Quercetin Powder

Premium Quercetin Powder Supplier – 95%-98% Purity, HPLC-Tested Natural Flavonoid for Nutraceutical & Pharmaceutical Formulations

Xi'an Jiayuan Bio-tech Co., Ltd. delivers pharmaceutical-grade Quercetin Powder at 95%-98% purity (HPLC verified), extracted from Sophora japonica bark and leaves. Our factory was established in 2002 with 30 million yuan in registered capital. It has two GMP-certified production lines that are certified under ISO9001, FSSC22000, HALAL, and KOSHER. Our monthly production capacity may be higher than the required quantity, and we have a skilled technical team of 30 people who are in charge of quality from buying the raw materials to packing the produced goods. Our product has ultra-fine micronization for better bioavailability, lead concentration ≤3ppm and moisture control ≤4.0% and offers full COA documentation and third party test results for every batch.

What Is Quercetin Powder?

The result is a high purity flavonol chemical (CAS: 117-39-5) of the polyphenol family and is systematically named 3,3',4',5,7-pentahydroxyflavone. It is a yellow crystalline powder, with a chemical formula C15H10O7 and a molecular weight 302. It is extracted from Quercus iberica bark and leaves by controlled acid hydrolysis.

This bioactive ingredient provides an answer to major formulation difficulties in the nutraceutical business. Naturally found in onions, apples and berries, concentrated versions provide therapeutic doses not easily achieved by diet alone. Our product is stable under light-protected conditions of storage and stable for 24 months.

COA of Quercetin Powder

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

Key Functions

Quercetin has many physiological advantages via well proven mechanisms:

Antioxidant Defense: It directly gets rid of reactive oxygen species and makes the body's own antioxidant enzymes work. Oxidative stress indicators have gone down a lot, according to studies.

Support for the cardiovascular system: helps keep arteries flexible and stops LDL cholesterol from oxidizing. Clinical research shows that coronary artery dilatation makes a big difference in controlling blood pressure and cholesterol levels.

Immune Modulation: Regulates histamine release via NF-kB inflammatory pathways and mast cell stabilization. This double effect promotes both acute and persistent immunological responses.

Cellular Health: In preclinical investigations, it has anti-proliferative activity by triggering death of aberrant cells and improving healthy cell function via DNA protection mechanisms.

Antimicrobial Activity: Exhibits broad-spectrum activity against bacterial and viral infections, useful in formulations for respiratory health.

Application Fields

Our Quercetin Powder serves diverse sectors requiring validated natural ingredients:

Dietary Supplements: The key element in pills and tablets that assist with antioxidants, seasonal health, and heart health. How to take it: Typically each dosage is 500 to 1000 mg.

Functional foods: This may be utilized to manufacture protein powders, energy bars, and powdered drink mixes that wish to make clean-label antioxidant claims.

Pharmaceutical Development: Used as active pharmaceutical ingredient (API) and USP reference standard in drug development and research methodologies.

Cosmetic Uses: It is utilized in anti-aging serums and anti-inflammatory skin care products because to its collagen-protecting properties.

Certifications

Our manufacturing facility holds comprehensive international certifications:

• ISO9001 Quality Management System (2012)
• FSSC22000 Food Safety System Certification
• HALAL & KOSHER Certifications
• HACCP Food Safety Management
• High-tech Enterprise of Shaanxi Province (2013)
• Private Science and Technology Enterprise recognition

These credentials ensure your formulations meet global regulatory requirements across markets including EU, USA, and Middle East regions with Quercetin Powder.

Quality Control Standards

We maintain rigorous specifications validated through third-party laboratories:

Parameter	Specification
Appearance	Yellow to light yellow crystalline powder
Purity (HPLC)	≥95%, ≥98%
Loss on Drying	≤4.0% - ≤12.0%
Lead (Pb)	≤3ppm
Cadmium (Cd)	≤1ppm
Arsenic (As)	≤1ppm
Mercury (Hg)	≤0.1ppm
Total Plate Count	≤1000 CFU/g
Salmonella	Negative
E. coli	Negative
Shelf Life	24 months (sealed, cool, dry storage)

Each batch includes COA with HPLC chromatogram, heavy metal analysis, and microbiological test results. MSDS available upon request.

Payment & Shipment

Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit), PayPal, Visa, MasterCard, Western Union, MoneyGram, and Escrow for Alibaba transactions.

Shipping Options:

• Express Courier (<100kg): FedEx, DHL, EMS, UPS, TNT – 3-5 days door-to-door
• Air Freight (100-1000kg): 5-7 days airport-to-airport
• Sea Freight (>300kg): ~30 days port-to-port

For customers without import experience, we provide customs clearance assistance in Europe and the United States, ensuring direct delivery to your facility.

Packaging & Transportation

Standard Packaging:

• 1kg: Aluminum foil bag (vacuum-sealed)
• 25kg: Fiber drum with double food-grade PE bags inside

Storage Conditions: Cool, dry, light-protected environment. Quercetin is hygroscopic and sensitive to UV exposure – proper storage maintains declared potency throughout shelf life.

Transportation: We partner with international logistics networks to optimize routing based on your location. Temperature-controlled options available for sensitive climates.

After-sales Service

Our commitment extends beyond delivery with 24/7 technical support:

• Formulation consultation for bioavailability enhancement
• Custom purity grades and particle size specifications
• Batch consistency verification and stability testing support
• Regulatory documentation assistance for market submissions
• Free sample provision (5-20g) for qualification testing

With decades of expertise in manufacturing comes more than simply a product—you get a partner in your development objectives.

Exhibitions

Xi'an Jiayuan Bio-tech attends frequently the main international trade exhibitions including Vitafoods Europe, SupplySide West, CPHI Worldwide. These platforms provide direct access to our technical staff to discuss project specific needs and evaluate updated quality documents.

Why Choose Us?

Direct Manufacturer Advantage: Factory price bypasses middlemen markups. The flexible MOQ enables ordering many products and sending them together, thereby reducing logistical expenses.

Scalable Output Two GMP manufacturing lines with ton-level monthly output offer supply stability for fast-growing brands.

Technical Expertise: 30 expert personnel comprising formulation chemists give answers to solubility issues with advise on micronization and ideas for co-processing.

Quality Transparency Total traceability from botanical procurement to final packaging. Batch variation <2% means you get consistent batches of product from batch to batch.

Global Compliance: Documentation packages enable regulatory filings in key areas so you can go to market faster.

FAQ

Q: How can we keep the quality consistent from batch to batch?

A: Each batch comes with a verified COA with HPLC test data demonstrating 95%-98% purity. Batch-to-batch variance is controlled to less than 2% and stability for a 2 year shelf life is assured when properly kept.

Q: What is the lead time?

A: Sample/small orders: 1-3 working days

Commercial bulk orders: 7-10 days production

International sea freight: production time + approximately 30 days shipping

Q: What are the shipping options and packaging?

A: Courier (<100kg, 3-5 days, door-to-door), Air freight (100-1000kg, 5-7 days, airport-to-airport), Sea freight (>300kg, ~30 days, port-to-port). Packaging: 1kg/aluminum foil bag; 25kg/fiber drum with double PE bags. Store in cool, dry, dark place as quercetin is hygroscopic.

Q: What are the payment terms?

A: T/T is most common; we also accept L/C, Western Union, MoneyGram, and Alibaba Secure Payment for your convenience.

Contact Us

Ready to enhance your formulations with premium Quercetin Powder? Contact our technical team at sales@jayuanbio.com and sales1@jayuanbio.com  for COA samples, custom specifications, or regulatory documentation.