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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Chemical characterization of two morphologically related Espeletia (Asteraceae) species and chemometric analysis based on essential oil components

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Author(s):
Guillermo F. Padilla-González [1] ; Jennyfer A. Aldana [2] ; Fernando B. Da Costa [3]
Total Authors: 3
Affiliation:
[1] Universidade de São Paulo. Faculdade de Ciências Farmacêuticas. Laboratório de Farmacognosia - Brasil
[2] Universidade de São Paulo. Faculdade de Ciências Farmacêuticas. Laboratório de Farmacognosia - Brasil
[3] Universidade de São Paulo. Faculdade de Ciências Farmacêuticas. Laboratório de Farmacognosia - Brasil
Total Affiliations: 3
Document type: Journal article
Source: REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY; v. 26, n. 6, p. 694-700, 2016-12-00.
Abstract

ABSTRACT In this study, a comprehensive phytochemical characterization of two morphologically related species from the genus Espeletia Mutis ex Bonpl., namely, Espeletia grandiflora Humb. & Bonpl. and Espeletia killipii Cuatrec., Asteraceae, has been performed by gas chromatography coupled to flame ionization detection, gas chromatography coupled to mass spectrometry and ultra-high performance liquid chromatography coupled to ultraviolet and high-resolution mass spectrometry. Analysis of ethanol extracts (70%, v/v) from leaves and concomitant compound dereplication allowed the identification of major peaks, most of them new reports for the genus Espeletia or the subtribe Espeletiinae. Chemical characterization of resins essential oils indicated several similarities and differences between both species and from other members of the subtribe. Chemometric analysis (hierarchical clustering analysis and orthogonal partial least-squares discriminant analysis) applied to the essential oil composition of 31 species from Espeletiinae furthermore allowed the identification of three primary clusters correlated with the taxonomy. Hence, this study underscored qualitative and semiquantitative differences between the chemical composition of leaves and resins of E. grandiflora and E. killipii, provided information on chemotaxonomy and described the presence of different trends in the essential oil composition from species of Espeletiinae. (AU)

FAPESP's process: 14/17702-0 - Metabolomics and evolution of chemical characters in the subtribe Espeletiinae (Asteraceae)
Grantee:Guillermo Federico Padilla Gonzalez
Support Opportunities: Scholarships in Brazil - Doctorate