Table 2.
Tandem MS/MS settings for multi-reaction monitoring (MRM) detection of monomeric-decameric flavanols.
| Compound | t R a | MW | [M–H]– b | Daughter Ion |
|---|---|---|---|---|
| (min) | (g mol−1) | (m/z) | (m/z) | |
| Monomer | 0.61 | 290.27 | 289.03 | 245.06 |
| Epigallocatechin | 0.74 | 458.37 | 305.04 | 124.98 |
| Dimer | 2.03 | 578.52 | 577.14 | 425.10 |
| Trimer | 3.05 | 866.77 | 865.22 | 287.07 |
| Tetramer | 3.73 | 1155.02 | 576.40 | 125.02 |
| Pentamer | 4.26 | 1443.28 | 720.41 | 125.02 |
| Hexamer | 4.66 | 1731.53 | 864.52 | 125.02 |
| Heptamer | 5.00 | 2017.81 | 1008.40 | 125.17 |
| Octamer | 5.28 | 2308.03 | 1152.58 | 125.17 |
| Nonamer | 5.53 | 2596.54 | 864.12 | 125.17 |
| Decamer | 5.75 | 2884.54 | 960.18 | 125.17 |
a Retention time. b All MRMs used singly charged parent ions except for pentamer, hexamer, heptamer and octamer, which are double-charged ([M–2H]2−), and nonamer and decamer, which are triple-charged ([M–3H]3−).