葡萄籽中含有的儿茶素是一种酚类抗氧化剂。

Catechin is a phenol antioxidant found in grape seeds.

youdao

新鲜茶叶中的四种主要的多酚类物质为儿茶素，epigallocatechin(?) ，epicatecin gallate(?)

The four primary polyphenols found in fresh tealeaves are epigallocatechin gallate (EGCG), epigallocatechin, epicatechin gallate, and epicatechin.

youdao

表儿茶素：是一类具有抗氧化特性的低聚原花青素前体，存在于绿茶、葡萄酒、苹果、梨和巧克力中。

Epicatechins precursors of oligomer IC procyanidins with antioxidant properties. found in green tea wine apples pears and chocolate.

youdao