Polyphenols are important molecules in living organisms, particularly in plants, where they serve as protectants against predators. They are also of fundamental importance in pharmacology for their antioxidant and antibacterial activities. Since a few years polyphenols are also used in surface functionalization mimicking the tannin deposition observed when tea or red wine are in contact with the surface of cups or glasses respectively. The interaction of polyphenols with proteins to yield colloids and of polyphenol with surfaces will be reviewed in this article to provide an overview of such particles and surface functionalization methods in modern surface science. Particular emphasis will be given to biological applications of polyphenols at interfaces.

多酚是活有机体（尤其是植物）中的重要分子，在植物中它们可作为防止天敌的保护剂。由于其抗氧化和抗菌活性，它们在药理学中也至关重要。几年来，多酚还被用于表面官能化，以模仿茶或红酒分别与杯子或玻璃杯表面接触时单宁的沉积。本文将综述多酚与蛋白质的相互作用以产生胶体，以及多酚与表面的相互作用，以概述此类颗粒以及现代表面科学中的表面功能化方法。将特别强调界面上多酚的生物应用。