grape tannins

Oenological tannins - Grape tannins

Tannin of natural origin derived from the different parts of the grape.

Alvinesa Natural Ingredients is an expert in natural grape extracts. These grape extracts can be used for different applications in a variety of sectors, such as in the Food, Animal Feed and Nutraceutical.

But what would be more natural than using grape extracts for the Wine and Spirits industry?

In addition to natural tartaric acid, our R&D team has developed a range of excellent grape tannins for wine color stabilization and wine balance.

The sectors in which they are used


Taninos condensados

Proanthocyanidins: Condensed tannins

Proanthocyanidins are condensed tannins and tannins are natural polyphenols found in wine, coming from grape skin and grape seeds.

They are known for their beneficial properties, which influence the quality of the wine as well as the health of the consumer.

During the winemaking process, oenological tannins can be added to wine or must and, naturally, grape tannins appear to be the logical choice.

grape tannins

When do you add tannins to wine?

Actually, grape tannins can be naturally found in enough quantity in the grapes, so they do not need to be systematically added into wine. This will depend on the climate, the type of wine, the vintage and the goal of the winemaker.

Oenological grape tannins are especially recommended for under-ripe grapes or in the case of botrytis cinerea, which can infect mature or senescent plants prior to harvest, or seedlings.

They are used in several steps of the winemaking process: harvest, fining or ageing.

You can find grape tannins in extract powder and extract liquid. In Alvinesa, we manufacture both and collaborate with the leaders in oenological tannins´ formulation to make sure that these natural extracts will be used in the best way possible.

Aplicaciones de los taninos de uva

What are the main applications of grape tannins?

Commonly, grape tannins are used in red wine to facilitate stable pigment formation, stabilize wine color and improve its structure. In white and rosé wine, grape seed tannins reduce the quantity of unstable proteins. They help improve the overall wine balance.

Moreover, tannins can be used to enhance the natural antioxidant properties of all types of wine. That is why natural grape extracts, in general, are being increasingly used, for their multiple benefits, in different kinds of edible and drinkable products as well as in dietary supplements and even pharmaceutical compounds

Alvinesa I+D+I

The best grape extracts suppliers

What are our commitments, as a supplier of natural oenological tannins?

As a real manufacturer and supplier of natural grape extracts, Alvinesa uses 100% physical and water extraction processes and applies them on rigorously selected raw material. Thus, Alvinesa’s grape tannins keep their natural properties and the resultant powder can be perfectly and easily dissolved in wine.

Our R&D team is fully involved in the development of new grape natural extracts for Oenology. If you would like more information on grape seed, grape skin tannins or any other grape extracts, please, do not hesitate to contact us.

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