What is Quercetin dihydrate

Quercetin which is also known as quercetin, it is soluble in glacial acetic acid, alkaline solution is yellow, almost insoluble in water, ethanol taste bitter. Quercetin can be used as drugs, has a good expectorant, cough, and have some asthma. There are also some functions about lower blood pressure, increased capillary resistance, reducing capillary fragility, blood fat, expansion of coronary artery, increase coronary blood flow and so on. Quercetin also has a good function for the treatment of chronic bronchitis. Coronary heart disease and hypertension patients also had adjuvant therapy.

Quercetin dehydrate(CAS NO: 6151-25-3) is yellow needles (Ethanol), at 95-97 ° C as anhydrous substance, melting point 314 ° C (decomposition). Quercetin dehydrate 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 is yellow, almost insoluble in water, ethanol taste bitter.

Quercetin dihydrate is usually extracted in Iberian oak Fagaceae skin and leaves, Berberidaceae plant red octagonal lotus, red Hypericum plants Eclipta (Hunan forsythia), oleander plants kenaf.

Quercetin dihydrate has good functions on expectorant, cough, and have some asthma.

Usage 1: Used as antioxidants. Quercetin dihydrate mainly used for oil, drinks, cold drinks, meat processing products.

Usage 2: Used as a natural dye. Quercetin dehydrate used as a medium dye. For wool and cotton, with a yellow aluminum, chromium salts obtained with olive yellow, orange with tin salts obtained with iron was olive green. Good soaping resistant, light medium.

There are several ways to prepare Quercetin dihydrate, here I will briefly show you five kinds of commonly used methods.

1. Recovered from different bioflavonoids quercetin

2. Quercetin and quercetin derivatives different preparation methods

3. Quercetin derivatives and their pharmaceutical use

4. The enzymatic hydrolysis of rutin and quercetin quercetin different preparation methods

5. A quercetin-7-O-rhamnoside Extraction

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