These are rich sources of a flavonoid called quercetin.    From Wordnik.com.  [You: On a Diet] Reference

An Institute of Food Research team focused on one of the compounds, quercetin, which is found in tea, onions, apples and red wine.    From Wordnik.com.  [Onion Is Good For Heart] Reference

Much to our delight there are natural food constituents such as quercetin that are nuraminidase inhibitors.    From Wordnik.com.  [To The Point News Syndicated] Reference

Onions: Rich source of vitamin C, chromium, and quercetin.    From Wordnik.com.  [Dr. Patricia Fitzgerald: Obama Garden Watch: 10 Vegetables Worth A Fist Bump] Reference

Apples are a good source of an antioxidant called quercetin.    From Wordnik.com.  [4 Foods To Boost Your Workout] Reference

The ads claim quercetin is "the only antioxidant clinically proven to boost energy.".    From Wordnik.com.  [Snake Oil in Your Snacks] Reference

Some scientists say quercetin holds promise for fighting fatigue and even infection.    From Wordnik.com.  [Snake Oil in Your Snacks] Reference

About to buy a BP cuff and add quercetin as it encourages loss of fat & also drops BP.    From Wordnik.com.  [Oprah’s plight | The Blog of Michael R. Eades, M.D.] Reference

Citrus pulp, and grapefruit in particular, contains large amounts of quercetin and pectin.    From Wordnik.com.  [Hypertension is a Killer] Reference

One study showed that quercetin -- when taken in supplement form -- helped people bike longer.    From Wordnik.com.  [4 Foods To Boost Your Workout] Reference

The predominant phenolic phytochemicals in apples are quercetin, epicatechin, and procyanidin B2.    From Wordnik.com.  [Archive 2009-06-01] Reference

The liquid concentrate contains quercetin, a chemical derived from the skins of berries and grapes.    From Wordnik.com.  [Snake Oil in Your Snacks] Reference

(The study was funded by Coca-Cola, which apparently was thinking of launching its own quercetin supplement.).    From Wordnik.com.  [Snake Oil in Your Snacks] Reference

Broccoli is packed with anti-cancer antioxidants: vitamin C, beta carotene, lutein, glutathione and quercetin.    From Wordnik.com.  [Archive 2007-08-01] Reference

Take 500 milligrams of quercetin every day for at least six to eight weeks before the expected start of the pollen season.    From Wordnik.com.  [Dr. Andrew Weil: Easing Sneezing, Naturally] Reference

Another recommended herbal remedy is a combination of Vitamin C and quercetin, a substance found in the skin of apples and red onions.    From Wordnik.com.  [Companies Cashing In On Allergies] Reference

The 3-O-acetyl ester of flavonol, quercetin, was mutagenic with.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

£10: Would phytonutrient quercetin help in the treatment of ves.    From Wordnik.com.  [We Blog A Lot] Reference

Which of the following is not a primary dietary source of quercetin?.    From Wordnik.com.  [The Seattle Times] Reference

Onion: Onions contain more quercetin than any other common fruit or vegetable.    From Wordnik.com.  [WBAY Action 2 News] Reference

Question: Would phytonutrient quercetin help in the treatment of vestibulitis?.    From Wordnik.com.  [We Blog A Lot] Reference

Luteolin, quercetin, isoquercetin and rutin possess strong antioxidant properties.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

O-methyl quercetin (tamarixetin), indicating methylation of the B ring catechol group.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

However, DHQ (and quercetin) interaction with super oxide anions is to be considered.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

We observed that the effect of myricetin and quercetin on the enzyme was pH dependent.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

What did a 2007 study of Western States 100 mile run athletes who used quercetin reveal?.    From Wordnik.com.  [The Seattle Times] Reference

Although bioavailability profiles observed following the ingestion of quercetin supplements.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Platelets were treated with quercetin (50 µM), tamarixetin (50 µM), or DMSO (0. 2% (v/v)) for.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Perceived performance enhancement aside, consuming quercetin can help an athlete in what respect?.    From Wordnik.com.  [The Seattle Times] Reference

We have demonstrated that platelets are capable of metabolising quercetin potentially through methylation.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Taken together, these data indicated that quercetin may be methylated at the B ring C-4′ position within platelets.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

It has been reported that quercetin metabolites are retained within plasma for periods of time ranging from 30 min - 11 h.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

The production and export of methylated quercetin metabolites (isorhamnetin and tamarixetin) by neural cells has been reported.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

O-methyl quercetin (tamarixetin) were shown to gain access to the cytosolic compartment of platelets, using confocal microscopy.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Platelets were incubated for 5, 40, 60 and 120 min with quercetin (50 µM) or tamarixetin (50 µM), before lysis and extraction.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

EIC and mass spectrums of standards show tamarixetin (EIC: C. i-RT: 7.5 min; mass spectrum: C. ii-molecular mass: 317 Da), quercetin.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference