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Title: Characterization of fruit products by capillary zone electrophoresis and liquid chromatography using the compositional profiles of polyphenols. Application to authentication of natural extracts
Author: Navarro Reig, Meritxell
Núñez Burcio, Oscar
Saurina, Javier
Hernández Cassou, Santiago
Puignou i Garcia, Lluís
Keywords: Polifenols
Electroforesi capil·lar
Cromatografia de líquids
Capillary electrophoresis
Liquid chromatography
Issue Date: 16-Jan-2014
Publisher: American Chemical Society, Books and Journals Division]
Abstract: Capillary zone electrophoresis (CZE) and high performance liquid chromatography (HPLC) were applied to the authentication of fruit products based on the compositional profiles of polyphenols. Various sample treatments were used to maximize the overall recovery of polyphenols or specific fractions, such as phenolic acids or anthocyanins. The resulting CZE and HPLC data were treated with Principal Component Analysis (PCA) showing that samples were mainly clustered according to the fruit of origin, with cranberry- and grape-based products clearly separated in groups. A possible adulterated cranberry extract was analyzed more deeply by high resolution mass spectrometry (HRMS) in order to identify the presence of A-type proanthocyanidins, which are characteristic and more abundant in cranberry-based products. In accordance with PCA interpretation, HRMS results indicated that the suspicious sample was not a cranberry-based product, allowing us to validate and demonstrate the suitability of both CZE- and HPLC-proposed methods for the characterization of fruit-based products.
Note: Versió postprint del document publicat a:
It is part of: Journal of Agricultural and Food Chemistry, 2014, vol. 62, num. 5, p. 1038-1046
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ISSN: 0021-8561
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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