Table 1.
Id. | Compounds | RT (min) | [M − H]− (m/z) | MS2 Ion Fragments (m/z) a | MS3 Ion Fragments (m/z) a | Ident. c | Concentration (μmol/g dw) |
---|---|---|---|---|---|---|---|
1 | Eriodictyol-7-O-rutinoside (eriocitrin) | 9.5 | 595 | 287 b | 151 | [34] | 2.30 ± 0.22 |
2 | Eriodictyol-7-O-neohesperidoside (neoeriocitrin) | 9.71 | 595 | 459, 287, 235 | 235, 357, 441, 271, 151 | [34] | 7.83 ± 0.85 |
3 | Naringenin-7-O-rutinoside (narirutin) | 10.19 | 579 | 271 | 151, 177 | Std | 1.06 ± 0.05 |
4 | Hesperetin-7-O-rutinoside (hesperidin) | 10.2 | 609 | 301 | 286, 242, 283, 257, 125 | Std | 2.10 ± 0.22 |
5 | Naringenin-7-O-neohesperidoside (naringin) | 10.4 | 579 | 459, 271, 235 | 357, 235, 271, 441, 339 | [38] | 12.46 ± 1.61 |
6 | Eriodictyol-7-O-neohesperidoside-6″-O-HMG | 10.57 | 739 | 595, 637, 677 | 459, 287 | [35] | 7.53 ± 0.76 |
7 | Hesperetin-7-O-neohesperidoside (neohesperidin) | 10.79 | 609 | 301, 343, 489, 447 | 286, 242, 283, 257, 125 | [34] | 10.31 ± 0.61 |
8 | Naringenin-7-O-neohesperidoside-6″-O-HMG (melitidin) | 11.13 | 723 | 579, 621, 661 | 459, 271, 313 | [34] | 8.25 ± 0.93 |
9 | Naringenin-7-O-glucoside-6″-O-HMG | 11.39 | 577 | 271, 433, 475 | 151, 177 | [35] | 0.27 ± 0.03 |
10 | Hesperetin-7-O-neohesperidoside-6″-O-HMG (brutieridin) | 11.43 | 753 | 609, 651, 691 | 301, 343, 489 | [34] | 19.70 ± 2.04 |
11 | Isosakuranetin-7-O-rutinoside (didymin) | 12.25 | 593 | 285, 327, 473 | 270, 243, 164, 241, 151 | Std | 0.26 ± 0.02 |
12 | Isosakuranetin-7-O-neohesperidoside-6″-O-HMG (parmigin) | 12.75 | 737 | 593, 635, 675 | 285 (MS4: 270, 243), 327, 473 | - | 0.99 ± 0.03 |
13 | Naringenin | 13.32 | 271 | 151, 177 | Std | traces | |
14 | Isosakuranetin | 13.57 | 285 | 270, 243 | Std | traces | |
15 | Hesperetin | 13.78 | 301 | 286, 242 | Std | traces | |
16 | Eriodyctiol | 13.82 | 287 | 151 | [38] | traces |
a Fragment ions are listed in order of relative abundance; b MS ions in bold were those subjected to successive MS fragmentation; c Ident., identification mode: [Reference] or Std (standard, compound identified by comparison of its retention time and MS data with that of a reference compound). Mean (n = 3) ± SD. RT, retention time.