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Calculated and observed mass of polyphenols extracted from onion skins.
| Compound (Polyphenols) | Retention Time of Standards (min) | Calculated Mass | Observed Mass |
|---|---|---|---|
| Quercetin | 13.8 | 302.238 | 303.0779 |
| Quercetin -3 -Glucoside | 5.4; 6.9; 8.5 | 464.38 | 465.1506 |
| Quercetin-3,4′-Glucoside | 3.5 | 626.52 | 627.1548 |
