Pure Quercetin Powder
Part of used:Bark and Leaves
Specs Available:95%,98% UV,HPLC
Appearance:Dihydrate is yellow acicular crystal (dilute ethanol)
CAS NO.:117-39-5
Molecular Weight:302
Molecular Formula:C15H10O7
Inventory: in stock
Our Advantages: Scalable production capacity, strict quality control, cost efficiency from integrated factories, over 20 years of experience, advanced technology, and 24/7 after-sales support.
Certificaions: FSSC2000/ISO2000/HALAL/KOSHER/HACCP
Delivery terms: FedEx, DHL, EMS, UPS, TNT, all kinds of the airline, international shipping companies.
Payment: TT/DP/PAY PAL/VISA/DA/LC/MASTER CARD/ESCROW
Customized Service: Supports ODM/OEM
Free sample is available.
We do not sell retail quantities to individuals.
Pure Quercetin Powder: Boost Your Products with a Natural Antioxidant
Welcome to Xi'an Jiayuan Bio-tech Co., Ltd., a well-known bio-tech company, committed to innovation and excellence. We are experts in premium pure quercetin powder that distinguishes us from the others.
It is meticulously gathered from nature, such as fruits, vegetables and plant barks. We use a state of the art extraction method to make sure every particle of our product is fully potent. Quercetin is a strong antioxidant that has been scientifically proved to neutralise free radicals in the body. Not only does this assist reduce oxidative stress but also adds to a broad variety of health advantages. It may assist improve cardiovascular health by encouraging healthy blood flow, enhance the immune system to help the body fight off diseases more efficiently, and even have anti-inflammatory effects that can ease symptoms associated with some chronic ailments.
Our powder may be a vital element to produce treatments for oxidative stress associated ailments in pharmaceutical sector. It might increase the effectiveness of medications and provide a more natural way to treat conditions. Our product is a significant addition for dietary supplements of nutraceutical business. Whether in capsule, tablet or powder form, it provides a practical option for customers to add the health-promoting advantages of quercetin to their daily routine. In the cosmetic sector, quercetin's antioxidant and anti-inflammatory characteristics make it a perfect element in skin care products. It may also help to minimise the effects of ageing such as fine lines and wrinkles and soothe sensitive skin. It is a natural and effective way to get a healthier complexion.
No matter which industry you belong to, Xi'an Jiayuan Bio-Tech Co., Ltd.'s quercetin powder is here to enhance the effectiveness of your products. We are committed to offering natural wellness solutions, backed by our expertise and dedication to quality.

Specifications of Pure Quercetin Powder
| Parameter | Details |
|---|---|
| Product Name | Pure Quercetin Powder |
| Botanical Source | Sophora japonica (Japanese pagoda tree) |
| Active Ingredient | Quercetin (≥95%) |
| Appearance | Fine, yellowish powder |
| Solubility | Soluble in ethanol, acetone, and water |
| Extraction Method | Ethanol extraction, purity assured |
| Shelf Life | 24 months |
| Packaging | 25kg/drum or customized options |
Application Areas
1. Medical and health care field
Antioxidant: Quercetin has a significant antioxidant capacity, may scavenge free radicals in the body, decrease oxidative stress damage, and help prevent a range of chronic illnesses, such as cardiovascular disease, cancer, etc.
Anti-inflammatory: It may suppress the production of inflammatory mediators and the activation of inflammatory signalling pathways, and has certain supplementary therapeutic impact on inflammatory-related disorders such as arthritis and enteritis.
Anti-allergic: It may stabilise mast cells and limit the production of allergic mediators such as histamine, therefore alleviating allergic symptoms such as allergic rhinitis and asthma.
Cardiovascular protection: It helps to decrease blood pressure, control blood lipids, prevent platelet aggregation, protect the cardiovascular system and minimise the risk of coronary heart disease, stroke and other disorders.
Anti-tumor: Quercetin has been shown to suppress proliferation and induce apoptosis in a range of cancer cells, and may be employed as a possible medication for tumour adjuvant treatment. However, it cannot replace established cancer treatments.
2. Food field
Natural antioxidants: It can be added to food to prevent oil rancidity, food discoloration and flavor changes, and extend the shelf life of food. For example, it can effectively inhibit oxidation reactions and maintain the quality of food when applied to foods such as oils, meats, and beverages.
Functional food additives: used to produce foods with specific health functions, such as adding to health products, beverages, cakes, etc. to make foods with antioxidant and immune-enhancing functions to meet consumers' demand for healthy foods.
3. Cosmetic field
Skin Care Effect: It has antioxidant and anti-inflammatory actions, may minimise UV damage to the skin, prevent skin ageing, and alleviate skin inflammation, such as acne and eczema. It is utilised in many skin care products like creams, lotions, essences, etc.
Effects of Hair Care It helps to increase scalp blood flow, decrease scalp irritation and encourage hair growth. It may be used to shampoo, conditioner and other things to help safeguard hair health.

