Part of quercetin absorbed in the small intestine is conjugated and further secreted in the intestinal lumen

Research was conducted to examine the rutin and quercetin absorption and metabolism in rats after in situ perfusion of jejunum plus ileum. it was observed that a high proportion of quercetin disappeared during perfusion in comparison to rutin which reflects an extensive transfer into the intestinal wall. Results provide evidence that a rapid quercetin absorption in the small intestine is very effective along with its active conjugation in intestinal cells.