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Table 1 UV and MS data obtained under negative and positive ionisation mode of the extracts

From: Polyphenols profile and antioxidant activity of skin and pulp of a rare apple from Marche region (Italy)

  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
  1. The pseudomolecular ions are indicated in boldface.