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Japanese Knotweed Extract

Latin name:
Polygonum cuspidatum
• 10%~98% Resveratrol (HPLC)
Part Used:
• The roots ofPolygonum cuspidatum
• cGMP, ISO22000, HACCP, FSSC22000, Kosher, Halal

1. Description of Giant Knotweed Root Extract

Japanese knotweed Extract is the dried roots extract of Polygonum cuspidatum. It is a free flowing powder with characteristic aroma and taste. Widely used in pharmaceutical, health care products, food additives, functional drinks, cosmetics fields. 

Resveratrol is a non-flavonoid polyphenol organic compound. It is an antitoxin produced by many plants when stimulated. The chemical formula is C14H12O3. It can be extracted from Polygonum cuspidatum and grape skins. It is the bioactive ingredient in Polygonum cuspidatum and grape skins. It is easily absorbed by oral administration and excreted in urine and feces after metabolism. Resveratrol has antioxidant, anti-inflammatory, anticancer and cardiovascular protective effects. Resveratrol was first discovered in 1924 and was first isolated from the roots of Veratrum grandiflorum (grandiflorum) by the Japanese in 1940. Res has been found in more than 700 species of plants, including 72 species in 31 genera and 12 families, among which the content of RES is higher in grape, Polygonum cuspidatum.

The pure product of resveratrol is white to pale yellow powder, odorless, insoluble in water, easily soluble in ether, trichloromethane, methanol, ethanol, acetone, ethyl acetate and other organic solvents, melting point 253 ~ 255℃, sublimation temperature 261℃. Resveratrol can show red color with alkaline solution such as ammonia, and can react with ferric chloride and potassium ferriccyanide. This property can be used to identify resveratrol.

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