... products, Skyherb keeps purchasing about 1000ton wild unripe apples from North China every year. The abundant storage ... Apple Polyphenols are phytochemicals concentrated in the skin of unripe apples. Quercetin, procyanidins, catechins, phloridzin, phlorizin, epicatechin, rutin, ... effects in major diseases.6.Function: Polyphenols extracted from apples are also showing promise in treating , improving , ...