Fig. 5From: Authentication of milk thistle commercial products using UHPLC-QTOF-ESI + MS metabolomics and DNA metabarcodingComparative evaluation of silybins concentrations (mg silybins/g sample) in all herbal preparations, as determined by UV spectrometry and UHPLC-QTOF-ESI+MS analysis. For codes and abbreviations see Table 1 and Additional file 1.A. The error bars (± SD) from triplicate measurements represented 20–30% of the mean values represented in graphicBack to article page