Sophora Japonica Extract Quercetin

The quercetin in Sophora Japonica extract is a high-quality bioactive that can be used in drugs and supplements.

Sophora Japonica Extract Quercetin, an extract from Sophora japonica flowers, is a natural flavonoid compound extracted from dried Sophora japonica flower buds. Shaanxi Hongda utilizes its core technology of "directional gradient crystallization + multi-stage membrane filtration" to produce high-density, high-flowability, industrial-grade pure quercetin powder with zero ethylene oxide residue. This ensures a quercetin content of 95%/98% (HPLC), representing absolutely pure active monomer components with a clear chromatographic fingerprint. This ensures compliance with the most stringent entry audits of the United States Pharmacopeia (USP) or the European Pharmacopoeia (EP). We have also solved the common problems of "heavy metal accumulation" and "excessive ash content" in natural extracts.

We use supercritical carbon dioxide extraction to extract quercetin powder without using any solvents, meeting the extremely stringent EU ETO 0 detection limit. High-performance liquid chromatography (HPLC) testing confirms that the purity of quercetin is at least 95%, meeting the standards for pharmaceutical-grade substances. As is well known, quercetin extract is easily absorbed by the human body, beneficial for heart health, maintaining healthy skin, and strengthening the immune system. Customers can choose the powder formulation of our products, such as capsules, premixed powder, or tablets.

What are the benefits of choosing our Quercetin Sophora Japonica Extract?

• Extremely High "Pharmacopoeia-Grade" Purity and Stability: Shaanxi Hongda performs batch-to-batch impurity spectrum clearing scans to ensure no cross-interference from isorhamnetin and similar substances.
• Exclusive "Ultra-fine Powdering" and Optimized Absorption Rate: We control the particle size below 5μm through physical modification, and actual tests show that its dissolution rate in the intestine is increased by approximately 30%, effectively solving the "perceived absorption rate" pain point for customers in capsule or tablet development.
• 100% Green Solvents and "Clean Label" Guarantee: We use purified water and pharmaceutical-grade ethanol as extraction media, eliminating the residue of carcinogens such as methanol and benzene.

• Crystal form improvement and particle size control: Ordinary quercetin powder is loose (bulk density < 0.25 g/mL). Hongda, through physical modification technology, can customize high-density, micronized (e.g., 100-pass 325 mesh/particle size less than 45 microns) or granulated quercetin, significantly improving its in vitro dissolution rate and bioavailability.
• Microbial Control: Total Colony Count: Less than 1,000 CFU/g; Mold: Less than 100 CFU/g; 100% detectable levels of thermostable E. coli/Salmonella, etc. A clean formulation, perfectly compliant with the Non-Irradiated clean label, suitable for supplements for mothers, infants, and sensitive populations.
• Polycyclic aromatic hydrocarbon (PAH) toxicology control: Benzo[a]pyrene < 10 ppb / total PAH 4 < 50 ppb (GC-MS detection), eliminating the risk of PAH carcinogen explosions caused by coal drying.
• Custom Solutions: mixtures, concentrations, and formats (such powder and capsules) that are customized particularly for you.

Product Parameters

Applications in medicine and health foods

• Perfect for drug development: making medications that combat infections and inflammation.
• Vitamins for heart health, immune system boosters, and anti-aging mixes are all examples of nutraceuticals.
• Nutraceuticals enhance their effects when paired with resveratrol, curcumin, or vitamin C.

Production Process of Sophora japonica Extract:

1. Selection and Color Sorting of High-Quality Sophora japonica Flower Origins: Strictly select high-quality dried Sophora japonica flowers that are not yet in bloom and have peak rutin content. Use a fully automated color sorter to physically remove 100% of impurities such as branches, moldy fruit, and foreign substances.

2. Multi-Stage Alkaline Water Heating and Physical Centrifugation: The Sophora japonica flowers are fed into the extraction tank. Using slightly alkaline pure water (pH controlled at 8.0-9.0), the large molecular weight rutin is completely converted into easily soluble salt form at 85℃. The insoluble plant fiber is then physically dried using a centrifuge.

