Quercetin is a flavonol compound with multiple biological activities widely distributed in the plant kingdom. Its chemical formula is C15H10O7.
Pure quercetin powder is widely found in the stem bark, flowers, leaves, buds, seeds and fruits of many plants, mostly in the form of glycosides, such as rutin, quercetin, hypericin, etc. Quercetin can be obtained by acid hydrolysis.
Among them, the content is higher in buckwheat stems and leaves, seabuckthorn, hawthorn and onion. Quercetin is also found in many foods, such as onions, shallots, asparagus, cabbage, mustard, green pepper, chicory, grapefruit, lettuce, hawthorn, apple, mango, plum, radish, blackcurrant, potato and spinach. In addition, it is contained in more than 100 kinds of medicinal plants (such as sophora japonica, platycladus orientalis leaves, alpinia officinalis, coltsfoot flower, Taxillus chinensis, panax notoginseng, ginkgo, elderberry, etc.).
The research on the content of quercetin in tea, fruit juice and wine shows that the content of quercetin in some drinks (such as beer, coffee, chocolate milk, Baijiu) is below 1 mg/L, while the content of quercetin in red wine is 4-16 mg/L, and grape juice is 7-9 mg/L; In fruit juice, except lemon juice (7 mg/L) and tomato juice (13 mg/L), which contain higher quercetin content, other fruit juices contain lower quercetin content, generally below 5 mg/L; Quercetin content in tea is the highest (10-25 mg/L).
Pure quercetin powder, as a kind of natural flavonoids widely existing in nature, has been deeply studied. At present, it has been found that it has multiple biological activities, such as anti-oxidation, anti-virus, anti-inflammatory effects, and can be used to treat liver, heart, spleen, lung, kidney, orthopedic diseases, nervous system diseases, etc. in cell and animal experiments.
Antioxidation
Quercetin is a natural chelating agent, which can chelate iron in the body, reduce iron overload in the body, and reduce oxidative damage caused by iron overload.
Quercetin has many effects, such as anti-oxidation, scavenging free radicals, inhibiting lipid peroxidation, etc. It can resist oxidation, protect cardiovascular health.
Heart protection
Quercetin can reduce blood pressure, enhance capillary resistance, reduce capillary fragility, reduce blood lipid, expand coronary artery, increase coronary blood flow, etc. It also has an auxiliary therapeutic effect on patients with coronary heart disease and hypertension.
Quercetin can effectively reduce H2O2 mediated oxidative damage to cardiomyocytes, thereby inhibiting cardiomyocyte apoptosis. The treatment of quercetin significantly reduced the number of ventricular premature beats, indicating that quercetin has a significant cardioprotective effect on coronary heart disease.
Antiviral activity
Quercetin can significantly reduce the replication rate of HCV. It was also found that the infectivity of virus particles treated with quercetin decreased by 65%, indicating that quercetin affected the integrity of the virus. It was further confirmed through molecular level experiments that quercetin can play an antiviral role by preventing HCV from up regulating diacylglycerol acyltransferase and the typical location of HCV core protein on the surface of lipid droplets.
Summarizing the current research results, it has antioxidant, anti-inflammatory, anti-virus, anti-tumor, hypoglycemic, lipid-lowering, immune regulation and other biological activities and extensive pharmacological effects, and has very important clinical significance in the treatment of bacterial infection, viral infection, tumor, diabetes, hyperlipidemia and immune system diseases.
Natural Field is a pure quercetin powder manufacturer and supplier and we have nearly 20 years of experience in the natural ingredients industry. We offer the best quercetin powder at wholesale price. And its quercetin powder has been lab-tested and verified for both product purity and identity.
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