ellagitannin

Ellagitannin, the main tannin in oak, is an important factor influencing the quality of grape wine in oak barrel.

是橡木中的主,是影响橡木桶贮葡萄酒质量的重因素之一。

There are two groups of hydrolysable tannins: gallotannins and ellagitannins on the basis of structural characteristics.

根水解结构特性的差异，又将其分为棓和。