Beyond this,indicators of secondary OS and redox balance of intestinal cells (reactiveoxygen species (ROS), glutathione (GSH), catalase (CAT), superoxidedismutase (SOD), and glutathione peroxidase (GPx)) were monitoredto shed light on the capacity of bioaccessible (poly)phenols to preventsecondary OS and enhance the tissue damage that make up the courseof IBD. This evidence concerns the gene CAT and inflammatory bowel disease.