3. Online Precision Acid Adjustment and Low-Temperature Forced Recrystallization: The clarified alkaline extract is precisely and online injected with food-grade hydrochloric acid in a closed channel to adjust the pH to acidic. This allows high-purity rutin to rapidly and spontaneously precipitate as microcrystals at a low temperature of 4℃.

4. High-power pressure filtration, grading, washing, and biomass acid hydrolysis: The collected high-purity rutin microcrystals are transferred to a specialized acid hydrolysis reactor. Dilute sulfuric acid is added, and the reaction is carried out at over 95℃ to completely break the glycosidic bonds (hydrolysis), precisely shearing the rutin molecules into one molecule of quercetin monomer, one molecule of glucose, and one molecule of rhamnose.

5. Repeated boiling recrystallization and sugar stripping in pure aqueous phase: The crude quercetin powder obtained from hydrolysis undergoes multi-stage hot washing, boiling, and physical recrystallization using deionized water free of heavy metals. This completely removes residual free reducing sugars and inorganic salts from the mother liquor, ensuring crystal purity reaches over 95%.

6. All-stainless steel sealed multi-stage vacuum drying to prevent crystal damage: The high-purity quercetin wet cake is fed into a sealed double-cone vacuum dryer. The heated surfaces are controlled at 80℃ under high vacuum for gentle dehydration, preventing thermal oxidation and discoloration of the flavonoid core due to high temperatures.

7. Airflow-based non-destructive collision micronization and granulation: The dry powder is micronized and refined using a specially designed high-speed cold airflow collision pulverizer. Particles are pulverized to 80-200 mesh through mutual collision, completely eliminating the high heat and secondary heavy metal iron ion abrasion contamination associated with traditional mechanical grinding.

8. Rare earth iron removal and double-layer nitrogen-filled packaging in a Class 100,000 cleanroom: Bulk dry powder is subjected to a 12,000 Gauss strong magnetic field for interception. It is then seamlessly packed into high-density anti-static double-layer PE bags and sealed with nitrogen in a cleanroom with a relative humidity of less than 40%, completely preventing trace oxygen degradation during the shelf life.

Quality You Can Trust

Every batch of Sophora Japonica Extract Quercetin undergoes rigorous testing:

• Third-Party Verification: Full CofA and stability studies (ICH accelerated conditions).
• Audit-Ready Documentation: SDS, traceability reports, and regulatory filings.
• Batch consistency is guaranteed through the use of advanced HPLC purification techniques.

Certifications & Global Compliance

Our Sophora Japonica Extract satisfies the highest standards set by the FDA, EMA, ISO 9001, and GMP. Our solvent-free extraction process follows ICH Q7 and USP criteria, and our kosher, halal, and USDA organic certifications make sure that people all around the world can get our products.

Global Supply Chain & Support

• Quick turnaround: Orders of 500 kg or more will be shipped in 14 days.
• Discounts for buying in bulk: Prices are competitive for orders of 25 kg or more.
• Logistics Expertise: Cold-chain shipping

Customized "Water-Soluble" Solutions

For functional water and gummy candy applications, we offer a "quercetin phospholipid complex" synergistic solution to completely solve solubility problems.

FAQ

Q: How is Sophora Japonica Extract Quercetin purified?

A: Our CO2 supercritical extraction and HPLC technique yield ≥98% purity, as certified by external labs.

Q: Can I obtain a customized quercetin blend?

A: Yes! To improve complexes, we dissolve them in water or add bromelain and vitamin C.

Q: What licenses do you have?

A: Our GMP, ISO 9001, FDA, USDA Organic, Kosher, and Halal certifications allow us to sell worldwide.

Q: How do you standardize batches?

HPLC testing and advanced quality control ensure that every shipment is the same strength.

Q: Quercetin: very hygroscopic? You wrap it how?

A: Quercetin dihydrate is stable but needs particular humidity. Pharmaceutical-grade aluminum foil double-layer vacuum packaging is used by Hongda. It can exercise for 36 months in consistent temperature and dry circumstances.

Contact Us

Email: duke@hongdaherb.com

Let’s elevate your formulations with premium Sophora Japonica Extract Quercetin.