Qyherb is committed to extracting active ingredients from natural Chinese herbal medicines, among which Giant Knotweed Extract Powder is also one of the main production products. Qyherb can produce 98% of the products, and can also produce different specifications according to your needs. Giant Knotweed Extract Powder has great applications in food, functional food, dietary supplements, cosmetics, health care products and other fields.
Polygonum cuspidatum extract powder has achieved good results in animal husbandry as a new type of feed additive. Polygonum cuspidatum extract resveratrol will show great application value in the feed industry. Our products are also widely used in natural health food. It is also used in cosmetics.
Analytical Quality
Identification | Identical | TLC | |
Sieve | NLT 95% Through 80 mesh | Conforms | Mesh Screen |
Extract Solvent | Ethanol & Water | Conforms | |
Loss on Drying | ≤1.0% | 0. 13% | CP2015 |
Ash | ≤1.0% | 0.36% | CP2015 |
Bulk Density | 0.30~0.70g/ml | Conforms | CP2015 |
Pesticide Residue | |||
BHC | ≤0.2ppm | Conforms | GC-MASS |
DDT | ≤0.2ppm | Conforms | GC-MASS |
PCNB | ≤0. 1ppm | Conforms | GC-MASS |
Total Heavy Metals | ≤10ppm | Conforms | Colorimetry |
Arsenic(As) | ≤2ppm | Conforms | AAS |
Lead(Pb) | ≤2ppm | Conforms | AAS |
Mercury(Hg) | ≤0. 1ppm | Conforms | AAS |
Cadmium(Cd) | ≤1ppm | Conforms | AAS |
Benefits of Giant Knotweed Extract Powder For Feeding
There are many foreign reports on the effect of adding resveratrol to poultry diets. And achieved good results.
1. Adding resveratrol to the diet can improve growth performance and enhance immunity;
2. Improve the quality of livestock products and increase production efficiency.
Green and safe feed additives are an important direction of animal nutrition. knotweed root extract is being used more and more for its advantages.
What Is Our Advantage?

1. Currently we have two factories. A GMP implementation standard factory with a 100,000-level purification workshop, and a fine processing workshop covering an area of 400 square meters.
2. Now we have Halal/kosher/SC/ISO9001/ISO22000 certificate
3. The professional team will provide you with perfect after-sales service.
4. Professional laboratories provide you with various tests.
5. Customize production for customers according to customers' quality and price of products.
What We Can Do For You?
1. OEM SERVICE(tablets, capsules soft capsules)
2. Purchasing service(API ingredients, Amino Acid,vitamin)
3. TESTING
4. INFORMATION.
How to Contact Us?
Sales Market: | Email: sales@dnbiology.com |
President's Office | Email: info@dnbiology.com |
We are committed to providing the best solutions. To provide you with Giant Knotweed Extract Powder with different specifications. If required, Qyherb can also be customized according to requirements.

Why choose us?
- We offer competitive pricing without compromising on quality or value.
- Product quality is the life of the enterprise, service quality is the reputation of the enterprise, we take high-quality service and value-added service as the basic service concept, and pursue comprehensive, fast, active and timely service characteristics.
- Our Herbal Extract products are ethically sourced and environmentally sustainable.
- Our Giant Knotweed Extract Powder are of high quality, have a large inventory, and can be quickly provided to customers.
- Our customers can trust us to deliver high-quality products that meet their specific needs.
- Our company takes the value innovation as the guidance and carries on the Giant Knotweed Extract Powder brand construction research unceasingly.
- Our Herbal Extract products are designed to be effective and safe for all users.
- We take the initiative to provide the effective needs of the market and act as a trustworthy and strong partner for our customers.
- Our products are manufactured in compliance with FDA and GMP regulations.
- Strict quality management system is the necessary guarantee for the rapid development of our company.
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