Lymphatic absorption of enterally fed structured triacylglycerol vs physical mix in a canine model.

Jensen GL, McGarvey N, Taraszewski R, Wixson SK, Seidner DL, Pai T, Yeh YY, Lee TW, DeMichele SJ
Am J Clin Nutr. 1994 60 (4): 518-24

PMID: 8092086 · DOI:10.1093/ajcn/60.4.518

The lymphatic absorption of a structured triacylglycerol vs an equivalent physical mixture of the constituent medium-chain triacylglycerol and fish oils was studied. Each of four canines served as its own control in a crossover feeding design with the investigators unaware of diet contents. Lymphatic absorption of n-3 and medium-chain fatty acids peaked within 4-8 h of feeding either diet. The lymph contained more 10:0 fatty acids than 8:0 despite an overall ratio of 10:0 to 8:0 of 0.3 for the diets. The mass of medium-chain fatty acids absorbed in the lymph at measured time points was 2.6 +/- 0.5-fold higher (mean +/- SE of 12 determinations) for the structured triacylglycerol compared with the physical mix. Molecular species analyses revealed that the medium-chain fatty acids in lymph were present as mixed triacylglycerols. The unique molecular structure of these mixed triacylglycerols and the fatty acids at the 2-position may account for the improved absorption.

MeSH Terms (8)

Absorption Animals Dogs Enteral Nutrition Fatty Acids Kinetics Lymphatic System Triglycerides

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