Pure Resveratrol Extract

Shaanxi Hongda Phytochemistry Co., Ltd. makes the best quality pure resveratrol extract

Why are global anti-aging, NAD+ activator, and high-end functional dermatology companies seeking a supply chain for pure resveratrol extract that is "all-trans, high-density, and solvent-free"? Shaanxi Hongda Phytochemistry Co., Ltd. is a professional Plant Extract manufacturer. We specialize in extracting high-quality pure resveratrol from Polygonum cuspidatum root and grape skins. We employ a "fully enclosed, oxygen-free, light-protected extraction + multi-stage special resin PAHs-specific interception + fluidized bed recombination granulation technology" to lock the purity of the effective bioactive all-trans resveratrol at over 98%, ensuring that every milligram possesses full endogenous anti-aging targeted activation efficiency. We also provide detailed Certificates of Analysis (COAs) for each batch of products for traceability.

Some of the best things about it include

• Pure trans-resveratrol: Greater than 98.0% (HPLC), eliminating cis conversion caused by heat and light exposure during production, ensuring that every milligram of feed has full endogenous anti-aging targeted activation efficiency.
• cis-resveratrol impurities: Less than 1.0% (HPLC peak area limit method control), strictly controlling the proportion of ineffective isomers, meeting the flawless quality audit of pure targeted nutrients by the international high-end functional medicine community.
• Polycyclic aromatic hydrocarbon limits (PAHs residue): Benzo[a] < 2.0 ppb / Total PAH4 < 10.0 ppb, 100% smoothly passing EU customs inspections and California Proposition 65 audits.
• Physical properties and rheological properties: Loose packing density greater than 0.45 g/ml / Tapped density greater than 0.60 g/ml, extremely uniform flow rate during high-speed hard capsule filling or direct tableting, mechanical yield increases by 30%. Quality Control: This product is manufactured in a factory that has passed GMP, ISO 22000, Kosher, and Halal certifications.
• Safety Guarantee: This product does not contain genetically modified ingredients and has passed heavy metal testing. After-sales warranty is provided; free returns are accepted for products that fail to meet quality standards.

If you want more information about specs, bulk orders, or samples, please email us at duke@hongdaherb.com.

Product Parameters

Resveratrol's triple-effect health support

- 🔬 Antioxidant: Polygonum cuspidatum extract resveratrol is stronger than ordinary supplements and can effectively remove free radicals (third-party verified)

- ⚡ Enhance cell vitality: Resveratrol extract can help mitochondria function normally and enhance cell energy

- ❤️ Cardiovascular companion: Help blood flow and maintain blood vessel elasticity.

Applications

1. Anti-Aging Capsules: These capsules have been shown in clinical studies to be strong enough to fight oxidative stress.
2. Heart health supplements: assist keep blood flow and cholesterol levels in check.
3. Skin Wellness Formulas: Protect against UV radiation and boost collagen formation.
4. Joint Support Blends: Help with stiffness and make it easier to move.
5. Private Label Brands: White-label with your branding for premium positioning.

Resveratrol Production Process

1. Selected Wild Polygonum cuspidatum Rhizomes from Their Origin: High-quality, high-glycoside-content Polygonum cuspidatum rhizomes are thoroughly cleaned and mechanically cleaned before being automatically sliced ​​and dried in a cool, well-ventilated area away from direct sunlight.

2. Multi-Stage, Closed-Loop, Countercurrent Ethanol Circulation Extraction and Coarse Separation of Macromolecular Cellulose: The dried Polygonum cuspidatum slices are placed in a fully enclosed, light-proof stainless steel extraction tank and subjected to multi-stage countercurrent temperature circulation extraction with 80% pharmaceutical-grade ethanol to maximize the dissolution of resveratrol and stilbene compounds such as polystyrene glycosides.

3. High-Efficiency Vacuum Falling Film Evaporation System for Continuous and Rapid Concentration, Distillation, and High-Concentration Aqueous Suspension Reconstitution: The extract is pumped into a double-effect continuous vacuum falling film evaporator, where the ethanol solvent is rapidly evaporated under low-temperature vacuum conditions without damaging the trans structure, converting it into a high-concentration aqueous slurry free of alcohol.

