Why choose us:

More Than 22 Years Quercetin Powder Manufacturers and Suppliers!

1.Focused on the development of plant active ingredients for more than 22 years and has a number of national invention patents.

2. International certification system: ISO9001, ISO22000, IP (non GMO), Jewish, halal, organic and other certification.

3. Professional and experienced r&d team: professors from famous universities and experts with decades of working experience in this industry.

4. Provide diversified products: the products have been applied to all major international brands in the fields of drugs, dietary supplements, cosmetics, animal nutrition and functional food.

Quercetin is a bioflavonoid and a natural pigment found in numerous foods. Onions and grapes are the best food sources of quercetin. Quercetin’s unique properties allow it to interact synergistically with other bioflavonoids, and it may improve the absorption of other supplements as well.

Quercetin is an effective antioxidant, and it scavenges free radicals. Free radicals can damage cells and cause oxidative stress. Antioxidants prevent free radicals from accumulating and causing health problems. Quercetin also has anti-inflammatory properties and helps support the immune system .

Quercetin is natural extracted from Sophora Japonica. Quercetin, alcohol solution is very bitter.Can be used as medicine, has a better expectorant, cough, and a certain antiasthmatic effect.In addition, there are lower blood pressure, enhance capillary resistance, reduce capillary brittleness, reduce blood fat, expand coronary artery, increase coronary blood flow and other effects.For the treatment of chronic bronchitis.Coronary heart disease and hypertension patients also have adjuvant treatment.

Product Code	Specifications	Analytical method	Bio Origin
	Quercetin Dihydrorate 95%	HPLC	Sphora japonica
	Quercetin Dihydrorate 98%	UV	Sphora japonica
	Quercetin (anhydrous) 95%	HPLC	Sphora japonica
	Dihydroquercetin 97%	HPLC	Sphora japonica
*Customized specifications available upon request

sophora japonica

Plant source：Sophora japonica L.

Product Specification

Item	Specification	Method Result
Physical Property
Appearance	Fine powder	Organoleptic Conforms
Color	Green Yellow	Organoleptic Conforms
Odour	Characteristic	Organoleptic Conforms
Tasted	Characteristic	Organoleptic Conforms
Mesh Size	100% through 80 mesh size	USP36 Conforms
General Analysis
content	≥98.0%	Titration	98.35%
Loss on Drying	≤5.0%	Eur.Ph.6.0[2.2.32]	2.10%
Ash Content	≤5.0%	Eur.Ph.6.0[2.4.16]	2.21%
Contaminants
Heavy Metal	10ppm Max	Eur.Ph.6.0[2.4.10] Conforms
Pesticides Residue	Negative	USP36<561> Negative
Residual Solvent	200ppm	Eur.Ph6.0<2.4.10> Conforms
Lead(Pb)	2ppm Max	Eur.Ph6.0<2.4.10>	Conforms
Arsenic(As)	2ppm Max	Eur.Ph6.0<2.4.10>	Conforms
Cadmium(Cd)	1ppm Max	Eur.Ph6.0<2.4.10> Conforms
Mercury(Hg)	0.1ppm Max	Eur.Ph6.0<2.4.10> Conforms
Microbiological
Total Plate Count	≤1000cfu/g Max	USP35<965> 150cfu/g
Yeast &Mold	≤100cfu/g Max	USP35<965> 50cfu/g
E.Coli.	Negative	USP35<965> Negative
Salmonella	Negative	USP35<965> Negative
Staphylococcus	Negative	USP35<965> Negative

Main Functions:

1. Quercetin is a potent antioxidant and has anti-inflammatory activity, protecting cellular structures and blood vessels from the damaging effects of free radicals.

2. As an antioxidant, it reduces LDL cholesterol and offers protection from heart disease.

Application

1.Applied in pharmaceutical field

2.Applied in food field

Packaging