ellagitannin

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

花单橡木中的主要单,响橡木桶贮葡萄酒质量的重要因素之一。

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

根水解单结构特性的差异，又将其分为棓单花单。