| Customization: | Available |
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| Certification: | ISO, FDA, HACCP |
| Assay Method: | HPLC |
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Polygonum cuspidatum extract, derived from the Japanese Knotweed plant, is rich in resveratrol, a potent antioxidant known for its anti-aging, anti-inflammatory, and cardiovascular benefits. It is commonly used in supplements, cosmetics, and functional foods. Our extract comes from high-quality plants, processed via ethanol extraction to maintain its purity and effectiveness. The most popular forms are 50% and 98% resveratrol powders, which appear as a fine light-brown powder with a mild, earthy scent. Clients mainly use it in supplements (50-500 mg/day) and cosmetics (0.1-1%). Our product stands out due to its consistent quality and advanced processing, ensuring effectiveness in every batch.
COA
| Test Items | Specifications | Results | Test Method & Reference |
|---|---|---|---|
| Appearance | White or off-white fine powder | Conforms | Visual Inspection |
| Identification (HPLC) | Retention time matches standard | Conforms | HPLC, USP <621> |
| Assay (HPLC) | ≥98.0% | 98.5% | HPLC, USP <621> |
| Loss on Drying | ≤0.5% | 0.21% | USP <731> |
| Residue on Ignition | ≤0.1% | 0.03% | USP <281> |
| Heavy Metals | ≤10 ppm | <10 ppm | ICP-MS, USP <233> |
| Arsenic (As) | ≤1.0 ppm | <0.1 ppm | ICP-MS, USP <233> |
| Lead (Pb) | ≤1.0 ppm | <0.1 ppm | ICP-MS, USP <233> |
| Cadmium (Cd) | ≤0.1 ppm | <0.05 ppm | ICP-MS, USP <233> |
| Mercury (Hg) | ≤0.1 ppm | <0.05 ppm | ICP-MS, USP <233> |
| Particle Size | 95% pass 80 mesh | Conforms | Sieve Analysis, USP <786> |
| Microbial Count | ≤1,000 CFU/g | <100 CFU/g | USP <2021> |
| Yeast & Mold | ≤100 CFU/g | <10 CFU/g | USP <2021> |
| E. coli | Negative | Negative | USP <2022> |
| Staphylococcus aureus | Negative | Negative | USP <2022> |
| Residual Solvents | Meets ICH Q3C guidelines | Conforms | GC, USP <467> |
FAQ
Q: What is Polygonum cuspidatum extract?
A: It is an extract from the Japanese Knotweed plant, rich in resveratrol, an antioxidant known for its anti-aging and health benefits.
Q: What are the main benefits of Polygonum cuspidatum extract?
A: It supports cardiovascular health, reduces inflammation, and provides anti-aging effects.
Q: What is the most common form of Polygonum cuspidatum extract?
A: The extract is most commonly found in powdered form, available in different concentrations, such as 50% and 98% resveratrol.
Q: How is Polygonum cuspidatum extract processed?
A: It is typically extracted using ethanol to ensure purity and maintain the beneficial properties of resveratrol.
Q: How is Polygonum cuspidatum extract used in products?
A: It is used in dietary supplements, cosmetics, and functional foods, with typical dosages ranging from 50 to 500 mg/day for supplements.
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