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Botanical namePolygonum cuspidatum Sieb. et Zucc.

Grade:Food Grade

Certificates: Kosher/ HALAL

Supply Ability:5 Tons/month

Sample: Free Sample 5-20g

Shelf Life:2 years

Storage:Store in cool and dry place

Package:1kg/bag, 25kg/paper drum

Delivery Method: DHL/ FedEx/ By air/ By sea

Payment MethodT/T, L/C, PayPal


Resveratrol Extract Powder Description

Resveratrol is a polyphenol compound, mainly derived from peanuts, grapes (red wine), knotweed, mulberry and other plants. Resveratrol is aResveratrol price-ruikeli kind of natural polyphenols with strong biological properties, also known as stilbene. It is a chemopreventive agent for tumors. It also reduces platelet aggregation, prevents and treats atherosclerosis, cardiovascular and cerebrovascular diseases. Chemical preventive agent.

RealclearBio also accept customization for Extract Ingredient, Content, Color, Solubility, Moisture, Ash, Heavy Metal, Pesticide Residue, Microorganism etc.

Product Description

Product Name:

Resveratrol Extract 

Botanical name:

Polygonum cuspidatum Sieb. et Zucc.


Off-White to White Powder

Part Used:



Resveratrol 50%, 98% 

Test Method:


Extraction Type:

Solvent Extraction





※Anti-tumor, Anti-cancer

Prevent cardiovascular disease


Dietary Supplements Health Care Products Food and Beverage Ingredients.  Cosmetics

Molecular Formula: C14H12O3Resveratrol buy-ruikeli

Molecular Mass: 228.24300

CAS No.: 501-36-0

Constitutional Formula:

Physical and chemical properties:

Resveratrol (3-4'-5-trihydroxystilbene) is a non-flavonoid polyphenol compound with a chemical name of 3,4', 5-trihydroxy-1, 2-distyrene (3,4', 5-triamcinolone), a molecular formula ofC14H12O3 with a molecular weight of 228.25. Resveratrol pure appearance is white to pale yellow powder, tasteless, insoluble in water, soluble in ether, trichloromethane, methanol, ethanol, acetone, ethyl acetate and other organic solvents, melting point 253 to 255 degrees C, sublimation temperature of 261 degrees C. Alkaline solutions such as ammonia can show red, and iron trichloride-potassium iron cyanide can be color-rendering reaction, the use of this property can identify resveratrol. 

Natural resveratrol has two structures, in nature mainly in the existence of trans-image, the two structures can be combined with glucose, forming a smooth and trans-resveratrol glycoside. Shun and trans resveratrol glycosides release resveratrol under the action of glycoside enzymes in the intestines. Trans resveratrol can be converted into a smooth isomer when exposed to ultraviolet light.

Resveratrol produces fluorescence under ultraviolet light of 366nm. Jeandet et al. determined the ultraviolet spectral properties of resveratrol and its infrared absorption peaks at 2800 to 3500cm (OH key) and 965cm (double-bond trans. Experiments have shown that trans resveratrol is stable even for a few months, except in high pH buffers, as long as light is completely isolated.  

Production process of Resveratrol Extract:

Solvent extraction-Solvent extraction is one of the most widely used extraction methods at home and abroad.

Commonly used solvent extraction methods mainly include three types: percolation method, leaching method and reflux method.

Common solvents for reflux extraction of resveratrol include methanol, ethanol, acetone, ethyl acetate, etc. Among them, 60% to 90% ethanol aqueous solution is the most commonly used to extract resveratrol from the original plant. Other solvents are low in efficiency or relatively toxic. Larger, so it is rarely used.

Testing Index of Resveratrol Extract

Particle Size:

NLT 100% 80mesh









Heavy metal:

10ppm max



Total Plate Count:

1000cfu/g max

Yeast / Mold:

100cfu/g max

E. Coli:




 Resveratrol Extract Package and Delivery

By Express

By Air

By Sea

Suitable for under 50kg

Suitable for more than 50kg

Suitable for more than 500kg

Fast: 3-7 days

Fast:  3-7 days

Slow: 7-45 days

Hight Cost

Hight Cost

Low Cost

Door to door service

Port to port

Port to port

Easy to pick up the goods

Professional broker needed

Professional broker needed

 Our advantage on producing Resveratrol Extract:

I. Raw material control for Polygonum cuspidatum:1) Select high quality raw materials.

2) Strictly control the quality of raw materials: inspection of bulk samples before entering the factory -- random inspection of batches at the time of entering the factory.Ensure no mildew, reasonable control of impurities, absolute content in a controlled range.

II. Production Control Resveratrol Extract:

 1) Whole pollution-free pipeline input to ensure that the production process is rigorous, clean and qualified for microorganisms.

2) To ensure complete, accurate and traceable sampling detection for each process in the production process.

3) Ensure that the whole process of powder collecting and packaging is completed in an orderly manner in the Cleaning Area without foreign body invasion.

Resveratrol cost-ruikeli

Resveratrol bulk-ruikeli

III. Quality Control for Resveratrol Extract:

1) Ensure the cleanness of the mixing program.

2) Ensure the accuracy of finished product testing.

3) If the finished products are not qualified, the previous process shall be traced immediately.

4) Guarantee that the unqualified products will not be put into storage or leave the factory.

Iv. Service Control

1) Guarantee 20-50 grams of free pre-shipment sample testing to customers.

2) Follow up the customer's detection of samples and problems found until the problems are solved.

3) Complete all customer requirements and related documents for products.

4) Customize product color, content, packaging, labeling and transportation according to customer requirements.

5) Customers' feedback on product problems shall be guaranteed to give positive and effective response within 24 hours.