RT Journal Article SR Electronic T1 Gelatin and Polyvinylpyrrolidone Compared for Fining Red Wines JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 170 OP 173 DO 10.5344/ajev.1960.11.4.170 VO 11 IS 4 A1 C. S. Ough YR 1960 UL http://www.ajevonline.org/content/11/4/170.abstract AB In testing PVP and gelatin as fining agents for the removal of tannins and color, PVP removed slightly more tannin and considerably more color from red wines than gelatin used in the same amounts. Amounts of sediment are higher for PVP, but ease of filtration and effectiveness in slightly gassy wines offsets this disadvantage. Taste tests indicate that gelatin was the preferred fining agent for tannin removal with the Cabernet-type wines tested. Stability tests show slight difference between PVP and gelatin in favor of the gelatin.