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Concentrations of representative furanocoumarins, polymethoxyflavones, and flavanones in grapefruit juice (GFJ) and modified GFJ (mGFJ)
| Mean Concentration (μmol/l) (SD) | ||
|---|---|---|
| Constituent | GFJ | mGFJ |
| Furanocoumarins | ||
| DHB | 38.8 (0.3) | 0.13 (0.01) |
| Bergamottin | 9.07 (0.04) | 0.50 (0.08) |
| Polymethoxyflavones | ||
| Nobiletin | 0.37 (0.02) | 0.02 (0.01) |
| Tangeretin | 0.11 (0.01) | 0.03 (0.01) |
| Flavanones | ||
| Naringin | 770 (5) | 531 (8) |
| Narirutin | 271 (4) | 183 (5) |
| Hesperidin | 24.6 (1.2) | 14.7 (0.6) |
DHB, 6′,7′-dihydroxybergamottin
