Polygonum Cuspidatum Extract

Polygonum Cuspidatum Extract

Botanical Source: Polygonum cuspidatum Sieb.et Zucc.

Part used: Root

Specification: Resveratrol 10%-98% HPLC

                      Polydatin 20%--98% HPLC
                      Emodin 50% ,80%,98%

                      Trans Resveratrol 99% HPLC

Botanical source:Polygonum cuspidatum Sieb.et Zucc.

Synonyms:Polygonum cuspidatum powder Japanese Knotweed Extract Resveratrol Polydatin Emodin Trans-Resveratrol

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Product Introduction
Appearance: Fine White Powder Particle Size: 80 Mesh
Loss on Drying: NMT 5%Ash Content: NMT 5%
Total Plate Count:<1,000cfu/gTotal Yeast & Mold:<100cfu/g
E. Coli:NegativeSalmonella:Negative

Heavy Metals
Arsenic (As): NMT 2ppmLead (Pb): NMT 1ppm
Cadmium (Cd): NMT 2ppmMercury(Hg): NMT 0.1ppm


Polygonum cuspidatum is used in traditional Chinese and Japanese medicine to treat a variety of ailments, including mold infections, various skin inflammations, cardiovascular and liver diseases.

Polygonum cuspidatum are the good source of resveratrol, and are used to produce standardized resveratrol extracts. Resveratrol is not only used to reduce platelet coagulation and tumor chemoprophylaxis, treat and prevent atherosclerosis, cardiovascular and cerebrovascular diseases, but also has a good anti-tumor effect. In cosmetic, with a purity of more than 95%, resveratrol has comprehensive whitening ability and effectively inhibits multiple genetic control points in the formation of melanin.

Polydatin, a natural resveratrol glycoside, is extracted from the root of Polygonum cuspidatum too. Research showed it has anti-inflammatory effects. And it also has inhibitory effect on staphylococcus aureus, catarrh, A or B streptococcus and Escherichia coli. It can be used as antioxidant for free radical clearance.

Emodin is also a main ingredient of Polygonum cuspidatum. Abroad, people use it as a laxative. Frangula Emodin (Emodin), a derivative of anthraquinone, has anti-inflammatory and anticancer effects. Reports shown that it is an anti-SARS-COV compound which can blocks the SARS coronavirus spike protein.

Anti-thrombotic effect,Preventing the arteriosclerosis
Preventing the cerebral ischemia
Shrink the contractile cell
Anti-oxidant effect
Resistancing UV radiation
Anti-aging and prolonging the cell life cycle
Anti-inflammation and enhancing immunity
Shipment Details
1. Packing: Packed in fiber drum, LDPE bag inside. Net weight: 25kgs/drum; 
2. Storage: Keep tightly sealed, store away from moisture, strong heat and sunlight;
3. Lead time: Usually 7-10days after order confirmed;
4. Shelf Life: 2 years if sealed and stored in the recommended conditions.