Buy Resveratrol Online | Premium KINTAI Plant Extract

Product Details

 1. Why Choose KINTAI When You Buy Resveratrol Powder?  

·Resveratrol Powder Chemical properties

Product Name	CAS Number	INCI Name
Resveratrol	501-36-0	RESVERATROL
Molecular Formula	Molecular Weight	Molecular Structure
C14H12O3	228.24g/mol
Product ID	Specificcation	Minimal Package	Minimal Order Quantity
PMB0501	98%	1KG	1KG
PMB0502	10% water-soluble Resveratrol

Resveratrol is a highly sought-after natural polyphenol compound that has gained significant attention in the nutraceutical, pharmaceutical, and cosmetic industries due to its remarkable antioxidant, anti-inflammatory, and anti-aging properties. At KINTAI, we specialize in producing premium-grade resveratrol extracted through an optimized process from Polygonum cuspidatum (Japanese knotweed or Hu Zhang), one of nature's richest botanical sources of this valuable compound. Unlike synthetic alternatives or lower-quality plant sources, our resveratrol is derived using a proprietary extraction technology that preserves the full spectrum of bioactive benefits while achieving exceptional purity levels of 98% or higher. This makes our resveratrol ideal for demanding applications in dietary supplements, anti-aging skincare formulations, and clinical research where potency and consistency are paramount.

·Resveratrol Powder Sources

The foundation of our superior resveratrol lies in its natural precursor, polydatin, a glycosylated form of resveratrol that serves as nature's storage mechanism in Polygonum cuspidatum roots. Polydatin offers several distinct advantages - its glycoside structure provides enhanced stability during extraction and greater bioavailability upon metabolic conversion in the human body. Our advanced bioconversion process utilizes enzymatic hydrolysis to carefully transform polydatin into highly pure trans-resveratrol, the most biologically active form. What truly sets KINTAI apart is our complete vertical integration - from sustainable cultivation partnerships with organic-certified Polygonum cuspidatum farms, through state-of-the-art extraction facilities employing green chemistry principles, to rigorous final product testing in our ISO accredited laboratories. Every batch is accompanied by comprehensive analytical documentation including HPLC purity profiles, heavy metal screening, and microbiological testing to ensure compliance with international pharmacopeia standards. When you choose to buy resveratrol from KINTAI, you're not just purchasing an ingredient - you're investing in a scientifically validated, fully traceable nutraceutical solution backed by our commitment to quality, innovation, and regulatory excellence across global markets.

Interested？We'd love to send you a free sample!

 2. The Science Behind Our Premium Resveratrol Extract

At KINTAI, we redefine quality in resveratrol production through a perfect marriage of pharmaceutical-grade science and nature's wisdom. Our resveratrol journey begins at the molecular level, where we've perfected a multi-stage bio-optimization process that sets new industry standards for purity and potency.

·Quality Certifications & Testing:

·Key Advantages:

▶ Industry-leading purity: 99.2% with guaranteed isomer integrity

▶ Clinically proven absorption: 8.3x bioavailability enhancement

▶ Market-ready stability: 3-year shelf life with potency guarantee

▶ Complete documentation: From raw material to finished product

 3.Kintai Resveratrol Manufacturer Flow Chart 

 4. The Purity and Potency of KINTAI Resveratrol ​​​​​​​

Our 50% resveratrol extract is specifically designed for manufacturers seeking a cost-effective yet high-quality solution for their formulations. This grade retains a significant amount of beneficial plant co-factors from Polygonum cuspidatum, including naturally occurring polyphenols and flavonoids that work synergistically with resveratrol to enhance its bioavailability and efficacy. The slightly lower purity makes it particularly suitable for general wellness supplements, functional foods, and cosmetic applications where a more holistic botanical profile is desired. We carefully control the extraction process to ensure consistent potency while maintaining these valuable complementary compounds.

· 98% Resveratrol Extract - Pharmaceutical-Grade Excellence

For applications demanding the highest purity standards, our 98% resveratrol extract represents the pinnacle of quality and performance. This pharmaceutical-grade material undergoes additional refinement steps to remove nearly all impurities, resulting in a product that meets the strictest requirements for clinical research and premium nutraceutical formulations. The ultra-high concentration ensures maximum active compound delivery per dose, making it ideal for therapeutic applications where precise dosing is critical. Our advanced purification technology preserves the integrity of the resveratrol molecules while achieving this exceptional purity level.

