f² /

 trū/tan f² is a blend of hydrolysable tannins composed of gallotannins and ellagitannins that has a total tannin range from 92% to 97%, making this product ideal for fermentation of red and white musts. It can protect fermentations of grapes infected with molds because it inhibits laccase activity. With this high tannin content, it will prevent oxidation protecting white wines from browning. It improves mouthfeel and texture in white wines and has subtle effects in red wines.