Jeff Branco
San Francisco, CA

Winery Equipment Testimonial

Ryan and I worked together at Justin Winery for five years and have known each other for ten. While at Justin, Ryan was passionately interested in the wine making process, could fix about anything and was totally dedicated to making the winery a success. He has taken that dedication to Vintner Vault and became a major player in the winery supply business in just a few years. Jeff Branco, former VP and Winemaker Justin Winery

Home > Wine Chemicals > Tannins, Enzymes & Gums > Tannin, VR Grape (Biotan) - 500g

Tannin, VR Grape (Biotan)  500g

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Tannin, VR Grape (Biotan) - 500g
Proanthocyanidic tannins extracted from grapes.Thanks to the high quality of its extraction,


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Tannin VR Grape (Biotan)
Proanthocyanidic tannins extracted from grapes. Thanks to the high quality of its extraction, BIOTAN® contains only a negligible quantity of phenolic acids, which are known Brettanomyces substrates.

BIOTAN® allows:

  • Compensation for natural grape tannin deficiency.
  • Stabilization of color due to the formation of tannin-anthocyanin polymeric pigments.
 Tannin for Maturation & Aging
Instant Dissolving Process
Proanthocyaninidic tannins from Grapes
Dosage: 0.8 to 3.2 lbs per 1000 gal

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