Effect of low molecular weight phenols on the in-mouth sensory perception of high molecular weight phenols by analyzing reconstituted wines
2025
Gonzalo-Diago, Ana | Dizy, Marta | Fernández-Zurbano, Purificación | Ministerio de Ciencia e Innovación (España) | Ministerio de Economía y Competitividad (España) | Universidad de La Rioja | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
This research aimed to assess the contribution of monomeric phenols to the perception of bitterness and astringency by means of wine reconstitution experiments. Six wines with distinct total polyphenol indexes were selected and fractioned by preparative liquid chromatography into two fractions. Thirty-one reconstituted wines were prepared by combining distinct low molecular weight fractions (L) with different high molecular weight fractions (H). In-mouth attributes of reconstituted and reference wines were described by a trained sensory panel. Fractions were chemically characterized by UPLC-MS. No significant differences among sensory results were found between reference and reconstituted wines. Bitterness and astringency perception were strongly influenced by total proanthocyanidins content. Flavan-3-ol monomers and dimers were only responsible for astringency in wines with a low content of proanthocyanidins, as was the case in rosé wine. Quercetin-3-O-glucuronide and several anthocyanins presented correlations with bitterness in the reconstituted wines; notwithstanding, several interactions with this attribute were observed.
Show more [+] Less [-]This work was supported by the Spanish Ministry of Science and Innovation (AGL2010–22355-C02–02) and Ministry of Economy and Competitiveness (AGL2014–59840-C2–2-R FEDER, EU). The University of La Rioja granted A.G.D. with a Predoctoral Research Fellowship (FPI-UR-08/16610561F).
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