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-Hydroxy-3-(3-hydroxyphenyl)propionic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
3-Hydroxyhippuric acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
3-Hydroxyphenylacetic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
3-Hydroxyphenylpropionic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
4-Hydroxybenzoic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
4-Hydroxyhippuric acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
4-Hydroxymandelic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
4-Hydroxyphenylacetic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
Hippuric acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
Homovanillic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
Phenylacetic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
Syringic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008
Vanillic acid Food administered
1 capsules/day 28 days 26 Detected (unquantified) GRUN 2008