Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids.

Dec 23, 2025 · Tannin, any of a group of phenolic compounds in woody flowering plants that are important deterrents to herbivores and that have a number of industrial applications. Tannins …

Tannins, a diverse class of polyphenolic compounds, are widely present in a variety of plant-based foods and beverages, where they contribute significantly to flavor, astringency, and …

Tannins are complex chemical substances derived from phenolic acids (sometimes called tannic acid). They are classified as phenolic compounds, which are found in many species of plants, …

Aug 27, 2024 · What are tannins? Tannins are a type of bitter and astringent chemical compound that belongs to a larger group called polyphenols. They occur abundantly in nature, namely in …

Tannins are water-soluble polyphenolic compounds. They come in two main types: hydrolyzable tannins and condensed tannins. Hydrolyzable tannins break down in water, while condensed …

Tannins are naturally occurring phenolic compounds found in many kinds of plants, including a grape’s skins, stems, and seeds. Tannins help provide texture, balance, and structure to wine. …

A type of chemical found in plants and in certain foods, such as fruits, vegetables, nuts, wine, and tea. Tannins have antioxidant properties and may promote good health.

Jun 1, 2025 · Tannins are the secondary phenolic compounds of plants. Tannins exhibit a high level of biological activity. The phenolic structure of tannins has the potential for food, …

Although tannin biosynthesis pathways are not all fully verified, it is commonly accepted that tannins are divided into three main groups: hydrolysable tannins, proanthocyanidins (syn. …