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
rat studies
3,4-Dihydroxyphenylacetic acid Not applicable 0.1 % of diet 5 days 5 2.25 µmol after 5 days GONTHIER 2003_02
3-Hydroxyphenylacetic acid Not applicable 0.1 % of diet 5 days 5 0.55 µmol after 5 days GONTHIER 2003_02
3-Hydroxyphenylpropionic acid Not applicable 0.1 % of diet 5 days 5 2.25 µmol after 5 days GONTHIER 2003_02
4-Hydroxybenzoic acid Not applicable 0.1 % of diet 5 days 5 1.45 µmol after 5 days GONTHIER 2003_02
4-Hydroxyhippuric acid Not applicable 0.1 % of diet 5 days 5 0.55 µmol after 5 days GONTHIER 2003_02
5-p-Coumaroylquinic acid Not applicable 0.1 % of diet 5 days 5 0.13 µmol after 5 days GONTHIER 2003_02
Hippuric acid Not applicable 0.1 % of diet 5 days 5 25.5 µmol after 5 days GONTHIER 2003_02
m-Coumaric acid Not applicable 0.1 % of diet 5 days 5 0.11 µmol after 5 days GONTHIER 2003_02
p-Coumaric acid Not applicable 0.1 % of diet 5 days 5 0.1 µmol after 5 days GONTHIER 2003_02
Vanillic acid Not applicable 0.1 % of diet 5 days 5 3.05 µmol after 5 days GONTHIER 2003_02