2.Chemical Structure
R=OH Quercertin(bilobalide) derivative
R=H Kaempferol derivative
R=OCH3 Isorhamnetin derivative
R1=OH, R2=R3=H Ginkgolide A
R1=R2=OH, R3=H Ginkgolide B
R1=R2=R3=OH Ginkgolide C
3.Quality Specification
Specs |
CP |
USP |
EP |
In-house |
Flavonol glycosides |
≥24.0% |
22.0-27.0% |
22.0-27.0% |
22.0-27.0% |
Terpene lactones |
≥6.0% |
5.4-12.0% |
5.4-6.6% |
5.4-12.0% |
Bilobalide |
/ |
2.6-5.8% |
2.6-3.2% |
2.6-5.8% |
Ginkgolide A, B, C (sum) |
/ |
2.8-6.2% |
2.8-3.4% |
2.8-6.2% |
Quercetin:Kaempferol |
0.8-1.2 |
0.8-1.2 |
0.8-1.2 |
0.8-1.2 |
Isorhamnetion:Quercetin |
>0.15 |
>0.15 |
>0.15 |
>0.15 |
Ginkgolic acid |
≤10mg/kg |
≤5mg/kg |
≤5mg/kg |
<1mg/kg |
Quercetin (free) |
≤10.0mg/g |
≤5.0mg/g |
≤5.0mg/g |
≤5.0mg/g |
Kaempferol (free) |
≤10.0mg/g |
≤10.0mg/g |
≤10.0mg/g |
≤10.0mg/g |
Isorhamnetion (free) |
≤4.0mg/g |
≤4.0mg/g |
≤4.0mg/g |
≤4.0mg/g |
Rutin |
≤4.0% |
≤4.0% |
≤4.0% |
≤4.0% |
Pesticide residue |
/ |
USP<561> |
EC396/2005 |
EC396/2005 |
4. Function and Use
GBE has a number of health benefits, including enhancing cognitive function and providing support for better memory functions. It has been used for improving blood flow, for improving memory/concentration due to certain brain problems (e.g., Alzheimer's disease, dementia), and for relief of premenstrual syndrome (PMS), eye problems, and dizziness. It also provides powerful antioxidant properties.5. Packaging and Storage
25kg/drum
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