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Email ：PharmaSources@imsinoexpo.com
Whatsapp ：+86-13621645194
Main Sales Markets: North America,Central/South America,Western Europe,Eastern Europe,Australasia,Asia,Middle East,Africa
Delivery Lead Time: 3-7days
Sample Provided: yes
Payment Terms: T/T
Sophora Japonica Bud Extract Quercetin Powder
Main Specifications: Quercetin Dihydrate 95%; Quercetin Anhydrous 95%, 98%(USP)
Quercetin is extracted from sophora japonica bud. Quercetin is green yellow powder with bitter taste, slightly soluble in water, easily soluble in alkaline solvent.
Usually quercetin refers to quercetin dihydrate. Moisture of quercetin dihydrate is 8%-12%, while it is less than 4% for quercetin anhydrous. The crystal water in the molecules of quercetin anhydrous has been removed.
Quercetin has antiviral, antibacterial, antioxidant, antiallergic and antithrombotic properties. Quercetin helpful to relive cough, reduce blood pressure and blood fat, and improve capillary resistance. Quercetin powder is used as an ingredient in dietary supplements, beverages, and foods.
Please contact us or just send an inquiry to get free sample and discuss purchase process and shipping details.
Pictures
The Chromatogram of Quercetin
Certificate of Analysis
General Information
Product Name
Quercetin Anhydrous
Part Used
Sophora Japonica Bud
Item
Specification
Method
Result
Physical Property
Appearance
Green Yellow Powder
Organoleptic
Conforms
Loss on Drying
≤3.0%
HB43-S Moisture Meter
2.80%
Ignition Ash
≤2.0%
USP37<561>
1.30%
Mesh Size
98% Through 80 Mesh
Organoleptic
Conforms
Contaminants
Hg
≤0.1mg/Kg
Atomic Absorption
Conforms
Pb
≤3.0 mg/Kg
Atomic Absorption
Conforms
As
≤2.0 mg/Kg
Atomic Absorption
Conforms
Cd
≤1.0 mg/Kg
Atomic Absorption
Conforms
Microbiological
Total Plate Count
≤1000cfu/g
USP30<61>
Conforms
Yeast&Mold
≤500cfu/g
USP30<61>
Conforms
E.Coli
Negative
USP30<62>
Conforms
Salmonella
Negative
USP30<62>
Conforms
Shelf Life
24 Months under the conditions below,no antioxidant used
Package
Standard packed in fiber-drum and two plastic bags inside. Net weight: 25kg. Dimension: I.D.35*H51cm.
Storage
Store in a cool,dry place away from Moisture,Light,Oxygen
Audited Supplier
Pharma Sources Insight July 2025
