- Stein K, Borowicki A, Scharlau D, Schettler A, Scheu K, Obst U, et al. Effects of synbiotic fermentation products on primary chemoprevention in human colon cells. J Nutr Biochem. 2012;23:777-84 pubmed publisher..The observed effects could improve detoxification of xenobiotics and therefore may lower colon cancer risk. ..