Quercetin

Quercetin, also known as Quercetin or Quercetin, was discovered by Hungarian physiologist Szent Gyorgyi in 1936. Melting point 314 ℃, soluble in ethanol, methanol, ethyl acetate, glacial acetic acid, pyridine, acetone, etc., insoluble in water, benzene, ether, chloroform, petroleum ether, etc. The alkaline aqueous solution is yellow and almost insoluble in water, with a bitter taste.

Quercetin is widely present in the stem bark, flowers, leaves, buds, seeds, and fruits of many plants, mostly in the form of glycosides such as rutin, quercitrin, and hyperoside. Quercetin can be obtained by acid hydrolysis. Among them, the content of Sophora japonica flower, buckwheat stems and leaves, sea buckthorn, hawthorn, and onions is relatively high. The rutin content of quercetin in Sophora japonica is over 20%. The feasibility of extracting rutin from Sophora japonica and then hydrolyzing it with acid to produce quercetin has been proven.

Quercetin is a yellow powder, and its dihydrate is a yellow needle shaped crystal. Melting point 314 ℃, soluble in ethanol, methanol, ethyl acetate, glacial acetic acid, pyridine, acetone, etc., insoluble in water, benzene, ether, chloroform, petroleum ether, etc. The alkaline aqueous solution is yellow and almost insoluble in water, with a bitter taste. It has antioxidant properties, can be used as a medicine, has good expectorant and cough relieving effects, and has a certain anti asthmatic effect. In addition, it has the effects of lowering blood pressure, enhancing capillary resistance, reducing capillary fragility, lowering blood lipids, dilating coronary arteries, and increasing coronary blood flow. Used to treat chronic bronchitis, it also has an adjuvant therapeutic effect on patients with coronary heart disease and hypertension.

Specification:

  • 95%  HPLC

  • 98%  UV

The Main Health Function of Quercetin

1. Antioxidant

Quercetin, as a potent antioxidant, can effectively neutralize free radicals in the body, thereby delaying the process of cellular aging.

2. Anti inflammatory

Quercetin can prevent the concentration of neutrophils in the inflamed area, thereby reducing the intensity of the inflammatory response, and is suitable for treating conditions such as muscle sprains, rheumatoid arthritis, acne, etc.

3. Antithrombotic therapy

Quercetin can prevent platelet aggregation in damaged areas of blood vessels, thereby reducing the risk of thrombosis, and is suitable for the treatment of diseases such as coronary heart disease, stroke, and deep vein thrombosis in the lower limbs.

4. Anti allergy

Quercetin can reduce the release of histamine, thereby alleviating allergic symptoms, and is suitable for the treatment of allergic rashes, eczema, rhinitis, and other allergic symptoms.

5. Reduce blood sugar

Quercetin can promote the liver to produce liver glycogen, thus reducing the glucose content in the blood. It can be applied to the treatment of diabetes patients or the control of blood sugar in people with slightly higher blood sugar levels.

6. The effect of reducing blood lipids

Quercetin can promote liver to increase low-density lipoprotein intake, inhibit adipocyte production, and can be used to treat hyperlipidemia.

7. The analgesic effect

Quercetin can inhibit prostaglandin synthesis, reduce transmission mediators, exert analgesic effects, and treat diseases such as dysmenorrhea, gouty arthritis, and osteoarthritis.

8. Cardiovascular protective effect

Quercetin can dilate blood vessels, lower blood pressure, improve endothelial function, alleviate myocardial hypertrophy, inhibit the proliferation and hypertrophy of vascular smooth muscle cells, and has anti thrombotic effects. These characteristics make quercetin have potential application value in the prevention and treatment of cardiovascular diseases such as coronary heart disease, cerebral infarction, and lower limb venous thrombosis.

9. Antitussive and anti asthmatic effects

Quercetin has good expectorant and cough relieving effects, as well as a certain anti asthmatic effect. It has certain therapeutic effects in treating respiratory diseases such as chronic bronchitis and asthma.

Shelf Life  2 years

Storage

  • Protected from light.

  • Keep in cool and dry place with good air circulation.

Package  25kg/drum