| Customization: | Available |
|---|---|
| Certification: | ISO, FDA, HACCP |
| Assay Method: | HPLC |
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Japanese Knotweed Extract, or Polygonum cuspidatum extract, is derived from the Japanese Knotweed plant, known for its high resveratrol content. It's widely used for its antioxidant and anti-inflammatory benefits. The extract is sourced from sustainable plants and undergoes an ethanol extraction process to ensure potency and purity.
Our best-selling products are 50% or 98% resveratrol extracts, which appear as light brown powders with a neutral odor and slightly bitter taste. Customers typically use this extract in supplements and skincare for improving skin elasticity, circulation, and general health.
Why choose our product? It stands out for its high purity, sustainable sourcing, and effective extraction, delivering visible results that our customers trust.
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 Japanese Knotweed Extract?
A: It's a plant extract rich in resveratrol, known for its antioxidant and anti-inflammatory benefits.
Q: What are the main benefits of Japanese Knotweed Extract?
A: It supports cardiovascular health, boosts skin elasticity, and has anti-aging properties.
Q: Where is Japanese Knotweed Extract sourced from?
A: It is extracted from the roots of the Japanese Knotweed plant, primarily grown in East Asia.
Q: What are the common uses of this extract?
A: It is commonly used in supplements, skincare products, and herbal remedies for overall wellness.
Q: How should Japanese Knotweed Extract be used in products?
A: Typically added in doses of 10-50 mg per serving in supplements and up to 1-2% in skincare formulations.
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