COA
| Product Name | Quercetin Powder | ||
| Botanical source | Sophora Japonica L. | Part Used | Buds |
| Ref standard | Enterprise standard | ||
| Items | Requirements | Results | Method |
| Appearance | Yellow powder | Conforms | Visual |
| Identification | Must positive | Positive | Infrared Absorption |
| Melting point | 305℃—315℃ | 312℃ | Melting point Apparatus |
| Particle size | 95% pass through Sieve 80 mesh | Conforms | CP2015 |
| Bulk density | ≥0.20gm/cc | 0.23gm/cc | CP2015 |
| Tapped density | ≥0.30gm/cc | 0.35gm/cc | CP2015 |
| Heavy metal | ≤10.0ppm | <10ppm | Atomic Absorption |
| Arsenic (As) | ≤2.0ppm | 0.35ppm | Atomic Absorption |
| Lead(Pb) | ≤2.0ppm | 0.42ppm | Atomic Absorption |
| Mercury(Hg) | ≤1.0ppm | 0.05ppm | Atomic Absorption |
| Cadmium(Cd) | ≤1.0ppm | 0.09ppm | Atomic Absorption |
| Sulphated ash | ≤0.30% | 0.15% | CP2015 |
| Loss on drying | ≤12.0% | 9.36% | 5g/120℃ |
| Assay | ≥95.0% | 95.43% | HPLC |
| Total Plate Count | ≤1000cfu/g | 100cfu/g | CP2015 |
| Mildew &Yeast | ≤300 cfu/g | 10cfu/g | CP2015 |
| E. Coli | Non-detected | Conforms | CP2015 |
| Salmonella | Non-detected | Conforms | CP2015 |
| Staphylococcus | Non-detected | Conforms | CP2015 |
| Residual Solvent | ≤5000mg/kg | 105mg/kg | GC |
| Pesticide Screen | Non-detected | Conforms | GC |
| Conclusion | The product conforms to the enterprise standard | ||
Packaging
We can offer free samples for new costumers and packages for 1kg/Aluminum foil bag, 25kg/Drum. Or according to customer requirements. And we use sea freight/air freight to deliver our products. We collaborate with FedEx, EMS, UPS, TNT, various airlines, and major shipping companies.

Shipping Samples
What you see in front of you is our stock map of pure quercetin powder. The picture clearly shows that the product is neatly stacked in rows and columns, from the ground to the top, occupying a prominent area of the huge warehouse. From this intuitive diagram, we can know that our inventory scale is very considerable, and the product quantity is sufficient to meet the diverse needs of the market at present and in the foreseeable future. Whether it is a regular bulk order or a sudden emergency demand, we have the confidence and ability to ensure a stable and efficient supply, so that every customer does not need to worry about product supply issues.

After-Sales Service
We provide comprehensive after-sales support to ensure your satisfaction:
Technical Support: Our team is available to provide guidance on the application and formulation of it.
Flexible Return Policy: If you are not pleased with your purchase, we have a flexible return policy to handle any problems.
Tailored Solutions: We provide tailored packaging and product specifications to suit your unique requirements.

Qualification Certifications
Currently, our company has acquired certifications including ISO, SGS, HALAL, KOSHER, BRC, ORGANIC, ISO9001, ISO22000.

Why Choose Xi’an Jiayuan Bio-tech Co., Ltd.?
With over two decades of experience in the plant extract industry, Xi'an Jiayuan Bio-tech Co., Ltd. is an enterprise integrating production and sales. A full manufacturing line and extensive sales network have been built. Every stage from raw material acquisition to the fabrication of completed products is under stringent monitoring to guarantee product quality. The company sales staff is knowledgeable about market trends and client requirements, which helps in successfully promoting goods to various geographical areas and consumer segments, thereby creating an unimpeded link between production and sales.
At present, we are equipped with advanced and sufficient testing equipment, including 3 Shimadzu gas chromatographs, 5 Shimadzu liquid chromatographs and 5 Agilent gas chromatographs. In addition, we are also equipped with a series of complete auxiliary instruments such as automatic polarimeter, melting point tester, acidity meter, drug stability test chamber, clarity test equipment, etc. These equipments cover all aspects from raw material inspection, intermediate monitoring to finished product inspection, which can fully meet our stringent requirements for product quality analysis and ensure that the quality of each production stage is accurately controlled.
In terms of logistics and distribution, we have established long-term and stable cooperative relations with internationally renowned express giants such as FedEx, DHL, EMS, UPS, TNT, etc., and have also reached close cooperation with various airlines and professional international freight companies. Such a wide and diverse logistics cooperation network enables us to flexibly choose the most appropriate delivery method according to the different needs and actual conditions of customers, ensuring that the products can be delivered to customers around the world safely, quickly and on time.
FAQ
Q:What is the active ingredient in it?
A: The major active ingredient is quercetin, a powerful antioxidant with anti-inflammatory and immune boosting qualities.
Q:How is it used in the pharmaceutical industry?
A. It is often utilised in the making of natural medications that decrease inflammation, support heart health and protect cells from oxidative damage.
Q: Do you have special packing for big orders?
A: Yes, we provide flexible packaging solutions such as bespoke sizing and labelling to fit your individual company requirements.
Q:Is it organic?
A: Yes, our powder is available with organic certification, confirming it is produced under the strictest standards for organic cultivation.
Q: How is the goods shipped?
A: We mail it in safe, moisture proof packing so it arrives in pristine condition.

Contact us
If you are intersted in our Pure Quercetin Powder, please contact us via sales@jayuanbio.com, sales1@jayuanbio.com at any time if you feel free.
We'll try our best to give you a better service.
Looking forward to your immediated feedback!
Your prompt email would be highly appreciated!

