According to Coherent Market Insights "The global tannin market is expected to grow significantly during the forecast period. The increasing demand from the various end-use industries such as leather, wine, and wood adhesives is the major driving factor for the growth of the tannin market".
Have you ever had an astringent (dry, puckery) sensation in your mouth after biting into an unripe apple? You've had tannin before.
Tannins are chemical compounds made up of phenolic acids (sometimes called tannic acid). They're called phenolic compounds, and they're found in a wide range of plant species from all climates and places of the world. They're big molecules that bind to proteins, cellulose, carbohydrates, and minerals easily. These chemicals are insoluble and resistant to decomposition as a result of the process.
Tannin is found in a variety of coniferous tree species as well as blooming plant families. The tannins in the plants can leach out. The tannin-rich water in the soil seeps into the groundwater or drains into lakes and streams. These liquids get brown and have a tea-like appearance.
The word tannin is derived from the German word tanna, which means oak. It refers to the process of turning animal skins into leather using wood tannins generated from oak trees. Willows (Salix spp. ), quebracho (Scinopsis balansae), sumac (Rhus spp. ), maples (Acer spp. ), wattle (Acacia spp. ), eucalyptus (Eucalyptus spp. ), eucalyptus (Eucalyptus spp. ), eucalyptus spp (Rhizophora spp.).
Tanning is an ancient method that is thought to have originated in Egypt around 5000 B.C. Oak was used to tan animal skins into leather by the ancient Greeks and Romans. Tanning has been practised in China for thousands of years.
Different formulations of plant tannins referred to as "tanning liqueurs" were used to achieve different hues, textures, and durability of leathers.
Tannins are employed in photography, as mordants in dyeing, to clarify wine and beer by precipitating proteins, and as astringents in medicine, in addition to tanning leather.
Commercial tannins are amorphous solids that range in color from pale yellow to light brown and come in powder, flakes, or a spongy mass. They are mostly employed in the tanning of leather, dyeing of fabrics, and the production of ink, as well as in a variety of medical applications. Tannin solutions have an astringent flavor and are acidic. Tannins are what give black and green teas their astringency, colour, and some of their flavor.