Quercetin and fisetin enhanced the small intestine cellular uptake and plasma levels of epi -catechins in in vitro and in vivo models

This is the authors' abstract. We don't add key points for this paper.

The catechol-containing flavonoids quercetin and fisetin could positively affect the absorption of catechins due to their strong affinity for COMT, which can methylate and cause the excretion of catechins.