Table 2.
Optimum mass spectrometry conditions for the analytes in GBTs and the internal standard (IS)
| Analyte | Scan type | Ionization mode | Precursor ion | Product ion | Cone (V) | Collision (V) |
| BB | Multiple reaction monitoring | Negative | 325.00 | 182.85 | 30 | 20 |
| GA | Multiple reaction monitoring | Negative | 407.21 | 350.91 | 54 | 14 |
| GB | Multiple reaction monitoring | Negative | 422.93 | 366.96 | 22 | 16 |
| GC | Multiple reaction monitoring | Negative | 438.99 | 382.92 | 30 | 16 |
| QCT | Multiple reaction monitoring | Negative | 300.85 | 150.85 | 54 | 18 |
| KMF | Multiple reaction monitoring | Negative | 285.12 | 142.97 | 76 | 20 |
| ISR | Multiple reaction monitoring | Negative | 314.77 | 299.88 | 68 | 20 |
| IS | Multiple reaction monitoring | Negative | 423.63 | 166.74 | 2 | 36 |
BB: bilobalide; GA: ginkgolide A; GB: ginkgolide B; GC: ginkgolide C; QCT: quercetin; KMF: kaempferol; ISR: isorhamnetin