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The SIM chromatograms of methanol/water (75/25 v/v) chamomile extract obtained at room temperature using exhaustive (2 h) ultrasound assisted extraction (a) and methanolic (b), methanol/phosphoric buffer (pH 9; 75/25 v/v; c), ethanolic (d), ethanol/water (75/25 v/v; e) extracts from chamomile, all heated under reflux for 2 h. Peak numbers correspond to compound numbers reported in Supplementary Scheme 1
