Quercetin Dietary supplements: The Premier Flavonoid Powerhouse – Final Information & Premium Supply| Supplier & Manufacturer
1. Qu'est-ce que la quercétine ?
La quercétine est un flavonol alimentaire belonging to the polyphenolic compounds subclass. As a potent plant pigment, it serves vital roles in UV safety and stress response in botanicals. In human physiology, it displays multifunctional bioactivity, appearing as a grasp antioxidant, anti-inflammatory agent, et mobile signaling modulator. Its distinctive catechol construction et α,β-unsaturated carbonyl group allow distinctive free radical scavenging and metallic chelation capabilities.
2. Supply, Chemical Properties & Identification
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Main Natural Sources (Highest Concentrations):
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Sophora japonica Buds: Richest supply (as much as 20% dry weight)
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Onion Skins (Allium cepa): Significantly purple onions (1-1.5%)
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Ginkgo biloba Leaves: Standardized extracts (22-26%)
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Apple Peel (Malus domestica): Key supply of quercetin glycosides
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Different Sources: Capers, lovage, elderberries, buckwheat, tea
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Propriétés chimiques :
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Quantité CAS : 117-39-5
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Composants moléculaires : C₁₅H₁₀O₇
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Poids moléculaire : 302,24 g/mol
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Quantité EINECS : 204-187-1
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Apparence: Poudre cristalline jaune
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Solubilité: Insoluble in water; soluble in ethanol, DMSO, lipids (when complexed)
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Stabilité: Delicate to UV mild and alkaline circumstances; degrades above 160°C
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3. Benefits, Efficacy, Dosage & Security
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Optimum Sources & Bioavailability: Sophora japonica extracts ship the very best pure concentrations (95-98% purity). Bioavailability is enhanced by phospholipid complexation (Quercetin Phytosome®) or liposomal encapsulation, growing absorption by 5-20x vs. commonplace powder.
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Validated Well being Benefits & Mechanisms:
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Systemic Antioxidant Protection: Module Voie Nrf2/ARE, upregulating glutathione synthesis et superoxide dismutase (SOD)
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Mouvement anti-inflammatoire : Inhibe COX-2, LOX, et NF-κB signaling pathways, decreasing pro-inflammatory cytokines (TNF-α, IL-6)
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Modulation immunitaire : Stabilizes mast cells, reduces histamine launch through cAMP phosphodiesterase inhibition
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Cardiometabolic Assist: Improves endothelial perform by eNOS activation, inhibits LDL oxidation
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Viral Protection: Demonstrated 3CL protease inhibition in opposition to coronaviruses in vitro
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Medical Dosage:
Formulation Each day Dose Length Commonplace Powder 500-1000 mg 8 à 12 semaines Phytosome® 250-500 mg Constant Acute Immune Assist As much as 3000 mg ≤5 days -
Security Profile:
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GRAS standing (FDA)
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Keep away from concomitant use with CYP3A4 substrates (cyclosporine, warfarin)
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Potential renal toxicity at >5g/day
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Being pregnant Class C
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4. Shaanxi Zhonghong: Quercetin Excellence
Effet de levier 28 years in bioactive phytochemistry, Shaanxi Zhonghong Investment Technology Co., Ltd. pioneers quercetin manufacturing by:
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Core Improvements:
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Glycoside-to-Aglycone Conversion: Patented enzymatic hydrolysis for >98% aglycone purity
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Nanocrystallization Know-how: 200nm particle measurement for enhanced solubility
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Phytosome® Manufacturing: Validated complexation with sunflower phospholipids
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High quality Infrastructure:
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UPLC-QTOF-MS for isomer profiling
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cGMP et ISO 22000 licensed amenities
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Batch traceability through blockchain expertise
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5. Product Specification (Pharmaceutical Grade)
Classe | Paramètre | Spécification | Technique de vérification |
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Pureté | Quercetin Aglycone | ≥98,0% | HPLC-DAD (EP 10.0) |
Métaux lourds | Plomb (Pb) | ≤ 1,0 ppm | ICP-MS (USP <233>) |
Cadmium (Cd) | ≤ 0,5 ppm | ICP-MS | |
Arsenic (As) | ≤ 1,0 ppm | ICP-MS | |
Pesticides | Chlorpyrifos | ≤ 0,01 ppm | GC-MS/MS |
