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Composition of Intestinal Lumen Lipides Following the Feeding of Triglycerides, Partial Glycerides or Free Fatty Acids¹

Chemical Division, The Procter and Gamble Company, Cincinnati, Ohio

1. The quantity and isomeric form of the monoglycerides found in the lumen of the intestinal tract during digestion are similar, regardless of whether the triglyceride fed consists of fatty acids having a chain length of 18 carbon atoms or one of 10 carbon atoms.

2. The composition of intestinal lipides is only very slightly affected when relatively large amounts of 1- or 2-monoglyceride are fed in admixture with triglyceride.

3. When a mixture of fatty acid and triglyceride is fed, the composition of the intestinal contents, except for relatively smaller amounts of 2-monoglyceride, is unchanged at low levels of fatty acid feeding but exhibits a marked rise in free fatty acid content when higher levels of free fatty acids are administered.

Manuscript received 20 November 1953.