Urine Plasma  
Polyphenol metabolite Composition of the [polyphenol] source Doses
administered
Dose
duration
Total no. subjects Mean urinary excretion (%) Kinetic data Tmax (hours) Mean Cmax (µmol/L) Half life (hours) AUC (µmol/L·h) Kinetic data Reference
human studies
4-O-Methylgallic acid Food administered
18 g Single dose 9 15.7 µmol after 24 hours ITO 2005
Caffeic acid Food administered
18 g Single dose 9 0.7 µmol after 24 hours ITO 2005
Enterodiol Food administered
18 g Single dose 9 1 µmol after 24 hours ITO 2005
Enterolactone Food administered
18 g Single dose 9 6.7 µmol after 24 hours ITO 2005
Gallic acid Food administered
18 g Single dose 9 5.9 µmol after 24 hours ITO 2005
m-Coumaric acid Food administered
18 g Single dose 9 0.8 µmol after 24 hours ITO 2005
Naringenin Food administered
18 g Single dose 9 0.3 µmol after 24 hours ITO 2005