Giant Knotweed Extract Trans-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
  • Trans-resveratrol
  • World-way

Quick Details

  • Type: Herbal Extract

  • Variety: Giant knotweed extract

  • Form: Powder

  • Part: Root and stem

  • Extraction Type: Solvent Extraction

  • Packaging: Drum

  • Place of Origin: Hunan, China (Mainland)

  • Grade: Pharmaceutical grade

  • Model Number: Giant knotweed extract

  • Latin name: Polygonum cuspidatum Sieb

  • Appearance: White fine powder

  • Taste & odor: Characteristic

  • Active ingredient: Trans- resveratrol from giant knotweed extract

  • Specification: 98% Trans- resveratrol

  • Test method: HPLC

  • Main function: Anti-oxidant Anti-cancer Anti-atherosclerosis

  • Extract solvent: Ethanol and water

  • Free sample: 50g giant knotweed extract

  • Shelf life: 2 years


Packaging & Delivery

Packaging Details:

25kg/drum with double plastic bag or fresco bag inside or      customized

Delivery Detail:

3~5 days after order confirmation


 Product details 

Product name

Giant knotweed extract

Latin name 

Polygonum cuspidatum Sieb

Active ingredient

Trans- resveratrol


98% Trans- resveratrol

Test method  


Particle size

100% pass 80 mesh 

Loss on drying 




Heavy metal 


Lead (Pb)








Total plate count 


Yeast & Mold 






Pesticides Residues 

Conform to USP 

Solvent Residues

Conform to USP 

Non-irradiation statement

This ingredient is not treated by irradiation and ETO

Kosher status 

Kosher KOF-K Parve

Shelf life  

2 years 


Functions of Giant knotweed extract


1. Natural anti-oxidant to eliminate free radicals and, anti-aging 




3.Treat coronary heart disease, ischemic heart disease and Hyperlipidemia 



Packaging & Shipping



25kg/drum and in paper-drum (D35cm*H51cm)      and polyethylene bag inside


Store in cool & dry place, stay away      from strong direct light and heat.


Lead time 

3~5 days after order confirmation

Delivery details 

For urgent order and light weight,       choose the following express: UPS, FedEx, DHL, EMS. 

For heavy weight,      choose to deliver the goods by air or by sea to save cost.




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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.
Copyright © 2021 World-Way Biotech Inc. Technical support : leadong