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Title: A Targeted Approach by High Resolution Mass Spectrometry to Reveal New Compounds in Raisins
Author: Escobar Avello, Danilo
Olmo-Cunillera, Alexandra
Lozano-Castellón, Julián
Marhuenda-Muñoz, María
Vallverdú i Queralt, Anna
Keywords: Fruita seca
Espectrometria de masses
Dried fruit
Mass spectrometry
Issue Date: 12-Mar-2020
Publisher: MDPI
Abstract: Raisins are dried grapes mostly obtained from cultivars of Vitis vinifera L. and are extensively consumed worldwide. They are rich in bioactive compounds such as polyphenols, which are associated with a broad range of health benefits. The aim of the present study was to compare the phenolic profiles of three di erent raisin varieties (Thompson seedless, Muscat, and sultanas). Total polyphenols (TPs) were evaluated by the Folin-Ciocalteu (F-C) assay and significant differences were observed among all raisin varieties. Furthermore, liquid chromatography coupled with electrospray ionization hybrid linear ion trap quadrupole-Orbitrap-mass spectrometry (LC/ESI-LTQ-Orbitrap-MS) was employed for the comprehensive identification of phenolic constituents. A total of 45 compounds were identified, including hydroxybenzoic and hydroxycinnamic acids, flavanoids, flavonoids, flavonols, flavones,and stilbenoids. The three varieties of raisins showed a similar phenolic profile, although the highest number of phenolic compounds was identified in Muscat raisins owing to the roanthocyanidins extracted from their seeds, while stilbenoids were not detected in the Thompson variety.
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It is part of: Molecules, 2020, vol. 25(6), num. 1281
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ISSN: 1420-3049
Appears in Collections:Articles publicats en revistes (Nutrició, Ciències de l'Alimentació i Gastronomia)

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