quercetin

plural quercetins

1. countableuncountablebiochemistryA flavonol found in many fruits, vegetables, leaves and grains.

   In plasma, quercetin mostly exists as glucuronated, sulfated, and/or methylated quercetin conjugates.

   2014, Masuko Kobori, “14: Dietary Quercetin and other Polyphenols: Attenuation of Obesity”, in Ronald Ross Watson, Victor R. Preedy, Sherma Zibadi, editors, Polyphenols in Human Health and Disease, volume 1, page 168

   3 more examples

   Quercetin has gained the attention of the supplement industry, and is now widely promoted as a natural anti-inflammatory and antioxidant magic bullet.

   2003, David Hoffmann, Medical Herbalism: The Science and Practice of Herbal Medicine, page 104

   The one daily supplement that often reduces allergic symptoms across the board is the phytonutrient quercetin, a chemical compound known as a bioflavonoid and found in plants.

   2005, James Braly, Patrick Holford, Hidden Food Allergies, page 101

   One study, for example, found that eating a diet rich in quercetin, found in green tea, broccoli and red wine, might help protect against lung cancer, especially in heavy smokers.

   2015 August 1, Marta Zaraska, “Bitter truth”, in New Scientist, number 3032, page 27