·Rigorous Quality Assurance for Both Grades

Both our 50% and 98% resveratrol extracts undergo identical, stringent quality control protocols to guarantee safety and efficacy. Each production batch is subjected to comprehensive analytical testing using HPLC, GC-MS, and other advanced techniques to verify purity levels and screen for potential contaminants. We test for heavy metals, pesticide residues, microbial content, and solvent residues to ensure compliance with global regulatory standards. These meticulous quality control measures are applied regardless of purity grade, demonstrating our commitment to consistent excellence across all our product offerings.

· Application-Specific Performance Characteristics

The choice between 50% and 98% purity depends largely on your specific application requirements. Our technical team can provide detailed guidance on selecting the optimal grade for your formulation needs. The 98% grade is particularly effective for applications requiring high-dose delivery systems, while the 50% grade offers advantages in products where the natural botanical profile is desirable. Both grades are available in various physical forms including fine powders and liquid suspensions, with customizable particle sizes and solubility characteristics to meet diverse manufacturing requirements.

·Complete Transparency and Documentation

Every shipment of KINTAI resveratrol, regardless of purity grade, comes with comprehensive documentation including Certificates of Analysis that detail all quality parameters. Our batch-specific reporting includes complete chromatographic profiles, heavy metal screening results, and microbiological testing data. This level of transparency ensures you have all the information needed for regulatory compliance and quality assurance in your own production processes. Our technical support team is always available to help interpret these reports and provide additional analytical data as required.

 5. How to Buy Resveratrol in Bulk for Your Business 

If you're looking to buy resveratrol powder in bulk for your supplement, cosmetic, or pharmaceutical business, KINTAI makes the purchasing process simple and reliable. Here's your complete guide to resveratrol purchase with confidence.

·Where Can I Buy Resveratrol? Choosing the Right Supplier

When deciding where to buy resveratrol, prioritize suppliers with verified credentials. KINTAI offers 98% and 50% pure resveratrol extract, backed by GMP, ISO, and FDA compliance. Our third-party lab testing (HPLC, GC-MS) ensures every batch meets strict quality standards.

·Resveratrol Purchase: Selecting the Best Form & Purity

Resveratrol powder (98% purity) – Ideal for high-potency supplements and clinical research.

50% resveratrol extract – Perfect for cost-effective formulations with natural co-factors.

Water-soluble & nanoemulsified options – Enhanced bioavailability for premium products.

·Buy Resveratrol Powder in Bulk: Ordering Process Made Easy

Request free samples to test quality before committing to large orders.

Choose your quantity – From 1kg samples to multi-ton shipments, with volume discounts.

Flexible MOQs – Suitable for startups and large-scale manufacturers.

·Fast & Reliable Resveratrol Purchase Logistics

Global shipping (DDP available) – Hassle-free delivery to your facility.

Cold-chain packaging – Ensures stability for sensitive formulations.

Private label & OEM services – Custom branding options available.

·Why Businesses Choose KINTAI for Bulk Resveratrol

✔ Competitive bulk pricing – Save on large orders.

✔ Full regulatory documentation – Ready for global markets.

✔ Dedicated support team – Formulation & sourcing assistance.

Interested？We'd love to send you a free Sample!

 6. Resveratrol Health Benefits 

Resveratrol's multifaceted benefits address key health concerns across supplement, functional food, and cosmetic markets. Below we present clinically validated benefits alongside industry data to guide your product development.

·Antioxidant & Anti-Aging Powerhouse

Industry Challenge:

72% of supplement users seek anti-aging solutions (NBJ 2023)

Synthetic antioxidants face consumer skepticism

Resveratrol Solution:

Formulation Tip: Combine with vitamin C for synergistic antioxidant protection in skincare blends.

·Cardiovascular Support

Market Opportunity:

Global heart health supplements market to reach $13.2B by 2027 (Grand View Research)

45% of adults have borderline high cholesterol (CDC)

Clinically Demonstrated Effects:

Product Positioning:

"Heart-healthy" functional beverages

Cholesterol management stacks with plant sterols

·Metabolic Health & Blood Sugar Control

Consumer Pain Points:

1 in 3 adults has prediabetes (CDC)

62% of weight management shoppers want blood sugar support (SPINS)

Resveratrol's Dual Action:

Clinical Note: 250-500mg/day shows significant HbA1c reduction in human trials (Diabetes Care).

·Cognitive Protection

Market Growth:

Brain health supplements growing at 8.9% CAGR (2023-2030)

87% of seniors worry about memory decline (AARP)

Neuroprotective Effects:

Synergy Suggestion: Combine with omega-3s for enhanced blood-brain barrier penetration.

 7. Buy Resveratrol with Confidence from KINTAI 

·Premium Resveratrol Specifications – Purity & Versatility

We supply high-purity resveratrol extracts tailored to diverse industry needs:

Standard Grades: 50% – 98% purity (plant-derived Polygonum cuspidatum or Japanese knotweed).

