Table 4.
Terpenoid Lactones (wt%) in G. biloba Dietary Supplements
| Total terpenoid lactones
|
||||||||
|---|---|---|---|---|---|---|---|---|
| Commercial Product | Lot # | GA %a | GB % | GC % | GJ % | BB % | Measured | Declared on label |
| Nature’s Resource®Ginkgo Biloba | LB11565N | 0.20 ± 0.01 | 0.09 ± 0.01 | 0.11 ± 0.01 | 0.03 ± 0.00 | 0.19 ± 0.01 | 0.62 | 0.66 |
| Finest Ginkgo-MemoTM Concentrate | JJ10559 | 0.41 ± 0.02 | 0.12 ± 0.01 | 0.08 ± 0.00 | 0.07 ± 0.00 | 0.54 ± 0.01 | 1.22 | - |
| Ginkoba® | FD0534A | 0.10 ± 0.01 | 0.15 ± 0.00 | 0.03 ± 0.00 | 0.05 ± 0.00 | 0.24 ± 0.01 | 0.57 | - |
| Finest Natural Ginkgo Biloba | 6764-3 | 0.32 ± 0.02 | 0.10 ± 0.00 | 0.05 ± 0.00 | 0.05 ± 0.00 | 0.20 ± 0.00 | 0.72 | 0.86 |
| Nature’s RewardTM Ginkogin | CG912-682B | 0.04 ± 0.00 | 0.03 ± 0.00 | 0.02 ± 0.00 | 0.02 ± 0.00 | 0.03 ± 0.00 | 0.19 | 0.25 |
| Natrol®Ginkgo Biloba | 941583 | 0.27 ± 0.00 | 0.24 ± 0.00 | 0.10 ± 0.00 | 0.04 ± 0.00 | 0.44 ± 0.01 | 1.09 | - |
| Sundown® Ginkgo Biloba | 991534 | 0.12 ± 0.00 | 0.09 ± 0.00 | 0.02 ± 0.00 | 0.02 ± 0.00 | 0.14 ± 0.01 | 0.39 | 0.32 |
| Sundown® Ginkgo Biloba xtra® | 278024 | 0.27 ± 0.01 | 0.26 ± 0.00 | 0.07 ± 0.00 | 0.02 ± 0.00 | 0.33 ± 0.00 | 0.95 | 0.84 |
| Sundown® Ginkgo Biloba | 243240 | 0.29 ± 0.01 | 0.27 ± 0.01 | 0.09 ± 0.00 | 0.02 ± 0.00 | 0.39 ± 0.02 | 1.06 | 0.99 |
a
Three different samples of each commercial product were used per determination (n=3), and the extract of each sample was measured three times.