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Title: Total polyphenol content in food samples and nutraceuticals: antioxidant indices versus high performance liquid chromatography
Author: Vidal-Casanella, Oscar
Moreno-Merchan, J.
Granados i Juan, Mercè
Núñez Burcio, Oscar
Saurina, Javier
Sentellas, Sonia
Keywords: Cromatografia de líquids d'alta resolució
Aliments funcionals
High performance liquid chromatography
Functional foods
Issue Date: 7-Feb-2022
Publisher: MDPI
Abstract: The total content of polyphenols and the antioxidant capacity have been estimated in various food and nutraceutical samples including cranberry, raspberry, artichoke, grapevine, green tea, coffee, turmeric, and other medicinal plant extracts. Samples have been analyzed by using two antioxidant assays ¿ferric reducing antioxidant power (FRAP) and Folin-Ciocalteu (FC)¿ and reversed-phase high-performance liquid chromatography (HPLC) focused on providing compositional fingerprints dealing with polyphenolic compounds. A preliminary data exploration by Principal Component Analysis (PCA) has revealed that HPLC fingerprints are suitable chemical descriptors to classify the analyzed samples according to their nature. Besides, chromatographic data have been correlated with antioxidant data using partial least squares (PLS) regression. Regression models have shown a good prediction capacity to estimate the antioxidant activity from chromatographic data, with determination coefficients (R2) of 0.971 and 0.983 for FRAP and FC assays, respectively.
Note: Reproducció del document publicat a:
It is part of: Antioxidants, 2022, vol. 11, num. 2, p. 324
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ISSN: 2076-3921
Appears in Collections:Articles publicats en revistes (Institut de Recerca en Nutrició i Seguretat Alimentària (INSA·UB))
Articles publicats en revistes (Enginyeria Química i Química Analítica)

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