When wine is stored in barrels, the wood expands and contracts as temperatures change, imparting tannins, esters, and polymers into the liquid, influencing the final product. Species of oak ...

Ideally, this new tannin-tapping tree bark for the polyphenol ... working to bring awareness to the harm the species poses to Hawaii's ecosystems. "We see using the skins of invasive species ...

IN most cases the presence of tannin is immediately shown by all the ordinary reagents used by the botanist for its discovery. This does not happen sometimes, however; as, for instance ...

For the past 20 years, a minuscule, viridescent insect — the emerald ash borer — has been laying waste to ash trees. The ...