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 0.2 µmol after 5 days GONTHIER 2003_02
3-Hydroxyphenylacetic acid Not applicable 0.1 % of diet 5 days 5 0.5 µmol after 5 days GONTHIER 2003_02
3-Hydroxyphenylpropionic acid Not applicable 0.1 % of diet 5 days 5 0.2 µmol after 5 days GONTHIER 2003_02
3-Hydroxyphenylvaleric acid Not applicable 0.1 % of diet 5 days 5 0.005 µmol after 5 days GONTHIER 2003_02
4-Hydroxybenzoic acid Not applicable 0.1 % of diet 5 days 5 1.5 µmol after 5 days GONTHIER 2003_02
4-Hydroxyhippuric acid Not applicable 0.1 % of diet 5 days 5 1.65 µmol after 5 days GONTHIER 2003_02
5-p-Coumaroylquinic acid Not applicable 0.1 % of diet 5 days 5 0.09 µmol after 5 days GONTHIER 2003_02
Hippuric acid Not applicable 0.1 % of diet 5 days 5 24.65 µmol after 5 days GONTHIER 2003_02
m-Coumaric acid Not applicable 0.1 % of diet 5 days 5 0.25 µmol after 5 days GONTHIER 2003_02
p-Coumaric acid Not applicable 0.1 % of diet 5 days 5 0.25 µmol after 5 days GONTHIER 2003_02
Vanillic acid Not applicable 0.1 % of diet 5 days 5 3.25 µmol after 5 days GONTHIER 2003_02