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HPLC chromatograms of (a) FRE (fermented rooibos extract) and (b) GRT (unfermented rooibos extract) at 288 and 350 nm (solid and dotted lines, respectively). Content values of compounds are expressed as g/100 g extract (1, PPAG (Z-2-(β-D-glucopyranosyloxy)-3-phenylpropenoic acid), 2, isoorientin; 3, orientin; 4, ASP (aspalathin); 5, quercetin-3-O-robinobioside; 6, vitexin; 7, hyperoside; 8, rutin; 9, isovitexin; 10, isoquercetrin; 11, luteolin-7-O-glucoside, and 12, nothofagin).
