Service Hotline
Home > Quality > Content

Product Categories

Do you know quercetin?

Xi'an Rainbow Bio-Tech Co.,Ltd | Updated: Apr 19, 2016

Quercetin, also known as quercetin, quercetin, dissolved in glacial acetic acid, alkaline aqueous solution is yellow, almost insoluble in water, ethanol taste bitter. Can be used as drugs, it has a good expectorant, cough effect, and have some asthma. There are also lower blood pressure, enhance capillary resistance, reduce capillary fragility, blood fat, expansion of coronary artery, increase coronary blood flow and so on. For the treatment of chronic bronchitis. Coronary artery disease and high blood pressure also have adjuvant therapy.


Physical Properties

Dihydrate yellow needles (Ethanol), at 95-97 ° C to become an anhydride, m.p. 314 ° C (decomposition). Can be dissolved in cold ethanol (1: 290), soluble in hot ethanol (1:23), soluble in methanol, ethyl acetate, acetic acid, pyridine, acetone, insoluble in water, benzene, ether, chloroform, petroleum ether, etc., an alkaline aqueous solution as a yellow, almost insoluble in water, ethanol taste bitter.


Oxidation resistance

Quercetin is quercetin, the molecule has a double bond between the 2,3, 37, 47 located there it has two hydroxyl groups can be used as a metal chelation or oil and other oxidation process produces free radicals in the body to accept the function can be used as grease, antioxidant ascorbic acid.


Plant sources

Fagaceae Quercus iberica Iberian oak bark and leaves Berberis plants red octagonal lotus Dysosma veitchii (Hemsl. Et Wils.) Fu, red Hypericum plants Eclipta (Hunan forsythia) Hypericum ascyron L. Full grass, oleander plants kenaf Apocynum lancifolium Rus. leaves.


Role purpose

This product has a good expectorant, cough effect, and have some asthma. Mouse oral LD50 of 160mg / kg.

[A] use of antioxidants. Mainly used for oil, drinks, cold drinks, meat processing products.

[B] use a natural dye. Dyes can be used as the medium. For wool and cotton, with the aluminum to give a yellow, olive yellow was used chromium salts, tin salts of an orange, olive green and ferric too. Soaping good, light medium.