Giant Knotweed Rhizoma Extract
Latin Name: Reynoutria japonica Houtt.
Specification: Standardized extract
Appearance: Off-white Fine powder
Application: Antioxidant (Resveratrol) / Cardiovascular Health
Type: Herbal Extract
Packaging: 25kg/drum
Free Sample: Available
Lead time: 10 days
Country of origin: Mainland China
Certificate: ISO9001, FSSC22000, Kosher, Halal
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Product Introduction
Giant Knotweed Rhizoma Extract – Premium Resveratrol Source for Global Health Industries
world-way biotech inc. offers pharmaceutical-grade Giant Knotweed Rhizoma Extract, standardized to 20%-98% Trans-Resveratrol via HPLC analysis. This extract is better for you than grape-based alternatives because it comes from our 1,000+ mu of self-managed cultivation bases and is processed at our 5,000-ton-per-year plant. We have been extracting plants for more than 30 years and have certificates such as ISO9001, FSSC22000, Kosher, and Halal. We work with over 500 businesses in over 60 countries. Our advanced ICP-MS and GC-MS testing makes sure that the ingredients on the label are free of PAHs. ≤5% moisture, ≤5% ash, and 95% pass through an 80-mesh screen. It comes as an off-white fine powder that dissolves in water and is packed in drums of 25 kg. Ten days for lead time.

What Makes Our Giant Knotweed Rhizoma Extract Superior?
You deserve materials that are backed by science and made by experts. Our product comes from rhizomes of Reynoutria japonica Houtt. plants that were grown in strict accordance with strict agricultural rules at our integrated farming facilities.
Our extraction method uses cutting edge solvent extraction, concentration, and spray-drying technology, which is different from using synthetic resveratrol or materials that were collected in the wild and aren't always consistent. This keeps the Trans-Resveratrol and related chemicals like Polydatin and Emodin consistent from batch to batch and makes sure they last as long as possible.
Our 42-person R&D team, which includes 5 PhD holders and 1 doctoral assistant, is always working to improve extraction ratios. To put it another way, you get steady, high-purity actives that can be used in nutraceuticals, functional foods, and cosmetics.

Technical Specifications & Quality Parameters
| Parameter | Specification |
|---|---|
| Product Name | Polygonum Cuspidatum Extract / Giant Knotweed Rhizoma Extract |
| Latin Name | Reynoutria japonica Houtt. |
| Active Ingredient | Trans-Resveratrol 20%-98% (HPLC) |
| Appearance | Off-white to yellowish fine powder |
| Mesh Size | 95% pass 80 mesh |
| Moisture Content | ≤ 5.0% |
| Ash Content | ≤ 5.0% |
| Solubility | Water soluble |
| Packaging | 25kg/fiber drum with double poly bags |
| Lead Time | 10 days |
| Certifications | ISO9001, FSSC22000, Kosher, Halal |
| Free Sample | Available upon request |
Key Health Benefits & Applications
Your recipe needs to be able to be proven to work. The main ingredient in the product, resveratrol, turns on the SIRT1 longevity pathway. This makes it an important part of anti-aging and heart health goods.
Powerhouse of Antioxidants
In some tests, resveratrol is more effective than vitamin C at getting rid of free radicals. At the molecular level, this helps cells age in a healthy way by protecting them from toxic stress.
Cardiovascular Support
Resveratrol has been shown in clinical tests to improve endothelial function and help keep blood lipid profiles healthy. This ingredient is backed by facts and will help your customers who are looking for ways to improve their heart health.
Action Against Inflammation
Resveratrol and emodin work together to change mechanisms that cause inflammation. Since this is the case, our extract is perfect for supplements that help joints and items that help athletes recover.
Uses for Cosmetics
High-purity resveratrol (98%) works well in anti-aging serums, creams, and formulas. Because it has a low molecular weight, it can easily penetrate the skin and protect it from UV rays.

Manufacturing Excellence Behind Every Batch
Reliability is what you need, not shocks. Our Phytoway Extraction Facility uses closed-loop solvent extraction methods that get back 95% or more of the ethanol. This is better for the environment and saves money at the same time.
Before they are used, raw materials are checked three times: visually, using TLC to check their identity, and by measuring their moisture content. Our HPLC-MS lab measures the amount of Trans-Resveratrol in three different batches for every production run.
GC-MS looks for leftover solvents that are less than the limits set by the EU Pharmacopoeia. Heavy metal compliance is checked with ICP-MS (Pb <1.0ppm, As <1.0ppm, Cd <0.5ppm, Hg <0.1ppm).
The result? You receive Giant Knotweed Rhizoma Extract with documented traceability from plantation to finished product, backed by comprehensive Certificates of Analysis and regulatory support documents.

