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UHPLC-DAD chromatogram of the polyphenol extract of pomegranate peel powder ((a) Beni Mellal, (c) Settat, (e) Berkane) and pomegranate seed powder ((b) Beni Mellal, (d) Settat, (f) Berkane). Phenolic compounds were detected at 280 nm; the peaks were assigned to (1) gallic acid, (2) α-punicalagin, (3) β-punicalagin, and (4) ellagic acid.
