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Sophora Japonica Extract Extracting Chemicals From Plants Quercetin 98%

Sophora Japonica Extract Extracting Chemicals From Plants Quercetin 98%

Brand Name : STA
Model Number : STA-74
Certification : ISO,KOSHER,
Place of Origin : CHINA
MOQ : 1kg
Price : negotiate
Payment Terms : Western Union, T/T, L/C
Supply Ability : 1000kg/month
Delivery Time : 3-5 work days
Packaging Details : 1kg/bag,25kg/drum
Type : herbal extract
Extraction Type : Solvent Extraction
Specification : 98% HPLC
Appeareance : light yellow powder
Source : Sophora japonica
Form : Powder
Part : leaf
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Sophora Japonica Extract Extracting Chemicals From Plants Quercetin 98%

What is Quercetin?

Quercetin is a flavonoid widely distributed in nature. The name has been used since 1857, and is derived

fromquercetum (oak forest), after Quercus. It is a naturally-occurring polar auxin transport inhibitor.

Quercetin is the aglycone form of a number of other flavonoid glycosides, such as rutin and quercitrin, found

in citrus fruit, buckwheat and onions. Quercetin forms the glycosides quercitrin and rutin together with rhamnose

and rutinose, respectively. Likewise guaijaverin is the 3-O-arabinoside, hyperoside is the 3-O-galactoside,

isoquercitin is the 3-O-glucoside and spiraeoside is the 4'-O-glucoside. CTN-986 is a quercetin derivative found in

cottonseeds and cottonseed oil. Miquelianin is the quercetin 3-o-β-d-glucuronopyranoside.

Quercetin HPLC 98%

Main Contents: Quercetin

Synonym(s): 2-(3,4-dihydroxyphenyl)- 3,5,7-trihydroxy-4H-chromen-4-one

Product Specification: 98% HPLC

Appearance: yellow powder

Extract Solution: Water/ Ethyl Acetate

Molecular formula and weight: C15H10O7, 302.236

Melting Point: 316 °C

AppearanceYellow, crystalline powderYellow, crystalline powder
SolubilityPractically insoluble in waterComplies
Soluble in aqueous alkaline sol.Complies
IdentificationMust positiveComplies
Loss on drying≤8-12%10.5%
Sulphated ash≤0.2%0.15%
Heavy Metal≤10PPM<10PPM
Mesh Size100% pass 80 meshComplies
Assay (HPLC)95%95.36%
Microbiological test
Total plate count≤1000CFU/gComplies
Yeast & Mould≤100CFU/gComplies

The features of Quercetin:

quercetin is a potent antioxidant and has anti-inflammatory activity, protecting cellular structures and blood vessels from the damaging effects of free radicals. It improves blood vessel strength. Quercetin inhibits the activity of catechol-O-methyltransferase that breaks down the neurotransmitter norepinephrine. This effect may lead to elevated levels of norepinephrine and an increase in energy expenditure and fat oxidation. It also means quercetin acts as an antihistamine leading to relief of allergies and asthma. As an antioxidant, it reduces LDL cholesterol and offers protection from heart disease. Quercetin blocks an enzyme that leads to accumulation of sorbitol, which has been linked to nerve, eye, and kidney damage in diabetics.


1.expectorative effect and a cough

2.lower blood pressure,

3.and enhance capillary resistance

4.reduce blood capillary brittleness,

5.fall hematic fat, dilating coronary artery,

6.and increased coronary blood flow

Product Tags:

pure herbal extracts


herbal extract powder

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