Table 1 Characterisation of phenolic compounds of MBSAE by HPLC-DAD-ESI-MS/MS
compound no. | tR (min) | λ max (nm) | [M-H]− or [M-2H]− (m/z) | Fragmention (m/z) | Tentative identification |
|---|---|---|---|---|---|
1 | 6.71 | 254 | 299 | 137 | Hydroxybenzoic acid hexose |
2 | 7.94 | 276; 515 | 463 | 301 | Delphinidin-3-O-galactoside |
3 | 8.93 | 276; 520 | 463 | 301 | Delphinidin-3-O-glucoside |
4 | 9.04 | 354 | 463 | 301 | Quercetin hexoside |
5 | 10.33 | 276; 515 | 447 | 301 | Delphinidin-3-O-rhamnoside |
6 | 12.27 | 276; 515 | 609 | 301 | Delphinidin rutinoside |
7 | 15.95 | 276; 520 | 609 | 301 | Delphinidin-3- (6 coumaroyl)-glucoside |
8 | 17.25 | 278; 524 | 493 | 315 | Petunidin-3-O- glucoside |
9 | 20.38 | 278; 525 | 655 | 315 | Petunidin diglucoside |
10 | 29.25 | 278; 525 | 563 | 315 | Petunidin malonylglucoside |
11 | 30.66 | 525 | 621 | 315 | Petunidin-3-O-rutinoside |
12 | 30.74 | 278; 355 | 447 | 315 | Isorhamnetin-O-pentoside |
13 | 30.78 | 276; 516 | 615 | 299 | Peonidin sambubioside |
14 | 39.90 | 351 | 461 | 315 | Isorhamnetin-O-rhamnoside |
15 | 39.94 | 282; 527 | 511 | 331 | Malvidin-O-galactoside |
16 | 41.07 | 282; 527 | 511 | 331 | Malvidin-O-glucoside |
17 | 44.04 | 276; 516 | 641 | 299 | Peonidin diglucoside |
18 | 69.95 | 278; 525 | 461 | 331 | Petunidin methyl pentose |