Urinary excretion kinetics of total and selected individual phenolic metabolites, illustrating metabolite excretion patterns over 90d (see text for details). a) Total phenolic excretion, b) 3-hydroxyphenyl propionic acid, c) quercetin, d) delphinidin glucuronide, and e) 3-hydroxy-4-methoxyphenylpropionic acid. Data shown as mean ± SEM. Statistical analysis for total phenolic excretion is given in Table 2, while graphs of all quantified individual phenolic metabolites and their statistical comparisons are given in the Supporting Information (Figures SI1–SI3).