Latest Products
  • horny goat weed extract icariin
  • Echinacea extract
  • ginger extract
  • Siberian Ginseng Extract
  • Rosehip Extract
  • Salicin,white Willow Bark Extract
Contact Us
Giant Knotweed Extract

Giant Knotweed Extract

20%-98% Resveratrol(HPLC)


Giant Knotweed Extract

Giant knotweed extract is extracted from the roots or rhizomes of Polygonum cuspidatum Pdygoruim cxiu. Commercial extracts are usually standardized to contain resveratrol 20%, 50%, 80%, and 99%.

Because resveratrol glycosides in Giant knotweed is likely to be damaged during extraction ,

Therefore, the enzymatic hydrolysis is best method to get giant knotweed extract. After hydrolyzing the glycosides into resveratrol, the product yield can double. Practical method includes external and internal enzyme. The latter is carried with complex enzymes under certain temperature and pH conditions while the former is with existing enzyme in giant knotweed without addition therefore it is easy to operate and cost effective .

Excavate in spring or autumn, remove the fibrous roots, wash, cut into granule or slice, and dry.

Product Specification:

English name:

Giant Knotweed Extract

Latin name:

Polygonum Cuspidatum Sieb

Active ingredients:


Part used:



Brown Yellow Powder




20% -98% Resveratrol

Test Method:


Function and Application:

Giant knotweed extract is widely used in medicine and personal care.

1.lowering blood lipids, increasing white blood cells, and used for biliary enzymes and hypertriglyceridemia;

2.Giant knotweed extract or Giant knotweed powder can be used for upper gastrointestinal bleeding.

3.Its anthraquinone or its preparations are used to treat acute and chronic hepatitis and leukopenia;

4.Its tannin is used for various burn wounds.

Giant knotweed extract is mainly used as a raw material for sore repair and beauty products.

Send Inquiry