Introduction: Understanding Polygonum Cuspidatum Extract
If you’re sourcing natural plant extracts for supplements, functional foods, or cosmetics, Polygonum Cuspidatum Extract—commonly known as Japanese Knotweed—deserves your attention. While it may be more familiar for its resveratrol content, this root extract offers a diverse profile of active compounds and a strong presence in the global herbal extract supply chain.
Introduction: Why Polygonum Cuspidatum Extract Matters for Industry Buyers
If your business deals with nutraceuticals, functional foods, or cosmetics, sourcing a reliable Polygonum Cuspidatum Extract (Japanese Knotweed Extract) can make all the difference. This extract is more than just a source of resveratrol—its roots contain a complex array of polyphenols and bioactive compounds, making it a versatile ingredient for industrial formulations.
For B2B buyers, understanding its chemical profile, applications, and sourcing standards is crucial to secure high-quality, reproducible extracts that meet both regulatory and manufacturing requirements.
Botanical Background and Active Compounds
Polygonum Cuspidatum, a robust perennial native to East Asia, is prized for its root extracts, which are rich in polyphenols and other bioactive molecules.
Key compounds include:
| Compound | Typical Content | Industrial Relevance | References |
|---|---|---|---|
| Resveratrol | 50–98% | Antioxidant-rich formulations, high-stability ingredient | PubMed |
| Polydatin (Piceid) | 5–20% | More stable, better bioavailability than pure resveratrol | PubMed |
| Emodin | 0.5–5% | Supports synergistic plant extract formulations | PubMed |
Why this matters for industrial buyers: Using full-spectrum Polygonum Cuspidatum Extract offers a synergistic effect, improving both product performance and stability, compared to isolated resveratrol.
Industrial Applications: Maximizing Market Opportunities
Understanding applications helps B2B buyers align sourcing decisions with end-market needs:
1. Nutraceuticals & Dietary Supplements
- Capsules, powders, and tablets
- Supports antioxidant-rich formulations
- Easy formulation with standardized extracts
2. Cosmetic & Personal Care Products
- Creams, serums, and anti-aging skincare
- High-stability resveratrol extracts ensure consistent product quality
- Used in natural and “clean beauty” lines
3. Functional Foods & Beverages
- Smoothies, health bars, and functional drinks
- Differentiates your brand in natural health product markets
4. Pharmaceutical & R&D Applications
- Standardized extracts for lab research and experimental formulations
- Reliable batch-to-batch consistency for testing and development
Commercial Note: B2B buyers prioritize standardization, traceability, and compliance over direct efficacy claims. Providing COA, HPLC reports, and GMP certification is essential.
Specifications, Quality Control & Supplier Selection
Key Parameters for Bulk Procurement:
| Parameter | Typical Range / Requirement |
|---|---|
| Resveratrol Content | 50–98% |
| Extraction Method | Ethanol / Water |
| Appearance | Fine, off-white to light brown powder |
| Moisture | ≤5% |
| Heavy Metals | Compliant with EU, FDA, ISO standards |
Supplier Evaluation Checklist:
- GMP/ISO-certified production facilities
- Batch COA and HPLC verification of active compounds
- Traceable sourcing from raw material to final extract
- Ability to provide customized specifications for industrial needs
Bulk Procurement Notes:
- MOQ: 1–5 kg samples; larger industrial orders available
- Packaging: Drum, vacuum-sealed, or customized per buyer request
- Shelf Life: 24–36 months under cool, dry storage
- Factory-direct sourcing ensures cost efficiency, quality control, and flexibility
Regulatory & Safety Considerations
- GRAS (Generally Recognized as Safe) in food applications FDA
- Compliant with EU Novel Food Regulations EFSA
- Standard precautions for sensitive populations (pregnant women, children, anticoagulant users)
- Content focuses on raw material and industrial applications—no medical claims made
FAQ – Polygonum Cuspidatum Extract for B2B Buyers
Q1: How does Polygonum Cuspidatum Extract differ from pure resveratrol?
A: The extract contains multiple compounds (resveratrol, polydatin, emodin), offering synergy and formulation ease. Pure resveratrol is a single molecule, less versatile for industrial use.
Q2: How can I verify extract quality?
A: Request HPLC reports, COA, and batch samples. Confirm GMP/ISO certification.
Q3: Which industries commonly use this extract?
A: Nutraceuticals, cosmetics, functional foods, beverages, and R&D labs.
Q4: What packaging options are available?
A: Vacuum-sealed drums, with customized packaging available for bulk orders.
Q5: What makes a supplier reliable?
A: Transparency in sourcing, standardized active content, COA provision, GMP compliance, and capacity for customized industrial specifications.
Q6: Can I request a free sample before placing a bulk order?
A: Yes, Aiherba offers free sample evaluation to verify quality before committing to bulk orders.
Trusted Supplier Spotlight: Aiherba
Aiherba provides:
- Factory-Direct Supply – cuts intermediaries and reduces costs
- Customized Specifications – tailored for dietary supplements, cosmetics, or functional foods
- Rigorous Quality Control – every batch tested for purity, potency, and compliance
- Free Samples – assess quality before bulk purchase
Contact:
Email: sales@aiherba.com | info@aiherba.com
Website: aiherba.com
References & Regulatory Links
- Resveratrol Pharmacology – PubMed
- Polydatin Studies – PubMed
- Emodin Research – PubMed
- FDA Food Ingredient Overview
- EU Novel Food Regulations – EFSA
- GMP Certification Reference – WHO
Realistic User Comment Examples
- ⭐⭐⭐⭐⭐ “Aiherba’s Polygonum Cuspidatum Extract was exactly as specified. High purity, reliable batch consistency, and fast delivery.” – Nutraceutical Formulation Manager
- ⭐⭐⭐⭐⭐ “The COA and HPLC reports were transparent, and our R&D team easily incorporated the extract into our formulations.” – Functional Food Developer
- ⭐⭐⭐⭐⭐ “Factory-direct supply made bulk sourcing cost-effective. Highly recommend for industrial buyers.” – Cosmetic Ingredient Procurement