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Quercetin is a kind of natural flavonoid compounds. Quercetin flavonoid widely exists in the sophora japonica of leguminous plants. Natural quercetin mainly comes from the enzymolysis of rutin in yellow needle crystal, widely used in food, pharmaceutical and nutracuetical industries.

For different diseases, quercetin has various funtions: quercetin for allergies, quercetin anti inflammatory, quercetin antihistamine, quercetin antioxidant, quercetin for immune support, quercetin for seasonal allergies and etc.

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Buy Quercetin CAS No.6151-25-3
Product Information of Quercetin CAS No.6151-25-3

Product NameQuercetin
Herbal SourceSophora Japonica L.
CAS No.6151-25-3
Molecular FormulaC15H14O9
Specification95.0%
Test MethodHPLC
AppearanceLight yellow needle crystal
SolubilityVery slightly soluble in diethyl ether, not soluble in cold water, difficultly soluble in hot water. The solution is yellow when soluble in acetic acid and alkaline solution.

Benefits of Quercetin CAS No.6151-25-3
The benefits of quercetin exist in many fields, as following:

Quercetin benefits for nutraceutical industry:

1. Nature made quercetin has a good effect on expectorant, antitussive and antiasthmatic.

2. Natural quercetin supplements can decrease blood pressure and blood fat.

3. Quercetin health benefits are to enhance the resistance of the capillaries and reduce fragility of the capillary.

4. Benefits of taking quercetin are the possibilities of expanding coronary arteries and increasing coronary blood flow.

5. Quercetin benefits for hair with a promotion to the growing of hair.

Cosmetics:

1. Quercetina, sourced from sophora japonica flowers, can prevent the formation of melanin, reduce the number of melanin produced within the cell, and has a good whitening effect.

2. Quercetina can remove hydroxyl radicals, superoxide radicals, and has a strong antioxidant capacity to slow the skin ageing.

3. Pure quercetin has a certain inhibitory effect on E. coli and staphylococcus aureus, and can be used as a natural anti-corrosion ingredient of cosmetics.

Food and Flavors:

Quercetin powder can be added to food as a natural preservative and antioxidant.

Quercetin Uses
There are various uses of quercetin, such as being health products and cosmetics. Also, being plant extract as food preservative, it can be used in food.

TDS of Quercetin CAS No.6151-25-3
Assay ItemStandardTest Result
Assay( on dry Product)≥95.0%≥95.0%（HPLC）
IdentifyIRIR
AppearanceYellow powderConforms
OdorNone to slightConforms
Heavy metals≤10ppm＜10ppm
As≤1ppm＜1ppm
Cd≤1ppm＜1ppm
Pb≤1ppm＜1ppm
Hg≤0.1ppm＜0.1ppm
Sulphate≤0.1%＜0.1%
Reducing sugarNegativeNegative
Water≤12.0%Conforms
Sulphated ashes≤0.2%Conforms
Particle size100% Through 80 meshConforms
Bacteria≤1000cfu/g＜10cfu/g
Mould and Yeast≤100cfu/g＜10cfu/g
SalmonellaNegativeNegative
Escherichia coliNegativeNegative

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