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The synthetically produced substance polyvinylpolypyrrolidone (also polyvidone or povidone) is a pulverulent carbon compound with high Adsorption capacity (Addition of gases or solutes) to turbidity. It is one of the synthetic resins (see also under resins ). In the beverage industry, such as beer, it is used to remove turbid matter. In winemaking PVPP becomes beautiful and stabilizing used. This binds and removes phenolic substances (tannins and dyes) and their oxidation products. It is much more specific than protein containing agents like gelatin or casein, Even with noticeable tannin reduction, the aroma is hardly or not attacked, but the wine becomes lighter and more supple. The oxidation ability of the wine is reduced, thereby stabilizing the color. PVPP will also be against the wine mistakes Hochfärbigkeit and horse sweat used. By filtration it can be largely removed again.

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