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Xi'an Natural Field Bio-Technique Co., Ltd.

Giant Knotweed, Resveratrol Powder, 501-36-0 manufacturer / supplier in China, offering Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol, Best Quality Herbal Extract Giant Knotweed 98% Resveratrol, Panax Ginseng Extract for Supplements / Functional Foods and so on.

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Supplier Homepage Product Standardized extract Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol

Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol

FOB Price: US $100-400 / kg
Min. Order: 25 kg
Min. Order FOB Price
25 kg US $100-400/ kg
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Port: Guangzhou, China
Production Capacity: 5000kg
Payment Terms: L/C, T/T, Western Union, Money Gram

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Basic Info
  • Model NO.: NF-015
  • Assay Method: HPLC
  • State: Powder
  • Product Name: Giant Knotweed Extract
  • Test Method: HPLC
  • Used Part: Root
  • CAS No.: 501-36-0
  • Transport Package: 1kg/Bag. 25kg/Drum
  • HS Code: 2914690000
  • Certification: ISO, FDA, HACCP
  • Application: Food, Health Care Products
  • Extract Source: Giant Knotweed
  • Active Ingredient: Resveratrol,Polydatin
  • Appearance: White Powder
  • Odor &Taste: Characteristic
  • Trademark: Natural field
  • Specification: 98%
Product Description
Natural plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol

Product Code: NF-015
Botanical Source: Giant Knotweed Extract 
Active ingredient:Resveratrol,Polydatin
Specification:  Resveratrol : 98%,99% by HPLC
            Polydatin : 50%, 98% by HPLC
What is Giant Knotweed Extract ?
Giant knotweed is one of polygonaceae plants, and its native to east Asia and widely distributed in China. Giant knotweed in China and Japan in traditional medicine used to treat a variety of ailments, including fungal infection, a variety of skin inflammation, cardiovascular diseases and liver diseases and so on. Resveratrol and emodin is the main functional Ingredient in the giant knotweed.
Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol                  Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol

Product NameGiant Knotweed Extract
Active IngredientResveratrol,Polydatin
Test MethodHPLC
AppearanceWhite powder
Used PartRoot
Odor &TasteCharacteristic
ResveratrolCAS NO.501-36-0
Molecular FormulaC14H12O3
Molecular Weight 228.24
PolydatinCAS NO.65914-17-2
Molecular FormulaC20H22O8
Molecular Weight 390.38
Physical Characteristics
Sieve Analysis.NLT 100% pass 80 mesh
Loss on Drying4.0%
Ash Content 2.0%
Residual Solvents
Total Heavy Metals20ppm
Pesticide Residues10ppb
Microbiological Assay
Total Plate Count1000cfu/g
Total Yeast & Mold100cfu/g
1. Giant knotweed extract resveratrol powder can prevent heart disease; 
2. Giant knotweed extract resveratrol powder has the function of anti-cancer;
3. Giant knotweed extract resveratrol powder used to nourish and protect liver;
4. Giant knotweed extract resveratrol powder is anti-oxidative and remove free radicals;
5. Giant knotweed extract resveratrol powder has good effects on cardiovascular system.
 Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol


Carton: 1kg, 2kg, 5kg /Aluminum Bag inside, or as customer's requirement;
Drum: 10kg,15kg,25kg, Food Grade PE bag inside

By Express1kg - 50kg
By Air50kg - 500kg
By SeaMore than 500kg
Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol

Payment terms:
Western Union
Bank Transfer
Credit card
Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol
Locating in the Xi'an High-tech industry development zone,Natural Field Bio-technique Co., Ltd is a high-tech enterprise,who aims at the production & export of the pharmaceutical intermediates,high-end chemicals and high purity herb ingredients.
2000m² manufacturing facility has become our strong guarantee for the production.


Q1: How to confirm the Product Quality before placing orders?
A: By sending you our available samples.
Or if you have special requirement on the goods, we can prepare samples according to your requirement for your confirmation.
Q2: Can you supply free samples?
A: Yes, we can provide some free sample, but the shipping cost should be on the customers' account. You can either pay the shipping cost or arrange a courier to collect the samples.
Q3: What's the MOQ?
A: For the high value product, our MOQ starts from 1g and generally starts from 10g.
For other low value product, our MOQ starts from 100g and 1kg.
Q4: Is there any discount?
A: Yes, for larger quantity, we always support with better price. 
Q5: How to place order and make payment?
A: You can send our your Purchase order(if your company has), or just send a simple confirmation by email or by TradeManager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q6: How do you treat quality complaint?
A: All our products are strictly tested by our QC, and confirmed by QA; unqualified material will not be released to customer. 
In case any quality problem is confirmed to be caused by us, we will replace the goods or refund your payment immediately.

Natural Plant Giant Knotweed Extract 50%, 98%, 99% Resveratrol

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