Factory supply high quality pure natural polygonum cuspidatum extract resveratrol

We are a manufacturer of herb extract in China. was specificated in this line for 17 years. it's our key product.

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Product introduce:

Polygonum Cuspidatum P.E. (CAS No:501-36-0)

Latin Name :Polygonum cuspidatum Sieb.et Zucc.
Botanical Source: Polygonum cuspidatum Sieb.et Zucc.
Part Used :Stem&Root
Appearance: Light Brown or White Powder
Active Ingredient : Resveratrol
Specification: Resveratrol 5%-98%
Test Method: HPLC
Molecular Formula: C14H12O3
Molecular Weight:228.24

Product Description:
Resveratrol (trans-3,5,4'-trihydroxystilbene), belongs to a class of polyphenolic compounds called stilbenes , can inhibit the oxidation of low-density lipoprotein(LDL).

Testing index:
Loss on drying : 5% Max
Ash : 5% Max
Heavy metal : 10ppm Max
Pb: 2ppm Max
As: 1ppm Max

Microbiological Control :
Total Plate Count: <1000CFU/g
Yeast & Mold: <100CFU/g
E.Coli: Negative
Salmonella: Negative

Packaging:

Package: 1 kg/vacuum aluminum foil bag , 25 kgs/fiber drum or at customer’s request.

Storage: Store in a cool, dry place and keep away from direct strong light.

Shelf Life:2 years

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Why choose Shaanxi HongDa Phytochemistry Co.,Ltd.?

We have our own factory, 2 manufacturehouses.

Was specificated in this line of herb extractmanufacture for 20 years.

Professional technology, R&D team

Strict quality test system

17 years sales experience in Americas andEuropean, Southeast Asia, Middle East markets etc.

our Own US Warehouse in Ontario.

Shaanxi Hongda Phytochemistry Co., Ltd.