Table 5 Marker metabolites in G. rhodantha
Peak No. | Rt (min) | precursor ion ( m/z ) | CE (eV) | MS/MS fragment (Relative abundance %) | Identity | Ref |
|---|---|---|---|---|---|---|
4 | 4.2 | 423.30 [M-H]− | −24 | 423 (24) 261 (100) 151 (32) 125 (8) | rhodanthenones B | [20] |
425.20 [M + H] + | −13 | 425 (18) 263 (100) 145 (19) 127 (8) | ||||
7 | 5.1 | 375.10 [M-H]− | 22 | 213 (100) | loganic acid* | |
9 | 5.5 | 405.15 [M + H]+ | −16 | 405 (31) 378 (12) 243 (100) 211 (63) | secoxyloganin | [19] |
449.20 [M + HCOO]− | 21 | 449 (27) 403 (22) 359 (26) 241 (100) 197 (29) 179 (77) 161 (18) 144 (17) 127 (15) | ||||
10 | 5.9 | 413.30 [M + Na]+; 389.20 [M-H]− | 25 | 389 (21) 345 (11) 227 (22) 209 (8) 183 (23) 165 (31) 139 (34) 121 (100) 113 (48) 95 (28) | secologanoside | [19] |
12 | 6.6 | 419.15 [M + HCOO]− | 15 | 179 (100) | swertiamarin* | |
375.10 [M + H]+ | −12 | 195 (100), 177 (63) | ||||
14 | 7.4 | 421.25 [M-H]− | 30 | 301 (100), 331 (71) | mangiferin* | |
— | 7.5 | 401.10 [M + HCOO]− | 20 | 355 (23) 179 (100) | gentiopicroside* | |
15 | 7.9 | 403.20 [M + HCOO]− | 21 | 357 (29) 195 (32) 125 (100) | sweroside* | |
20 | 10.9 | 449. 10 [M + H]+ 447.20 [M-H]− | −15 | 449 (13) 431 (47) 413 (65) 383 (43) 359 (22) 329 (100) | isoorientin | |
27 | 10.5 | 1075.40 [M-H]−; 1099.10 [M + Na]+ | 35 | 1075 (51), 913 (59) 555 (100) 357 (28) 197 (32) 153 (31) | unknow | |
28 | 10.8 | 1433.30 [M-H]−; 1452 [M+ NH4]+ | 32 | 1433 (17) 1271 (100) 1075 (43) 913 (84) 555 (100) 197 (20) 153 (17) | unknow | |
29 | 18.0 | 913 [M-H]−; 937.13 [M + Na]+ | 39 | 913 (14), 555 (55), 357 (12), 197 (100) 153 (61) 109 (18) | rhodenthoside A | |
30 | 18.1 | 1629 [M-H]−; 1648 [M + NH4]+ | 63 | 1629 (7) 1271 (37) 913 (93) 555 (100) 197 (29) 153 (18) | rhodenthoside B | |
31 | 18.5 | 1643 [M-H]−; 1667 [M + Na]+ | 55 | 1643 (27) 1285 (100) 1271 (33) 927 (36) 913 (53) 555 (37) 197 (29) 153 (22) | unknow | |
32 | 18.9 | 1657 [M-H]−; 1681 [M + Na]+ | 59 | 1657 (41) 1285 (32) 927 (73), 913 (31) 555 (74) 197 (33) 153 (100) 109 (29) | rhodenthoside C |