Table 3.
peak | tR (min) | UV λmax (nm) | MF | [M+H]+ | [M+Na]+ | identification |
---|---|---|---|---|---|---|
a | 5.0 | 216, 272 | C7H6O5 | 171.1 | 193.1 | gallic acid (10) |
b | 7.1 | 229, 284 | C6H6O3 | 127.1 | 149.1 | hydroxymethylfurfural (14) |
c | 10.1 | 218, 260, 294 | C7H6O4 | 155.1 | 177.1 | protocatechuic acid (12) |
d | 18.0 | 216, 272 | C8H8O5 | 185.1 | 207.1 | gallic acid methyl ester (11) |
e | 46.1 | 255, 355 | C21H20O12 | 465.1 | 487.1 | hyperoside (7) |
f | 54.1 | 252, 348 | C17H14O7 | 331.1 | 353.1 | 3,5-dimethoxyquercetin (6) |