quercetin

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quer·ce·tin

(kwer'sĕ-tin),
An aglycon of quercitrin, rutin, and other glycosides; occurs usually as the 3-rhamnoside; used in the treatment of abnormal capillary fragility.
Synonym(s): meletin, sophoretin

quercetin

(kwûr′sĭ-tĭn)
n.
A yellow powdered crystalline compound, C15H10O7, occurring as a glycoside in the rind and bark of numerous plants or synthesized and thought to have antihistaminic, anti-inflammatory, and antitumor properties.

quercetin

[kwur′sitin]
a yellow, crystalline, flavonoid pigment found in oak bark, the juice of lemons, asparagus, and other plants. It is used to reduce abnormal capillary fragility.

quercetin

The flavonoid alglucon of quercitrin, or rutin, and other glycosides, which is a widely distributed antioxidant present in fruits and vegetables, such as broccoli, Brussels sprouts, cabbage and oranges, as well as in rinds, barks, clover blossoms and pollen. Early data indicates that quercetin has antiviral, anti-inflammatory, and anticarcinogenic activity; it has been used for fibromyalgia, metabolic syndrome and as a monoamine oxidase inhibitor.

quercetin (kwerˑ·s·tn),

n flavonoid derived from red wine, citrus, onions, parsley, and tea. Has been used as an antioxidant, antiviral, and reported to help allergies, prostate inflammation, interstitial cystitis, atherosclerosis, and cataracts. Caution in patients taking anticoagulant or antiplatelet medications. Also called
quercetin chalcone.
References in periodicals archive ?
Indeed, the effects of quercitin have been extensively investigated in animal models of CVDs, especially with regard to its antihypertensive effects.
Onions contain a number of flavonoids, the most studied of which, quercitin, has been shown to halt the growth of tumors in animals and to protect colon cells from the damaging effects of certain cancer-causing substances.
The role of rutin and quercitin in stimulating Ravonol glycosidase activity by cultured cell-free microbial preparations of human feces and saliva.
5 fiber, 14 sugar) Contains vitamin C, folic acid, calcium, phosphorus, iron, zinc, quercitin and omega-3 fatty acids.
To block the histamine released by the body, he uses either a root called butterbur or the antioxidant quercitin.
Supplements that may be useful in achieving these ends include N-acetyl glucosamine, N-acetyl neuraminic acid (sialic acid), D-mannose, L-glutamine, L-glutamic acid HC1, inulin, quercitin, methylsulfonylmethane (MSM), Manapol[R], and digestive enzyme formulations, with, or without, hydrochloric acid.
Quercitin is a strong bioflavinoid that stabilizes the mast cells that release histamines.
Quercitin (a flavonoid of vitamin C)--30-100 mg twice a day.
Walter Crinnion, a naturopath in Kirkland, Washington, recommends quercitin for allergies.
spacing Gallic acid 18 25 Catechin 30 42 Epicatechin 21 29 Polymeric phenols 582 598 Caftaric acid 31 33 Caffeic acid 11 8 Quercitin glycosides 51 65 Quercitin aglycone 19 19 Malvidin glucoside 281 256 Polymeric anthocyanins 62 61 Total anthocyanins 638 592 Monomeric anthocyanins 576 531 (*.
Scientists believe the benefits could be due to the antioxidant quercitin which is found in apples and other hard fruits.
They also plan one for flavonoids, including catechins in tea, naringin and taxifolin in citrus, and quercitin in onions, apples, and red wine.