Electrospray ionization mass spectrometry fingerprinting of extracts of the leaves of Arrabidaea chica

Journal of the Brazilian Chemical Society

Adriana L. Schiozer¹  Elaine C. Cabral²  Luiz A. F. De Godoy²  Francisco C. M. Chaves²  Ronei J. Poppi¹  José M. Riveros²  Marcos N. Eberlin²  Lauro E. S. Barata¹ 

[1] ,University of Campinas Institute of Chemistry Laboratory of Natural ProductsCampinas SP ,Brazil

关键词: Arrabidaea chica;    crajiru;    ESI-MS fingerprinting;    3-deoxyanthocyanidinins;    multivariate analysis;   

DOI  :  10.1590/S0103-50532012000300006

来源: SciELO

【 摘 要 】

Arrabidaea chica (crajiru) is an important Amazonian plant. Its extracts are used as red pigments, antimicrobial agents and astringents. Three different varieties of this species are cultivated in the Amazon region. In this work, direct infusions of A. chica extracts from these three varieties were analyzed via electrospray ionization mass spectrometry (ESI(+)-MS) fingerprinting. Derived data from the spectra were classified by using a multivariate method (PLS-DA, partial least squares-discriminant analysis). The direct method that is herein presented relies on extraction of dry, powdered leaves with acidified methanol/water solution with no further sample preparation. The resulting supernatants were analyzed by direct infusion ESI(+)-MS, which provides characteristic fingerprints of the sample composition. 3-Deoxyanthocyanidins are important substances in A. chica, their ions were used as markers in the PLS-DA data treatment. PLS-DA was able to differentiate the three varieties. ESI(+)-MS fingerprinting works as a simple and fast method to differentiate varieties of A. chica.

【 授权许可】

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