High-Purity Quercetin Powder for OEM

Product Overview

Quercetin is a naturally occurring flavonoid widely found in fruits, vegetables, and grains, recognized for its potent antioxidant properties and broad functional activities. As a standardized plant extract, quercetin has attracted significant attention in the nutraceutical, sports nutrition, and cosmetic industries for its potential to support overall wellness and oxidative balance. Globally, demand for high-purity quercetin is growing due to its versatile applications in capsules, tablets, softgels, powders, and functional beverages, particularly among B2B buyers seeking reliable sources for OEM and private-label manufacturing.Plant Extracts 

Standardized Extracts 

Herbal Extracts

Content Note: Prepared by our technical team based on current scientific literature. Health claims comply with FDA/EFSA guidelines. Last reviewed: May 2026

Key Ingredients & Specifications

Quercetin extracts are standardized to ensure consistent bioactive content. They are available in powder, granule, and microencapsulated forms, suitable for multiple formulation types.

Differentiation Content

Quercetin quality and activity are influenced by the source and extraction method. High-altitude and organically cultivated plants yield higher flavonoid content. Extraction methods such as solid-phase extraction (SPE) and QuEChERS optimize purity while remaining environmentally friendly.

Comparative studies show quercetin offers superior antioxidant potential versus routine or isoquercitrin extracts when quantified using qNMR and HPLC methods, ensuring reliable and standardized sourcing for B2B manufacturers:contentReference[oaicite:0]{index=0}:contentReference[oaicite:1]{index=1}.

Applications & Benefits

Quercetin is suitable for multiple industries:

• Nutraceuticals & Sports Nutrition: capsules, powders, energy drinks
• Functional Foods & Beverages: antioxidant-enriched formulations
• Cosmetics: anti-aging and Skin Repair Ingredients
• Pharmaceutical Enzymes & Supplements: as part of combination formulas with vitamins and Amino Acids

Studies suggest quercetin may support oxidative balance, cardiovascular health, and healthy inflammatory responses, making it a versatile ingredient for B2B OEM applications.

Why Choose Us – Quality, Certifications & OEM Capability

Our quercetin products are manufactured under strict quality controls, supported by ISO 9001, GMP, HACCP, Kosher, and Halal certifications. We provide:

• Customizable dosage forms: powder, capsule, tablet, softgel, and gummies
• Minimum Order Quantity (MOQ) flexibility
• Private label and full formulation support
• Compliance with FDA and EFSA labeling guidelines

Frequently Asked Questions

What is the standard quercetin content in your extract?

Our quercetin extracts are standardized to 95% pure quercetin, verified by HPLC-UV analysis.

Which plant sources are used for quercetin extraction?

We primarily source quercetin from high-quality fruits and vegetables, including Ginkgo biloba and onion skin, ensuring high flavonoid content.

Can quercetin be used in both food and cosmetic products?

Yes, quercetin is versatile and suitable for nutraceutical, functional food, beverage, and cosmetic formulations.

What forms of quercetin are available for OEM manufacturing?

Quercetin is available as powder, granules, and microencapsulated forms to meet diverse OEM application needs.

How is the purity of quercetin verified?

Purity is verified using HPLC-UV and qNMR methods, allowing absolute quantitation of quercetin and its glycosides:contentReference[oaicite:2]{index=2}.

Are there environmentally friendly extraction options?

Yes, our extraction methods include SPE and QuEChERS techniques, which are both high-yield and environmentally sustainable:contentReference[oaicite:3]{index=3}.