Development of a Rapid and Simple Method to Remove Polyphenols from Plant Extracts

Figure 3

HPLC chromatograms for (a) standard (8 μg/mL), (b) water extracts of tea flush 400 μg/mL, and (c) the third fraction of the tea extract (6.25 mg/mL) treated with PVPP. () Gallic acid, () internal standard: β-hydroxyethyl theophylline, () Caffeine, () EC, and () EGCG.

(a)

(b)

(c)