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Typical MRM chromatograms of ten polyphenols in (A) extracts and (B) standard solutions. Peak identification: 2: gallic acid; 4: methyl gallate; 6: EGCG; 11: myricetrin; 12: ECG; 13: myricetin; 14: astragalin; 15: quercitrin; 16: luteolin; 17: quercetin.
