Figure 4.

(a) Plasma levels-time courses of the targeted metabolites detected. Values are means of nine volunteers with SD shown by vertical bars (1 and 2 correspond to two isomers of tyrosol sulfate); (b) Inter-individual variability in the content of the targeted metabolites observed in plasma 2 h after the consumption of the Fraxinus angustifolia Vahl extract. Differences between maximum and minimum values are indicated. All results are shown as relative peak areas (relative area = (peak area metabolite × 100/peak area internal standard)).