Quercetin extract is a plant-derived pigment belonging to the flavonoid class of compounds. It occurs naturally in a wide array of plants and foods, including onions, green tea, apples, berries, Ginkgo biloba, St. John’s wort, and American elder. Among all sources, quercetin extracted from Sophora Japonica is the most sought-after. Valued for its medicinal properties, quercetin is the most prevalent flavonoid in the average diet—experts estimate that people consume between 10 to 100 milligrams of it daily through various food items. China Extract Warehouse is a leading professional manufacturer and supplier of quercetin extract powder in China, dedicated to delivering top-tier products at competitive prices. For long-term partnerships, we offer free samples and welcome your inquiries anytime.
Quercetin extract is a potent plant flavonoid renowned for its antioxidant, anti-inflammatory, and immune-enhancing capabilities. It exists naturally in diverse fruits, vegetables, and grains like apples, onions, and citrus fruits. As a health food component, quercetin is widely utilized for its potential to foster overall well-being and bolster the body’s natural defense mechanisms. Its ability to neutralize harmful free radicals makes it a standout addition to dietary supplements designed to strengthen immune function and shield the body against oxidative stress.
Basic Information
| Category | Details |
|---|---|
| Product Name | Quercetin Extract |
| Other Name | Quercetin |
| Specification | 95%, 98% |
| Appearance | Yellow fine powder |
| Molecular Formula | C₁₅H₁₀O₇ |
| Molecular Weight | 302.24 |
| CAS Number | 117-39-5 |
| EINECS Number | 204-187-1 |
| Standards Met | USP or EP |
| Certifications | ISO, Halal, Kosher, SGS Report |
| Supplier | China Extract Warehouse |
| Sample Availability | Free Offer |
Benefits of Quercetin Extract
Quercetin extract boasts a broad spectrum of health advantages, making it a valuable component in health food products:
- Powerful Antioxidant Action: By scavenging free radicals in the body, quercetin protects cells from oxidative damage—a process linked to aging and numerous chronic illnesses. This effect is critical for sustaining overall health and longevity, helping the body combat oxidative stress triggered by environmental factors, poor diet, or stress.
- Anti-Inflammatory Support: It has been demonstrated to reduce systemic inflammation, a key contributor to conditions like arthritis, heart disease, and certain autoimmune disorders. By mitigating inflammation, quercetin promotes joint health and may ease symptoms associated with inflammatory issues.
- Cardiovascular Health Promotion: Research indicates that quercetin may enhance blood circulation and maintain healthy blood pressure levels by relaxing blood vessels and supporting optimal endothelial function. These benefits contribute to improved heart health and a lower risk of cardiovascular disease.
- Seasonal Allergy Relief: Studies have explored quercetin’s potential to alleviate seasonal allergy symptoms. By stabilizing mast cells, it reduces the release of histamines, minimizing reactions like sneezing, itching, and nasal congestion—making it a popular natural choice for hay fever and other allergy sufferers.
Uses of Quercetin Extract
- Quercetin extract is a robust antioxidant and anti-inflammatory agent that safeguards cellular structures and blood vessels from the damaging impact of free radicals.
- As an antioxidant, quercetin helps lower LDL (bad) cholesterol levels, providing protection against heart disease.
- Quercetin inhibits an enzyme that leads to the buildup of sorbitol—a substance linked to nerve, eye, and kidney damage in individuals with diabetes.
Test Report
| Test Item | Specification | Test Result | Test Method |
|---|---|---|---|
| Assay by HPLC | ≥95.0% | 96.32% | HPLC |
| Appearance | Yellow Powder | Complies | Visual Inspection |
| Melting Point | 305℃–315℃ | 313℃ | Melting Point Apparatus |
| Reducing Sugars | Not Detected | Not Detected | Chemical Reaction |
| Particle Size | ≥95% passes 80 mesh | Complies | Screen Analysis |
| Water Content | ≤12% | 10.5% | Karl Fischer Method |
| Bulk Density | ≥0.10 gm/cc | 0.14 gm/cc | CP2015 |
| Sulphated Ash | ≤0.3% | 0.12% | EP9.0 |
| Heavy Metals | |||
| Total Heavy Metals | ≤10 mg/kg | <10 mg/kg | Visual Colorimetry |
| Lead | ≤2 mg/kg | Complies | ICP-MS |
| Arsenic | ≤2 mg/kg | Complies | ICP-MS |
| Mercury | ≤1 mg/kg | Complies | ICP-MS |
| Cadmium | ≤0.5 mg/kg | Complies | ICP-MS |
| Microorganisms | |||
| Total Plate Count | ≤1000 cfu/g | Complies | CP2015 |
| Total Yeast & Mold | ≤100 cfu/g | Complies | CP2015 |
| E. Coli | Negative | Negative | CP2015 |
| Salmonella | Negative | Negative | CP2015 |
Conclusion: The product meets all specified testing requirements upon inspection.
Where to Buy Quercetin Extract Globally?
China Extract Warehouse is a trusted supplier of high-quality nutritional compounds, offering quercetin extract as part of our comprehensive portfolio of health-focused ingredients. Serving clients worldwide, we provide both the raw materials and technical expertise necessary to develop effective nutritional products.
- Our quercetin is sourced from premium, natural ingredients to ensure maximum potency and efficacy in your end products. We offer it in powder form, providing flexibility for various formulation needs. Every batch is carefully processed to preserve its structural integrity and bioavailability, ensuring it delivers the intended health benefits.
- We are dedicated to providing top-tier health food ingredients at competitive prices. With a focus on reliability and customer satisfaction, we maintain consistent product quality and offer exceptional customer support. Whether you’re developing new dietary supplements or enhancing existing formulations, our quercetin can be seamlessly integrated into a wide range of health food products.
- Our flexible ordering options and commitment to on-time delivery make us a dependable partner for manufacturers. We also provide free samples for evaluation before large orders, so you can be fully confident in the quality and effectiveness of our ingredients. Choose China Extract Warehouse’s quercetin extract—a natural, powerful ingredient that supports your product’s health benefits and meets the demands of today’s health-conscious consumers.