Cyperméthrine | ≤ 0,02 ppm | GC-MS/MS | |
Complete 186 Pesticides | Préjudiciable | EU SANTE/11813/2017 | |
Microbiologie | Complete Cardio Depend | ≤1000 UFC/g | USP <61> |
Levure et moisissure | ≤100 UFC/g | USP <61> | |
Enterobacteriaceae | Absent/10g | ISO 21528-2 |
6. Flux de travail de fabrication supérieur
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Botanical Sourcing: DNA-authenticated Sophora japonica buds
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Multistage Extraction: Ethanol/water (70:30) at 45°C with microwave help
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Macroporous Resin Chromatography: AB-8 resin for flavonoid isolation
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Enzymatic Bioconversion: β-glucosidase remedy (45°C, pH 5.0)
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Crystallization Management: Anti-solvent precipitation at 4°C
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Nanomilling: Moist-milling to D90 < 250nm
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Phospholipid Complexation (Optionally available): 1:1 ratio with phosphatidylcholine
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Lyophilisation : -40°C main drying
7. Application Matrix
Entreprise | Formulation Examples | Useful Position |
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nutraceutiques | Immune complexes, sports activities formulation | Oxidative stress discount |
Médicaments sur ordonnance | Antiviral adjuvants, cardioprotectives | Endothelial perform modulation |
Cosméceutiques | Anti-pollution serums, UV protectants | MMP inhibition |
Repas utiles | Stability-enhanced drinks | Shelf-life extension |
8. Mechanism & Medical Proof
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Biogenèse mitochondriale : Invites Voie SIRT1/PGC-1α (5-15% improve in ATP manufacturing)
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Senescence Modulation: Réduit p16INK4a expression in human fibroblasts
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Viral Inhibition: IC₅₀ = 7.6 μM in opposition to SARS-CoV-2 3CL protease
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Cardiometabolic Results: 12% LDL discount in hyperlipidemic sufferers (500mg/day, 8 weeks)
9. Technological Frontiers
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Bioavailability Options:
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Quercetin-β-cyclodextrin complexes (water solubility: 35 mg/mL)
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Strong lipid nanoparticles (90% oral bioavailability)
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Inexperienced Chemistry:
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Extraction d'eau sous-critique (SWE) at 120°C/50 bar
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Enzyme-assisted deep eutectic solvent techniques
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10. Analysis Challenges
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Pharmacokinetics: Quick plasma half-life (3-4 hours)
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Traduction médicale : Restricted Part III trials for immune claims
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Statut réglementaire : Novel Meals authorization required in EU
11. FAQ
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Q: Why select Sophora japonica-derived quercetin?
UN: Superior focus profile (98% vs. 70% in onion extracts) and decrease pesticide danger. -
Q: The best way to overcome bioavailability limitations?
UN: Our phytosome expertise achieves Cₘₐₓ 4.3x greater than commonplace powder. -
Q: Validated immune help dosage?
UN: 500-1000mg/day prophylactic; 3000mg/day acute part (max 5 days). -
Q: Stability in formulations?
UN: Nanoencapsulated type retains >90% efficiency at 25°C/60% RH for twenty-four months. -
Q: GMP compliance?
UN: Manufactured underneath ICH Q7 pointers with ISO 17025 accredited QC.
12. Procurement Info
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Technical Dossiers: liaodaohai@gmail.com
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Order Portal: aiherba.com/quercetin
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Quantité minimale de commande : 1kg (R&D), 10kg (business)
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Logistique: -20°C validated chilly chain transport
13. Conclusion
La quercétine représente la apex of flavonoid bioactivity with clinically validated impacts on immune competence, bien-être métabolique, et oxidative resilience. Shaanxi Zhonghong’s fabrication intégrée verticalement—from DNA-verified Sophora japonica à nanoparticle-enhanced supply techniques—ensures unprecedented purity (≥98%) and bioavailability. Our patented enzymatic conversion expertise and Fabrication conforme aux BPF ship benchmark materials compliant with USP, EP, and JP monographs. Accomplice with our 28 ans d'expérience for quercetin options powering next-generation nutraceuticals, prescription drugs, and useful meals.
14. Références
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Li Y, et al. (2021). Molécules. 26(9):2507. [Bioavailability]
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Colunga Biancatelli RML, et al. (2020). Entrance Immunol. 11:1451. [Antiviral]
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EFSA Panel (2020). Journal de l'EFSA. 18(1):e05993.
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Anand David AV, et al. (2016). J Meals Sci. 81(10):R2501. [Metabolism]
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Zhonghong Technical File QRC-2024. aiherba.com/docs/QRC-Spec
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