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Fining treatment is an important step in winemaking but its mechanism is still not well known. To have a better understanding of the protein fining process, the influence of polysaccharides and glycerol, major compounds in wine, on proanthocyanidin precipitation was studied. A wine and a model wine obtained from its polyphenol fraction were analyzed before and after fining by a gelatin and a plant...
Astringency elicited by tannins is usually assessed by tasting. Alternative methods involving tannin precipitation have been proposed, but they remain time-consuming. Our goal was to propose a faster method and investigate the links between wine composition and astringency. Red wines covering a wide range of astringency intensities, assessed by sensory analysis, were selected. Prediction models based...
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