| Customization: | Available |
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| Certification: | ISO, FDA, HACCP |
| Assay Method: | HPLC, UV |
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Product Name: Ginkgo Biloba Extract| Item | CP | USP | EP |
| Flavonol Glycosides | ≥24% | 22%~27% | 22%~27% |
| Total Terpene Lactones | ≥6% | 5.4%~12% | 5.4%~6.6% |
| Bilobalide | / | 2.6%~5.8% | 2.6%~3.2% |
| Ginkgolides A+B+C | / | 2.8~6.2% | 2.8%~3.4% |
| Quercetin:Kaempferol (Peak area) | 0.8~1.2 | 0.8~1.2 | 0.8~1.2 |
| Isorhamnetin: Quercetin (Peak area) | >1.5 | >1.5 | >1.5 |
| Ginkgolic Acid | ≤10ppm | ≤5ppm | ≤5ppm |
| Free Quercetin | ≤10ppm | ≤5ppm | ≤5ppm |
| Free Kaempferol | ≤10ppm | ≤10ppm | ≤10ppm |
| Free Isorhamnetin | ≤4ppm | ≤4ppm | ≤4ppm |
| Rutin | ≤4% | ≤4% | ≤4% |
| Solvent residue | / | USP<561> | EC396/2005 |
| Product Name: | Ginkgo Biloba Extract | Latin Name: | Ginkgo biloba L |
| Part Used: | Dried leaf | Extract Solvent: | Ethanol & water |
| Country Origin: | China | Extract Ratio: | 35:1`67:1 |
| Standard: | USP44-NF39 (USP-NF2021) | ||
| ITEM | SPECIFICATION | STANDARD |
| Appearance | Brown powder | Visual |
| Identification | A: THIN-LAYER CHROMATOGRAPHIC IDENTIFICATION TEST (Test for flavanoids) : The Standard solution shows in its lower part with increasing R F values a yellowish-brown fluorescent zone due to rutin (R F 0.28), a light blue fluorescent zone due to chlorogenic acid (R F 0.36), and a yellow fluorescent zone due to quercetin (R F 0.92). The Sample solution shows a yellowish-brown fluorescent zone, a light blue fluorescent zone, and a yellowish-brown fluorescent zone at R F similar to those of rutin, chlorogenic acid, and quercetin, respectively, in the Standard solution. Additional yellowish to yellowish-green zones due to flavonoids detected in the Sample solution chromatogram include one zone below the rutin zone, two zones between the rutin and chlorogenic acid zones, and two zones above the chlorogenic acid zone. Other zones may be seen in the Sample solution chromatogram. |
USP44-NF39 |
| B: HPLC (Test for content of Flavonol Glycosides): the retention times of the peaks for quercetin, isorhamnetin, and kaempferol of the Sample solution correspond to those of the Standard solution. In the chromatogram of the Sample solution, the ratio of the kaempferol peak to the quercetin peak is NLT 0.7, and the peak for isorhamnetin is NLT 0.1 times the size of the quercetin peak. |
USP44-NF39 | |
| Loss on drying | ≤5.0% | 1g/105ºC/5hrs |
| Residual Solvents | USP<565> | USP<565> |
| Residual Pesticide | USP<561> | USP<561> |
| Total flavonoids (Calculated as flavonol glycosides, dry basis) | 22%~27% | USP44-NF39 |
| Total terpene lactones(Dry basis) | 5.4%~12% | USP44-NF39 |
| Ginkgolides A+B+C | 2.8%~6.2% | USP44-NF39 |
| Bilobalide | 2.6%~5.8% | USP44-NF39 |
| Rutin | ≤4% | USP44-NF39 |
| Quercetin | ≤0.5% | USP44-NF39 |
| Ginkgolic Acids | ≤5ppm | USP44-NF39 |
| Total Aerobic Bacterial | ≤1000CFU/g | USP |
| Yeast &Mould | ≤100CFU/g | USP |
| Escherichia Coli | Absence | USP |
| Salmonella | Absence | USP |
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