Antioxidant & Anti-Inflammatory Properties - Quercetin




Quercetin is a flavonoid (plant pigment) commonly found in fruits and vegetables, especially onions, citrus, apples, dark berries, grapes, olive oil, green tea, red wine etc. The primary benefit of quercetin is that it possesses potent antioxidants and anti-inflammatory properties. Antioxidants fight against free radicals (chemically reactive compounds that damage cell membranes and DNA). Anti-inflammatories lower the release of histamines (a compound that is released by cells in response to allergic and inflammatory reactions).





Quercetin belongs to flavonoids with material of flavonols, rutin quercetin is an important derivatives. They are common in human dietary flavonoids substances, and some effective components of Chinese herbal medicine. According to reports in the literature quercetin in vitro can be removed by directly active oxygen free radicals, chelating metal ion, inhibit LDL and play a role of the antioxidant DNA oxidative damage. The past don't think flavonoids substances are absorbed or rarely absorption, in recent years, some studies have shown that a significant number of quercetin can be absorbed by the small intestine into the body.



Quercetin in vitro for a variety of free radical scavenging effect has been proved by many experiments. Kuo based on flavonoids compounds such as chelating metal ion will cause the principle of the absorption spectra change determination found that quercetin chelating metal ion ability stronger than rutin. Terao etc. The study found that when the cell membrane phospholipids bilayer is water soluble oxygen free radicals attack, quercetin compared with vitamin E is a more effective antioxidant. Silva, compared the quercetin with vitamin C to induce rabbit reticulocyte 15 lipoxygenase LDL, the effect of peroxide found that quercetin on 15 lipoxygenase inhibition was stronger than vitamin C. Kaneko, such as flavonoids substances and vitamin E was studied in linoleic acid hydroperoxide (LOOH) induced cytotoxicity inhibition, found that the strongest inhibitory effect of quercetin, we take the total antioxidant force as evaluation index, find the same concentration of quercetin in vitro antioxidant effect than rutin, with traditional antioxidant vitamin C, vitamin E.




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Antioxidant & Anti-Inflammatory Properties - Quercetin

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