Infraspecific variability in the essential oil composition of Lychnophora ericoides
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Data
2008-03
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Resumo
Variations in the composition of the leaf essential oils of wild Lychnophora ericoides, with and
without scent, which were grown in three sampling sites, were examined by GC-MS. Results were
submitted to principal component and cluster analysis which allowed for two groups of essential
oils to be distinguished with regard to scent: cluster I with specimens exhibiting an aromatic scent
and containing a high percentage of -bisabolol (34 23%) and o-cymene (8.4 6.9%); cluster II
with specimens without any scent and characterised by a high percentage of caryophyllene oxide
(11 9%) and -elemene (5.7 6.9%). The two types of oil coexist in all the populations under
study, although patterns of aromatic samples deriving from Caldas Novas’ State Park reveal chemical
differences in relation to the samples from Brasília’s National Park and Santo Antônio do
Descoberto. Such chemical variations clearly suggest, apart from a geographical influence, genetic
differences between individuals in the populations. The high content of -bisabolol supports the
folk medicinal use of arnica as anti-inflammatory.
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Lychnophora ericoides, Asteraceae, Essential oils, Chemical variability
Citação
LYRA, Cynthia C. G. V. et al. Infraspecific variability in the essential oil composition of Lychnophora ericoides. Journal of the Brazilian Chemical Society, Campinas, v. 19, n. 5, p. 842-848, Mar. 2008.