Table 1.
ESI-MS ion fragments of the six major ginsenosides.
| Ginsenoside | Empirical | Molecular | Ginsenoside content | Main ion fragments, m/z | |
|---|---|---|---|---|---|
| retention order | formula | weight (Da) | within extract (μg g−1) | [M – H]− | Others |
| Rg1 | C42H72O14 | 801.01 | 347.3 ± 99.7 | 799.4 | 859.3, 945.4 |
| Re | C48H82O18 | 947.15 | 8280.4 ± 792.3 | 945.7 | 1005.2, 799.6 |
| Rb1 | C54H92O23 | 1109.29 | 1585.8 ± 86.8 | 1107.6 | 1031.4, 1163.2, 1193.1 |
| Rc | C53H90O22 | 1079.27 | 32.9 ± 8.0 | 1077.5 | 329.5, 1031.3, 1149.5 |
| Rb2 | C53H90O22 | 1079.27 | 62.6 ± 10.6 | 1077.5 | 329.5, 945.5, 1005.2, 1149.5 |
| Rd | C48H82O18 | 947.15 | 90.4 ± 3.2 | 945.6 | 1005.2, 849.7, 1059.2 |