4. High-throughput industrial microporous membrane solid-liquid high-speed centrifugation separation and interception of high-melting-point Polygonum cuspidatum resin impurities: Utilizing the significant difference in solubility of materials in the aqueous phase, the concentrated slurry is passed through a high-speed horizontal screw centrifuge to remove insoluble coarse fibers and insoluble free plant resins.

5. Clarified filtrate gradient dynamic adsorption and directional retention of polycyclic aromatic hydrocarbons (PAHs) via a special macroporous adsorption resin column: The clarified liquid is slowly pumped into a super chromatography column packed with resin of customized pore size. Specific intermolecular forces allow for the strong adsorption of resveratrol, while PAH impurities are directly discharged and discarded from the bottom of the column.

6. Low-concentration high-purity ethanol dynamic gradient elution and precise retention and collection of high-purity resveratrol enrichment: Precise gradient elution of the resin column is performed using low-concentration pharmaceutical-grade ethanol in different ratios. The entire elution process is monitored online by absorbance, allowing for the precise retention and collection of the high-abundance resveratrol eluate.

7. Online sterile multi-stage cross-flow ultrafiltration membrane system for deep interception of macromolecular heavy metals and trace colloidal residues: The enriched solution passes through a two-stage high-pressure cross-flow ultrafiltration membrane array to intercept potentially entrained trace amounts of plant macromolecular tannins, residual pigment colloids, and trace inorganic heavy metal ions.

8. Light-proof vacuum forced circulation low-temperature recrystallization and chiral short columnar crystal morphology induction and growth control: The purified solution is introduced into a completely light-proof dedicated crystallization vessel. An inducing agent is added under constant temperature of 15℃ and specific stirring speed to control the crystal nucleus growth rate, causing it to grow into regular short columnar microcrystals.

9. Sealed explosion-proof three-in-one filter, washer, and dryer with anhydrous ethanol ice washing and rapid filtration and desliming: The crystallized suspension undergoes solid-liquid separation in a fully sealed explosion-proof "three-in-one" device, and a large amount of ice-cold anhydrous ethanol is sprayed online to wash away trace impurities adsorbed on the crystal surface.

10. Thorough drying in a fully nitrogen-filled, low-pressure, ambient-temperature vacuum fluidized bed and vacuum packaging with double-layer dark-colored light-blocking aluminum foil: The wet crystals are dried at room temperature in a low-pressure vacuum fluidized bed fully filled with high-purity nitrogen until the volatiles reach the pharmacopoeia limit, and then vacuum-sealed into drums using dark-colored light-blocking aluminum foil bags in a sterile cleanroom.

How We Redefine Quality Standards

Beyond Organic Certification
While many use harsh solvents, our patented subcritical CO2 extraction:

• 1. Zero Chemical Residues: Unlike ethanol-extracted alternatives
• 2. Full-Spectrum Preservation: Keeps synergistic co-factors in place
• 3. Eco-Friendly Production: Facilities fueled by solar energy that recycle water

[Resveratrol Crystals Under a Microscope](alt="High-purity Pure Resveratrol Extract crystals magnified 400x showing crystalline structure")  
*Actual photomicrograph of our batch #RV223 – no fillers or flow agents*

Your Safety Is Our Science

✅ Triple-tested for heavy metals, microorganisms, and potency in each batch. 
✅ Non-GMO Project Verified. 
✅ FDA-Registered Facility
No gluten, soy, or phony stuff

Reliable Global Supply

• 10,000+ kg of monthly capacity: scalable production with no supply chain delays.
• Quick shipping: JIT delivery is possible because there are warehouses in the US, EU, and Asia.
• Flexible Packaging: You can choose from barrels that hold 1 kg to 500 kg and have nitrogen flushing.

FAQ

Q: How do you know whether your Pure Resveratrol Extract is pure?
A: HPLC tests are done on every batch, and the results are written down in the CoA.

Q: Can I get samples before I place a large order?
A: Yes! If you ask for a free sample, it will be provided to you in three business days.

Q: Do you make custom formulas?
A: Yes, of course. We make the blends (such as those with curcumin) easier to dissolve, smaller, and better.

Q: Which types of licenses do you have?
A: The business follows the rules stipulated by ISO 9001, GMP, Halal, Kosher, and the FDA.

Q: How long will it last?
A: 24 months if the package is sealed and cleaned with nitrogen.

Ready to Elevate Your Formulations?

📧 Email: duke@hongdaherb.com

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