Polyphenol: Chemical compounds found in plant life. In grapes, polyphenols are responsible for skin pigment, tannins and flavors—all of which fall under the category of flavonoids—as well as resveratrol, the compound associated with many of wine's health benefits, and which falls under the much smaller polyphenol category of non-flavonoids. Pertaining to wine, grape skins, seeds and stems contain the highest concentrations of polyphenols.

多酚：在植物中发现的化学成分。多酚包括多种物质，如属于黄酮类物质的葡萄皮色素，单宁和风味物质；属于更小的非黄酮类物质的多酚白藜芦醇，它们都与葡萄酒的许多健康益处相关。对葡萄酒而言，葡萄皮，葡萄籽和果梗中多酚的含量最高。