It is widely accepted that oak tannins can have a very significant influence on the tannic structure of wines. Besides their influence on mouthfeel, oak tannins are also antioxidants, and are viewed with renewed interest for their protective effect against wine oxidation. This hasn’t always been the case.  Measuring tannins contributed by oak barrels (or barrel alternatives) is a challenging task. Analysis methods have consistently failed to adequately measure these compounds in wines, preventing both researchers and winemakers from fully understanding and assessing their impact. Why Do Oak Tannins Seem to Disappear in Wine? Oak tannins are ellagitannins, relatively complex molecules containing ellagic acid as a main building block. Ellagitannins belong to a class of tannins known as hydrolysable, due to the fact that they easily degrade in acidic aqueous solutions, like wine. Degradation by oxidation is also a cause of their decline in wine. For a long time, it could be ar

Are you blending wine and need help improving the final product? Oak Wise has an extensive product line of aqueous oak tannins that can be added to wine up to 48 hours before bottling. To receive samples of NATAN call our office at (209) 224-5353 or Mel Coronado at (209) 200-1438.For full product range visit: Natural Aqueous Tannins | Oak Wise (oak-wise.com) 

Oak Solutions Group is pleased to the announce the latest addition to its trÅ«/tan portfolio: f+ / Fermentation Plus. Fermentation Plus is a hydrolysable tannin that is a blend of gallotannin and ellagitannin derived from Quercus Alba. It adds subtle aromas and a smooth, round mouthfeel to heavier whites and lighter reds. “Our trÅ«/tan line originally contained two fermentation tannins, Fruit Intensive (fi) and Fermentation Finishing (f²), largely for whites and reds respectively,” said Kyle Sullivan, Global Managing Director for Oak Solutions Group.  “We discovered an opportunity to utilize a new toasted oak extract that provides more aromatics and desired mouthfeel not only to be used in both reds and whites at fermentation, but even to be used in finishing where applicable.” What makes trÅ«/tan unique is our oak, directly sourced from the same forest regions as premium oak barrels, and then precisely toasted through our proprietary process. This all