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(A) HPLC chromatogram of mixed standard solutions (1: chlorogenic acid; 2: caffeic acid; 3: 4-hydroxycinnamic acid; 4: scopoletin; 5: ferulic acid; 6: rutin; 7: kaempferol-3-O-rutinoside; 8: narcissoside). (B) Chemical structures of eight phenolic compounds that were quantified in LB fruits.
