Quercetin
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Quercetin Powder Bulk Supplier – 98% HPLC Plant Extracts for Dietary Supplements & Functional Foods

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AIHerba® Quercetin – GMP-Certified Herbal Extract from China’s Leading Plant Extract Factory

  1. English Name: Quercetin
  2. Specification: ≥ 98% (HPLC); available in water-soluble and oil-soluble forms.
  3. Appearance: Yellowish-white crystalline powder with a mild, characteristic aroma.
  4. CAS No.: 117-39-5
  5. Lead Time: 3–7 working days depending on order size.
  6. Package: 25 kg/drum; 27 drums per pallet; customizable packaging available.
  7. Main Market: Europe, North America, Asia; suitable for global distribution.
  8. Application / Key Benefits: Supports immune health, antioxidant protection, cardiovascular wellness, and promotes overall vitality.
  9. Industry Applications:
    a) Dietary Supplements – Capsules, tablets, and powder blends.
    b) Functional Foods & Beverages – Fortified drinks and nutrition bars.
    c) Cosmetics & Skincare – Anti-aging and protective formulations.
    d) Pharmaceuticals & Herbal Remedies – Immune support and wellness products.
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Quercetin Powder – Bulk Supplier | 98% HPLC | AIHerba® Plant Extracts

AIHerba® – Your Trusted Herbal Extract Supplier & Manufacturer in China

1.Buy High-Purity Quercetin Extract Wholesale from Trusted Herbal Extract Supplier

AIHerba® offers high-purity Quercetin powder (≥98% HPLC), a plant-derived flavonoid widely used in dietary supplements, functional foods, cosmetics, and pharmaceutical health products. Sourced from premium Sophora japonica and other botanical sources, our Quercetin is manufactured under GMP-certified processes to ensure batch-to-batch consistency, high potency, and traceable quality. With over 28 years of R&D and production experience, AIHerba provides customized OEM/ODM solutions for international partners seeking reliable bulk Quercetin supply, complete with COA, heavy metals testing, microbial safety, and pesticide residue verification. Our factory ensures rapid delivery, professional technical support, and full regulatory compliance, making us a trusted supplier for global B2B buyers in nutraceutical, cosmetic, and food & beverage industries.

2. What is Quercetin?

Quercetin is a naturally occurring flavonoid found in fruits, vegetables, and certain herbs, known for its antioxidant and anti-inflammatory properties. It is widely studied for its potential in supporting cellular health and oxidative balance. AIHerba’s Quercetin is extracted using advanced water-ethanol and supercritical CO₂ technologies, ensuring high purity, stability, and bioactive content.

3. Product Details / Specifications  COA

Parameter Specification Test Method
Appearance Yellowish-white crystalline powder Visual
Purity (HPLC) ≥98% HPLC
CAS No. 117-39-5 PubChem
Solubility Water & ethanol soluble Laboratory test
Odor Characteristic slight bitter Sensory

Pesticide Residues

Name Limit Method
Organochlorine pesticides ≤0.01 mg/kg GC-MS
Organophosphorus pesticides ≤0.01 mg/kg GC-MS
Others Compliant with EU & US standards HPLC

Heavy Metals

Name Limit Method
Lead (Pb) ≤1.0 mg/kg ICP-MS
Arsenic (As) ≤1.0 mg/kg ICP-MS
Cadmium (Cd) ≤0.5 mg/kg ICP-MS
Mercury (Hg) ≤0.1 mg/kg ICP-MS

Microbial Safety

Name Limit Method
Total Plate Count ≤1000 CFU/g AOAC 990.12
Yeast & Mold ≤100 CFU/g AOAC 997.02
E. coli Negative AOAC 991.14
Salmonella Negative AOAC 2004.03

4. Product Source

  • Botanical origin: Sophora japonica, Tartary buckwheat

  • Region: China (provenance verified)

  • Extraction method: Water-ethanol extraction, supercritical CO₂ extraction

  • Factory: AIHerba®, GMP-certified, ISO 9001:2015 & ISO 22000 compliant

5. Main Mechanisms and Benefits (Scientific & Regulatory Compliant)

  • Antioxidant activity: Neutralizes free radicals at the cellular level (PubMed link)

  • Supports cardiovascular health: Helps maintain normal endothelial function

  • Anti-inflammatory properties: Modulates inflammatory pathways (NIH link)

  • UV protection in cosmetics: Stabilizes skin formulations as a natural bioactive ingredient

⚠️ This information is for research and formulation purposes; it is not a medical treatment claim.

6. Recommended Dosage & Application Guidelines

  • Dietary supplements: 100–500 mg per serving (capsule or tablet)

  • Functional foods & beverages: 0.05–0.2% w/w

  • Cosmetics: 0.01–0.05% as antioxidant additive

Final dosage should be determined according to regulatory guidelines and formulation requirements.

7. Traditional Applications

  • Used historically in botanical supplements for general well-being

  • Incorporated in herbal teas and flavonoid-rich extracts for natural functional ingredients

8. Production Process

  1. Raw material selection & botanical authentication

  2. Cleaning, drying, and pulverization

  3. Extraction via water-ethanol or supercritical CO₂

  4. Concentration & crystallization

  5. Purification & HPLC standardization

  6. Drying, sieving, and batch packaging

  7. QC testing (COA generation: purity, heavy metals, microbial, pesticide)

9. Storage & Shelf Life

  • Storage: Cool, dry place, away from light

  • Shelf life: 24 months under recommended conditions

10. Packaging & Samples

  • Standard packaging: 25 kg drum, 27 drums/pallet

  • Samples: Available on request for evaluation

  • Transportation: Sea, air, express with full documentation

  • MOQ: 25 kg

11. Clinical Research & References

  1. PubMed: Quercetin Antioxidant

  2. NIH: Quercetin and Inflammation

  3. FDA GRAS status reference

  4. EFSA Scientific Opinion on Quercetin

12. Applicable Industries & Application Scenarios

  • Dietary supplements: Tablets, capsules, powders

  • Functional beverages: Energy drinks, fortified juices

  • Cosmetics & personal care: Anti-aging creams, serums, UV protection formulations

  • Pharmaceuticals: Botanical extract APIs

13. How to Use / Formulation Tips

  • Dissolve in ethanol or water for liquid formulations

  • Incorporate into powders for capsule/tablet formulations

  • Blend with other antioxidants for synergistic effects in nutraceuticals

  • Maintain low moisture & low temperature to ensure stability

14. Factory & Brand Expertise (Professional Credibility)

  • AIHerba® Factory: GMP-certified, ISO 9001, ISO 22000

  • Experience: 28+ years in natural plant extract production

  • Capabilities: OEM/ODM customization, quality traceability, COA provision

  • Global Partnerships: Europe, North America, Asia

15. FAQ (6 Questions)

  1. What is the source of your Quercetin powder?

    • Sourced from authenticated Sophora japonica and Tartary buckwheat.

  2. What purity and testing standards are applied?

    • ≥98% HPLC; tested for heavy metals, pesticide residues, and microbes.

  3. Can you provide OEM/ODM services?

    • Yes, we offer customized solutions for capsules, tablets, functional foods, and cosmetics.

  4. What is the recommended storage condition?

    • Cool, dry, and away from direct sunlight; 24 months shelf life.

  5. Are samples available?

    • Yes, small quantity samples are available for evaluation.

  6. Which industries use your Quercetin?

    • Nutraceuticals, functional foods, beverages, cosmetics, and pharmaceutical raw materials.

16. Contact & Verification

AIHerba® | Shaanxi Zhonghong Investment Technology Co., Ltd.

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