Absorption and metabolism of dietary flavonoids in the digestive system

3 Absorption and metabolism of dietary flavonoids in the digestive system 

Bioavailability of dietary flavonoids is mostly dependent on the efficacy of intestinal absorption by epithelial cells in the small intestine and large intestine (Manach Donovan, 2004). Fig. 13.4 shows the general concept for the metabolic fate of flavonoids in the digestive system. The major site for intestinal absorption is believed to be the large 

Bioavailability of gallate-type tea catechins, that is, ECg and EGCg is much lower than that of quercetin and nongallate-type EC and EGC (Manach et al, 2005). EGCg and ECg may be barely absorbed into intestinal epithelial cells or readily excreted into the digestive 

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