Apples Amazing Polyphenols

In terms of flavonols, quercetin is the primary phytonutrient found in apples, and its far more concentrated in the skin than in the pulp. Kaempferol and myricetin are also important apple flavonols. Chlorogenic acid is apples primary phenolic acid, and its found throughout the pulp and also in the skin. If apples are red, its because of their anthocyanins, which are largely restricted to the skin.