pleasantly fragrant essential oil, following an aroma extract dilution analysis (AEDA) approach. Main odorants were &alpha
pinene, &beta
pinene, &alpha
phellandrene, and (Z)-&beta
ocimene, with dilution factors (FD) of 8, 4, 2, and 2, respectively.
| Titel: |
The Flower Essential Oil of Dalea mutisii Kunth (Fabaceae) from Ecuador: Chemical, Enantioselective, and Olfactometric Analyses
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| Autor/in / Beteiligte Person: | Ortiz, Mariana ; Gilardoni, Gianluca ; José Vinicio Montesinos ; Montalván, Mayra ; Vinueza, Diego |
| Link: | |
| Zeitschrift: | Plants, Jg. 9 (2020-10-01), Heft 1403 |
| Veröffentlichung: | MDPI AG, 2020 |
| Medientyp: | unknown |
| ISSN: | 2223-7747 (print) |
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