Ultra-Pure Options: 99%+ resveratrol for pharmaceutical/nutraceutical applications.

Multiple Formats: Powder, liquid, and custom blends (water-soluble variants available).

Non-GMO & Allergen-Free: No artificial additives or solvents.

Unlike generic suppliers, we offer batch-specific COAs (Certificates of Analysis) with detailed HPLC/GC-MS reports for traceability.

·Certified Quality & International Compliance

KINTAI’s resveratrol meets stringent global standards, backed by:

ISO 9001: Certified quality management system.

FDA & cGMP: Compliant manufacturing for food, cosmetic, and supplement use.

EU & USDA Organic: Select batches available for organic formulations.

Halal/Kosher: Upon request for specialized markets.

Many competitors lack full certification transparency—we provide documentation upfront.

·Competitive Edge: From Lab to Market

Vertical Integration: Control over sourcing, extraction, and testing ensures consistency.

B2B Flexibility: Bulk quantities (1kg to ton-scale) with OEM/private label services.

Global Logistics: Fast shipping with DDP (Delivered Duty Paid) options for hassle-free import.

Interested? We'd love to send you a free Sample!

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Q1: What Is Resveratrol, And Where Does Kintai's Resveratrol Come From?

Resveratrol is a natural polyphenol found in certain plants, most notably in the skin of red grapes, Japanese knotweed (Polygonum cuspidatum), and some berries. KINTAI's resveratrol is primarily sourced from high-quality Japanese knotweed extract, ensuring a potent and pure form of trans-resveratrol, the most bioavailable active isomer.

Q2: What Is The Difference Between "resveratrol" And "trans-resveratrol"?

Resveratrol exists in two forms: cis-resveratrol and trans-resveratrol. Trans-resveratrol is the biologically active and most beneficial form, which is why KINTAI focuses on extracting and standardizing our product for high purity trans-resveratrol content. When you buy resveratrol from KINTAI, you're getting the effective form.

Q3: How Can I Be Sure Of The Quality And Purity When I Buy Resveratrol From Kintai?

Quality is KINTAI's top priority. We implement stringent Quality Control (QC) and Quality Assurance (QA) protocols at every stage, from raw material sourcing to final product. Our resveratrol undergoes rigorous testing for purity, potency, heavy metals, pesticides, and microbial contaminants. We provide Certificates of Analysis (CoAs) with every batch to verify its quality and ensure you're getting a premium product when you buy resveratrol from us.

Q4: Is Kintai's Resveratrol Suitable For Different Applications (e.g., Supplements, Cosmetics, Food)?

Yes, our high-purity resveratrol is versatile and suitable for a wide range of applications. It's commonly used in dietary supplements, anti-aging cosmetic formulations, and functional foods and beverages. We can discuss your specific application needs to ensure you buy resveratrol that meets your requirements.

Q5: Do You Offer Bulk Purchasing Options For Resveratrol?

Absolutely! KINTAI specializes in supplying high-quality bulk resveratrol to businesses worldwide. We offer various quantities to meet your production needs. Please contact our sales team directly for detailed pricing, minimum order quantities (MOQs), and lead times for bulk resveratrol purchases.

Q6: What Certifications Does Kintai Hold For Its Manufacturing Processes?

KINTAI adheres to international quality standards. We operate under ISO-certified facilities and follow Good Manufacturing Practices (GMP) guidelines. Our commitment to these standards ensures consistency, traceability, and the highest quality product every time you buy resveratrol from us.

Q7: How Should Kintai Resveratrol Be Stored?

To maintain its stability and potency, KINTAI resveratrol should be stored in a cool, dry place, away from direct sunlight and moisture. Keeping it in its original sealed container is recommended until use. Proper storage helps ensure the integrity of the product you buy resveratrol.

About Us

 OEM and ODM Services 

KINTAI is a professional pro-xylane manufacturer and supplier. We offer OEM and ODM administrations to take care of the particular necessities and prerequisites of our clients. Our group of specialists can foster modified items and offer coordinated support arrangements.

 Our Certifications 

 KINTAI Advantages 

 Parcel and Shipping 

1> 1KG/bag, 10KG/carton,25kg/drum
2> By Express: Door to door; DHL/FEDEX/EMS; 3-4DAYS; Suitable for under 50kg; high cost; easy to pick up the goods
3> By Air: Airport to Airport; 4-5 days; Suitable for more than 50kg; high cost;professional broker needed
4> By Sea: Port to Port; 15-30days; Suitable for more than 500kg; Low cost; professional broker needed

Please contact KINTAI at info@kintaibio.com for your resveratrol Powder needs. We look forward to serving you!