Digestion of butyrate glycerides by pancreatic lipase |
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| Authors: | J Sampugna J G Quinn R E Pitas D L Carpenter R G Jensen |
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| Affiliation: | (1) Department of Animal Industries, University of Connecticut, Storrs, Connecticut;(2) Present address: Worchester Foundation for Experimental Biology, Shrewsbury, Mass;(3) Present address: Department of Dairy Science, University of Maryland, College Park |
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| Abstract: | The racemic triglycerides, glyceryl-1-palmitate-2,3-dibutyrate (PBB), glyceryl-1-butyrate-2,3-dipalmitate (PPB), glyceryl-2-butyrate-1,3-dipalmitate
(PBP), and the diglyceride, racemic glyceryl-1-palmitate-3-butyrate (P-B) were synthesized and digested with pancreatic lipase.
Each triglyceride was mixed with equimolar amounts of triolein (OOO) prior to incubation.
The following order of digestion rates was observed: PBB>PPB>PBP>P-B. There was no evidence for short-chain fatty acid specificity;
however the triglycerides containing butyric acid were hydrolyzed more rapidly than OOO. Based upon the fatty acid composition
of partial glycerides, digestion of butyrate glycerides was not a simple phenomenon. For example, in the digestion of PBB,
butyric acid accumulated faster than palmitic acid in the diglycerides, and monobutyrin was found to accumulate when the diglyceride,
P-B, was digested. As evidenced by the fatty acid composition of the monoglycerides, positional specificity of pancreatic
lipase was always maintained.
Scientific contribution No. 245, Agricultural Experiment Station, University of Connecticut, Storrs.
Presented in part at the AOCS Meeting, Philadelphia, October 1967. |
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