Abstract

Society is very interested in the quality of food products, and lately in the presence of some specific compounds, such as polyphenols, with health beneficial properties. Polyphenols are aromatic secondary metabolites ubiquitously spread through the plant kingdom, and they caught the attention of consumers because of their antioxidant properties, their great abundance in our diet, and their probable role in the prevention of various diseases. However, nowadays there is a great concern about the possibility of frauds regarding the classification and authentication of, for instance, fruit processed products and pharmaceuticals. In this work, the determination of polyphenolic profiles by liquid chromatography-mass spectrometry (LC-MS) techniques was explored for the characterization and authentication of berry-based natural and pharmaceutical extracts. For that purpose, more than 100 samples including cranberry-, blueberry-, raspberry-, and grape-based extracts and cranberry-based pharmaceuticals were analyzed using different LC-MS techniques, and the polyphenolic profiles submitted to principal component analysis for sample classification and authentication. The score-plot results showed that polyphenolic data obtained by low resolution and high resolution mass spectrometry was very helpful in the classification and authentication of the analyzed samples, and several biomarkers were identified.

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