The formation of new glyceride-ester bonds during digestion of glycerides in the lumen of the small intestine of the rat |
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| Authors: | BORGSTROM B |
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| Affiliation: | 1. Dipartimento di Scienze degli Alimenti, The University of Udine, Via Sondrio 2/A, 33100 Udine, Italy;2. Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LeFoRCe), Department of Microbial and Molecular System (M2S), Katholieke Universiteit Leuven, Kasteelpark Arenberg 22, PB 2457, 3001 Leuven, Belgium;3. Dr. Schär R&D Centre, AREA Science Park, Padriciano, 99, 34149 Trieste, Italy;1. Institute for Global Food Security, Queen’s University Belfast, Belfast, Northern Ireland, UK;2. School of Agriculture and Food Science, University College Dublin, Ireland;1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China;2. School of Public Health, Nanchang University, 461 Ba Yi Avenue, Nanchang, Jiangxi 330006, China;3. The State Centre of Quality Supervision and Inspection for Camellia Products, Ganzhou, Jiangxi 341000, China |
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| Abstract: | The previously demonstrated incorporation of free fatty acids into glycerides during digestion of fats in the lumen of the small intestine of rats has been further studied.This incorporation has now been shown to be due partly at least to a real synthesis of new glyceride-ester bonds.Experiments with C14-labeled decanoic acid fed dissolved in olive oil have shown that this acid is absorbed more rapidly than long-chain fatty acids from the small intestine of rats, and that decanoic acid is also utilized for synthesis of glyceride-ester bonds during digestion in vivo.Butyric acid fed dissolved in glyceride is even more rapidly absorbed from the small intestine than is decanoic acid, and any incorporation into glycerides of this acid could not be demonstrated in the lumen of the small intestine of rats.Fed monoglycerides are significantly hydrolyzed in the lumen of the small intestine before absorption.Fatty acids liberated from glycerides in the small intestine of the rat are absorbed more rapidly than the glycerides. |
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