Myricetin

Myricetin is a flavonoid compound present in fruits and vegetables. It is thought to be a novel natural antineoplastic agent which decreases progression of human pancreatic cancer. Myricetin also improves insulin sensitivity through the enhancement of insulin action (animal studies).

This polyphenolic compound present in the diet, known to be an effective antioxidant but also endowed with several other biological activities such as protein-tyrosine kinase inhibition, inhibits the uptake of glucose by adipocytes (fat cells). In contrast, neither catechins nor gallic acid inhibit glucose uptake. Excessive glucose intake occurs in various clinical conditions associated with obesity, visceral fat accumulation and insulin resistance.

Plants Rich in Myricetin

Tea leaves, green, dry - 104 mg

Tea leaves, black, dry - 42 mg

Blackberry juice concentrate - 21 mg

Carob kibbles - 11 mg

Parsley, raw - 8 mg

Cranberries, raw - 6.8 mg

Currants, European black, raw - 6.6 mg

Sweet potato leaves, raw - 4.8 mg

Cranberry juice, raw - 4.4 mg

Bee Pollen - 4.4 mg

Blueberries, raw - 2.6 mg

References

  1. Myricetin, a naturally occurring flavonol, ameliorates insulin resistance induced by a high-fructose diet in rats. I-Min Liua, Thing-Fong Tzengb, Shorong-Shii Lioua and Ting-Wei Lana. doi:10.1016/j.lfs.2007.08.045
  2. Myricetin, quercetin and catechin-gallate inhibit glucose uptake in isolated rat adipocytes. Strobel P, Allard C, Perez-Acle T, Calderon R, Aldunate R, Leighton F. Biochem J. 2005 Mar 15;386(Pt 3):471-8.