Herbal Extracts
Resveratrol Powder
Botanical Source: Polygonum Cuspidatum
Specification: 50% 98%
Appearance: White Fine powder
Used Part: Root
Test Method: HPLC
Molecular Formula: C14H12O3
Molecular Weight: 228.24300
CAS No.: 501-36-0
MOQ: 1 kg
Sample: 20 g
Packing: 1 kg in aluminum foil bag; 25 kg in fibre drum
Delivery: FedEx, DHL, air shipment, sea shipment
Certifications: ISO, HACCP, KOSHER, HALAL, BRC
Features:
Non-irradiated
GMO-free, allergen-free, TSE/BSE-free
Not treated with ETO during production, storage, or transportation
Product Description
Reliable Resveratrol Powder Manufacturer & Bulk Supplier
Greenherb operates a controlled extraction facility specializing in Resveratrol Powder. We source Polygonum cuspidatumroots from contracted growing plots, using low-temperature ethanol extraction and recrystallization purification to concentrate trans-resveratrol while controlling cis-isomer conversion. Full export documentation and third-party testing are provided with every batch.
Why Choose Greenherb Resveratrol Powder
- Standardized Trans-Resveratrol Potency – We calibrate trans-resveratrol levels per batch, with customizable assay at 50% and 98% for resveratrol powder supplement formulation lines requiring verified marker density.
- Root-Only Sourcing – Polygonum cuspidatumrhizome material delivers higher native resveratrol content than grape-skin sidestreams, supporting stable bulk pricing.
- Low-Temp Extraction – Sub-50°C ethanol process protects heat-sensitive trans-isomer from converting to cis-resveratrol during processing.
- Recrystallization Purification – Multi-pass recrystallization strips plant pigments and concentrates active content to 98% grade when specified.
- Solvent Residue Compliance – Post-processing solvent checks meet ICH Q3C for global supplement imports.
- Heavy Metal & Pesticide Screening – Multi-point ICP-MS and GC-MS testing ensures compliance with EU/US food-grade standards.
- Mesh Customization – Default 80 mesh, adjustable up to 120 mesh for capsule/tablet line flow optimization.
- Direct Factory Pricing – Transparent quotes for trial batches to full container loads, no distributor markup.
Certificate of Analysis
| Assay | Specification | Test result |
| Trans-resveratrol | ≥98.0% | 98.11%(HPLC) |
| Emodin | ≤0.5% | Conforms(HPLC) |
| Physical Control | ||
| Appearance | White to off white powder | Conforms |
| Odor | Characteristic | Conforms |
| Taste | Characteristic | Conforms |
| Part Used | Root | Conforms |
| Moister | ≤3.0% | 3.03% |
| Ash | ≤0.5% | 3.21% |
| Particle size | 95% pass 60 mesh | Conforms |
| Chemical Control | ||
| Heavy Metals | NMT10ppm | Conforms |
| Lead(Pb) | NMT2ppm | Conforms |
| Arsenic (As) | NMT1ppm | Conforms |
| Mercury(Hg) | NMT0.1ppm | Conforms |
| Cadmium(Cd) | NMT1ppm | Conforms |
| GMO Status | GMO Free | Conforms |
| Microbiological Control | ||
| Total Plate Count | 10,000cfu/g Max | Conforms |
| Yeast & Mold | 1,000cfu/g Max | Conforms |
| E.Coli | Negative | Negative |
| Salmonella | Negative | Negative |
Product Introduction
Resveratrol Powder is a concentrated botanical extract derived from the roots and rhizomes of Polygonum cuspidatum. Unlike physically ground crude material, this extract isolates and enriches trans-resveratrol via controlled low-temperature solvent extraction and optional recrystallization, delivering a standardized raw material for nutraceutical manufacturers requiring batch-to-batch consistency on the trans-isomer marker.
Production Process
Greenherb follows a controlled extraction workflow:
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Root Sourcing – Polygonum cuspidatumrhizomes harvested at optimal maturity, cleaned and sorted to remove foreign matter.
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Crushing – Uniform grinding to optimize extraction surface area.
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Low-Temp Ethanol Extraction – Targeted solvent extraction to isolate resveratrol and companion stilbenes.
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Purification – Macroporous resin and/or recrystallization steps strip pigments and concentrate trans-resveratrol.
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Vacuum Concentration – Solvent recovery under reduced pressure to produce extract paste.
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Spray/ Vacuum Drying – Dried to free-flowing crystalline or powdered form depending on target assay.
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QC Release – Test trans-resveratrol (HPLC), heavy metals, pesticides, microbiology per batch.
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Packaging – Double PE inner + desiccant, nitrogen-flush sealed in fiber drums; 98% grade vacuum-packed for light sensitivity.
Functional Properties & Benefits
As a standardized botanical extract, it offers formulation advantages:
- Verified Trans-Isomer – Assay locked on trans-resveratrol via HPLC, not total resveratrol lump sum.
- Grade Flexibility – 50% for blended nutraceutical bases, 98% for premium single-marker SKUs.
- Light-Sensitive Handling – 98% grade vacuum-packed and light-shielded to prevent isomer drift during storage.
- Clean Processing – Solvent residues within global limits, no irradiation or chemical preservatives.
Applications
Resveratrol Powder is engineered for formulation use:
- Nutraceutical Blends – Capsule/tablet fill, powdered antioxidant-themed SKUs for dietary supplement lines.
- Functional Beverage Premixes – Carrier-adjusted grades available for ready-to-mix drink bases.
- Anti-Aging Private Label – Premium 98% grade positioned for beauty-from-within and longevity-themed SKUs.
- R&D Prototyping – Lab samples for formula testing and stability validation.
Contact Greenherb for Resveratrol Powder Supply
Greenherb supplies Resveratrol Powder with verified trans-resveratrol profiles, backed by comprehensive third-party testing. We accommodate both trial and commercial volumes for bulk resveratrol powder orders, with customized assay and mesh options available upon request.
For immediate assistance, contact our sourcing team directly.
Greenherb – Your Strategic Partner for Botanical Extracts and Nutraceutical Ingredients.
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