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The Rate of Absorption of Synthetic Triglycerides in the Rat^{1, 2,}

Department of Biochemistry, University of Southern California Medical School, Los Angeles

Triacetin and tributyrin were the most rapidly absorbed fats of any natural or synthetic fats studied; tricaproin and tricaprylin disappeared somewhat more slowly from the alimentary tract of the rat. Trilaurin was only slowly removed from the gastrointestinal tract presumably because of its high melting point which caused its solidification.

The neutral fats composed of odd-chain fatty acids (tripropionin, trivalerin, and triheptylin) were absorbed at a rate of 50% or less of that characteristic of the corresponding even-chain fats. Triisovalerin was absorbed at a rate which compared with the even-chain fats.

² These data were presented before the Institute of Nutrition at the meeting in New Orleans.

Manuscript received 24 April 1940.