Table 1 UV and MS data obtained under negative and positive ionisation mode of the extracts
Rt (min) | UV (nm) | MS | Identification | Mode of identification | |
|---|---|---|---|---|---|
1 | 8.8 | 278 | 289, 577 [M-H]-/579 [M + H]+ | procyanidin (dimer) | MS/UV + ref |
2 | 9.1 | 280 | 289, 577, 865 [M-H]-/867 [M + H]+ | procyanidin (trimer) | MS/UV + ref |
3 | 9.5 | 278, 518 | 447 [M-H]-/449 [M + H]+ | cyanidin-3-O-galactoside | std + MS/UV |
4 | 10.1 | 280 | 289 [M-H]-/291 [M + H]+ | catechin | std + MS/UV |
5 | 10.4 | 292, 328 | 191, 353 [M-H]-/355 [M + H]+ | chlorogenic acid | std + MS/UV |
6 | 10.7 | 270, 304sh | 289 [M-H]-/291 [M + H]+ | epicatechin | std + MS/UV |
7 | 10.8 | 278 | 577, 865 [M-H]-/867 [M + H]+ | procyanidin (trimer) | MS/UV + ref |
8 | 11.1 | 278 | 577, 865 [M-H]-/579, 867 [M + H]+ | procyanidin (trimer) | MS/UV + ref |
9 | 11.4 | 278 | 577, 865, 1153 [M-H]-/579, 867, 1155 [M + H]+ | procyanidin (tetramer) | MS/UV + ref |
10 | 11.8 | 278, 312sh | 191, 337 [M-H]-/339 [M + H]+ | p-coumaroylquinic acid | |
11 | 12.2 | 278, 312sh | 337 [M-H]-/339 [M + H]+ | p-coumaroylquinic acid | MS/UV + ref |
12 | 13.5 | 609 [M-H]-/303, 611 [M + H]+ | rutin | std + MS/UV | |
13 | 14.2 | 254, 264, 354 | 463 [M-H]-/303, 465 [M + H]+ | hyperoside + quercetin-3-O-glycoside | std + MS/UV |
14 | 15.2 | 258, 356 | 433 [M-H]-/303, 435 [M + H]+ | quercetin-3-O-pentoside | MS/UV + ref |
15 | 15.4 | 284 | 433, 567 [M-H]-/275, 435, 569 [M + H]+ | phloretin-2-xyloglycoside | MS/UV + ref, tentatively |
16 | 15.8 | 266, 356 | 433 [M-H]-/303, 435 [M + H]+ | quercetin-3-O-pentoside | MS/UV + ref |
17 | 16.2 | 266, 356 | 447 [M-H]-/303, 449 [M + H]+ | quercitrin [quercetin-3-O-rhamnoside] | std + MS/UV |
18 | 17.6 | 284 | 435 [M-H]-/275, 459 [M + Na]+ | phloretin-2-glycoside | MS/UV + ref, tentatively |