Polygonum Cuspidatum Extract | Natural Resveratrol Supplier & OEM Factory
Bulk Supply | OEM & ODM Manufacturer | High-Purity Plant Extracts | AIHerba®
1. Product Overview
Product Name: Polygonum Cuspidatum Extract
Botanical Name: Polygonum cuspidatum Sieb. et Zucc.
Active Ingredient: Resveratrol (≥50%, 98%)
Other Components: Emodin, Polydatin, Anthraquinones
Appearance: Brown to white fine powder (depending on purity)
Part Used: Root
CAS No.: 501-36-0
Test Method: HPLC
Manufacturer: AIHerba® | Shaanxi Zhonghong Investment Technology Co., Ltd.
Certifications: GMP, ISO9001, ISO22000, HACCP, HALAL, KOSHER
Polygonum Cuspidatum Extract, commonly known as Japanese Knotweed Extract, is a rich natural source of trans-resveratrol—a potent antioxidant widely used in cosmetics, pharmaceuticals, and dietary supplements for anti-aging, cardiovascular protection, and inflammation control.
2. Origin & Production
AIHerba® sources Polygonum Cuspidatum roots from high-altitude areas of Shaanxi and Sichuan, China, ensuring sustainable and pesticide-free raw materials.
Extraction is carried out using water–ethanol extraction and low-temperature vacuum concentration to preserve bioactive integrity.
Production Process Flow
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Raw material cleaning & slicing
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Water–ethanol extraction
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Filtration & concentration
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Solvent recovery
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Chromatographic purification
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Spray drying or vacuum drying
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Quality control & standardization
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Packaging under GMP environment
3. Specifications & COA Summary
| Item | Specification | Test Method |
|---|---|---|
| Appearance | Brown or white fine powder | Visual |
| Odor | Characteristic | Organoleptic |
| Assay (Resveratrol) | ≥50% / 98% | HPLC |
| Loss on Drying | ≤5.0% | AOAC 925.10 |
| Ash | ≤3.0% | AOAC 923.03 |
Pesticide Residue Test
| Item | Limit (mg/kg) | Test Method |
|---|---|---|
| Organochlorine pesticides (DDT, BHC) | <0.1 | GC-MS |
| Organophosphorus pesticides | <0.1 | GC-MS |
| Carbamates | <0.1 | LC-MS/MS |
| Pyrethroids | <0.1 | GC-MS |
Heavy Metals
| Item | Limit (ppm) | Test Method |
|---|---|---|
| Lead (Pb) | ≤3.0 | ICP-MS |
| Arsenic (As) | ≤2.0 | ICP-MS |
| Cadmium (Cd) | ≤1.0 | ICP-MS |
| Mercury (Hg) | ≤0.1 | ICP-MS |
Microbiological Test
| Item | Limit | Test Method |
|---|---|---|
| Total Plate Count | ≤1,000 cfu/g | USP <61> |
| Yeast & Mold | ≤100 cfu/g | USP <61> |
| E. coli | Negative | USP <62> |
| Salmonella | Negative | USP <62> |
| Staphylococcus aureus | Negative | USP <62> |
4. Health Benefits & Mechanisms
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Antioxidant & Anti-aging – Neutralizes free radicals, supports cellular repair, and promotes longevity.
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Cardiovascular Health – Improves blood circulation and protects against oxidative stress in arteries.
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Anti-inflammatory Effects – Modulates cytokines and reduces inflammation pathways.
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Neuroprotective Support – May enhance cognitive function and delay neurodegenerative processes.
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Skin Health – Resveratrol promotes collagen synthesis and reduces UV-induced skin damage.
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Metabolic Regulation – Supports healthy glucose metabolism and weight management.
5. Traditional Applications
In Traditional Chinese Medicine (TCM), Polygonum Cuspidatum (Hu Zhang) has been used for:
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Clearing heat and detoxifying the body
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Promoting blood circulation
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Treating liver disorders and inflammation
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Healing wounds and insect bites
6. Application & Dosage Guidelines
| Application Field | Recommended Use Level | Formulation Examples |
|---|---|---|
| Dietary Supplements | 50–500 mg/day | Capsules, Tablets |
| Functional Foods | 0.1–1% | Beverages, Nutritional Bars |
| Cosmetics | 0.1–0.5% | Anti-aging creams, Serums |
| Pharmaceuticals | As per formulation | Cardiovascular, Anti-inflammatory products |
Best Formulation Synergies:
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Combine with Vitamin C, Coenzyme Q10, or Hyaluronic Acid for anti-aging.
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Blend with Green Tea Extract for enhanced antioxidant potency.
7. Storage & Shelf Life
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Storage: Keep in a cool, dry, and dark place (below 25°C).
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Shelf Life: 24 months from date of manufacture when properly sealed.
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Packaging: 1kg/aluminum foil bag; 25kg/drum (customizable).
8. Logistics & Ordering Information
| Item | Details |
|---|---|
| MOQ | 1 kg |
| Sample Policy | Free 20–50g sample available |
| Lead Time | 3–5 working days for sample; 7–15 days for bulk |
| Shipping Options | DHL, FedEx, UPS, air, or sea freight |
| Customization | OEM/ODM formula support & private labeling available |
9. Applicable Industries & Use Cases
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Nutraceuticals: Anti-aging, cardiovascular, antioxidant formulations
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Cosmetics: Skin whitening, anti-aging, sun-protection products
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Pharmaceuticals: Anti-inflammatory and liver protection agents
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Food & Beverage: Functional drinks, antioxidant gummies
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Animal Health: Antioxidant and immune-support formulations
10. Quality, Expertise & Certifications
✅ Factory Experience: Over 28 years of R&D and manufacturing experience
✅ Certifications: GMP, ISO9001, HACCP, HALAL, KOSHER
✅ Analytical Reports: HPLC, ICP-MS, Microbial test data available
✅ Quality Control: In-house lab + Third-party testing (SGS, Eurofins, CNAS)
✅ Sustainability: Eco-friendly extraction, traceable supply chain
11. Frequently Asked Questions (FAQ)
Q1: Is AIHerba’s Polygonum Cuspidatum Extract natural or synthetic?
A1: 100% natural plant extract, derived from Polygonum cuspidatum roots via water–ethanol extraction.
Q2: Can I get a COA and MSDS before purchase?
A2: Yes, full COA, MSDS, and third-party test reports are provided upon request.
Q3: What’s the difference between 50% and 98% resveratrol content?
A3: 50% extract is brown and suitable for food & supplements; 98% is white crystalline powder for premium formulations.
Q4: Do you support customized formulations?
A4: Yes. AIHerba provides OEM/ODM solutions for capsules, tablets, beverages, and skincare applications.
Q5: How is purity and stability ensured?
A5: Controlled drying temperature (<60°C) and HPLC verification ensure high purity and stability.
12. References
13. Contact Us
AIHerba® | Shaanxi Zhonghong Investment Technology Co., Ltd.
📍 Address: Xi’an, Shaanxi, China
📧 Email: sales@aiherba.com | info@aiherba.com | liaodaohai@gmail.com
🌐 Website: www.aiherba.com
