Giant Knotweed Extract Resveratrol

Giant Knotweed Extract is extracted from Polygonum Cuspidatum Sieb
by ethanol and water.
Latin name: Polygonum cuspidatum Sieb
Type: Herbal Extract
Variety: Giant knotweed extract
Part: Root and stem
Extraction Type: Solvent Extraction
Grade: Pharmaceutical grade
Model Number: Giant knotweed extract
Appearance: White fine powder
Active ingredient: Trans- resveratrol from giant knotweed extract
Specification: 98% Trans- resveratrol
Test method: HPLC
Main function: Anti-oxidant Anti-cancer Anti-atherosclerosis
Free sample: 50g giant knotweed extract
Shelf life: 2 years
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  • Trans-resveratrol

  • World-way

Powerful Natural Giant Knotweed Extract With Cancer Inhibitor


The main active ingredients is trans-resveratrol (3,5,4'-trihydroxy-trans-stilbene), it is a powerful antioxidant produced by some plants to protect them against environmental stresses.

Item Specification
Genus and Species Pohygonum cuspidatum Sieb .
Part of the Plant Root
Country of Origin China
Assay(Trans-resveratrol) >98.0%
Appearance Fine Powder
Color Off-white to light yellow
Solvent(s) Used Ethanol & Water
Melting point 253℃~255℃
Solubility Soluble in Alcohol
Particle Size (80 mesh) >98.0% pass 80mesh
Loss on drying <2.0%
Ash Content <1.0%
Solvent Residue Eur Pharm
Total Heavy Metals <10 ppm
As <2.0 ppm
Lead <2.0 ppm
Mercury <0.5 ppm


1.Functional food, drinks.
2.Health care products.
3.Resveratrol powder for pharmaceuticals.


1.Resveratrol antibacterial,antithrombotic,antiinflammatory and antianaphylaxis.
2.Resveratrol prevent cancer from happening and developing, have estrogen action, have obvious prophylaxis actions, especially tumor which depend on hormone.
3.Resveratrol antioxidation,delaying aging,preventing osteoporosis,acne(whelk) and dementia in the elderly.
4.Resveratrol lowering cholesterin and the blood viscosity, reducing the risk of arteriosclerosis, cardio-cerebrovascular disease and heart disease.
5.Resveratrol owning good efficacy for treatment of AIDS.


● Any inquiries will be replied with in 12 hours.
● Valued on quatity, supply & service.
● Strictly on selecting raw meterials.
● Reasonable & competitive price ,fast lead time.
● Flexible Payment Terms: L/C, T/T, DP, DA, OA


With ISO, FSSC, HALA, KOSHER, and Organic Certificate (NOP &ECO).


● First-class QA/QC and R&D assured by Dr. Gingko Zeng.
● Over 25-year experience in manufacturing and distributing Herbal extract to the international market.
● ISO,Organic,HACCP, Kosher, Halal certifications available.


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Product Inquiry
  • Q Do you manufacture all natural products?

    A Yes, we manufacture products with no artificial ingredients.
  • Q Can I have a sample ?

    A Sure, 20g-50g free sample is available for your testing.
  • Q Do you have a guarantee on your products?

    A We guarantee the goods produced is same as the samples confirmed by you, and strictly tested every item comply with CHP, EP or USP before shipping.
  • Q What is your delivery?

    A Normally the delivery is 7-10 working days
  • Q What do you produce?

    A We produce standardized herbal extract to ratio extract, such as Pesticide Free Ginseng Extract, Cocoa Polyphenols, Apple Phloridzin, Sweet Tea Extract, Resveratrol From Giant Knotweed Extract, Sorghum Extract, Dong Quai Extract, Milk Thistle Extract, Red Clover Extract, Echinacea Purpurea Extract, Magnolia Bark Extract etc
We look forward to working with you to develop cost effective products and long term relationships with mutual benefit.

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 Room 1706,1st Building Of Wankuntu, Changsha 410014, Hunan, China.
 +86-13974944225
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