Audited Supplier
Our Resveratrol Raw Material Knotweed is sourced from pristine areas in Japan, which have excellent growing conditions. After sourcing the raw materials, a solvent extraction method is used to effectively isolate the most beneficial compound, resveratrol.Our main hot-selling specifications are 10% is a darker brown-yellow color, and 98% is an off-white powder. The powder is almost odorless and slightly sweet. The product properties are very stable and have a long shelf life if stored properly. Our products are widely used in dietary supplements, pharmaceuticals, and cosmetics. For dietary supplements, about 100-500 mg per serving is common, while for skin care products, a concentration of 1-2% is usually recommended. Adding our bulk resveratrol powder to their products can improve their overall effectiveness.
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 Resveratrol?
A: Resveratrol is a powerful antioxidant naturally found in grapes, red wine, and Japanese Knotweed, known for its anti-aging and heart-health benefits.
Q: What benefits can this supplement provide?
A: It supports cardiovascular health, promotes skin rejuvenation, and may have anti-inflammatory effects, helping to fight oxidative stress.
Q: How should I use this product?
A: It can be taken as a dietary supplement or mixed into smoothies. A typical dose is 100-500 mg per day depending on individual needs.
Q: How pure is this product?
A: This supplement is 98% pure, with the purity confirmed through HPLC testing to ensure high quality and effectiveness.
Q: Is this supplement safe for everyone?
A: Yes, it's generally safe when used as recommended. However, high doses might cause mild digestive issues. Always consult a healthcare provider if you have any concerns.
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