Polyphenols from some foodstuffs as inhibitors of ovalbumin permeation through Caco-2 cell monolayers

Abstract

Some spices showed high inhibitory activity against ovalbumin permeation through Caco-2 cell monolayers. Pimentol from allspice, rosmarinic acid and luteolin-7-O-β-glucuronide from thyme, quercetin-3-O-β-glucuronide from coriander and rutin from tarragon were identified as the active principles. A structure-activity relationship study among the active isolates and their related compounds indicated that the presence of a catechol structure played an important role in the inhibitory activity of each compound. © 2003 by Japan Society for Bioscience, Biotechnology, and Agrochemistry.