Site of Fatty Acid Absorption.

Abstract

Employing an in vitro everted sac preparation from the hamster intestine, it was demonstrated that fatty acid absorption, resulting in serosal triglycerides, takes place predominantly in the upper jejunum of the small intestine. A concentration gradient between the resulting glycerides of the mucosal and serosal solutions, after the incubation of a C14-palmitic acid-albumin complex on the mucosal side, is approximately 2 fold in favor of the serosal glycerides.