Products Description
This product is a standardized botanical extract obtained from the root of Polygonum cuspidatum, concentrated to trans‑resveratrol ≥98% by HPLC. Trans‑resveratrol is a naturally occurring polyphenolic phytoalexin that acts via multiple molecular pathways:
- Direct free‑radical scavenging to reduce oxidative stress and lipid peroxidation.
- Modulation of SIRT1 and AMPK signaling linked to cellular homeostasis and metabolic regulation.
- Inhibition of pro‑inflammatory mediators and support for endothelial function via nitric oxide modulation.
- Support for phase II detoxification and redox balance through emodin‑related pathways.
Manufactured under organic standards with no fillers, carriers, or artificial preservatives. Each batch is verified for identity, purity, heavy metals, and microbiological load to meet food and cosmetic grade specifications.

Technical Specification
| Item | Specification |
|---|---|
| Product Name | Organic Giant Knotweed Extract 98% |
| INCI Name | Resveratrol |
| CAS No. | 501-36-0 |
| Active Compound | Trans‑Resveratrol ≥98% (HPLC) |
| Appearance | Ivory‑white fine powder |
| Loss on Drying | ≤5.0% |
| Residue on Ignition | ≤1.0% |
| Heavy Metals | As ≤2 ppm; Pb ≤3 ppm; Cd ≤1 ppm; Hg ≤0.1 ppm; Total ≤10 ppm |
| Microbiological | Total Plate Count ≤1000 CFU/g; Yeast & Mold ≤100 CFU/g; E. coli, Salmonella, Staphylococcus aureus: Negative |
| Particle Size | 95% through 80 mesh |
| Solubility | Soluble in ethanol, DMSO; slightly soluble in water |
| Shelf Life | 24 months when properly stored |
| Storage | Cool, dry, well‑ventilated; protect from light and heat |
Health Benefits
Cardiovascular Support
Helps maintain healthy blood pressure and cholesterol levels, supports vascular integrity, and promotes healthy circulation with antioxidant protection.
01
Powerful Antioxidant & Anti‑Aging
Neutralizes free radicals, reduces oxidative stress, supports cellular repair, and helps slow visible signs of aging.
02
Immune & Metabolic Health
Modulates immune response, supports liver detoxification via emodin, and aids healthy metabolic function.
03
Brain & Cognitive Functionrochemical Solutions
Supports neuroprotection, mental clarity, and healthy cognitive aging as supported by emerging research.
04
Safety Profile
- Toxicological Summary: Trans‑resveratrol shows low acute and subchronic toxicity in animal models. NOAEL in repeated‑dose studies supports safe use at intended dietary and cosmetic levels.
- Human Tolerance: Well‑tolerated at typical supplemental doses; mild gastrointestinal effects (nausea, loose stools, flatulence) may occur at high doses ≥1000 mg/day.
- Skin Compatibility: Non‑irritating in standard skin irritation tests; suitable for topical formulations.
- Contraindications: Caution in pregnancy/lactation (limited data); patients on anticoagulants/antiplatelets or with hormone‑sensitive conditions should consult a healthcare provider.
- Drug Interactions: May potentiate effects of anticoagulants; may modulate certain CYP450 pathways.
- GHS Classification: Not classified as hazardous under normal handling.
Applications
Dietary Supplements: Capsules, tablets, softgels, resveratrol blends
Functional Foods & Beverages: Fortified powders, bars, drinks; compliant with local food additive regulations.
Cosmetic & Skin Care: Topical anti‑aging, antioxidant, and brightening formulas; for external use only.
Nutraceutical Formulations: Targeted formulas for cardiovascular, metabolic, immune, and cognitive health support.
Pharmaceutical Raw Materials: For research and development only; not for direct clinical administration without further formulation.
Certifications & Documents
- USDA Organic Certificate
- HPLC Test Report
- Heavy Metals Analysis
- Microbiological Report
- COA, MSDS, Allergen Statement
Packaging & Storage

Packaging and service
Storage: Store in a dry, cool, and well-ventilated place.
Packaging: 1 kg/bag, 25 kg/drum
Delivery Time: 7 days after order placement
Delivery Methods
1.Express Delivery
3-5 days for shipments under 100 kg
Door-to-door service
2.Ocean Freight
Over 300 kg: Approximately 30 days. Port-to-port service requires a professional customs clearance agent.
3.Air Freight
100kg-1000kg, 5-7 days
Airport-to-airport service, requires a professional customs clearance agent

FAQ
Q:1.What is giant knotweed extract used for?
A: It is widely used to support antioxidant defense, cardiovascular health, liver function, joint comfort, and healthy aging. Its high resveratrol content makes it ideal for anti‑aging supplements and functional wellness products.
Q:2.Is this product organic and tested?
A: Yes. It is USDA Organic certified, with 98% resveratrol verified by HPLC. Every batch is tested for purity, heavy metals, and microbes.
Q:3.What is the minimum order quantity (MOQ) for this product?
A: Our standard MOQ is 1kg for trial orders, and we offer flexible bulk MOQs (10kg, 50kg, 100kg+) with competitive pricing. For custom packaging or specifications, please contact us to discuss your needs.
Q:4.How long does it take to receive the samples, and is there any cost?

If you have any questions about our Organic Giant Knotweed Extract 98%, samples, pricing or custom requirements, please feel free to contact us anytime.
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