Quercetin Dihydrate 6151-25-3

95% by HPLC, 98% by UV

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Product Information

Product name	Quercetin Dihydrate
CAS No.:	6151-25-3
Plant used Part	Flos sophorae bud
Extraction Type	Water and ethanol
Specification	95%HPLC,98%UV, Food grade. Or customized according to your requirement.
Appearance	Yellow to greenish-yellow fine powder

COA of Quercetin Dihydrate

ITEMS	SPECIFICATION	RESULT
Organoleptic Test
Appearance	Yellow to greenish-yellow fine powder	Complies
Odor& Taste	Characteristic without off-flavor	Complies
Analytical Data
Quercetin	≥ 95%	97.29%
Loss on Drying	≤ 5%	2.60%
Partical Size
% through 80 mesh	> 95	Complies
Solvents Residue
Ethanol	≤ 3000 mg/kg	< 7.0mg/kg
Methanol	≤ 200 mg/kg	Not detected
Heavy Metals
Arsenic	≤ 0.5mg/kg	Not detected
Lead	≤ 0.5mg/kg	0.13 mg/kg
Cadmium	≤ 0.5mg/kg	Not detected
Mercury	≤ 0.5mg/kg	0.0065 mg/kg
Pesticide Residue	USP34-NF29<561>2011 (maximum residual limits)	Not detected
Aflatoxins	≤ 20 ppb	Not detected
Microbiological control
Aerobic Plate Count	≤10000 cfu/g	< 10 cfu/g
Yeast and mold	≤ 100 cfu/g	< 10 cfu/g
Coliforms	≤ 10 cfu/g	< 10 cfu/g
Enterobacteriaceae	≤ 10 cfu/g	Complies
Bacillus cereus	≤ 125 cfu/g	Complies
E. Coli STEC(Shiga Toxin-producing E coli)	Negative	Complies
Listeria species	Negative	Complies
Salmonella	Negative	Complies
Staphylococcus Aureus	Negative	Complies

Usage

Quercetin is extracted from sophora japonica bud. Quercetin has been used to relive cough in Chinese clinical medicine. Quercetin is soluble in glacial acetic acid, yellow in alkaline solution, almost insoluble in water, and bitter in alcohol solution.It has good expectorant and antitussive effects and has a certain antiasthmatic effect. In addition, it also lowers blood pressure, enhances capillary resistance, reduces capillary fragility, lowers blood lipids, dilatation of coronary arteries, and increases coronary blood flow. It is used for the treatment of chronic bronchitis. It also has adjuvant therapy for patients with coronary heart disease and hypertension.

Application of Quercetin:

1. Quercetin can relieve cough.
2. Quercetin may lower blood pressure.
3. Quercetin may reduce blood fat.
4. Quercetin may improve capillary resistance.
5. Quercetin has good antioxidant effect.
6. Quercetin has anti-inflammatory property.
7. Quercetin is a kind of natural dye for clothes.