Table 2.
Phenolic compounds identified in the citrus extracts by HPLC-DAD-MS/MS.
| Peak Nº | Compound | RT | m/z- | MS/MS | λmax | mg/g Extract 1 |
Extract |
|---|---|---|---|---|---|---|---|
| 1 | Ferulic acid-O-Glu | 16.94 | 355 | 193/160/134 | 294/328 | 10.40 ± 0.51 | Lemon |
| 2 | Apigenin 6,8-di-C-Glu (Vicenin-2) | 18.13 | 593 | 503/473/383/353 | 270/332 | 14.6 ± 0.4 | Lemon |
| 3 | Eriodictyol-Glu-Rha-Glu | 18.70 | 757 | 595/449/287 | 282/330 | 33.86 ± 0.91 | Lemon |
| 4 | Diosmetin 6,8-di-C-Glu | 19.00 | 623 | 605/533/503/383 | 270/346 | 9.62 ± 0.27 | Lemon |
| 5 | Crisoeriol 6,8-di-C-Glu | 19.65 | 623 | 533/503/383 | 270/346 | 11.3 ± 0.2 | Lemon |
| 6 | Eriocitrin | 22.90 | 595 | 459/329/287 | 284/334 | 83.3 ± 5.6 | Lemon |
| 7 | Apigenin 8-C-xylanopyranosil-Glu | 23.39 | 563 | 413/341/293 | 268/332 | 10.0 ± 0.15 | Lemon |
| 8 | Diosmetin 8-C-Glu | 24.88 | 461 | 371/341 | 268/334 | 14.31 ± 0.35 | Lemon |
| 9 | Naringenin 7-O-rutinoside (naringin) | 25.02 | 579 | 271 | 278/330 | 35.45 ± 6.04 | Lemon |
| 10 | Hesperidin | 28.10 | 609 | 301 | 284/336 | 6.3 ± 0.1 133.7 ± 15.9 |
Lemon Orange |
| 11 | Diosmetin 7-O-rutinoside (Diosmin) | 28.40 | 607 | 299/284 | 270/334 | 4.12 ± 0.13 | Lemon |
| 12 | Limocitrin-HMG-Glu | 29.43 | 651 | 549/507/345 | 274/350 | 6.9 ± 0.2 | Lemon |
| Total: | 240.16 ± 14.86 | Lemon | |||||
| 133.7 ± 15.9 | Orange | ||||||
1 Values are shown as mean ± SD (n = 3). Nº, peak number in Figure S1; RT, retention time; Glu, glucoside; Rhamn, rhamnoside; HMG, 3-hydroxy-3-methyl-glutaryl-.