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Title: Characterization, classification and authentication of fruit-based extracts by means of HPLC-UV chromatographic fingerprints, polyphenolic profiles and chemometric methods
Author: Pardo-Mates, Naiara
Vera, Alex
Barbosa, Sergio
Hidalgo-Serrano, Míriam
Núñez Burcio, Oscar
Saurina, Javier
Hernández Cassou, Santiago
Puignou i Garcia, Lluís
Keywords: Cromatografia de líquids d'alta resolució
High performance liquid chromatography
Issue Date: 15-Apr-2017
Publisher: Elsevier B.V.
Abstract: HPLC-UV was applied to the analysis and characterization of fruit-based and fruit-processed products. A Kinetex C18 reversed-phase column was proposed under gradient elution for the determination of 17 polyphenols. Acceptable sensitivity (LODs below 0.16 mg/L), and good linearity (r2 higher then 0.995), precision (RSD below 6.8%), and method trueness (relative errors below 11%) were obtained. Data corresponding to polyphenolic peak areas and HPLC-UV chromatographic fingerprints were then analyzed by exploratory principal component analysis (PCA) to extract information of the most significant variables contributing to characterization and classification of analyzed samples regarding the fruit of origin. HPLC-UV chromatographic data was further treated by partial least square (PLS) regression to determine the percentages of adulteration in cranberry-fruit extracts. It was found that even mixture samples containing low percentages of adulterants could be distinguished from genuine cranberry extracts. Highly satisfactory results were obtained, with overall errors in the quantification of adulterations below 4.3%.
Note: Versió postprint del document publicat a:
It is part of: Food Chemistry, 2017, vol. 221, p. 29-38
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ISSN: 0308-8146
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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