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Giant Knotweed Extract - China

price: contact company for price

Original plant: Root of Polygonum cuspidatum Sieb. et Zucc.

Specification: 98%

Appearance: Almost white to white powder

Test Method: HPLC

Molecular Formula: C14H12O3

Molecular Weight: 228.25

ChemicalName: 3, 4', 5-trihydroxy-trans-stilbene;5-[(1E)-2-(4-hydroxyphenyl)ethenyl]-1, 3-benznediol

Melting Point: 253-255℃

CAS No.: 501-36-0

Solubility: Soluble in Ethanol and Propanol.

Description: Resveratrol is a naturally occurring phytoalexin produced by some higher plants in response to injury or fungal infection. Phytoalexins are chemical substances produced by plants as a defense against infection by pathogenic microorganisms, such as fungi. Resveratrol may also have alexin-like activity for humans. Epidemiological, in vitro and animal studies suggest that a high resveratrol intake is associated with a reduced incidence of cardiovascular disease, and a reduced risk for cancer.

Resveratrol is a natural anti-oxidants, it can inhibit tumor, also has the role of estrogen-like effect and can be used for the treatment of breast cancer and other diseases. Resveratrol can also be used for cosmetic, skin whitening, sunscreen and anti-UV, better stability.


2.Effect on cardiovascular system

3.Antibacterial and antifungal

4.Nourish and protect liver

5.Antioxidant and quench free-radicals

6.Impact on the metabolism of osseous issue

Packing: 25kg/Fibre drum with double plastic-bags inside。

Storage Condition: Sealed, kept in a shady & dry place。

Company Contact:

  • Phone: 073184681820608

  • Address: FL17, Unit 2, Block 1, Xiangteng City Plaza, No.43, Changsha, China

  • Email: Email

Published date: May 27, 2013 -

  • Business Description: Natural ex Inc., located in the west side of Xiang River in Changsha, is

    a professional manufacturer of botanical extracts and natural effective

    ingredients. We own a team which dedicated to the R&D, production and

    marketing of botanical extract since 1990s, also have advanced equipment

    and facilities which are used for the production of botanical extracts.

    In the past years, we researched and developed several hundred of

    producing technology of botanical extract, now our total annual

    production capacity of herbal raw material is about 5,000mt and we can

    supply more than 800mt botanical extracts each year.

    We have herbal raw material cultivation base and production base in Changde, Hunan, in which three modern production lines of botanical extract were established. Our major products include Huperzine A(Huperzia Serrata Extract), Resveratrol(Giant Knotweed Extract), Red Clover Extract, Limonin, Nomilin, Echinacea Purpurea Extract, Bilberry Extract, Ginkgo Biloba Extract, Ginseng Extract, Zeaxanthin, Horse Chestnut Extract, Epimedium extract, Reishi Mushroom Extract, Schisandra Extract, Astragalus polysaccharides, St.John s.Wort P.E., Citrus Aurantium Extract(Synephrine), etc, which mainly exported to United States, Europe, South East Asia, New Zealand, Australia and so on. All our products had met and/or exceeded our customers expectations.

    Natural ex Inc. established a R&D team which is headed by several Doctors and/or Masters in Phyto Chemistry, Pharmacology and Traditional Chinese medicines. Meanwhile, our R&D center are close cooperating with Hunan University of Traditional Medicine, Hunan Agriculture University, Hunan Engineering & Technology Research Center for Natural Products. The R&D center are equiped with modern analytical instrument such as HPLC, GC, AAS, UV, etc. All of this assure the reliable and stable quality of our products.

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