Custom Solutions for Your Formulation Needs
Both your goods and our services aren't made to fit everyone. We offer a wide range of customisation choices so that we can meet all of your needs.
Flexibility in Concentration
Our spray-drying and crystallisation skills can get you the 50% resveratrol you need for cheap capsules or the 98% ultra-pure grade you need for high-end makeup.
Optimisation of Particle Size
Standard 80-mesh powder works well for most uses, but we can micronise it to make it dissolve faster in liquid supplements or quick drink mixes.
Improvement of Solubility
Our formulators can mix the extract with natural carriers like beta-cyclodextrin ahead of time to make it easier for healthy drinks to mix with water.
Complete OEM Support
Our multilingual technical team (English, Chinese, Portuguese, and Russian) helps you with formula creation, stability testing, and packaging solutions from the time you come up with an idea to the time you start making it on a large scale.
Quality Certifications & Regulatory Compliance
You're going into foreign markets, so the quality of your ingredients needs to be up to par. World-Way keeps its certifications up to date across all major regulatory regimes.
Our FSSC22000 certification makes sure that we handle food safety during all stages of buying, processing, and storing it. Getting certified as Kosher or Halal can help you get into niche areas. You can ask for organic approval (USDA/EU) for certain batches.
Each shipment comes with a lot of paperwork, like a COA with full assay data, an MSDS, an allergen statement, a non-GMO declaration, a BSE/TSE-free certificate, and customs paperwork special to the country. This gets rid of regulatory problems and speeds up your time to market.
FAQ
Q: What's the difference between Polygonum cuspidatum and grape-derived resveratrol?
A: The product contains 20-98% Trans-Resveratrol versus grape extract's typical 5-10%. Our knotweed source offers superior cost-effectiveness, year-round availability, and higher purity. The botanical also provides synergistic compounds like Polydatin for enhanced bioavailability.
Q: How do you ensure consistent Trans-Resveratrol content?
A: We control the entire supply chain—from proprietary cultivation techniques optimizing root resveratrol accumulation, through standardized extraction parameters validated by our PhD-level chemists, to triple-verification HPLC testing. Batch-to-batch variation stays within ±2%.
Q: Can I get samples before bulk ordering?
A: Absolutely. We provide free samples (typically 50-100g) with full COA documentation. This lets you conduct your own stability, compatibility, and efficacy testing before committing to production quantities.
Q: What's the shelf life and storage requirement?
A: When stored in sealed containers at ≤25°C away from light and moisture, our product maintains potency for 24 months. We recommend nitrogen flushing for ultra-high purity grades (98%) to prevent oxidation.
Q: Do you support small-batch custom extractions?
A: Yes. Our minimum order quantity starts at 25kg for standard specifications, but we accommodate R&D quantities as low as 5kg for custom ratios or novel formulations during your product development phase.

Partner With a Trusted Botanical Extract Leader
You're not just getting an element; you're also getting a partner who wants you to succeed. With our botanical knowledge, World-Way has helped hundreds of brands make winning goods since 1992.
Prof. Zeng, our founder and a candidate for Academician of the Chinese Academy of Sciences, set quality standards that are now used across the whole industry. This scientific rigour, along with our modern production infrastructure and global logistics network, makes sure that you get a product that always works in the ways you need it to.
Our regulatory support team can help you with paperwork that is specific to the markets you want to reach, whether you're releasing anti-aging supplements in North America, heart health products in Europe, or cosmetics in Asia.
Ready to Elevate Your Formulations?
Let's discuss how our premium Giant Knotweed Rhizoma Extract can differentiate your products in competitive markets. Contact our technical specialists at info@world-way.net for samples, custom quotations, or formulation consultations.
Standard Disclaimer (DSHEA):
These statements have not been evaluated by the Food and Drug Administration.
This product is not intended to diagnose, treat, cure, or prevent any disease.
Sample Disclaimer:
The samples provided are for evaluation and testing purposes only. They are not for commercial sale, human consumption, or medical use. Recipients must conduct their own testing to verify product suitability for their intended application.
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