Influence of fruit biotypes on the chemical composition and antifungal activity of the essential oils of Eugenia uniflora leaves
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Data
2010-02
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Resumo
The multivariate chemical analysis of essential oils of Eugenia uniflora leaves with different
fruit colours indicated the presence of three oil clusters regarding sample biotypes. The first
cluster included yellowish, dark red and purple fruits with high percentages of germacrene B
(11.1-30.7%), germacrone (9.8-54%) and atractylone (0-19.9%). In cluster II, with bright red
fruit samples, the major constituents were curzerene (42.0-43.2%), germacrene D (8.7-9.0%) and
germacrene A (5.9-8.9%), whereas cluster III included red-orange fruit samples containing high
contents of selina-1,3,7(11)-trien-8-one (40.3-55.4%) and selina-1,3,7(11)-trien-8-one epoxide
(12.7-24.4%). The clustered oils were investigated against the systemic fungus Paracoccidioides
brasiliensis via the broth macrodilution method. The oil from cluster II revealed the most
significant result. The yeast form of P. brasiliensis was completely inhibited at a concentration
of 62.5 mg mL-1.
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Eugenia uniflora, Essential oil, Chemical variability, Antifungal activity, Paracoccidioides brasiliensis
Citação
COSTA, Deomar P. da et al. Influence of fruit biotypes on the chemical composition and antifungal activity of the essential oils of Eugenia uniflora leaves. Journal of the Brazilian Chemical Society, Campinas, v. 21, n. 5, p. 851-858, Feb. 2010.