Intestinal Absorption of Unhydrolyzed Tripalmitin. ∗

Abstract

Summary and Conclusion

A mixture of 20 mg of tripalmitin, C¹⁴ labeled in both the gly-cerol and acid moieties, and 180 mg of tri-unsatured triglycerides, was mixed in 1 g of a fat free ration and fed to a rat with a thoracic duct cannula. Lymph was collected for 9 hours. A second meal was fed and the lymph collected for 6 hours. It was found that in the 2 periods respectively, 3.3 and 3.2% as much of the labeled glycerol appeared in the lymph saturated triglyceride as would have appeared there had all the labeled lymph acid been absorbed unhydrolyzed. It was concluded, therefore, that only 3.3 and 3.2% of the tripalmitin was absorbed unhydrolyzed.