英语语法分析

Catechin is a phenol antioxidant found in grape seeds.

葡萄籽中含有的儿茶素是一种酚类抗氧化剂。

After six months, catechin levels were 32 percent lower.

储存6个月后，儿茶素含量比实验开始时减少了32%。

Results and Conclusion Naringin, hesperidin and catechin sulfate were produced.

结果和结论有柚皮甙、橙皮甙和儿茶素硫酸酯的生成。