Table 5.
Major phenolic compounds in red currant leaves, average of 5 cultivars (biological replicate n = 1, technical replicate n = 3). CV = coefficient of variation among cultivars.
| Phenolic compound | m/z [M−H]− | Content (µg/g DW) | CV% | Detection limit (µg/g DW) | tR (min) | Peak number |
|---|---|---|---|---|---|---|
| Quercetin | 301.2 | BLD | NA | NA | NA | – |
| Gallic acid | 169.2 | 12.0 | 51.4 | 7.2 | 5.6 | 1 |
| Unknown peak | 299.0 | NA | NA | NA | 9.9 | 2 |
| Unknown peak | 447.3 | NA | NA | NA | 11.4 | 3 |
| Neo-chlorogenic acid | 353.3 | 518.3 | 175.2 | 12.7 | 11.3 | 4 |
| Epigallocatechin | 305.1 | 90.7 | 51.0 | 0.8 | 15.2 | 5 |
| Caffeoyl hexose | 341.0 | 191.5 | 22.0 | 29.7 | 17.2 | 6 |
| Catechin | 289.1 | 621.2 | 49.7 | 20.4 | 17.8 | 7 |
| Unknown peak | 319.0 | 415.1 | 52.1 | 42.0 | 18.9 | 8 |
| Chlorogenic acid | 353.3 | 39.6 | 102.9 | 6.1 | 18.0 | 9 |
| Red currant tannin I | 755.3 | 137.1 | 52.8 | 7.1 | 23.7 | 10 |
| Red currant tannin Ib | 755.3 | 2146.0 | 118.9 | 7.1 | 30.8 | 11 |
| Red currant tannin II | 739.4 | 1917.9 | 119.9 | 2.7 | 36.0 | 12 |
| Myricitin-malonyl-glucoside | 565.2 | 39.1 | 44.4 | 3.4 | 36.5 | 13 |
| Rutin | 609.4 | 4900.7 | 43.6 | 17.8 | 38.2 | 14 |
| Quercetin-3-O-galactoside | 463.1 | 38.1 | 169.5 | 0.9 | 40.0 | 15 |
| Unknown peak | 592.8 | NA | NA | NA | 41.5 | 16 |
| Quercetin-3-O-glucoside | 463.1 | 1618.4 | 46.4 | 5.0 | 41.0 | 17 |
| Kaempferol-3-O-rutinoside | 593.3 | 1347.6 | 60.9 | 2.8 | 45.8 | 18 |
| Quercetin-3-O-malonyl-glucoside | 549.2 | 2665.5 | 59.2 | 27.1 | 46.4 | 19 |
| Isorhamnetin-3-O-rutinoside | 623.3 | 9.4 | 43.3 | 1.2 | 47.3 | 20 |
| Kaempferol-3-O-glucoside | 447.3 | 926.3 | 139.9 | 0.6 | 48.9 | 21 |
| Isorhamnetin-3-O-glucoside | 477.2 | 3.4 | 50.7 | 1.3 | 50.2 | 22 |
| Kaempferol-malonyl-glucoside | 533.2 | 261.0 | 85.2 | 4.1 | 53.6 | 23 |