Tannins

Tannins are a group of organic compounds that are obtained from plants and animal tissues. They have the ability to bind metal ions such as iron and copper, making them useful in various industries.

Tannins are widely used in the textile industry for dyeing and tanning leather. They are also used in the production of paper, inks, paints, pharmaceuticals and cosmetics.

There are many types of tannins, including gallic acid, tannins, tannin, etc. They can be obtained from various sources such as plants, animals and minerals.

One of the most well-known sources of tannins are plants from the legume family. For example, oak bark contains high amounts of tannin, which is used to tan leather and make ink.

Tannins can also be obtained from animal tissues such as skin and bones. For example, shark skin contains a lot of tannin, which is an effective defense against bacteria and fungi.

In general, tannins play an important role in various industries and have a wide range of applications.

Tannins, or tannins, are a group of chemicals that have tanning properties and can bind free water in plant fibers, especially the skins of beets and stone fruits (as well as plant seeds such as flaxseeds). In the human body, they are deposited mainly in the walls of blood vessels. Blueberries and currants are rich in tannins.

The total amount of tannins in nature is small and amounts to approximately 400 g/t. The total supply of tanning plants is small, but they can provide a significant portion of the world's tanning material production due to their availability and moderate cost of production. The most important plants are members of the legume family. Many plants also contain tanning material, although it may be of lower quality, including plants in the verbena family, legumes, and even root vegetables such as beets. Wood processing of such plants is done to produce products such as tanned leather and many more.