Quercetin Powder

 

Quercetin powder is a naturally occurring flavonoid compound with the chemical name 3,3',4',5,7-pentahydroxyflavone. Its main sources are the following:

 

1. Plant foods

(1) Fruits:

• Apples (the highest content is in the peel, about 4.4 mg/100 g)
• Berries (blueberries, cranberries, blackberries, about 3-8 mg/100 g)
• Citrus (oranges, lemons, mainly in the peel)

 

(2) Vegetables:

• Onions (red onions have the highest content, with the outer bulb reaching 28-48 mg/100 g)
• Broccoli (3.2 mg/100 g)
• Capers (180 mg/100 g, the plant with the highest content in natural sources)

 

(3) Grains and legumes:

• Buckwheat
• Red beans (2.5 mg/100 g)

 

2. Medicinal plants and extracts

 

• Ginkgo biloba leaves
• Hypericum perforatum
• Sophora japonica (buds of Sophora japonica, containing rutin, which can be converted into quercetin)

 

 

Analysis	Specification	Result
Physical Description
Appearance	Yellow Green Powder	Yellow Green Powder
Solubility	Pratically insoluble in water Soluble in aqueous alkaaline sol.	Pratically insoluble in water Soluble in aqueous alkaaline sol.
Melting point	305-315°C	310°C
Mesh size	100% pass 80 mesh	100% pass 80 mesh
Chemical Tests
Assay(HPLC)	95% Min	95.37%
Sulphated ash content	0.50% Max	0.35%
Identification	Positive	Positive
Loss on drying	8.0%-12.0%	9.95%
Heavy Metals	10ppm Max	<10ppm
Pb,Cd,	1ppm Max	<1ppm
As	2 ppm Max	<2 ppm
Hg	0.1ppm Max	<0.1ppm
Microbiological test
Total plate count	1000 cfu/g Max	<1000 cfu/g
Yeast & Mold	100 cfu/g Max	<100 cfu/g
E.Coli	Negative	Negative
Staphylocossue Aureus	Negative	Negative
Pseudomonas aeruginosa	Negative	Negative
Conclusion	Complies with the standards.
Packing and Storage
Packing: Pack in paper-carton and two plastic-bags inside.
Shelf life: 2 year when properly stored.
Storage: Store in a well-closed place with constant low temperature and no direct sun light.

 

 

1. Antioxidant
Quercetin, as a natural antioxidant, protects the body from free radicals and prevents skin aging. It is one of the most well-known and used flavonoids currently.

 

The semiquinone free radical formed by quercetin after losing electrons can be stabilized by resonance, avoiding further initiation of chain oxidation reactions and blocking the lipid peroxidation process.

 

2. Enhance immunity
It improves the immune system's response to pathogens and microorganisms. Eating foods rich in quercetin can prevent the growth of viruses and bacteria and can effectively enhance immunity.

 

3. Anti-inflammatory
Quercetin powder is a powerful natural anti-inflammatory ingredient that blocks the release of substances that cause itching and stinging, reducing allergy symptoms such as nasal congestion, tearing and stinging. After binding to metal ions, it can also inhibit metal ion-dependent pro-oxidases and reduce inflammation-related oxidative damage.

 

 

4. Antibacterial
Due to its antibacterial properties, it helps eliminate so-called bacterial prostatitis, an infection of the prostate caused by microorganisms. This pathology may be caused by a strain of bacteria that affects not only the genitourinary system but also the prostate.

 

5. Anti-tumor
Quercetin can significantly inhibit the effects of cancer-promoting agents, inhibit the growth of isolated malignant cells, and inhibit the DNA, RNA and protein synthesis of Ehrlich ascites cancer cells.

 

Quercetin powder can also inhibit platelet aggregation and selectively bind to thrombus on the blood vessel wall to play an anti-thrombotic role. It can reduce the risk of heart disease and atherosclerosis by reducing the oxidation of LDL cholesterol.

 

6. Increase glutathione

It can increase glutathione (GSH) levels, enhance the activity of γ-glutamylcysteine ​​ligase (GCL), promote GSH synthesis, and maintain the reduced state of cells.

 

 

Target	Recommended dosage	Use with other products
Daily Antioxidant	50-200 mg/day	Combined with Vitamin C (500mg) for enhanced absorption.
Recovery after exercise	500 mg (1 hour before exercise)	Combined with curcumin, it can reduce muscle oxidative damage.
Chronic inflammatory disease	500-1000 mg/day	Liposome encapsulation technology increases bioavailability to 40%.

 

Shipping pictures, shipping country, shipping packaging

 

 

Fruiterco can provide efficient and convenient delivery methods for the products that customers need. For example: air, sea, express, you can rest assured of product quality problems during transportation.

 

We have professional business staff to communicate with you about your product needs and understanding. There is a professional mailbox system, you can leave a message at any time, we will reply as soon as we see it. If you have any product needs, you can leave a message at any time and we will reply as soon as we see it. Contact us for more details: Email: info@fruiterco.com.

 

 

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