Quercetin Extract

Quercetin Extract

Other Name: Meletin, Sophoretin

Herb Source: Scphora japonica L.

Part Used: Flower Bud

Appearance: Light Yellow Fine Powder

Specification: 95%, 98%

Test Method: HPLC

CAS#: 6151-25-3

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Product Details

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Quercetin is a plant pigment (flavonoid). It is found in many plants and foods, such as red wine, onions,green tea, apples, berries, Ginkgo biloba, St. John's wort, American elder, and others. Buckwheat and sophora japonica have a large amount of quercetin. People use quercetin as a medicine.

Quercetin dissolved in glacial acetic acid, alkaline aqueous solution was yellow, almost insoluble in water, ethanol solution taste bitter. It can be used as drugs, has a good expectorant, cough effect, and some asthma. It also used for lowering blood pressure, increasing capillary resistance, reducing capillary fragility, expansion of coronary artery, play the role of the increase in coronary blood flow. For the treatment of chronic bronchitis. that is usefull of adjuvant therapy in patients with coronary heart disease and hypertension.



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1. Expel phlegm and arrest coughing, it has the function of antiasthmatic.

2. Lower blood pressure.

3. Enhance capillary resistance.

4. Blood capillary brittleness,

5. Quercetin Extract Fall hematic fat.

6. Dilate coronary artery and increase coronary blood flow.

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1. Applied in pharmaceutical field, quercetin powder is usually used as raw material for tablets, capsule and granule to warm the kidney, streng then the spleen and enhance human immunity.

2. Applied in food field, quercetin is mainly used in kinds of beverage, liquor and foods to enhance human immunity and anti-aging.

3. Quercetin can be used in health care and supplement field as raw material.

4. Quercetin can be used in cosmetic field.


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Quercetin Extract

25kg/Fiber Drum (35 cm* 53 cm), Double plastic bag inside;

1Kg/Aluminum foil bag, with single plastic inside, and carton outside;

And other package, or as your requirements.



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Quercetin Extract

Delivery: Sea/ Air Shipping & International Express  

Shipping Time: 2-3 working days after payment  

Storage: Kept away from strong light and heat.                                                                                    

Shelf Life: 24 months


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Q1: Are you manufacturer or trading company for Quercetin Extract?

A:We are trader with ISO22000,Kosher,Halal,HACCP certified over 10 years.


Q2:How can we guarantee you receive a good quality ?

A: Our own factory comply to GMP standard and run with strict quality control,every batch of the product must be tested and ensure the quality before shipment.


Q3: What’s the delivery and shipping ?

A:For sample,around 1-3days to be sent out upon receipt of payment by


For small order, please expect 3-7days by DHL. FedEx,TNT,UPS EMS or SF.

For bulk order, around 2 weeks to finish production from order confirmation,will be delivered by air or sea as customer requested.


Q4: Can I get some sample to test the quality?

A: Of course you can, a 20g-30g free sample is available for you to test.


Q5: What’s the payment?

A: We accept T/T,L/C,D/A,D/P,Western Union,Paypal.


Q6:What is your package and storage?

A:25kg per paper drum with double layer poly bag inside.

Store in cool and dry place, keep away from strong light and heat.


Q7:What is your return service policy?

A: We offer a 45days guarantee on receipt of goods without any damage to packing. We will return your money if our products don’t conform to your approved quality.

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