Colonic availability of polyphenols and D-(-)-quinic acid after apple smoothie consumption.

Scope: The aim of this study was to determine the amounts of polyphenols and D-(-)-quinic acid reaching the ileostomy bags of probands (and thus the colon in healthy humans) after ingestion of apple smoothie, a beverage containing 60% cloudy apple juice and 40% apple puree.

Methods And Results: Ten healthy ileostomy subjects each ingested 0.7 L of apple smoothie (a bottle).