| Customization: | Available |
|---|---|
| Certification: | ISO, FDA |
| Assay Method: | HPLC, UV |
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Our Quercetin Dihydrate 95% Extract is a high-purity, natural flavonoid derived from Sophora japonica (Japanese Pagoda Tree) flower buds. Utilizing advanced extraction and crystallization technologies, we deliver a minimum 95% quercetin dihydrate content, ensuring superior bioavailability and efficacy. This ingredient is ideal for nutraceuticals, functional foods, and cosmetic formulations targeting oxidative stress, immune modulation, and anti-aging benefits.
Keywords: Quercetin dihydrate 95%, Sophora extract supplier, natural antioxidant powder, bulk quercetin, GMP-certified factory, Made-in-China.
95% Purity: Lab-verified quercetin content with HPLC testing.
Natural Source: Ethically harvested Sophora japonica flower buds, non-GMO and sustainably cultivated.
Anhydrous Formula: Zero moisture for enhanced stability and shelf life.
Multi-Functional Benefits: Supports immune defense, cardiovascular health, and allergy relief.
Global Compliance: Meets USP, EP, and FDA standards for dietary ingredients.
| Category | Parameter | Specification | Test Method/Standard |
|---|---|---|---|
| General | Product Name | Quercetin Dihydrate 95% Powder | - |
| Botanical Source | Sophora japonica Flower Buds | Macroscopic/Microscopic ID | |
| Physical | Appearance | Light Yellow Fine Powder | Visual Inspection |
| Particle Size (D90) | ≤ 80 μm | Laser Diffraction (ISO 13320) | |
| Loss on Drying | ≤ 1.5% | Karl Fischer (USP <921>) | |
| Chemical | Quercetin Dihydrate | ≥ 95% | HPLC (USP <621>) |
| Total Ash | ≤ 0.2% | Gravimetric Method (EP 2.4.16) | |
| Solubility | Soluble in Ethanol/DMSO; Water-Dispersible (with carriers) | In-house Test | |
| Microbial | Total Plate Count | ≤ 1,000 CFU/g | ISO 4833-1:2013 |
| Yeast & Mold | ≤ 100 CFU/g | ISO 21527-1:2008 | |
| Heavy Metals | Lead (Pb) | ≤ 0.5 ppm | ICP-MS (AOAC 2013.06) |
| Arsenic (As) | ≤ 0.2 ppm | ICP-MS (AOAC 2013.06) | |
| Safety | Residual Solvents | Ethanol ≤ 10 ppm | GC-FID (EP 2.4.24) |
| Allergens | Free from Gluten, Soy, Dairy | ELISA |
Nutraceuticals: Capsules, tablets, and powders for immune support and allergy relief.
Functional Foods: Energy drinks, sports nutrition, and fortified snacks.
Cosmetics: Anti-aging serums, sunscreens, and skin repair creams.
Pharmaceuticals: Adjuvant formulations for inflammation and metabolic health.
Hubei Sanxin Pharmaceutical Technology Co., Ltd is a wholly-owned subsidiary of Hubei Sanxin Biotechnology Co., Ltd. Which was established in March 2011, located in Dongcheng Industrial Park, Fangxian, Shiyan City. Our company owns first -class production equipment with the latest technology and testing methods. We specialize in scientific research, development, production, and sales all as one national high-tech enterprise, We also be known for agricultural leading enterprises in Shiyan City. We have GMP planting base with more than 4942 acres, 2 automatic production lines, which can produce more than 800 tons of plant extracts annually. The company has passed FDA certification and Kosher and Halal certification.
Sanxin′s main products are: Polygonum Cuspidatum Extracts (resveratrol, Polydatin, emodin, Physcion and proportional extracts of Polygonum cuspidatum); Pueraria Extracts (pueraria isoflavones, puerarin); Olive Leaf Extract(Oleuropein, Hydroxytyrosol); Tea extract; Baicalin and other standard extracts and proportional extract products. Our products have been widely used in food, health care products, medicines, cosmetics, veterinary medicine, feed additives and many other fields. Now company′s products have been sold to Hunan, Tianjin, Beijing, Shanghai and other places, some of the products have been exported to the United States, Canada, UK, Japan, and other more than 30 countries. Sanxin company′s main spirit is: Be honest be Trustworthy, win-win cooperation! Welcome to our company!
For more information, samples, or to place an order, please contact us. We look forward to partnering with you to deliver high-quality resveratrol powder that meets your needs!
GMP & ISO 22000 Certified: Produced in facilities compliant with FDA and EU regulations.
Full Traceability: Documentation from raw material harvest to final product.
Technical Support: Free R&D assistance for solubility enhancement and stability testing.
Contact us for COA samples, custom projects, or partnership opportunities!
1. Q: How do you ensure the 95% quercetin dihydrate purity?
A: Each batch undergoes HPLC testing. A Certificate of Analysis (COA) is provided for verification. Request a sample COA today!
2. Q: Is this extract suitable for vegan or halal products?
A: Yes! Our product is plant-based and allergen-free. Halal/Kosher certification is available for bulk orders.
3. Q: What is the MOQ and lead time?
A: MOQ starts at 1kg with a 15-day lead time. Bulk discounts apply for orders over 50kg.
4. Q: Can this powder be used in beverages or gummies?
A: Absolutely! We offer water-dispersible versions with carriers (e.g., cyclodextrins) for enhanced solubility.
5. Q: Do you provide technical support for formulation?
A: Yes! Our R&D team offers free guidance on dosage, stability testing, and solubility optimization.
6. Q: Are there clinical studies supporting quercetin's benefits?
A: Yes! We provide scientific literature on its immune-boosting, antiviral, and anti-inflammatory effects.
7. Q: Can you customize packaging or labeling?
A: Certainly! OEM/ODM services include private labeling, vacuum-sealed bags, or drum packaging.
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