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Chromatograms of gallic acid analysis. a A HPLC chromatogram of standard gallic acid (GA) showing single peak of gallic acid (arrow marked). b A HPLC chromatogram of pomegranate crude extract showing presence of gallic acid (arrow marked). c A HPLC chromatogram of pomegranate extract, spiked with standard gallic acid. Sample gallic acid and standard gallic acid co-eluted at the same retention time (arrow marked)
