Apple polyphenol extracts are a group of naturally occurring plant nutrients in apples, and they hold numerous health benefits. The polyphenol content differs according to maturity rate. Young apple has 10 times content comparing with mature apple. So, Apple polyphenol extracts is better to use young apple to get the apple polyphenols. Crude apple extracts contain chlorogenic acid, catechins, apple condensed tannins, phloridzin, phloretin, anthocyanin etc.