Wine type

Red

Certifications

Vegan

Allergen Free

Gran Tannics

Ultra-pure oenological tannin with very high solubility, particularly suitable for protection and stabilization in red wines.
Technical sheet
Safety data sheet
Gran Tannics is an oenological preparation that combines tannins extracted from two main sources, Chestnut and Quebracho, and is known for its ability to protect and stabilize color in red wines, as well as having other positive organoleptic influences. Here are some of its key characteristics and functions:

  • Color stabilization: Gran Tannics is effective in maintaining color stability in red wines. Tannins in the preparation react with anthocyanins, the pigments responsible for color in red wines, to form stable complexes that prevent the gradual loss of color during fermentation and maceration. This is important for preserving the visual appearance of wines.
  • Protection from unripe or botrytized grapes: this preparation is especially useful when working with unripe or botrytized grapes. It can deactivate enzymes such as laccase and tyrosinase, which could otherwise cause oxidation problems and color loss in wines. In this way, it restores a balance with anthocyanins, helping to maintain color.
  • Improved structure: Gran Tannics can also be used in situations where maceration is short or where there is insufficient tannin extraction from the grapes. By adding Gran Tannics, the structure of the wine can be improved, bringing in the tannins needed to develop complexity and bouquet. This can result in spicy notes and more complex aromas in the finished wine.
  • Regulation of oxidation: Gran Tannics has the ability to react with oxygen, helping to regulate the oxidative power of wine. This helps protect wine from oxidation and may reduce the need to use sulfites for storage.

Blend of condensed (Quebracho) and gallo-ellagic (Chestnut) tannins.

10-30 g/hl in fermentation or at the end of fermentation for color stabilization
15-30 g/hl for laccase inhibition
Evaluate the correct dosage according to the health status and degree of ripeness of the grapes.

Dissolve the required amount of Gran Tannics in water or wine at a ratio of 1:10 to 1:15 under vigorous stirring and add it to the mass being reassembled.

1 kg bag, 12.5 kg bag.
Store in a cool, dry place, away from heat sources.
Avoid contact of the product in solution with iron vessels, especially if they are rusted: tannin forms an insoluble black precipitate that, although harmless, impairs functionality.

Gran Tannics is an oenological preparation that combines tannins extracted from two main sources, Chestnut and Quebracho, and is known for its ability to protect and stabilize color in red wines, as well as having other positive organoleptic influences. Here are some of its key characteristics and functions:

  • Color stabilization: Gran Tannics is effective in maintaining color stability in red wines. Tannins in the preparation react with anthocyanins, the pigments responsible for color in red wines, to form stable complexes that prevent the gradual loss of color during fermentation and maceration. This is important for preserving the visual appearance of wines.
  • Protection from unripe or botrytized grapes: this preparation is especially useful when working with unripe or botrytized grapes. It can deactivate enzymes such as laccase and tyrosinase, which could otherwise cause oxidation problems and color loss in wines. In this way, it restores a balance with anthocyanins, helping to maintain color.
  • Improved structure: Gran Tannics can also be used in situations where maceration is short or where there is insufficient tannin extraction from the grapes. By adding Gran Tannics, the structure of the wine can be improved, bringing in the tannins needed to develop complexity and bouquet. This can result in spicy notes and more complex aromas in the finished wine.
  • Regulation of oxidation: Gran Tannics has the ability to react with oxygen, helping to regulate the oxidative power of wine. This helps protect wine from oxidation and may reduce the need to use sulfites for storage.

Blend of condensed (Quebracho) and gallo-ellagic (Chestnut) tannins.

10-30 g/hl in fermentation or at the end of fermentation for color stabilization
15-30 g/hl for laccase inhibition
Evaluate the correct dosage according to the health status and degree of ripeness of the grapes.

Dissolve the required amount of Gran Tannics in water or wine at a ratio of 1:10 to 1:15 under vigorous stirring and add it to the mass being reassembled.

1 kg bag, 12.5 kg bag.
Store in a cool, dry place, away from heat sources.
Avoid contact of the product in solution with iron vessels, especially if they are rusted: tannin forms an insoluble black precipitate that, although harmless, impairs functionality.

Don't forget these alternatives:

Blooming

to achieve sufficient tannin extraction from the grapes

Show more
Gallatan

whether the grapes to be sent for vinification are botrytized or there is the presence of oxidase enzymes

Show more
Comparative essedielle powder tannins by end result

Antioxidant and antioxidase action

stabilization &
co-pigmentation

redox potential

structure & complexity

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