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Typical HPLC-DAD chromatogram (shown at 320 nm) from methanol extracts of broccoli whole heads before storage. Tentative identification of peaks was performed as indicated in Table 1. Peak assignment: (1) 3-O-CQA; (2) 5-O-CQA; (3) 1,2-DSG; (4) 1-S-2-FG (5) 1,2,2-TSG; (6) 1,2-DFG; (7) 1,2-DS-2-FG.
