Different physicochemical interactions between varietal wines and human saliva: Correspondence with astringency.

Autor: López-Solís R; Program of Cellular and Molecular Biology, Faculty of Medicine-ICBM, University of Chile, Independencia 1027, Santiago, Chile., Cortés-Araya K; Department of Agro-Industry and Enology, Faculty of Agronomical Sciences,University of Chile, P.O. Box 1004, Santiago, Chile., Medel-Marabolí M; Department of Agro-Industry and Enology, Faculty of Agronomical Sciences,University of Chile, P.O. Box 1004, Santiago, Chile., Obreque-Slier E; Department of Agro-Industry and Enology, Faculty of Agronomical Sciences,University of Chile, P.O. Box 1004, Santiago, Chile. Electronic address: eobreque@uchile.cl.
Jazyk: angličtina
Zdroj: Food research international (Ottawa, Ont.) [Food Res Int] 2024 Feb; Vol. 178, pp. 113964. Date of Electronic Publication: 2024 Jan 04.
DOI: 10.1016/j.foodres.2024.113964
Abstrakt: Astringency corresponds to the sensation of dryness and roughness that is experienced in the oral cavity in association with the interaction between salivary proteins and food polyphenols. In this study, the phenolic composition of seven varietal wines, the intensity of astringency they evoke and the physicochemical reactivity of these wines with whole human saliva were evaluated. Phenolic composition of wines was characterized by spectrophotometry and HPLC chromatography. Intensity of astringency was evaluated by trained sensory panels. Saliva from a single volunteer subject was used to assess wine-saliva interactions. To this end, binary mixtures were produced at different v/v wine/saliva ratios and each of them assayed for the ability of the salivary protein to diffuse on a cellulose membrane (diffusion test) and to remain in solution (precipitation test). Physicochemical reactivities between wine components and the protein fraction of saliva were contrasted against the astringency and the phenolic profile of each varietal wine. The study supports the view that astringency depends on physicochemical interactions between two complex matrices -wine and saliva- and not between some of their particular components.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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