Table 3.
Compounds | Retention time (min) | UV (nm) | Structure assignment |
Delphinidin | 40.12 | 254,531 | Delphinidin aglycon |
S1 | 14.74 | 251,521 | Delphinidin 3-O-galactoside |
P1a | 14.65 | 250,520 | Delphinidin 3-O-galactoside |
P2b | 17.43 | 251,520 | Delphinidin 4′-O-galactoside |
P3b | 19.92 | 251,533 | Delphinidin 7-O-galactoside |
Cyanidin | 46.73 | 255,526 | Cyanidin aglycon |
S2 | 17.44 | 254,515 | Cyanidin 3-O-galactoside |
P4a | 17.17 | 255,515 | Cyanidin 3-O-galactoside |
P5b | 20.84 | 255,516 | Cyanidin 4′-O-galactoside |
aThe reaction products were assigned according to comparison of HPLC retention time and UV spectra with authentic compounds.
bThe reaction products were assigned according to the hypsochromic shift.