|Melting point||314-317°C||Boiling point||363.28°C (rough estimate)|
|Density||1.3616 (rough estimate)||Refractive index||1.4790 (estimate)|
|Storage conditions||Store at 0-5°C||Water solubility||<0.1 g/100 mL at 21 ºC|
|Merck||13,8122||CAS||117-39-5(CAS DataBase Reference)|
Quercetin is a kind of expectorant commonly used in traditional Chinese medicine. It has good antitussive and antitussive effects, and also has certain antiasthmatic effects. It also lowers blood pressure, increases capillary resistance, and reduces capillary blood vessels. The pharmacological function of brittleness, hypolipidemicemia, dilatation of coronary arteries, and increase of coronary blood flow.
Clinical quercetin is mainly used for bronchitis and polypion inflammation. It also has an adjuvant treatment effect on patients with coronary heart disease and hypertension. This product can have dry mouth, dizziness and burning sensation in the stomach area. It can disappear after stopping the drug.
Quercetin is widely found in angiosperms, such as red tube, cat's eye grass, iron-clad gold, Manchurian red, small leafhopper, purple rhododendron, Zhaoshan white, dwarf tea, and apocynum, which is a kind of cockroach. Yuan, this kind of alum often exists in the form of bismuth in combination with sugar, such as quercetin, rutin, and hyperoside.
1. Antioxidant. Mainly used in oils, beverages, cold drinks, meat processing products.
2. It has good antitussive, antitussive and antiasthmatic effects, and is used for the treatment of chronic bronchitis. It also has adjuvant treatment for patients with coronary heart disease and hypertension.
|Yellow needle-like crystalline powder. Stable to heat, decomposition temperature 314 ° C. It can improve the light resistance of the pigment in food and prevent the change of the flavor of the food. It will change color when it meets metal ions. Slightly soluble in water, soluble in alkaline aqueous solution. Quercetone and its derivatives are a class of flavonoid compounds widely found in various vegetables and fruits. Such as onions, sea buckthorn, hawthorn, alfalfa, tea and so on. It has anti-free radical, anti-oxidation, anti-bacterial, anti-viral and anti-allergic effects. When used in lard, etc., various antioxidant indexes are similar to BHA or PG.|
Because there are double bonds between the 2 and 3 positions, and 2 hydroxyl groups at 3' and 4', it has the function of being a free radical acceptor generated during oxidation of metal chelate or oil, and thus can be used as ascorbic acid or Antioxidant for oils and fats. Diuretic effect.